Mercurial > hg > truffle
annotate src/share/vm/opto/library_call.cpp @ 17771:9fdaa79b0c27
8036703: Add trace event with statistics for the metaspace chunk free lists
Reviewed-by: stefank, mgerdin, coleenp, egahlin
author | ehelin |
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date | Fri, 21 Mar 2014 10:31:51 +0100 |
parents | 085b304a1cc5 |
children | 9ab9f254cfe2 |
rev | line source |
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0 | 1 /* |
10405 | 2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "classfile/systemDictionary.hpp" | |
27 #include "classfile/vmSymbols.hpp" | |
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28 #include "compiler/compileBroker.hpp" |
1972 | 29 #include "compiler/compileLog.hpp" |
30 #include "oops/objArrayKlass.hpp" | |
31 #include "opto/addnode.hpp" | |
32 #include "opto/callGenerator.hpp" | |
33 #include "opto/cfgnode.hpp" | |
34 #include "opto/idealKit.hpp" | |
12323 | 35 #include "opto/mathexactnode.hpp" |
1972 | 36 #include "opto/mulnode.hpp" |
37 #include "opto/parse.hpp" | |
38 #include "opto/runtime.hpp" | |
39 #include "opto/subnode.hpp" | |
40 #include "prims/nativeLookup.hpp" | |
41 #include "runtime/sharedRuntime.hpp" | |
10405 | 42 #include "trace/traceMacros.hpp" |
0 | 43 |
44 class LibraryIntrinsic : public InlineCallGenerator { | |
45 // Extend the set of intrinsics known to the runtime: | |
46 public: | |
47 private: | |
48 bool _is_virtual; | |
6894 | 49 bool _is_predicted; |
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50 bool _does_virtual_dispatch; |
0 | 51 vmIntrinsics::ID _intrinsic_id; |
52 | |
53 public: | |
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54 LibraryIntrinsic(ciMethod* m, bool is_virtual, bool is_predicted, bool does_virtual_dispatch, vmIntrinsics::ID id) |
0 | 55 : InlineCallGenerator(m), |
56 _is_virtual(is_virtual), | |
6894 | 57 _is_predicted(is_predicted), |
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58 _does_virtual_dispatch(does_virtual_dispatch), |
0 | 59 _intrinsic_id(id) |
60 { | |
61 } | |
62 virtual bool is_intrinsic() const { return true; } | |
63 virtual bool is_virtual() const { return _is_virtual; } | |
6894 | 64 virtual bool is_predicted() const { return _is_predicted; } |
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65 virtual bool does_virtual_dispatch() const { return _does_virtual_dispatch; } |
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66 virtual JVMState* generate(JVMState* jvms, Parse* parent_parser); |
6894 | 67 virtual Node* generate_predicate(JVMState* jvms); |
0 | 68 vmIntrinsics::ID intrinsic_id() const { return _intrinsic_id; } |
69 }; | |
70 | |
71 | |
72 // Local helper class for LibraryIntrinsic: | |
73 class LibraryCallKit : public GraphKit { | |
74 private: | |
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75 LibraryIntrinsic* _intrinsic; // the library intrinsic being called |
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76 Node* _result; // the result node, if any |
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77 int _reexecute_sp; // the stack pointer when bytecode needs to be reexecuted |
0 | 78 |
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79 const TypeOopPtr* sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type, bool is_native_ptr = false); |
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80 |
0 | 81 public: |
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82 LibraryCallKit(JVMState* jvms, LibraryIntrinsic* intrinsic) |
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83 : GraphKit(jvms), |
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84 _intrinsic(intrinsic), |
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85 _result(NULL) |
0 | 86 { |
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87 // Check if this is a root compile. In that case we don't have a caller. |
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88 if (!jvms->has_method()) { |
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89 _reexecute_sp = sp(); |
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90 } else { |
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91 // Find out how many arguments the interpreter needs when deoptimizing |
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92 // and save the stack pointer value so it can used by uncommon_trap. |
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93 // We find the argument count by looking at the declared signature. |
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94 bool ignored_will_link; |
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95 ciSignature* declared_signature = NULL; |
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96 ciMethod* ignored_callee = caller()->get_method_at_bci(bci(), ignored_will_link, &declared_signature); |
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97 const int nargs = declared_signature->arg_size_for_bc(caller()->java_code_at_bci(bci())); |
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98 _reexecute_sp = sp() + nargs; // "push" arguments back on stack |
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99 } |
0 | 100 } |
101 | |
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102 virtual LibraryCallKit* is_LibraryCallKit() const { return (LibraryCallKit*)this; } |
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103 |
0 | 104 ciMethod* caller() const { return jvms()->method(); } |
105 int bci() const { return jvms()->bci(); } | |
106 LibraryIntrinsic* intrinsic() const { return _intrinsic; } | |
107 vmIntrinsics::ID intrinsic_id() const { return _intrinsic->intrinsic_id(); } | |
108 ciMethod* callee() const { return _intrinsic->method(); } | |
109 | |
110 bool try_to_inline(); | |
6894 | 111 Node* try_to_predicate(); |
0 | 112 |
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113 void push_result() { |
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114 // Push the result onto the stack. |
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115 if (!stopped() && result() != NULL) { |
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116 BasicType bt = result()->bottom_type()->basic_type(); |
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117 push_node(bt, result()); |
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118 } |
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119 } |
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120 |
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121 private: |
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122 void fatal_unexpected_iid(vmIntrinsics::ID iid) { |
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123 fatal(err_msg_res("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid))); |
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124 } |
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125 |
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126 void set_result(Node* n) { assert(_result == NULL, "only set once"); _result = n; } |
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127 void set_result(RegionNode* region, PhiNode* value); |
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128 Node* result() { return _result; } |
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129 |
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130 virtual int reexecute_sp() { return _reexecute_sp; } |
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131 |
0 | 132 // Helper functions to inline natives |
133 Node* generate_guard(Node* test, RegionNode* region, float true_prob); | |
134 Node* generate_slow_guard(Node* test, RegionNode* region); | |
135 Node* generate_fair_guard(Node* test, RegionNode* region); | |
136 Node* generate_negative_guard(Node* index, RegionNode* region, | |
137 // resulting CastII of index: | |
138 Node* *pos_index = NULL); | |
139 Node* generate_nonpositive_guard(Node* index, bool never_negative, | |
140 // resulting CastII of index: | |
141 Node* *pos_index = NULL); | |
142 Node* generate_limit_guard(Node* offset, Node* subseq_length, | |
143 Node* array_length, | |
144 RegionNode* region); | |
145 Node* generate_current_thread(Node* &tls_output); | |
146 address basictype2arraycopy(BasicType t, Node *src_offset, Node *dest_offset, | |
2324 | 147 bool disjoint_bases, const char* &name, bool dest_uninitialized); |
0 | 148 Node* load_mirror_from_klass(Node* klass); |
149 Node* load_klass_from_mirror_common(Node* mirror, bool never_see_null, | |
150 RegionNode* region, int null_path, | |
151 int offset); | |
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152 Node* load_klass_from_mirror(Node* mirror, bool never_see_null, |
0 | 153 RegionNode* region, int null_path) { |
154 int offset = java_lang_Class::klass_offset_in_bytes(); | |
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155 return load_klass_from_mirror_common(mirror, never_see_null, |
0 | 156 region, null_path, |
157 offset); | |
158 } | |
159 Node* load_array_klass_from_mirror(Node* mirror, bool never_see_null, | |
160 RegionNode* region, int null_path) { | |
161 int offset = java_lang_Class::array_klass_offset_in_bytes(); | |
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162 return load_klass_from_mirror_common(mirror, never_see_null, |
0 | 163 region, null_path, |
164 offset); | |
165 } | |
166 Node* generate_access_flags_guard(Node* kls, | |
167 int modifier_mask, int modifier_bits, | |
168 RegionNode* region); | |
169 Node* generate_interface_guard(Node* kls, RegionNode* region); | |
170 Node* generate_array_guard(Node* kls, RegionNode* region) { | |
171 return generate_array_guard_common(kls, region, false, false); | |
172 } | |
173 Node* generate_non_array_guard(Node* kls, RegionNode* region) { | |
174 return generate_array_guard_common(kls, region, false, true); | |
175 } | |
176 Node* generate_objArray_guard(Node* kls, RegionNode* region) { | |
177 return generate_array_guard_common(kls, region, true, false); | |
178 } | |
179 Node* generate_non_objArray_guard(Node* kls, RegionNode* region) { | |
180 return generate_array_guard_common(kls, region, true, true); | |
181 } | |
182 Node* generate_array_guard_common(Node* kls, RegionNode* region, | |
183 bool obj_array, bool not_array); | |
184 Node* generate_virtual_guard(Node* obj_klass, RegionNode* slow_region); | |
185 CallJavaNode* generate_method_call(vmIntrinsics::ID method_id, | |
186 bool is_virtual = false, bool is_static = false); | |
187 CallJavaNode* generate_method_call_static(vmIntrinsics::ID method_id) { | |
188 return generate_method_call(method_id, false, true); | |
189 } | |
190 CallJavaNode* generate_method_call_virtual(vmIntrinsics::ID method_id) { | |
191 return generate_method_call(method_id, true, false); | |
192 } | |
6894 | 193 Node * load_field_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, bool is_exact, bool is_static); |
0 | 194 |
6057 | 195 Node* make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2); |
196 Node* make_string_method_node(int opcode, Node* str1, Node* str2); | |
0 | 197 bool inline_string_compareTo(); |
198 bool inline_string_indexOf(); | |
199 Node* string_indexOf(Node* string_object, ciTypeArray* target_array, jint offset, jint cache_i, jint md2_i); | |
681 | 200 bool inline_string_equals(); |
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201 Node* round_double_node(Node* n); |
0 | 202 bool runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName); |
203 bool inline_math_native(vmIntrinsics::ID id); | |
204 bool inline_trig(vmIntrinsics::ID id); | |
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205 bool inline_math(vmIntrinsics::ID id); |
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206 template <typename OverflowOp> |
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207 bool inline_math_overflow(Node* arg1, Node* arg2); |
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208 void inline_math_mathExact(Node* math, Node* test); |
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209 bool inline_math_addExactI(bool is_increment); |
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210 bool inline_math_addExactL(bool is_increment); |
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211 bool inline_math_multiplyExactI(); |
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212 bool inline_math_multiplyExactL(); |
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213 bool inline_math_negateExactI(); |
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214 bool inline_math_negateExactL(); |
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215 bool inline_math_subtractExactI(bool is_decrement); |
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216 bool inline_math_subtractExactL(bool is_decrement); |
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217 bool inline_exp(); |
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218 bool inline_pow(); |
6205 | 219 void finish_pow_exp(Node* result, Node* x, Node* y, const TypeFunc* call_type, address funcAddr, const char* funcName); |
0 | 220 bool inline_min_max(vmIntrinsics::ID id); |
221 Node* generate_min_max(vmIntrinsics::ID id, Node* x, Node* y); | |
222 // This returns Type::AnyPtr, RawPtr, or OopPtr. | |
223 int classify_unsafe_addr(Node* &base, Node* &offset); | |
224 Node* make_unsafe_address(Node* base, Node* offset); | |
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225 // Helper for inline_unsafe_access. |
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226 // Generates the guards that check whether the result of |
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227 // Unsafe.getObject should be recorded in an SATB log buffer. |
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228 void insert_pre_barrier(Node* base_oop, Node* offset, Node* pre_val, bool need_mem_bar); |
0 | 229 bool inline_unsafe_access(bool is_native_ptr, bool is_store, BasicType type, bool is_volatile); |
230 bool inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static); | |
12078 | 231 static bool klass_needs_init_guard(Node* kls); |
0 | 232 bool inline_unsafe_allocate(); |
233 bool inline_unsafe_copyMemory(); | |
234 bool inline_native_currentThread(); | |
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235 #ifdef TRACE_HAVE_INTRINSICS |
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236 bool inline_native_classID(); |
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237 bool inline_native_threadID(); |
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238 #endif |
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239 bool inline_native_time_funcs(address method, const char* funcName); |
0 | 240 bool inline_native_isInterrupted(); |
241 bool inline_native_Class_query(vmIntrinsics::ID id); | |
242 bool inline_native_subtype_check(); | |
243 | |
244 bool inline_native_newArray(); | |
245 bool inline_native_getLength(); | |
246 bool inline_array_copyOf(bool is_copyOfRange); | |
169
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247 bool inline_array_equals(); |
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248 void copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array, bool card_mark); |
0 | 249 bool inline_native_clone(bool is_virtual); |
250 bool inline_native_Reflection_getCallerClass(); | |
251 // Helper function for inlining native object hash method | |
252 bool inline_native_hashcode(bool is_virtual, bool is_static); | |
253 bool inline_native_getClass(); | |
254 | |
255 // Helper functions for inlining arraycopy | |
256 bool inline_arraycopy(); | |
257 void generate_arraycopy(const TypePtr* adr_type, | |
258 BasicType basic_elem_type, | |
259 Node* src, Node* src_offset, | |
260 Node* dest, Node* dest_offset, | |
261 Node* copy_length, | |
262 bool disjoint_bases = false, | |
263 bool length_never_negative = false, | |
264 RegionNode* slow_region = NULL); | |
265 AllocateArrayNode* tightly_coupled_allocation(Node* ptr, | |
266 RegionNode* slow_region); | |
267 void generate_clear_array(const TypePtr* adr_type, | |
268 Node* dest, | |
269 BasicType basic_elem_type, | |
270 Node* slice_off, | |
271 Node* slice_len, | |
272 Node* slice_end); | |
273 bool generate_block_arraycopy(const TypePtr* adr_type, | |
274 BasicType basic_elem_type, | |
275 AllocateNode* alloc, | |
276 Node* src, Node* src_offset, | |
277 Node* dest, Node* dest_offset, | |
2324 | 278 Node* dest_size, bool dest_uninitialized); |
0 | 279 void generate_slow_arraycopy(const TypePtr* adr_type, |
280 Node* src, Node* src_offset, | |
281 Node* dest, Node* dest_offset, | |
2324 | 282 Node* copy_length, bool dest_uninitialized); |
0 | 283 Node* generate_checkcast_arraycopy(const TypePtr* adr_type, |
284 Node* dest_elem_klass, | |
285 Node* src, Node* src_offset, | |
286 Node* dest, Node* dest_offset, | |
2324 | 287 Node* copy_length, bool dest_uninitialized); |
0 | 288 Node* generate_generic_arraycopy(const TypePtr* adr_type, |
289 Node* src, Node* src_offset, | |
290 Node* dest, Node* dest_offset, | |
2324 | 291 Node* copy_length, bool dest_uninitialized); |
0 | 292 void generate_unchecked_arraycopy(const TypePtr* adr_type, |
293 BasicType basic_elem_type, | |
294 bool disjoint_bases, | |
295 Node* src, Node* src_offset, | |
296 Node* dest, Node* dest_offset, | |
2324 | 297 Node* copy_length, bool dest_uninitialized); |
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298 typedef enum { LS_xadd, LS_xchg, LS_cmpxchg } LoadStoreKind; |
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299 bool inline_unsafe_load_store(BasicType type, LoadStoreKind kind); |
0 | 300 bool inline_unsafe_ordered_store(BasicType type); |
7425 | 301 bool inline_unsafe_fence(vmIntrinsics::ID id); |
0 | 302 bool inline_fp_conversions(vmIntrinsics::ID id); |
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303 bool inline_number_methods(vmIntrinsics::ID id); |
3249
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304 bool inline_reference_get(); |
6894 | 305 bool inline_aescrypt_Block(vmIntrinsics::ID id); |
306 bool inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id); | |
307 Node* inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting); | |
308 Node* get_key_start_from_aescrypt_object(Node* aescrypt_object); | |
17670 | 309 Node* get_original_key_start_from_aescrypt_object(Node* aescrypt_object); |
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310 bool inline_encodeISOArray(); |
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311 bool inline_updateCRC32(); |
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312 bool inline_updateBytesCRC32(); |
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313 bool inline_updateByteBufferCRC32(); |
0 | 314 }; |
315 | |
316 | |
317 //---------------------------make_vm_intrinsic---------------------------- | |
318 CallGenerator* Compile::make_vm_intrinsic(ciMethod* m, bool is_virtual) { | |
319 vmIntrinsics::ID id = m->intrinsic_id(); | |
320 assert(id != vmIntrinsics::_none, "must be a VM intrinsic"); | |
321 | |
322 if (DisableIntrinsic[0] != '\0' | |
323 && strstr(DisableIntrinsic, vmIntrinsics::name_at(id)) != NULL) { | |
324 // disabled by a user request on the command line: | |
325 // example: -XX:DisableIntrinsic=_hashCode,_getClass | |
326 return NULL; | |
327 } | |
328 | |
329 if (!m->is_loaded()) { | |
330 // do not attempt to inline unloaded methods | |
331 return NULL; | |
332 } | |
333 | |
334 // Only a few intrinsics implement a virtual dispatch. | |
335 // They are expensive calls which are also frequently overridden. | |
336 if (is_virtual) { | |
337 switch (id) { | |
338 case vmIntrinsics::_hashCode: | |
339 case vmIntrinsics::_clone: | |
340 // OK, Object.hashCode and Object.clone intrinsics come in both flavors | |
341 break; | |
342 default: | |
343 return NULL; | |
344 } | |
345 } | |
346 | |
347 // -XX:-InlineNatives disables nearly all intrinsics: | |
348 if (!InlineNatives) { | |
349 switch (id) { | |
350 case vmIntrinsics::_indexOf: | |
351 case vmIntrinsics::_compareTo: | |
681 | 352 case vmIntrinsics::_equals: |
169
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353 case vmIntrinsics::_equalsC: |
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354 case vmIntrinsics::_getAndAddInt: |
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355 case vmIntrinsics::_getAndAddLong: |
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356 case vmIntrinsics::_getAndSetInt: |
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357 case vmIntrinsics::_getAndSetLong: |
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358 case vmIntrinsics::_getAndSetObject: |
7425 | 359 case vmIntrinsics::_loadFence: |
360 case vmIntrinsics::_storeFence: | |
361 case vmIntrinsics::_fullFence: | |
0 | 362 break; // InlineNatives does not control String.compareTo |
6615
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7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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363 case vmIntrinsics::_Reference_get: |
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364 break; // InlineNatives does not control Reference.get |
0 | 365 default: |
366 return NULL; | |
367 } | |
368 } | |
369 | |
6894 | 370 bool is_predicted = false; |
12330
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8014447: Object.hashCode intrinsic breaks inline caches
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371 bool does_virtual_dispatch = false; |
6894 | 372 |
0 | 373 switch (id) { |
374 case vmIntrinsics::_compareTo: | |
375 if (!SpecialStringCompareTo) return NULL; | |
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376 if (!Matcher::match_rule_supported(Op_StrComp)) return NULL; |
0 | 377 break; |
378 case vmIntrinsics::_indexOf: | |
379 if (!SpecialStringIndexOf) return NULL; | |
380 break; | |
681 | 381 case vmIntrinsics::_equals: |
382 if (!SpecialStringEquals) return NULL; | |
7194
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383 if (!Matcher::match_rule_supported(Op_StrEquals)) return NULL; |
681 | 384 break; |
169
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6695049: (coll) Create an x86 intrinsic for Arrays.equals
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385 case vmIntrinsics::_equalsC: |
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386 if (!SpecialArraysEquals) return NULL; |
7194
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387 if (!Matcher::match_rule_supported(Op_AryEq)) return NULL; |
169
9148c65abefc
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388 break; |
0 | 389 case vmIntrinsics::_arraycopy: |
390 if (!InlineArrayCopy) return NULL; | |
391 break; | |
392 case vmIntrinsics::_copyMemory: | |
393 if (StubRoutines::unsafe_arraycopy() == NULL) return NULL; | |
394 if (!InlineArrayCopy) return NULL; | |
395 break; | |
396 case vmIntrinsics::_hashCode: | |
397 if (!InlineObjectHash) return NULL; | |
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29bdcf12457c
8014447: Object.hashCode intrinsic breaks inline caches
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398 does_virtual_dispatch = true; |
0 | 399 break; |
400 case vmIntrinsics::_clone: | |
12330
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8014447: Object.hashCode intrinsic breaks inline caches
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401 does_virtual_dispatch = true; |
0 | 402 case vmIntrinsics::_copyOf: |
403 case vmIntrinsics::_copyOfRange: | |
404 if (!InlineObjectCopy) return NULL; | |
405 // These also use the arraycopy intrinsic mechanism: | |
406 if (!InlineArrayCopy) return NULL; | |
407 break; | |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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408 case vmIntrinsics::_encodeISOArray: |
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6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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409 if (!SpecialEncodeISOArray) return NULL; |
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6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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410 if (!Matcher::match_rule_supported(Op_EncodeISOArray)) return NULL; |
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6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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411 break; |
0 | 412 case vmIntrinsics::_checkIndex: |
413 // We do not intrinsify this. The optimizer does fine with it. | |
414 return NULL; | |
415 | |
416 case vmIntrinsics::_getCallerClass: | |
417 if (!UseNewReflection) return NULL; | |
418 if (!InlineReflectionGetCallerClass) return NULL; | |
8866
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7198429: need checked categorization of caller-sensitive methods in the JDK
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419 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) return NULL; |
0 | 420 break; |
421 | |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
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|
422 case vmIntrinsics::_bitCount_i: |
5934
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7152957: VM crashes with assert(false) failed: bad AD file
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423 if (!Matcher::match_rule_supported(Op_PopCountI)) return NULL; |
5927
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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|
424 break; |
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6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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changeset
|
425 |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
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426 case vmIntrinsics::_bitCount_l: |
5934
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7152957: VM crashes with assert(false) failed: bad AD file
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|
427 if (!Matcher::match_rule_supported(Op_PopCountL)) return NULL; |
5927
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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|
428 break; |
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6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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diff
changeset
|
429 |
b40ac3579043
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changeset
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430 case vmIntrinsics::_numberOfLeadingZeros_i: |
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|
431 if (!Matcher::match_rule_supported(Op_CountLeadingZerosI)) return NULL; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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432 break; |
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diff
changeset
|
433 |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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changeset
|
434 case vmIntrinsics::_numberOfLeadingZeros_l: |
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changeset
|
435 if (!Matcher::match_rule_supported(Op_CountLeadingZerosL)) return NULL; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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4902
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changeset
|
436 break; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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diff
changeset
|
437 |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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changeset
|
438 case vmIntrinsics::_numberOfTrailingZeros_i: |
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6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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changeset
|
439 if (!Matcher::match_rule_supported(Op_CountTrailingZerosI)) return NULL; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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4902
diff
changeset
|
440 break; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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diff
changeset
|
441 |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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changeset
|
442 case vmIntrinsics::_numberOfTrailingZeros_l: |
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6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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changeset
|
443 if (!Matcher::match_rule_supported(Op_CountTrailingZerosL)) return NULL; |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
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|
444 break; |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
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changeset
|
445 |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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446 case vmIntrinsics::_reverseBytes_c: |
7421
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8005031: Some cleanup in c2 to prepare for incremental inlining support
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447 if (!Matcher::match_rule_supported(Op_ReverseBytesUS)) return NULL; |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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448 break; |
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449 case vmIntrinsics::_reverseBytes_s: |
7421
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8005031: Some cleanup in c2 to prepare for incremental inlining support
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450 if (!Matcher::match_rule_supported(Op_ReverseBytesS)) return NULL; |
7194
beebba0acc11
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|
451 break; |
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452 case vmIntrinsics::_reverseBytes_i: |
7421
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8005031: Some cleanup in c2 to prepare for incremental inlining support
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453 if (!Matcher::match_rule_supported(Op_ReverseBytesI)) return NULL; |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
454 break; |
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455 case vmIntrinsics::_reverseBytes_l: |
7421
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456 if (!Matcher::match_rule_supported(Op_ReverseBytesL)) return NULL; |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
457 break; |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
458 |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
459 case vmIntrinsics::_Reference_get: |
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7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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|
460 // Use the intrinsic version of Reference.get() so that the value in |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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461 // the referent field can be registered by the G1 pre-barrier code. |
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7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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462 // Also add memory barrier to prevent commoning reads from this field |
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7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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changeset
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463 // across safepoint since GC can change it value. |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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2385
diff
changeset
|
464 break; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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diff
changeset
|
465 |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
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466 case vmIntrinsics::_compareAndSwapObject: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
|
467 #ifdef _LP64 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
|
468 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapP)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
469 #endif |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
changeset
|
470 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
changeset
|
471 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
472 case vmIntrinsics::_compareAndSwapLong: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
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473 if (!Matcher::match_rule_supported(Op_CompareAndSwapL)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
474 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
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diff
changeset
|
475 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
476 case vmIntrinsics::_getAndAddInt: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
|
477 if (!Matcher::match_rule_supported(Op_GetAndAddI)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
478 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
479 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
changeset
|
480 case vmIntrinsics::_getAndAddLong: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
481 if (!Matcher::match_rule_supported(Op_GetAndAddL)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
482 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
483 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
484 case vmIntrinsics::_getAndSetInt: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
485 if (!Matcher::match_rule_supported(Op_GetAndSetI)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
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diff
changeset
|
486 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
487 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
488 case vmIntrinsics::_getAndSetLong: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
|
489 if (!Matcher::match_rule_supported(Op_GetAndSetL)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
490 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
491 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
492 case vmIntrinsics::_getAndSetObject: |
7eca5de9e0b6
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changeset
|
493 #ifdef _LP64 |
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|
494 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetP)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
495 if (UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetN)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
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diff
changeset
|
496 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
497 #else |
7eca5de9e0b6
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|
498 if (!Matcher::match_rule_supported(Op_GetAndSetP)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
499 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
500 #endif |
7eca5de9e0b6
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|
501 |
6894 | 502 case vmIntrinsics::_aescrypt_encryptBlock: |
503 case vmIntrinsics::_aescrypt_decryptBlock: | |
504 if (!UseAESIntrinsics) return NULL; | |
505 break; | |
506 | |
507 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
508 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
509 if (!UseAESIntrinsics) return NULL; | |
510 // these two require the predicated logic | |
511 is_predicted = true; | |
512 break; | |
513 | |
11080
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
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diff
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|
514 case vmIntrinsics::_updateCRC32: |
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7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
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diff
changeset
|
515 case vmIntrinsics::_updateBytesCRC32: |
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drchase
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diff
changeset
|
516 case vmIntrinsics::_updateByteBufferCRC32: |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
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diff
changeset
|
517 if (!UseCRC32Intrinsics) return NULL; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
518 break; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
519 |
12972
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
520 case vmIntrinsics::_incrementExactI: |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
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diff
changeset
|
521 case vmIntrinsics::_addExactI: |
17726
085b304a1cc5
8027754: Enable loop optimizations for loops with MathExact inside
rbackman
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diff
changeset
|
522 if (!Matcher::match_rule_supported(Op_OverflowAddI) || !UseMathExactIntrinsics) return NULL; |
12972
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
523 break; |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
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diff
changeset
|
524 case vmIntrinsics::_incrementExactL: |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
525 case vmIntrinsics::_addExactL: |
17726
085b304a1cc5
8027754: Enable loop optimizations for loops with MathExact inside
rbackman
parents:
17716
diff
changeset
|
526 if (!Matcher::match_rule_supported(Op_OverflowAddL) || !UseMathExactIntrinsics) return NULL; |
12972
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
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diff
changeset
|
527 break; |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
528 case vmIntrinsics::_decrementExactI: |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
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diff
changeset
|
529 case vmIntrinsics::_subtractExactI: |
17726
085b304a1cc5
8027754: Enable loop optimizations for loops with MathExact inside
rbackman
parents:
17716
diff
changeset
|
530 if (!Matcher::match_rule_supported(Op_OverflowSubI) || !UseMathExactIntrinsics) return NULL; |
12972
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
531 break; |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
532 case vmIntrinsics::_decrementExactL: |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
533 case vmIntrinsics::_subtractExactL: |
17726
085b304a1cc5
8027754: Enable loop optimizations for loops with MathExact inside
rbackman
parents:
17716
diff
changeset
|
534 if (!Matcher::match_rule_supported(Op_OverflowSubL) || !UseMathExactIntrinsics) return NULL; |
12972
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
535 break; |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
536 case vmIntrinsics::_negateExactI: |
17726
085b304a1cc5
8027754: Enable loop optimizations for loops with MathExact inside
rbackman
parents:
17716
diff
changeset
|
537 if (!Matcher::match_rule_supported(Op_OverflowSubI) || !UseMathExactIntrinsics) return NULL; |
12972
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
538 break; |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
539 case vmIntrinsics::_negateExactL: |
17726
085b304a1cc5
8027754: Enable loop optimizations for loops with MathExact inside
rbackman
parents:
17716
diff
changeset
|
540 if (!Matcher::match_rule_supported(Op_OverflowSubL) || !UseMathExactIntrinsics) return NULL; |
12972
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
541 break; |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
542 case vmIntrinsics::_multiplyExactI: |
17726
085b304a1cc5
8027754: Enable loop optimizations for loops with MathExact inside
rbackman
parents:
17716
diff
changeset
|
543 if (!Matcher::match_rule_supported(Op_OverflowMulI) || !UseMathExactIntrinsics) return NULL; |
12972
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
544 break; |
59e8ad757e19
8026844: Various Math functions needs intrinsification
rbackman
parents:
12966
diff
changeset
|
545 case vmIntrinsics::_multiplyExactL: |
17726
085b304a1cc5
8027754: Enable loop optimizations for loops with MathExact inside
rbackman
parents:
17716
diff
changeset
|
546 if (!Matcher::match_rule_supported(Op_OverflowMulL) || !UseMathExactIntrinsics) return NULL; |
12323 | 547 break; |
548 | |
0 | 549 default: |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
851
diff
changeset
|
550 assert(id <= vmIntrinsics::LAST_COMPILER_INLINE, "caller responsibility"); |
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
851
diff
changeset
|
551 assert(id != vmIntrinsics::_Object_init && id != vmIntrinsics::_invoke, "enum out of order?"); |
0 | 552 break; |
553 } | |
554 | |
555 // -XX:-InlineClassNatives disables natives from the Class class. | |
556 // The flag applies to all reflective calls, notably Array.newArray | |
557 // (visible to Java programmers as Array.newInstance). | |
558 if (m->holder()->name() == ciSymbol::java_lang_Class() || | |
559 m->holder()->name() == ciSymbol::java_lang_reflect_Array()) { | |
560 if (!InlineClassNatives) return NULL; | |
561 } | |
562 | |
563 // -XX:-InlineThreadNatives disables natives from the Thread class. | |
564 if (m->holder()->name() == ciSymbol::java_lang_Thread()) { | |
565 if (!InlineThreadNatives) return NULL; | |
566 } | |
567 | |
568 // -XX:-InlineMathNatives disables natives from the Math,Float and Double classes. | |
569 if (m->holder()->name() == ciSymbol::java_lang_Math() || | |
570 m->holder()->name() == ciSymbol::java_lang_Float() || | |
571 m->holder()->name() == ciSymbol::java_lang_Double()) { | |
572 if (!InlineMathNatives) return NULL; | |
573 } | |
574 | |
575 // -XX:-InlineUnsafeOps disables natives from the Unsafe class. | |
576 if (m->holder()->name() == ciSymbol::sun_misc_Unsafe()) { | |
577 if (!InlineUnsafeOps) return NULL; | |
578 } | |
579 | |
12330
29bdcf12457c
8014447: Object.hashCode intrinsic breaks inline caches
shade
parents:
12323
diff
changeset
|
580 return new LibraryIntrinsic(m, is_virtual, is_predicted, does_virtual_dispatch, (vmIntrinsics::ID) id); |
0 | 581 } |
582 | |
583 //----------------------register_library_intrinsics----------------------- | |
584 // Initialize this file's data structures, for each Compile instance. | |
585 void Compile::register_library_intrinsics() { | |
586 // Nothing to do here. | |
587 } | |
588 | |
12956
3213ba4d3dff
8024069: replace_in_map() should operate on parent maps
roland
parents:
12330
diff
changeset
|
589 JVMState* LibraryIntrinsic::generate(JVMState* jvms, Parse* parent_parser) { |
0 | 590 LibraryCallKit kit(jvms, this); |
591 Compile* C = kit.C; | |
592 int nodes = C->unique(); | |
593 #ifndef PRODUCT | |
12295 | 594 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { |
0 | 595 char buf[1000]; |
596 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); | |
597 tty->print_cr("Intrinsic %s", str); | |
598 } | |
599 #endif | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
600 ciMethod* callee = kit.callee(); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
601 const int bci = kit.bci(); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
602 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
603 // Try to inline the intrinsic. |
0 | 604 if (kit.try_to_inline()) { |
12295 | 605 if (C->print_intrinsics() || C->print_inlining()) { |
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7200
diff
changeset
|
606 C->print_inlining(callee, jvms->depth() - 1, bci, is_virtual() ? "(intrinsic, virtual)" : "(intrinsic)"); |
0 | 607 } |
608 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked); | |
609 if (C->log()) { | |
610 C->log()->elem("intrinsic id='%s'%s nodes='%d'", | |
611 vmIntrinsics::name_at(intrinsic_id()), | |
612 (is_virtual() ? " virtual='1'" : ""), | |
613 C->unique() - nodes); | |
614 } | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
615 // Push the result from the inlined method onto the stack. |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
616 kit.push_result(); |
0 | 617 return kit.transfer_exceptions_into_jvms(); |
618 } | |
619 | |
5927
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
620 // The intrinsic bailed out |
12295 | 621 if (C->print_intrinsics() || C->print_inlining()) { |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
622 if (jvms->has_method()) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
623 // Not a root compile. |
5927
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
624 const char* msg = is_virtual() ? "failed to inline (intrinsic, virtual)" : "failed to inline (intrinsic)"; |
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7200
diff
changeset
|
625 C->print_inlining(callee, jvms->depth() - 1, bci, msg); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
626 } else { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
627 // Root compile |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
628 tty->print("Did not generate intrinsic %s%s at bci:%d in", |
856
75596850f863
6862576: vmIntrinsics needs cleanup in order to support JSR 292 intrinsics
jrose
parents:
851
diff
changeset
|
629 vmIntrinsics::name_at(intrinsic_id()), |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
630 (is_virtual() ? " (virtual)" : ""), bci); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
631 } |
0 | 632 } |
633 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); | |
634 return NULL; | |
635 } | |
636 | |
6894 | 637 Node* LibraryIntrinsic::generate_predicate(JVMState* jvms) { |
638 LibraryCallKit kit(jvms, this); | |
639 Compile* C = kit.C; | |
640 int nodes = C->unique(); | |
641 #ifndef PRODUCT | |
642 assert(is_predicted(), "sanity"); | |
12295 | 643 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { |
6894 | 644 char buf[1000]; |
645 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); | |
646 tty->print_cr("Predicate for intrinsic %s", str); | |
647 } | |
648 #endif | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
649 ciMethod* callee = kit.callee(); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
650 const int bci = kit.bci(); |
6894 | 651 |
652 Node* slow_ctl = kit.try_to_predicate(); | |
653 if (!kit.failing()) { | |
12295 | 654 if (C->print_intrinsics() || C->print_inlining()) { |
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7200
diff
changeset
|
655 C->print_inlining(callee, jvms->depth() - 1, bci, is_virtual() ? "(intrinsic, virtual)" : "(intrinsic)"); |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
656 } |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
657 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked); |
6894 | 658 if (C->log()) { |
659 C->log()->elem("predicate_intrinsic id='%s'%s nodes='%d'", | |
660 vmIntrinsics::name_at(intrinsic_id()), | |
661 (is_virtual() ? " virtual='1'" : ""), | |
662 C->unique() - nodes); | |
663 } | |
664 return slow_ctl; // Could be NULL if the check folds. | |
665 } | |
666 | |
667 // The intrinsic bailed out | |
12295 | 668 if (C->print_intrinsics() || C->print_inlining()) { |
6894 | 669 if (jvms->has_method()) { |
670 // Not a root compile. | |
671 const char* msg = "failed to generate predicate for intrinsic"; | |
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7200
diff
changeset
|
672 C->print_inlining(kit.callee(), jvms->depth() - 1, bci, msg); |
6894 | 673 } else { |
674 // Root compile | |
7421
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7200
diff
changeset
|
675 C->print_inlining_stream()->print("Did not generate predicate for intrinsic %s%s at bci:%d in", |
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7200
diff
changeset
|
676 vmIntrinsics::name_at(intrinsic_id()), |
ad5dd04754ee
8005031: Some cleanup in c2 to prepare for incremental inlining support
roland
parents:
7200
diff
changeset
|
677 (is_virtual() ? " (virtual)" : ""), bci); |
6894 | 678 } |
679 } | |
680 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); | |
681 return NULL; | |
682 } | |
683 | |
0 | 684 bool LibraryCallKit::try_to_inline() { |
685 // Handle symbolic names for otherwise undistinguished boolean switches: | |
686 const bool is_store = true; | |
687 const bool is_native_ptr = true; | |
688 const bool is_static = true; | |
7194
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689 const bool is_volatile = true; |
0 | 690 |
3249
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691 if (!jvms()->has_method()) { |
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692 // Root JVMState has a null method. |
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693 assert(map()->memory()->Opcode() == Op_Parm, ""); |
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|
694 // Insert the memory aliasing node |
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|
695 set_all_memory(reset_memory()); |
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|
696 } |
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|
697 assert(merged_memory(), ""); |
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|
698 |
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699 |
0 | 700 switch (intrinsic_id()) { |
7194
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701 case vmIntrinsics::_hashCode: return inline_native_hashcode(intrinsic()->is_virtual(), !is_static); |
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702 case vmIntrinsics::_identityHashCode: return inline_native_hashcode(/*!virtual*/ false, is_static); |
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703 case vmIntrinsics::_getClass: return inline_native_getClass(); |
0 | 704 |
705 case vmIntrinsics::_dsin: | |
706 case vmIntrinsics::_dcos: | |
707 case vmIntrinsics::_dtan: | |
708 case vmIntrinsics::_dabs: | |
709 case vmIntrinsics::_datan2: | |
710 case vmIntrinsics::_dsqrt: | |
711 case vmIntrinsics::_dexp: | |
712 case vmIntrinsics::_dlog: | |
713 case vmIntrinsics::_dlog10: | |
7194
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714 case vmIntrinsics::_dpow: return inline_math_native(intrinsic_id()); |
0 | 715 |
716 case vmIntrinsics::_min: | |
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717 case vmIntrinsics::_max: return inline_min_max(intrinsic_id()); |
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718 |
12972
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719 case vmIntrinsics::_addExactI: return inline_math_addExactI(false /* add */); |
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720 case vmIntrinsics::_addExactL: return inline_math_addExactL(false /* add */); |
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721 case vmIntrinsics::_decrementExactI: return inline_math_subtractExactI(true /* decrement */); |
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722 case vmIntrinsics::_decrementExactL: return inline_math_subtractExactL(true /* decrement */); |
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723 case vmIntrinsics::_incrementExactI: return inline_math_addExactI(true /* increment */); |
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724 case vmIntrinsics::_incrementExactL: return inline_math_addExactL(true /* increment */); |
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725 case vmIntrinsics::_multiplyExactI: return inline_math_multiplyExactI(); |
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726 case vmIntrinsics::_multiplyExactL: return inline_math_multiplyExactL(); |
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727 case vmIntrinsics::_negateExactI: return inline_math_negateExactI(); |
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728 case vmIntrinsics::_negateExactL: return inline_math_negateExactL(); |
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729 case vmIntrinsics::_subtractExactI: return inline_math_subtractExactI(false /* subtract */); |
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|
730 case vmIntrinsics::_subtractExactL: return inline_math_subtractExactL(false /* subtract */); |
12323 | 731 |
7194
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732 case vmIntrinsics::_arraycopy: return inline_arraycopy(); |
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|
733 |
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734 case vmIntrinsics::_compareTo: return inline_string_compareTo(); |
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735 case vmIntrinsics::_indexOf: return inline_string_indexOf(); |
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736 case vmIntrinsics::_equals: return inline_string_equals(); |
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|
737 |
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738 case vmIntrinsics::_getObject: return inline_unsafe_access(!is_native_ptr, !is_store, T_OBJECT, !is_volatile); |
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739 case vmIntrinsics::_getBoolean: return inline_unsafe_access(!is_native_ptr, !is_store, T_BOOLEAN, !is_volatile); |
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740 case vmIntrinsics::_getByte: return inline_unsafe_access(!is_native_ptr, !is_store, T_BYTE, !is_volatile); |
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741 case vmIntrinsics::_getShort: return inline_unsafe_access(!is_native_ptr, !is_store, T_SHORT, !is_volatile); |
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742 case vmIntrinsics::_getChar: return inline_unsafe_access(!is_native_ptr, !is_store, T_CHAR, !is_volatile); |
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743 case vmIntrinsics::_getInt: return inline_unsafe_access(!is_native_ptr, !is_store, T_INT, !is_volatile); |
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744 case vmIntrinsics::_getLong: return inline_unsafe_access(!is_native_ptr, !is_store, T_LONG, !is_volatile); |
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745 case vmIntrinsics::_getFloat: return inline_unsafe_access(!is_native_ptr, !is_store, T_FLOAT, !is_volatile); |
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746 case vmIntrinsics::_getDouble: return inline_unsafe_access(!is_native_ptr, !is_store, T_DOUBLE, !is_volatile); |
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747 |
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748 case vmIntrinsics::_putObject: return inline_unsafe_access(!is_native_ptr, is_store, T_OBJECT, !is_volatile); |
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749 case vmIntrinsics::_putBoolean: return inline_unsafe_access(!is_native_ptr, is_store, T_BOOLEAN, !is_volatile); |
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750 case vmIntrinsics::_putByte: return inline_unsafe_access(!is_native_ptr, is_store, T_BYTE, !is_volatile); |
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751 case vmIntrinsics::_putShort: return inline_unsafe_access(!is_native_ptr, is_store, T_SHORT, !is_volatile); |
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752 case vmIntrinsics::_putChar: return inline_unsafe_access(!is_native_ptr, is_store, T_CHAR, !is_volatile); |
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753 case vmIntrinsics::_putInt: return inline_unsafe_access(!is_native_ptr, is_store, T_INT, !is_volatile); |
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754 case vmIntrinsics::_putLong: return inline_unsafe_access(!is_native_ptr, is_store, T_LONG, !is_volatile); |
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755 case vmIntrinsics::_putFloat: return inline_unsafe_access(!is_native_ptr, is_store, T_FLOAT, !is_volatile); |
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756 case vmIntrinsics::_putDouble: return inline_unsafe_access(!is_native_ptr, is_store, T_DOUBLE, !is_volatile); |
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|
757 |
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758 case vmIntrinsics::_getByte_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_BYTE, !is_volatile); |
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759 case vmIntrinsics::_getShort_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_SHORT, !is_volatile); |
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760 case vmIntrinsics::_getChar_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_CHAR, !is_volatile); |
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761 case vmIntrinsics::_getInt_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_INT, !is_volatile); |
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762 case vmIntrinsics::_getLong_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_LONG, !is_volatile); |
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763 case vmIntrinsics::_getFloat_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_FLOAT, !is_volatile); |
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|
764 case vmIntrinsics::_getDouble_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_DOUBLE, !is_volatile); |
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765 case vmIntrinsics::_getAddress_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_ADDRESS, !is_volatile); |
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|
766 |
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767 case vmIntrinsics::_putByte_raw: return inline_unsafe_access( is_native_ptr, is_store, T_BYTE, !is_volatile); |
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768 case vmIntrinsics::_putShort_raw: return inline_unsafe_access( is_native_ptr, is_store, T_SHORT, !is_volatile); |
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|
769 case vmIntrinsics::_putChar_raw: return inline_unsafe_access( is_native_ptr, is_store, T_CHAR, !is_volatile); |
beebba0acc11
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|
770 case vmIntrinsics::_putInt_raw: return inline_unsafe_access( is_native_ptr, is_store, T_INT, !is_volatile); |
beebba0acc11
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771 case vmIntrinsics::_putLong_raw: return inline_unsafe_access( is_native_ptr, is_store, T_LONG, !is_volatile); |
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|
772 case vmIntrinsics::_putFloat_raw: return inline_unsafe_access( is_native_ptr, is_store, T_FLOAT, !is_volatile); |
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773 case vmIntrinsics::_putDouble_raw: return inline_unsafe_access( is_native_ptr, is_store, T_DOUBLE, !is_volatile); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
774 case vmIntrinsics::_putAddress_raw: return inline_unsafe_access( is_native_ptr, is_store, T_ADDRESS, !is_volatile); |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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changeset
|
775 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
776 case vmIntrinsics::_getObjectVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_OBJECT, is_volatile); |
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777 case vmIntrinsics::_getBooleanVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_BOOLEAN, is_volatile); |
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778 case vmIntrinsics::_getByteVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_BYTE, is_volatile); |
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|
779 case vmIntrinsics::_getShortVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_SHORT, is_volatile); |
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780 case vmIntrinsics::_getCharVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_CHAR, is_volatile); |
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781 case vmIntrinsics::_getIntVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_INT, is_volatile); |
beebba0acc11
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twisti
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782 case vmIntrinsics::_getLongVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_LONG, is_volatile); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
783 case vmIntrinsics::_getFloatVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_FLOAT, is_volatile); |
beebba0acc11
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changeset
|
784 case vmIntrinsics::_getDoubleVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_DOUBLE, is_volatile); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
785 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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changeset
|
786 case vmIntrinsics::_putObjectVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_OBJECT, is_volatile); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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changeset
|
787 case vmIntrinsics::_putBooleanVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_BOOLEAN, is_volatile); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
788 case vmIntrinsics::_putByteVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_BYTE, is_volatile); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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changeset
|
789 case vmIntrinsics::_putShortVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_SHORT, is_volatile); |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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changeset
|
790 case vmIntrinsics::_putCharVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_CHAR, is_volatile); |
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twisti
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changeset
|
791 case vmIntrinsics::_putIntVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_INT, is_volatile); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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changeset
|
792 case vmIntrinsics::_putLongVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_LONG, is_volatile); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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changeset
|
793 case vmIntrinsics::_putFloatVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_FLOAT, is_volatile); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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changeset
|
794 case vmIntrinsics::_putDoubleVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_DOUBLE, is_volatile); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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changeset
|
795 |
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796 case vmIntrinsics::_prefetchRead: return inline_unsafe_prefetch(!is_native_ptr, !is_store, !is_static); |
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797 case vmIntrinsics::_prefetchWrite: return inline_unsafe_prefetch(!is_native_ptr, is_store, !is_static); |
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798 case vmIntrinsics::_prefetchReadStatic: return inline_unsafe_prefetch(!is_native_ptr, !is_store, is_static); |
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799 case vmIntrinsics::_prefetchWriteStatic: return inline_unsafe_prefetch(!is_native_ptr, is_store, is_static); |
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800 |
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801 case vmIntrinsics::_compareAndSwapObject: return inline_unsafe_load_store(T_OBJECT, LS_cmpxchg); |
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802 case vmIntrinsics::_compareAndSwapInt: return inline_unsafe_load_store(T_INT, LS_cmpxchg); |
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803 case vmIntrinsics::_compareAndSwapLong: return inline_unsafe_load_store(T_LONG, LS_cmpxchg); |
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804 |
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805 case vmIntrinsics::_putOrderedObject: return inline_unsafe_ordered_store(T_OBJECT); |
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806 case vmIntrinsics::_putOrderedInt: return inline_unsafe_ordered_store(T_INT); |
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807 case vmIntrinsics::_putOrderedLong: return inline_unsafe_ordered_store(T_LONG); |
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808 |
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809 case vmIntrinsics::_getAndAddInt: return inline_unsafe_load_store(T_INT, LS_xadd); |
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810 case vmIntrinsics::_getAndAddLong: return inline_unsafe_load_store(T_LONG, LS_xadd); |
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811 case vmIntrinsics::_getAndSetInt: return inline_unsafe_load_store(T_INT, LS_xchg); |
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812 case vmIntrinsics::_getAndSetLong: return inline_unsafe_load_store(T_LONG, LS_xchg); |
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813 case vmIntrinsics::_getAndSetObject: return inline_unsafe_load_store(T_OBJECT, LS_xchg); |
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814 |
7425 | 815 case vmIntrinsics::_loadFence: |
816 case vmIntrinsics::_storeFence: | |
817 case vmIntrinsics::_fullFence: return inline_unsafe_fence(intrinsic_id()); | |
818 | |
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819 case vmIntrinsics::_currentThread: return inline_native_currentThread(); |
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820 case vmIntrinsics::_isInterrupted: return inline_native_isInterrupted(); |
0 | 821 |
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822 #ifdef TRACE_HAVE_INTRINSICS |
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823 case vmIntrinsics::_classID: return inline_native_classID(); |
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824 case vmIntrinsics::_threadID: return inline_native_threadID(); |
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825 case vmIntrinsics::_counterTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, TRACE_TIME_METHOD), "counterTime"); |
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826 #endif |
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827 case vmIntrinsics::_currentTimeMillis: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeMillis), "currentTimeMillis"); |
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828 case vmIntrinsics::_nanoTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeNanos), "nanoTime"); |
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829 case vmIntrinsics::_allocateInstance: return inline_unsafe_allocate(); |
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830 case vmIntrinsics::_copyMemory: return inline_unsafe_copyMemory(); |
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831 case vmIntrinsics::_newArray: return inline_native_newArray(); |
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832 case vmIntrinsics::_getLength: return inline_native_getLength(); |
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833 case vmIntrinsics::_copyOf: return inline_array_copyOf(false); |
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834 case vmIntrinsics::_copyOfRange: return inline_array_copyOf(true); |
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835 case vmIntrinsics::_equalsC: return inline_array_equals(); |
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836 case vmIntrinsics::_clone: return inline_native_clone(intrinsic()->is_virtual()); |
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837 |
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838 case vmIntrinsics::_isAssignableFrom: return inline_native_subtype_check(); |
0 | 839 |
840 case vmIntrinsics::_isInstance: | |
841 case vmIntrinsics::_getModifiers: | |
842 case vmIntrinsics::_isInterface: | |
843 case vmIntrinsics::_isArray: | |
844 case vmIntrinsics::_isPrimitive: | |
845 case vmIntrinsics::_getSuperclass: | |
846 case vmIntrinsics::_getComponentType: | |
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847 case vmIntrinsics::_getClassAccessFlags: return inline_native_Class_query(intrinsic_id()); |
0 | 848 |
849 case vmIntrinsics::_floatToRawIntBits: | |
850 case vmIntrinsics::_floatToIntBits: | |
851 case vmIntrinsics::_intBitsToFloat: | |
852 case vmIntrinsics::_doubleToRawLongBits: | |
853 case vmIntrinsics::_doubleToLongBits: | |
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854 case vmIntrinsics::_longBitsToDouble: return inline_fp_conversions(intrinsic_id()); |
0 | 855 |
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856 case vmIntrinsics::_numberOfLeadingZeros_i: |
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857 case vmIntrinsics::_numberOfLeadingZeros_l: |
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858 case vmIntrinsics::_numberOfTrailingZeros_i: |
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859 case vmIntrinsics::_numberOfTrailingZeros_l: |
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860 case vmIntrinsics::_bitCount_i: |
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861 case vmIntrinsics::_bitCount_l: |
0 | 862 case vmIntrinsics::_reverseBytes_i: |
863 case vmIntrinsics::_reverseBytes_l: | |
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864 case vmIntrinsics::_reverseBytes_s: |
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865 case vmIntrinsics::_reverseBytes_c: return inline_number_methods(intrinsic_id()); |
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866 |
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867 case vmIntrinsics::_getCallerClass: return inline_native_Reflection_getCallerClass(); |
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868 |
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869 case vmIntrinsics::_Reference_get: return inline_reference_get(); |
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870 |
6894 | 871 case vmIntrinsics::_aescrypt_encryptBlock: |
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872 case vmIntrinsics::_aescrypt_decryptBlock: return inline_aescrypt_Block(intrinsic_id()); |
6894 | 873 |
874 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
875 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
876 return inline_cipherBlockChaining_AESCrypt(intrinsic_id()); | |
877 | |
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878 case vmIntrinsics::_encodeISOArray: |
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879 return inline_encodeISOArray(); |
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880 |
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881 case vmIntrinsics::_updateCRC32: |
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882 return inline_updateCRC32(); |
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883 case vmIntrinsics::_updateBytesCRC32: |
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884 return inline_updateBytesCRC32(); |
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885 case vmIntrinsics::_updateByteBufferCRC32: |
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886 return inline_updateByteBufferCRC32(); |
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887 |
0 | 888 default: |
889 // If you get here, it may be that someone has added a new intrinsic | |
890 // to the list in vmSymbols.hpp without implementing it here. | |
891 #ifndef PRODUCT | |
892 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { | |
893 tty->print_cr("*** Warning: Unimplemented intrinsic %s(%d)", | |
894 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); | |
895 } | |
896 #endif | |
897 return false; | |
898 } | |
899 } | |
900 | |
6894 | 901 Node* LibraryCallKit::try_to_predicate() { |
902 if (!jvms()->has_method()) { | |
903 // Root JVMState has a null method. | |
904 assert(map()->memory()->Opcode() == Op_Parm, ""); | |
905 // Insert the memory aliasing node | |
906 set_all_memory(reset_memory()); | |
907 } | |
908 assert(merged_memory(), ""); | |
909 | |
910 switch (intrinsic_id()) { | |
911 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
912 return inline_cipherBlockChaining_AESCrypt_predicate(false); | |
913 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
914 return inline_cipherBlockChaining_AESCrypt_predicate(true); | |
915 | |
916 default: | |
917 // If you get here, it may be that someone has added a new intrinsic | |
918 // to the list in vmSymbols.hpp without implementing it here. | |
919 #ifndef PRODUCT | |
920 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { | |
921 tty->print_cr("*** Warning: Unimplemented predicate for intrinsic %s(%d)", | |
922 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); | |
923 } | |
924 #endif | |
925 Node* slow_ctl = control(); | |
926 set_control(top()); // No fast path instrinsic | |
927 return slow_ctl; | |
928 } | |
929 } | |
930 | |
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931 //------------------------------set_result------------------------------- |
0 | 932 // Helper function for finishing intrinsics. |
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933 void LibraryCallKit::set_result(RegionNode* region, PhiNode* value) { |
0 | 934 record_for_igvn(region); |
935 set_control(_gvn.transform(region)); | |
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936 set_result( _gvn.transform(value)); |
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937 assert(value->type()->basic_type() == result()->bottom_type()->basic_type(), "sanity"); |
0 | 938 } |
939 | |
940 //------------------------------generate_guard--------------------------- | |
941 // Helper function for generating guarded fast-slow graph structures. | |
942 // The given 'test', if true, guards a slow path. If the test fails | |
943 // then a fast path can be taken. (We generally hope it fails.) | |
944 // In all cases, GraphKit::control() is updated to the fast path. | |
945 // The returned value represents the control for the slow path. | |
946 // The return value is never 'top'; it is either a valid control | |
947 // or NULL if it is obvious that the slow path can never be taken. | |
948 // Also, if region and the slow control are not NULL, the slow edge | |
949 // is appended to the region. | |
950 Node* LibraryCallKit::generate_guard(Node* test, RegionNode* region, float true_prob) { | |
951 if (stopped()) { | |
952 // Already short circuited. | |
953 return NULL; | |
954 } | |
955 | |
956 // Build an if node and its projections. | |
957 // If test is true we take the slow path, which we assume is uncommon. | |
958 if (_gvn.type(test) == TypeInt::ZERO) { | |
959 // The slow branch is never taken. No need to build this guard. | |
960 return NULL; | |
961 } | |
962 | |
963 IfNode* iff = create_and_map_if(control(), test, true_prob, COUNT_UNKNOWN); | |
964 | |
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965 Node* if_slow = _gvn.transform(new (C) IfTrueNode(iff)); |
0 | 966 if (if_slow == top()) { |
967 // The slow branch is never taken. No need to build this guard. | |
968 return NULL; | |
969 } | |
970 | |
971 if (region != NULL) | |
972 region->add_req(if_slow); | |
973 | |
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974 Node* if_fast = _gvn.transform(new (C) IfFalseNode(iff)); |
0 | 975 set_control(if_fast); |
976 | |
977 return if_slow; | |
978 } | |
979 | |
980 inline Node* LibraryCallKit::generate_slow_guard(Node* test, RegionNode* region) { | |
981 return generate_guard(test, region, PROB_UNLIKELY_MAG(3)); | |
982 } | |
983 inline Node* LibraryCallKit::generate_fair_guard(Node* test, RegionNode* region) { | |
984 return generate_guard(test, region, PROB_FAIR); | |
985 } | |
986 | |
987 inline Node* LibraryCallKit::generate_negative_guard(Node* index, RegionNode* region, | |
988 Node* *pos_index) { | |
989 if (stopped()) | |
990 return NULL; // already stopped | |
991 if (_gvn.type(index)->higher_equal(TypeInt::POS)) // [0,maxint] | |
992 return NULL; // index is already adequately typed | |
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993 Node* cmp_lt = _gvn.transform(new (C) CmpINode(index, intcon(0))); |
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994 Node* bol_lt = _gvn.transform(new (C) BoolNode(cmp_lt, BoolTest::lt)); |
0 | 995 Node* is_neg = generate_guard(bol_lt, region, PROB_MIN); |
996 if (is_neg != NULL && pos_index != NULL) { | |
997 // Emulate effect of Parse::adjust_map_after_if. | |
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998 Node* ccast = new (C) CastIINode(index, TypeInt::POS); |
0 | 999 ccast->set_req(0, control()); |
1000 (*pos_index) = _gvn.transform(ccast); | |
1001 } | |
1002 return is_neg; | |
1003 } | |
1004 | |
1005 inline Node* LibraryCallKit::generate_nonpositive_guard(Node* index, bool never_negative, | |
1006 Node* *pos_index) { | |
1007 if (stopped()) | |
1008 return NULL; // already stopped | |
1009 if (_gvn.type(index)->higher_equal(TypeInt::POS1)) // [1,maxint] | |
1010 return NULL; // index is already adequately typed | |
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1011 Node* cmp_le = _gvn.transform(new (C) CmpINode(index, intcon(0))); |
0 | 1012 BoolTest::mask le_or_eq = (never_negative ? BoolTest::eq : BoolTest::le); |
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1013 Node* bol_le = _gvn.transform(new (C) BoolNode(cmp_le, le_or_eq)); |
0 | 1014 Node* is_notp = generate_guard(bol_le, NULL, PROB_MIN); |
1015 if (is_notp != NULL && pos_index != NULL) { | |
1016 // Emulate effect of Parse::adjust_map_after_if. | |
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1017 Node* ccast = new (C) CastIINode(index, TypeInt::POS1); |
0 | 1018 ccast->set_req(0, control()); |
1019 (*pos_index) = _gvn.transform(ccast); | |
1020 } | |
1021 return is_notp; | |
1022 } | |
1023 | |
1024 // Make sure that 'position' is a valid limit index, in [0..length]. | |
1025 // There are two equivalent plans for checking this: | |
1026 // A. (offset + copyLength) unsigned<= arrayLength | |
1027 // B. offset <= (arrayLength - copyLength) | |
1028 // We require that all of the values above, except for the sum and | |
1029 // difference, are already known to be non-negative. | |
1030 // Plan A is robust in the face of overflow, if offset and copyLength | |
1031 // are both hugely positive. | |
1032 // | |
1033 // Plan B is less direct and intuitive, but it does not overflow at | |
1034 // all, since the difference of two non-negatives is always | |
1035 // representable. Whenever Java methods must perform the equivalent | |
1036 // check they generally use Plan B instead of Plan A. | |
1037 // For the moment we use Plan A. | |
1038 inline Node* LibraryCallKit::generate_limit_guard(Node* offset, | |
1039 Node* subseq_length, | |
1040 Node* array_length, | |
1041 RegionNode* region) { | |
1042 if (stopped()) | |
1043 return NULL; // already stopped | |
1044 bool zero_offset = _gvn.type(offset) == TypeInt::ZERO; | |
4778 | 1045 if (zero_offset && subseq_length->eqv_uncast(array_length)) |
0 | 1046 return NULL; // common case of whole-array copy |
1047 Node* last = subseq_length; | |
1048 if (!zero_offset) // last += offset | |
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1049 last = _gvn.transform(new (C) AddINode(last, offset)); |
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1050 Node* cmp_lt = _gvn.transform(new (C) CmpUNode(array_length, last)); |
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1051 Node* bol_lt = _gvn.transform(new (C) BoolNode(cmp_lt, BoolTest::lt)); |
0 | 1052 Node* is_over = generate_guard(bol_lt, region, PROB_MIN); |
1053 return is_over; | |
1054 } | |
1055 | |
1056 | |
1057 //--------------------------generate_current_thread-------------------- | |
1058 Node* LibraryCallKit::generate_current_thread(Node* &tls_output) { | |
1059 ciKlass* thread_klass = env()->Thread_klass(); | |
1060 const Type* thread_type = TypeOopPtr::make_from_klass(thread_klass)->cast_to_ptr_type(TypePtr::NotNull); | |
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1061 Node* thread = _gvn.transform(new (C) ThreadLocalNode()); |
0 | 1062 Node* p = basic_plus_adr(top()/*!oop*/, thread, in_bytes(JavaThread::threadObj_offset())); |
1063 Node* threadObj = make_load(NULL, p, thread_type, T_OBJECT); | |
1064 tls_output = thread; | |
1065 return threadObj; | |
1066 } | |
1067 | |
1068 | |
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1069 //------------------------------make_string_method_node------------------------ |
6057 | 1070 // Helper method for String intrinsic functions. This version is called |
1071 // with str1 and str2 pointing to String object nodes. | |
1072 // | |
1073 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1, Node* str2) { | |
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1074 Node* no_ctrl = NULL; |
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1075 |
6057 | 1076 // Get start addr of string |
1077 Node* str1_value = load_String_value(no_ctrl, str1); | |
1078 Node* str1_offset = load_String_offset(no_ctrl, str1); | |
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1079 Node* str1_start = array_element_address(str1_value, str1_offset, T_CHAR); |
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1080 |
6057 | 1081 // Get length of string 1 |
1082 Node* str1_len = load_String_length(no_ctrl, str1); | |
1083 | |
1084 Node* str2_value = load_String_value(no_ctrl, str2); | |
1085 Node* str2_offset = load_String_offset(no_ctrl, str2); | |
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1086 Node* str2_start = array_element_address(str2_value, str2_offset, T_CHAR); |
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1087 |
6057 | 1088 Node* str2_len = NULL; |
1089 Node* result = NULL; | |
1090 | |
1091 switch (opcode) { | |
1092 case Op_StrIndexOf: | |
1093 // Get length of string 2 | |
1094 str2_len = load_String_length(no_ctrl, str2); | |
1095 | |
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1096 result = new (C) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1097 str1_start, str1_len, str2_start, str2_len); |
1098 break; | |
1099 case Op_StrComp: | |
1100 // Get length of string 2 | |
1101 str2_len = load_String_length(no_ctrl, str2); | |
1102 | |
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1103 result = new (C) StrCompNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1104 str1_start, str1_len, str2_start, str2_len); |
1105 break; | |
1106 case Op_StrEquals: | |
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1107 result = new (C) StrEqualsNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1108 str1_start, str2_start, str1_len); |
1109 break; | |
1110 default: | |
1111 ShouldNotReachHere(); | |
1112 return NULL; | |
1113 } | |
1114 | |
1115 // All these intrinsics have checks. | |
1116 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1117 | |
1118 return _gvn.transform(result); | |
1119 } | |
1120 | |
1121 // Helper method for String intrinsic functions. This version is called | |
1122 // with str1 and str2 pointing to char[] nodes, with cnt1 and cnt2 pointing | |
1123 // to Int nodes containing the lenghts of str1 and str2. | |
1124 // | |
1125 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2) { | |
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1126 Node* result = NULL; |
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1127 switch (opcode) { |
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1128 case Op_StrIndexOf: |
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1129 result = new (C) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1130 str1_start, cnt1, str2_start, cnt2); |
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1131 break; |
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1132 case Op_StrComp: |
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1133 result = new (C) StrCompNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1134 str1_start, cnt1, str2_start, cnt2); |
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1135 break; |
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1136 case Op_StrEquals: |
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1137 result = new (C) StrEqualsNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1138 str1_start, str2_start, cnt1); |
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1139 break; |
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1140 default: |
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1141 ShouldNotReachHere(); |
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1142 return NULL; |
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1143 } |
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1144 |
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1145 // All these intrinsics have checks. |
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1146 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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1147 |
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1148 return _gvn.transform(result); |
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1149 } |
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1150 |
0 | 1151 //------------------------------inline_string_compareTo------------------------ |
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1152 // public int java.lang.String.compareTo(String anotherString); |
0 | 1153 bool LibraryCallKit::inline_string_compareTo() { |
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1154 Node* receiver = null_check(argument(0)); |
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1155 Node* arg = null_check(argument(1)); |
0 | 1156 if (stopped()) { |
1157 return true; | |
1158 } | |
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1159 set_result(make_string_method_node(Op_StrComp, receiver, arg)); |
0 | 1160 return true; |
1161 } | |
1162 | |
681 | 1163 //------------------------------inline_string_equals------------------------ |
1164 bool LibraryCallKit::inline_string_equals() { | |
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1165 Node* receiver = null_check_receiver(); |
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1166 // NOTE: Do not null check argument for String.equals() because spec |
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1167 // allows to specify NULL as argument. |
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1168 Node* argument = this->argument(1); |
681 | 1169 if (stopped()) { |
1170 return true; | |
1171 } | |
1172 | |
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1173 // paths (plus control) merge |
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1174 RegionNode* region = new (C) RegionNode(5); |
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1175 Node* phi = new (C) PhiNode(region, TypeInt::BOOL); |
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1176 |
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1177 // does source == target string? |
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1178 Node* cmp = _gvn.transform(new (C) CmpPNode(receiver, argument)); |
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1179 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::eq)); |
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1180 |
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1181 Node* if_eq = generate_slow_guard(bol, NULL); |
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1182 if (if_eq != NULL) { |
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1183 // receiver == argument |
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1184 phi->init_req(2, intcon(1)); |
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1185 region->init_req(2, if_eq); |
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1186 } |
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1187 |
681 | 1188 // get String klass for instanceOf |
1189 ciInstanceKlass* klass = env()->String_klass(); | |
1190 | |
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1191 if (!stopped()) { |
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1192 Node* inst = gen_instanceof(argument, makecon(TypeKlassPtr::make(klass))); |
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1193 Node* cmp = _gvn.transform(new (C) CmpINode(inst, intcon(1))); |
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1194 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::ne)); |
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1195 |
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1196 Node* inst_false = generate_guard(bol, NULL, PROB_MIN); |
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1197 //instanceOf == true, fallthrough |
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1198 |
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1199 if (inst_false != NULL) { |
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1200 phi->init_req(3, intcon(0)); |
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1201 region->init_req(3, inst_false); |
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1202 } |
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1203 } |
681 | 1204 |
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1205 if (!stopped()) { |
6057 | 1206 const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(klass); |
1207 | |
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1208 // Properly cast the argument to String |
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1209 argument = _gvn.transform(new (C) CheckCastPPNode(control(), argument, string_type)); |
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1210 // This path is taken only when argument's type is String:NotNull. |
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1211 argument = cast_not_null(argument, false); |
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1212 |
6057 | 1213 Node* no_ctrl = NULL; |
1214 | |
1215 // Get start addr of receiver | |
1216 Node* receiver_val = load_String_value(no_ctrl, receiver); | |
1217 Node* receiver_offset = load_String_offset(no_ctrl, receiver); | |
1218 Node* receiver_start = array_element_address(receiver_val, receiver_offset, T_CHAR); | |
1219 | |
1220 // Get length of receiver | |
1221 Node* receiver_cnt = load_String_length(no_ctrl, receiver); | |
1222 | |
1223 // Get start addr of argument | |
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1224 Node* argument_val = load_String_value(no_ctrl, argument); |
6057 | 1225 Node* argument_offset = load_String_offset(no_ctrl, argument); |
1226 Node* argument_start = array_element_address(argument_val, argument_offset, T_CHAR); | |
1227 | |
1228 // Get length of argument | |
1229 Node* argument_cnt = load_String_length(no_ctrl, argument); | |
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1230 |
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1231 // Check for receiver count != argument count |
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1232 Node* cmp = _gvn.transform(new(C) CmpINode(receiver_cnt, argument_cnt)); |
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1233 Node* bol = _gvn.transform(new(C) BoolNode(cmp, BoolTest::ne)); |
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1234 Node* if_ne = generate_slow_guard(bol, NULL); |
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1235 if (if_ne != NULL) { |
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1236 phi->init_req(4, intcon(0)); |
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1237 region->init_req(4, if_ne); |
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1238 } |
6057 | 1239 |
1240 // Check for count == 0 is done by assembler code for StrEquals. | |
1241 | |
1242 if (!stopped()) { | |
1243 Node* equals = make_string_method_node(Op_StrEquals, receiver_start, receiver_cnt, argument_start, argument_cnt); | |
1244 phi->init_req(1, equals); | |
1245 region->init_req(1, control()); | |
1246 } | |
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1247 } |
681 | 1248 |
1249 // post merge | |
1250 set_control(_gvn.transform(region)); | |
1251 record_for_igvn(region); | |
1252 | |
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1253 set_result(_gvn.transform(phi)); |
681 | 1254 return true; |
1255 } | |
1256 | |
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1257 //------------------------------inline_array_equals---------------------------- |
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1258 bool LibraryCallKit::inline_array_equals() { |
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1259 Node* arg1 = argument(0); |
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1260 Node* arg2 = argument(1); |
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1261 set_result(_gvn.transform(new (C) AryEqNode(control(), memory(TypeAryPtr::CHARS), arg1, arg2))); |
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1262 return true; |
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1263 } |
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1264 |
0 | 1265 // Java version of String.indexOf(constant string) |
1266 // class StringDecl { | |
1267 // StringDecl(char[] ca) { | |
1268 // offset = 0; | |
1269 // count = ca.length; | |
1270 // value = ca; | |
1271 // } | |
1272 // int offset; | |
1273 // int count; | |
1274 // char[] value; | |
1275 // } | |
1276 // | |
1277 // static int string_indexOf_J(StringDecl string_object, char[] target_object, | |
1278 // int targetOffset, int cache_i, int md2) { | |
1279 // int cache = cache_i; | |
1280 // int sourceOffset = string_object.offset; | |
1281 // int sourceCount = string_object.count; | |
1282 // int targetCount = target_object.length; | |
1283 // | |
1284 // int targetCountLess1 = targetCount - 1; | |
1285 // int sourceEnd = sourceOffset + sourceCount - targetCountLess1; | |
1286 // | |
1287 // char[] source = string_object.value; | |
1288 // char[] target = target_object; | |
1289 // int lastChar = target[targetCountLess1]; | |
1290 // | |
1291 // outer_loop: | |
1292 // for (int i = sourceOffset; i < sourceEnd; ) { | |
1293 // int src = source[i + targetCountLess1]; | |
1294 // if (src == lastChar) { | |
1295 // // With random strings and a 4-character alphabet, | |
1296 // // reverse matching at this point sets up 0.8% fewer | |
1297 // // frames, but (paradoxically) makes 0.3% more probes. | |
1298 // // Since those probes are nearer the lastChar probe, | |
1299 // // there is may be a net D$ win with reverse matching. | |
1300 // // But, reversing loop inhibits unroll of inner loop | |
1301 // // for unknown reason. So, does running outer loop from | |
1302 // // (sourceOffset - targetCountLess1) to (sourceOffset + sourceCount) | |
1303 // for (int j = 0; j < targetCountLess1; j++) { | |
1304 // if (target[targetOffset + j] != source[i+j]) { | |
1305 // if ((cache & (1 << source[i+j])) == 0) { | |
1306 // if (md2 < j+1) { | |
1307 // i += j+1; | |
1308 // continue outer_loop; | |
1309 // } | |
1310 // } | |
1311 // i += md2; | |
1312 // continue outer_loop; | |
1313 // } | |
1314 // } | |
1315 // return i - sourceOffset; | |
1316 // } | |
1317 // if ((cache & (1 << src)) == 0) { | |
1318 // i += targetCountLess1; | |
1319 // } // using "i += targetCount;" and an "else i++;" causes a jump to jump. | |
1320 // i++; | |
1321 // } | |
1322 // return -1; | |
1323 // } | |
1324 | |
1325 //------------------------------string_indexOf------------------------ | |
1326 Node* LibraryCallKit::string_indexOf(Node* string_object, ciTypeArray* target_array, jint targetOffset_i, | |
1327 jint cache_i, jint md2_i) { | |
1328 | |
1329 Node* no_ctrl = NULL; | |
1330 float likely = PROB_LIKELY(0.9); | |
1331 float unlikely = PROB_UNLIKELY(0.9); | |
1332 | |
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1333 const int nargs = 0; // no arguments to push back for uncommon trap in predicate |
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1334 |
6057 | 1335 Node* source = load_String_value(no_ctrl, string_object); |
1336 Node* sourceOffset = load_String_offset(no_ctrl, string_object); | |
1337 Node* sourceCount = load_String_length(no_ctrl, string_object); | |
0 | 1338 |
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1339 Node* target = _gvn.transform( makecon(TypeOopPtr::make_from_constant(target_array, true))); |
0 | 1340 jint target_length = target_array->length(); |
1341 const TypeAry* target_array_type = TypeAry::make(TypeInt::CHAR, TypeInt::make(0, target_length, Type::WidenMin)); | |
1342 const TypeAryPtr* target_type = TypeAryPtr::make(TypePtr::BotPTR, target_array_type, target_array->klass(), true, Type::OffsetBot); | |
1343 | |
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1344 // String.value field is known to be @Stable. |
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1345 if (UseImplicitStableValues) { |
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1346 target = cast_array_to_stable(target, target_type); |
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1347 } |
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1348 |
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1349 IdealKit kit(this, false, true); |
0 | 1350 #define __ kit. |
1351 Node* zero = __ ConI(0); | |
1352 Node* one = __ ConI(1); | |
1353 Node* cache = __ ConI(cache_i); | |
1354 Node* md2 = __ ConI(md2_i); | |
1355 Node* lastChar = __ ConI(target_array->char_at(target_length - 1)); | |
1356 Node* targetCount = __ ConI(target_length); | |
1357 Node* targetCountLess1 = __ ConI(target_length - 1); | |
1358 Node* targetOffset = __ ConI(targetOffset_i); | |
1359 Node* sourceEnd = __ SubI(__ AddI(sourceOffset, sourceCount), targetCountLess1); | |
1360 | |
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1361 IdealVariable rtn(kit), i(kit), j(kit); __ declarations_done(); |
0 | 1362 Node* outer_loop = __ make_label(2 /* goto */); |
1363 Node* return_ = __ make_label(1); | |
1364 | |
1365 __ set(rtn,__ ConI(-1)); | |
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1366 __ loop(this, nargs, i, sourceOffset, BoolTest::lt, sourceEnd); { |
0 | 1367 Node* i2 = __ AddI(__ value(i), targetCountLess1); |
1368 // pin to prohibit loading of "next iteration" value which may SEGV (rare) | |
1369 Node* src = load_array_element(__ ctrl(), source, i2, TypeAryPtr::CHARS); | |
1370 __ if_then(src, BoolTest::eq, lastChar, unlikely); { | |
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1371 __ loop(this, nargs, j, zero, BoolTest::lt, targetCountLess1); { |
0 | 1372 Node* tpj = __ AddI(targetOffset, __ value(j)); |
1373 Node* targ = load_array_element(no_ctrl, target, tpj, target_type); | |
1374 Node* ipj = __ AddI(__ value(i), __ value(j)); | |
1375 Node* src2 = load_array_element(no_ctrl, source, ipj, TypeAryPtr::CHARS); | |
1376 __ if_then(targ, BoolTest::ne, src2); { | |
1377 __ if_then(__ AndI(cache, __ LShiftI(one, src2)), BoolTest::eq, zero); { | |
1378 __ if_then(md2, BoolTest::lt, __ AddI(__ value(j), one)); { | |
1379 __ increment(i, __ AddI(__ value(j), one)); | |
1380 __ goto_(outer_loop); | |
1381 } __ end_if(); __ dead(j); | |
1382 }__ end_if(); __ dead(j); | |
1383 __ increment(i, md2); | |
1384 __ goto_(outer_loop); | |
1385 }__ end_if(); | |
1386 __ increment(j, one); | |
1387 }__ end_loop(); __ dead(j); | |
1388 __ set(rtn, __ SubI(__ value(i), sourceOffset)); __ dead(i); | |
1389 __ goto_(return_); | |
1390 }__ end_if(); | |
1391 __ if_then(__ AndI(cache, __ LShiftI(one, src)), BoolTest::eq, zero, likely); { | |
1392 __ increment(i, targetCountLess1); | |
1393 }__ end_if(); | |
1394 __ increment(i, one); | |
1395 __ bind(outer_loop); | |
1396 }__ end_loop(); __ dead(i); | |
1397 __ bind(return_); | |
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1398 |
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1399 // Final sync IdealKit and GraphKit. |
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1400 final_sync(kit); |
0 | 1401 Node* result = __ value(rtn); |
1402 #undef __ | |
1403 C->set_has_loops(true); | |
1404 return result; | |
1405 } | |
1406 | |
1407 //------------------------------inline_string_indexOf------------------------ | |
1408 bool LibraryCallKit::inline_string_indexOf() { | |
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1409 Node* receiver = argument(0); |
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1410 Node* arg = argument(1); |
681 | 1411 |
1412 Node* result; | |
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1413 // Disable the use of pcmpestri until it can be guaranteed that |
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1414 // the load doesn't cross into the uncommited space. |
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1415 if (Matcher::has_match_rule(Op_StrIndexOf) && |
681 | 1416 UseSSE42Intrinsics) { |
1417 // Generate SSE4.2 version of indexOf | |
1418 // We currently only have match rules that use SSE4.2 | |
1419 | |
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1420 receiver = null_check(receiver); |
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1421 arg = null_check(arg); |
681 | 1422 if (stopped()) { |
1423 return true; | |
1424 } | |
1425 | |
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1426 ciInstanceKlass* str_klass = env()->String_klass(); |
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1427 const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(str_klass); |
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1428 |
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1429 // Make the merge point |
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1430 RegionNode* result_rgn = new (C) RegionNode(4); |
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1431 Node* result_phi = new (C) PhiNode(result_rgn, TypeInt::INT); |
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1432 Node* no_ctrl = NULL; |
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1433 |
6057 | 1434 // Get start addr of source string |
1435 Node* source = load_String_value(no_ctrl, receiver); | |
1436 Node* source_offset = load_String_offset(no_ctrl, receiver); | |
1437 Node* source_start = array_element_address(source, source_offset, T_CHAR); | |
1438 | |
1439 // Get length of source string | |
1440 Node* source_cnt = load_String_length(no_ctrl, receiver); | |
1441 | |
1442 // Get start addr of substring | |
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1443 Node* substr = load_String_value(no_ctrl, arg); |
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1444 Node* substr_offset = load_String_offset(no_ctrl, arg); |
6057 | 1445 Node* substr_start = array_element_address(substr, substr_offset, T_CHAR); |
1446 | |
1447 // Get length of source string | |
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1448 Node* substr_cnt = load_String_length(no_ctrl, arg); |
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1449 |
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1450 // Check for substr count > string count |
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1451 Node* cmp = _gvn.transform(new(C) CmpINode(substr_cnt, source_cnt)); |
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1452 Node* bol = _gvn.transform(new(C) BoolNode(cmp, BoolTest::gt)); |
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1453 Node* if_gt = generate_slow_guard(bol, NULL); |
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1454 if (if_gt != NULL) { |
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1455 result_phi->init_req(2, intcon(-1)); |
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1456 result_rgn->init_req(2, if_gt); |
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1457 } |
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1458 |
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1459 if (!stopped()) { |
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1460 // Check for substr count == 0 |
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1461 cmp = _gvn.transform(new(C) CmpINode(substr_cnt, intcon(0))); |
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1462 bol = _gvn.transform(new(C) BoolNode(cmp, BoolTest::eq)); |
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1463 Node* if_zero = generate_slow_guard(bol, NULL); |
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1464 if (if_zero != NULL) { |
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1465 result_phi->init_req(3, intcon(0)); |
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1466 result_rgn->init_req(3, if_zero); |
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1467 } |
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1468 } |
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1469 |
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1470 if (!stopped()) { |
6057 | 1471 result = make_string_method_node(Op_StrIndexOf, source_start, source_cnt, substr_start, substr_cnt); |
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1472 result_phi->init_req(1, result); |
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1473 result_rgn->init_req(1, control()); |
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1474 } |
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1475 set_control(_gvn.transform(result_rgn)); |
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1476 record_for_igvn(result_rgn); |
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1477 result = _gvn.transform(result_phi); |
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1478 |
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1479 } else { // Use LibraryCallKit::string_indexOf |
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1480 // don't intrinsify if argument isn't a constant string. |
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1481 if (!arg->is_Con()) { |
681 | 1482 return false; |
1483 } | |
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1484 const TypeOopPtr* str_type = _gvn.type(arg)->isa_oopptr(); |
681 | 1485 if (str_type == NULL) { |
1486 return false; | |
1487 } | |
1488 ciInstanceKlass* klass = env()->String_klass(); | |
1489 ciObject* str_const = str_type->const_oop(); | |
1490 if (str_const == NULL || str_const->klass() != klass) { | |
1491 return false; | |
1492 } | |
1493 ciInstance* str = str_const->as_instance(); | |
1494 assert(str != NULL, "must be instance"); | |
1495 | |
6057 | 1496 ciObject* v = str->field_value_by_offset(java_lang_String::value_offset_in_bytes()).as_object(); |
681 | 1497 ciTypeArray* pat = v->as_type_array(); // pattern (argument) character array |
1498 | |
6057 | 1499 int o; |
1500 int c; | |
1501 if (java_lang_String::has_offset_field()) { | |
1502 o = str->field_value_by_offset(java_lang_String::offset_offset_in_bytes()).as_int(); | |
1503 c = str->field_value_by_offset(java_lang_String::count_offset_in_bytes()).as_int(); | |
1504 } else { | |
1505 o = 0; | |
1506 c = pat->length(); | |
1507 } | |
1508 | |
681 | 1509 // constant strings have no offset and count == length which |
1510 // simplifies the resulting code somewhat so lets optimize for that. | |
1511 if (o != 0 || c != pat->length()) { | |
1512 return false; | |
1513 } | |
1514 | |
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1515 receiver = null_check(receiver, T_OBJECT); |
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1516 // NOTE: No null check on the argument is needed since it's a constant String oop. |
681 | 1517 if (stopped()) { |
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1518 return true; |
681 | 1519 } |
1520 | |
1521 // The null string as a pattern always returns 0 (match at beginning of string) | |
1522 if (c == 0) { | |
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1523 set_result(intcon(0)); |
681 | 1524 return true; |
1525 } | |
1526 | |
1527 // Generate default indexOf | |
1528 jchar lastChar = pat->char_at(o + (c - 1)); | |
1529 int cache = 0; | |
1530 int i; | |
1531 for (i = 0; i < c - 1; i++) { | |
1532 assert(i < pat->length(), "out of range"); | |
1533 cache |= (1 << (pat->char_at(o + i) & (sizeof(cache) * BitsPerByte - 1))); | |
1534 } | |
1535 | |
1536 int md2 = c; | |
1537 for (i = 0; i < c - 1; i++) { | |
1538 assert(i < pat->length(), "out of range"); | |
1539 if (pat->char_at(o + i) == lastChar) { | |
1540 md2 = (c - 1) - i; | |
1541 } | |
1542 } | |
1543 | |
1544 result = string_indexOf(receiver, pat, o, cache, md2); | |
0 | 1545 } |
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1546 set_result(result); |
0 | 1547 return true; |
1548 } | |
1549 | |
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1550 //--------------------------round_double_node-------------------------------- |
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1551 // Round a double node if necessary. |
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1552 Node* LibraryCallKit::round_double_node(Node* n) { |
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1553 if (Matcher::strict_fp_requires_explicit_rounding && UseSSE <= 1) |
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1554 n = _gvn.transform(new (C) RoundDoubleNode(0, n)); |
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1555 return n; |
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1556 } |
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1557 |
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1558 //------------------------------inline_math----------------------------------- |
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1559 // public static double Math.abs(double) |
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1560 // public static double Math.sqrt(double) |
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1561 // public static double Math.log(double) |
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1562 // public static double Math.log10(double) |
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1563 bool LibraryCallKit::inline_math(vmIntrinsics::ID id) { |
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1564 Node* arg = round_double_node(argument(0)); |
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1565 Node* n; |
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1566 switch (id) { |
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1567 case vmIntrinsics::_dabs: n = new (C) AbsDNode( arg); break; |
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1568 case vmIntrinsics::_dsqrt: n = new (C) SqrtDNode(C, control(), arg); break; |
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1569 case vmIntrinsics::_dlog: n = new (C) LogDNode(C, control(), arg); break; |
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1570 case vmIntrinsics::_dlog10: n = new (C) Log10DNode(C, control(), arg); break; |
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1571 default: fatal_unexpected_iid(id); break; |
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1572 } |
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1573 set_result(_gvn.transform(n)); |
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1574 return true; |
0 | 1575 } |
1576 | |
1577 //------------------------------inline_trig---------------------------------- | |
1578 // Inline sin/cos/tan instructions, if possible. If rounding is required, do | |
1579 // argument reduction which will turn into a fast/slow diamond. | |
1580 bool LibraryCallKit::inline_trig(vmIntrinsics::ID id) { | |
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1581 Node* arg = round_double_node(argument(0)); |
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1582 Node* n = NULL; |
0 | 1583 |
1584 switch (id) { | |
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1585 case vmIntrinsics::_dsin: n = new (C) SinDNode(C, control(), arg); break; |
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1586 case vmIntrinsics::_dcos: n = new (C) CosDNode(C, control(), arg); break; |
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1587 case vmIntrinsics::_dtan: n = new (C) TanDNode(C, control(), arg); break; |
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1588 default: fatal_unexpected_iid(id); break; |
0 | 1589 } |
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1590 n = _gvn.transform(n); |
0 | 1591 |
1592 // Rounding required? Check for argument reduction! | |
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1593 if (Matcher::strict_fp_requires_explicit_rounding) { |
0 | 1594 static const double pi_4 = 0.7853981633974483; |
1595 static const double neg_pi_4 = -0.7853981633974483; | |
1596 // pi/2 in 80-bit extended precision | |
1597 // static const unsigned char pi_2_bits_x[] = {0x35,0xc2,0x68,0x21,0xa2,0xda,0x0f,0xc9,0xff,0x3f,0x00,0x00,0x00,0x00,0x00,0x00}; | |
1598 // -pi/2 in 80-bit extended precision | |
1599 // static const unsigned char neg_pi_2_bits_x[] = {0x35,0xc2,0x68,0x21,0xa2,0xda,0x0f,0xc9,0xff,0xbf,0x00,0x00,0x00,0x00,0x00,0x00}; | |
1600 // Cutoff value for using this argument reduction technique | |
1601 //static const double pi_2_minus_epsilon = 1.564660403643354; | |
1602 //static const double neg_pi_2_plus_epsilon = -1.564660403643354; | |
1603 | |
1604 // Pseudocode for sin: | |
1605 // if (x <= Math.PI / 4.0) { | |
1606 // if (x >= -Math.PI / 4.0) return fsin(x); | |
1607 // if (x >= -Math.PI / 2.0) return -fcos(x + Math.PI / 2.0); | |
1608 // } else { | |
1609 // if (x <= Math.PI / 2.0) return fcos(x - Math.PI / 2.0); | |
1610 // } | |
1611 // return StrictMath.sin(x); | |
1612 | |
1613 // Pseudocode for cos: | |
1614 // if (x <= Math.PI / 4.0) { | |
1615 // if (x >= -Math.PI / 4.0) return fcos(x); | |
1616 // if (x >= -Math.PI / 2.0) return fsin(x + Math.PI / 2.0); | |
1617 // } else { | |
1618 // if (x <= Math.PI / 2.0) return -fsin(x - Math.PI / 2.0); | |
1619 // } | |
1620 // return StrictMath.cos(x); | |
1621 | |
1622 // Actually, sticking in an 80-bit Intel value into C2 will be tough; it | |
1623 // requires a special machine instruction to load it. Instead we'll try | |
1624 // the 'easy' case. If we really need the extra range +/- PI/2 we'll | |
1625 // probably do the math inside the SIN encoding. | |
1626 | |
1627 // Make the merge point | |
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1628 RegionNode* r = new (C) RegionNode(3); |
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1629 Node* phi = new (C) PhiNode(r, Type::DOUBLE); |
0 | 1630 |
1631 // Flatten arg so we need only 1 test | |
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1632 Node *abs = _gvn.transform(new (C) AbsDNode(arg)); |
0 | 1633 // Node for PI/4 constant |
1634 Node *pi4 = makecon(TypeD::make(pi_4)); | |
1635 // Check PI/4 : abs(arg) | |
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1636 Node *cmp = _gvn.transform(new (C) CmpDNode(pi4,abs)); |
0 | 1637 // Check: If PI/4 < abs(arg) then go slow |
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1638 Node *bol = _gvn.transform(new (C) BoolNode( cmp, BoolTest::lt )); |
0 | 1639 // Branch either way |
1640 IfNode *iff = create_and_xform_if(control(),bol, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
1641 set_control(opt_iff(r,iff)); | |
1642 | |
1643 // Set fast path result | |
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1644 phi->init_req(2, n); |
0 | 1645 |
1646 // Slow path - non-blocking leaf call | |
1647 Node* call = NULL; | |
1648 switch (id) { | |
1649 case vmIntrinsics::_dsin: | |
1650 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1651 CAST_FROM_FN_PTR(address, SharedRuntime::dsin), | |
1652 "Sin", NULL, arg, top()); | |
1653 break; | |
1654 case vmIntrinsics::_dcos: | |
1655 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1656 CAST_FROM_FN_PTR(address, SharedRuntime::dcos), | |
1657 "Cos", NULL, arg, top()); | |
1658 break; | |
1659 case vmIntrinsics::_dtan: | |
1660 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1661 CAST_FROM_FN_PTR(address, SharedRuntime::dtan), | |
1662 "Tan", NULL, arg, top()); | |
1663 break; | |
1664 } | |
1665 assert(control()->in(0) == call, ""); | |
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1666 Node* slow_result = _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
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1667 r->init_req(1, control()); |
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1668 phi->init_req(1, slow_result); |
0 | 1669 |
1670 // Post-merge | |
1671 set_control(_gvn.transform(r)); | |
1672 record_for_igvn(r); | |
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1673 n = _gvn.transform(phi); |
0 | 1674 |
1675 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1676 } | |
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1677 set_result(n); |
0 | 1678 return true; |
1679 } | |
1680 | |
6205 | 1681 void LibraryCallKit::finish_pow_exp(Node* result, Node* x, Node* y, const TypeFunc* call_type, address funcAddr, const char* funcName) { |
1682 //------------------- | |
1683 //result=(result.isNaN())? funcAddr():result; | |
1684 // Check: If isNaN() by checking result!=result? then either trap | |
1685 // or go to runtime | |
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1686 Node* cmpisnan = _gvn.transform(new (C) CmpDNode(result, result)); |
6205 | 1687 // Build the boolean node |
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1688 Node* bolisnum = _gvn.transform(new (C) BoolNode(cmpisnan, BoolTest::eq)); |
6205 | 1689 |
1690 if (!too_many_traps(Deoptimization::Reason_intrinsic)) { | |
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1691 { BuildCutout unless(this, bolisnum, PROB_STATIC_FREQUENT); |
6205 | 1692 // The pow or exp intrinsic returned a NaN, which requires a call |
1693 // to the runtime. Recompile with the runtime call. | |
1694 uncommon_trap(Deoptimization::Reason_intrinsic, | |
1695 Deoptimization::Action_make_not_entrant); | |
1696 } | |
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1697 set_result(result); |
6205 | 1698 } else { |
1699 // If this inlining ever returned NaN in the past, we compile a call | |
1700 // to the runtime to properly handle corner cases | |
1701 | |
1702 IfNode* iff = create_and_xform_if(control(), bolisnum, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
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1703 Node* if_slow = _gvn.transform(new (C) IfFalseNode(iff)); |
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1704 Node* if_fast = _gvn.transform(new (C) IfTrueNode(iff)); |
6205 | 1705 |
1706 if (!if_slow->is_top()) { | |
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1707 RegionNode* result_region = new (C) RegionNode(3); |
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1708 PhiNode* result_val = new (C) PhiNode(result_region, Type::DOUBLE); |
6205 | 1709 |
1710 result_region->init_req(1, if_fast); | |
1711 result_val->init_req(1, result); | |
1712 | |
1713 set_control(if_slow); | |
1714 | |
1715 const TypePtr* no_memory_effects = NULL; | |
1716 Node* rt = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, | |
1717 no_memory_effects, | |
1718 x, top(), y, y ? top() : NULL); | |
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1719 Node* value = _gvn.transform(new (C) ProjNode(rt, TypeFunc::Parms+0)); |
6205 | 1720 #ifdef ASSERT |
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1721 Node* value_top = _gvn.transform(new (C) ProjNode(rt, TypeFunc::Parms+1)); |
6205 | 1722 assert(value_top == top(), "second value must be top"); |
1723 #endif | |
1724 | |
1725 result_region->init_req(2, control()); | |
1726 result_val->init_req(2, value); | |
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1727 set_result(result_region, result_val); |
6205 | 1728 } else { |
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1729 set_result(result); |
6205 | 1730 } |
1731 } | |
1732 } | |
1733 | |
0 | 1734 //------------------------------inline_exp------------------------------------- |
1735 // Inline exp instructions, if possible. The Intel hardware only misses | |
1736 // really odd corner cases (+/- Infinity). Just uncommon-trap them. | |
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1737 bool LibraryCallKit::inline_exp() { |
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1738 Node* arg = round_double_node(argument(0)); |
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1739 Node* n = _gvn.transform(new (C) ExpDNode(C, control(), arg)); |
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1740 |
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1741 finish_pow_exp(n, arg, NULL, OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dexp), "EXP"); |
0 | 1742 |
1743 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1744 return true; | |
1745 } | |
1746 | |
1747 //------------------------------inline_pow------------------------------------- | |
1748 // Inline power instructions, if possible. | |
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1749 bool LibraryCallKit::inline_pow() { |
0 | 1750 // Pseudocode for pow |
1751 // if (x <= 0.0) { | |
6205 | 1752 // long longy = (long)y; |
1753 // if ((double)longy == y) { // if y is long | |
1754 // if (y + 1 == y) longy = 0; // huge number: even | |
1755 // result = ((1&longy) == 0)?-DPow(abs(x), y):DPow(abs(x), y); | |
0 | 1756 // } else { |
1757 // result = NaN; | |
1758 // } | |
1759 // } else { | |
1760 // result = DPow(x,y); | |
1761 // } | |
1762 // if (result != result)? { | |
6205 | 1763 // result = uncommon_trap() or runtime_call(); |
0 | 1764 // } |
1765 // return result; | |
1766 | |
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1767 Node* x = round_double_node(argument(0)); |
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1768 Node* y = round_double_node(argument(2)); |
0 | 1769 |
6205 | 1770 Node* result = NULL; |
1771 | |
1772 if (!too_many_traps(Deoptimization::Reason_intrinsic)) { | |
1773 // Short form: skip the fancy tests and just check for NaN result. | |
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1774 result = _gvn.transform(new (C) PowDNode(C, control(), x, y)); |
0 | 1775 } else { |
6205 | 1776 // If this inlining ever returned NaN in the past, include all |
1777 // checks + call to the runtime. | |
0 | 1778 |
1779 // Set the merge point for If node with condition of (x <= 0.0) | |
1780 // There are four possible paths to region node and phi node | |
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1781 RegionNode *r = new (C) RegionNode(4); |
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1782 Node *phi = new (C) PhiNode(r, Type::DOUBLE); |
0 | 1783 |
1784 // Build the first if node: if (x <= 0.0) | |
1785 // Node for 0 constant | |
1786 Node *zeronode = makecon(TypeD::ZERO); | |
1787 // Check x:0 | |
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1788 Node *cmp = _gvn.transform(new (C) CmpDNode(x, zeronode)); |
0 | 1789 // Check: If (x<=0) then go complex path |
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1790 Node *bol1 = _gvn.transform(new (C) BoolNode( cmp, BoolTest::le )); |
0 | 1791 // Branch either way |
1792 IfNode *if1 = create_and_xform_if(control(),bol1, PROB_STATIC_INFREQUENT, COUNT_UNKNOWN); | |
1793 // Fast path taken; set region slot 3 | |
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1794 Node *fast_taken = _gvn.transform(new (C) IfFalseNode(if1)); |
0 | 1795 r->init_req(3,fast_taken); // Capture fast-control |
1796 | |
1797 // Fast path not-taken, i.e. slow path | |
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1798 Node *complex_path = _gvn.transform(new (C) IfTrueNode(if1)); |
0 | 1799 |
1800 // Set fast path result | |
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1801 Node *fast_result = _gvn.transform(new (C) PowDNode(C, control(), x, y)); |
0 | 1802 phi->init_req(3, fast_result); |
1803 | |
1804 // Complex path | |
6205 | 1805 // Build the second if node (if y is long) |
1806 // Node for (long)y | |
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1807 Node *longy = _gvn.transform(new (C) ConvD2LNode(y)); |
6205 | 1808 // Node for (double)((long) y) |
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1809 Node *doublelongy= _gvn.transform(new (C) ConvL2DNode(longy)); |
6205 | 1810 // Check (double)((long) y) : y |
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1811 Node *cmplongy= _gvn.transform(new (C) CmpDNode(doublelongy, y)); |
6205 | 1812 // Check if (y isn't long) then go to slow path |
1813 | |
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1814 Node *bol2 = _gvn.transform(new (C) BoolNode( cmplongy, BoolTest::ne )); |
605 | 1815 // Branch either way |
0 | 1816 IfNode *if2 = create_and_xform_if(complex_path,bol2, PROB_STATIC_INFREQUENT, COUNT_UNKNOWN); |
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1817 Node* ylong_path = _gvn.transform(new (C) IfFalseNode(if2)); |
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1818 |
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1819 Node *slow_path = _gvn.transform(new (C) IfTrueNode(if2)); |
6205 | 1820 |
1821 // Calculate DPow(abs(x), y)*(1 & (long)y) | |
0 | 1822 // Node for constant 1 |
6205 | 1823 Node *conone = longcon(1); |
1824 // 1& (long)y | |
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1825 Node *signnode= _gvn.transform(new (C) AndLNode(conone, longy)); |
6205 | 1826 |
1827 // A huge number is always even. Detect a huge number by checking | |
1828 // if y + 1 == y and set integer to be tested for parity to 0. | |
1829 // Required for corner case: | |
1830 // (long)9.223372036854776E18 = max_jlong | |
1831 // (double)(long)9.223372036854776E18 = 9.223372036854776E18 | |
1832 // max_jlong is odd but 9.223372036854776E18 is even | |
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1833 Node* yplus1 = _gvn.transform(new (C) AddDNode(y, makecon(TypeD::make(1)))); |
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1834 Node *cmpyplus1= _gvn.transform(new (C) CmpDNode(yplus1, y)); |
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1835 Node *bolyplus1 = _gvn.transform(new (C) BoolNode( cmpyplus1, BoolTest::eq )); |
6205 | 1836 Node* correctedsign = NULL; |
1837 if (ConditionalMoveLimit != 0) { | |
1838 correctedsign = _gvn.transform( CMoveNode::make(C, NULL, bolyplus1, signnode, longcon(0), TypeLong::LONG)); | |
1839 } else { | |
1840 IfNode *ifyplus1 = create_and_xform_if(ylong_path,bolyplus1, PROB_FAIR, COUNT_UNKNOWN); | |
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1841 RegionNode *r = new (C) RegionNode(3); |
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1842 Node *phi = new (C) PhiNode(r, TypeLong::LONG); |
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1843 r->init_req(1, _gvn.transform(new (C) IfFalseNode(ifyplus1))); |
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1844 r->init_req(2, _gvn.transform(new (C) IfTrueNode(ifyplus1))); |
6205 | 1845 phi->init_req(1, signnode); |
1846 phi->init_req(2, longcon(0)); | |
1847 correctedsign = _gvn.transform(phi); | |
1848 ylong_path = _gvn.transform(r); | |
1849 record_for_igvn(r); | |
1850 } | |
1851 | |
0 | 1852 // zero node |
6205 | 1853 Node *conzero = longcon(0); |
1854 // Check (1&(long)y)==0? | |
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1855 Node *cmpeq1 = _gvn.transform(new (C) CmpLNode(correctedsign, conzero)); |
6205 | 1856 // Check if (1&(long)y)!=0?, if so the result is negative |
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1857 Node *bol3 = _gvn.transform(new (C) BoolNode( cmpeq1, BoolTest::ne )); |
0 | 1858 // abs(x) |
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1859 Node *absx=_gvn.transform(new (C) AbsDNode(x)); |
0 | 1860 // abs(x)^y |
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1861 Node *absxpowy = _gvn.transform(new (C) PowDNode(C, control(), absx, y)); |
0 | 1862 // -abs(x)^y |
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1863 Node *negabsxpowy = _gvn.transform(new (C) NegDNode (absxpowy)); |
6205 | 1864 // (1&(long)y)==1?-DPow(abs(x), y):DPow(abs(x), y) |
1865 Node *signresult = NULL; | |
1866 if (ConditionalMoveLimit != 0) { | |
1867 signresult = _gvn.transform( CMoveNode::make(C, NULL, bol3, absxpowy, negabsxpowy, Type::DOUBLE)); | |
1868 } else { | |
1869 IfNode *ifyeven = create_and_xform_if(ylong_path,bol3, PROB_FAIR, COUNT_UNKNOWN); | |
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1870 RegionNode *r = new (C) RegionNode(3); |
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1871 Node *phi = new (C) PhiNode(r, Type::DOUBLE); |
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1872 r->init_req(1, _gvn.transform(new (C) IfFalseNode(ifyeven))); |
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1873 r->init_req(2, _gvn.transform(new (C) IfTrueNode(ifyeven))); |
6205 | 1874 phi->init_req(1, absxpowy); |
1875 phi->init_req(2, negabsxpowy); | |
1876 signresult = _gvn.transform(phi); | |
1877 ylong_path = _gvn.transform(r); | |
1878 record_for_igvn(r); | |
1879 } | |
0 | 1880 // Set complex path fast result |
6205 | 1881 r->init_req(2, ylong_path); |
0 | 1882 phi->init_req(2, signresult); |
1883 | |
1884 static const jlong nan_bits = CONST64(0x7ff8000000000000); | |
1885 Node *slow_result = makecon(TypeD::make(*(double*)&nan_bits)); // return NaN | |
1886 r->init_req(1,slow_path); | |
1887 phi->init_req(1,slow_result); | |
1888 | |
1889 // Post merge | |
1890 set_control(_gvn.transform(r)); | |
1891 record_for_igvn(r); | |
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1892 result = _gvn.transform(phi); |
0 | 1893 } |
1894 | |
6205 | 1895 finish_pow_exp(result, x, y, OptoRuntime::Math_DD_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dpow), "POW"); |
0 | 1896 |
1897 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1898 return true; | |
1899 } | |
1900 | |
1901 //------------------------------runtime_math----------------------------- | |
1902 bool LibraryCallKit::runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName) { | |
1903 assert(call_type == OptoRuntime::Math_DD_D_Type() || call_type == OptoRuntime::Math_D_D_Type(), | |
1904 "must be (DD)D or (D)D type"); | |
1905 | |
1906 // Inputs | |
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1907 Node* a = round_double_node(argument(0)); |
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1908 Node* b = (call_type == OptoRuntime::Math_DD_D_Type()) ? round_double_node(argument(2)) : NULL; |
0 | 1909 |
1910 const TypePtr* no_memory_effects = NULL; | |
1911 Node* trig = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, | |
1912 no_memory_effects, | |
1913 a, top(), b, b ? top() : NULL); | |
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1914 Node* value = _gvn.transform(new (C) ProjNode(trig, TypeFunc::Parms+0)); |
0 | 1915 #ifdef ASSERT |
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1916 Node* value_top = _gvn.transform(new (C) ProjNode(trig, TypeFunc::Parms+1)); |
0 | 1917 assert(value_top == top(), "second value must be top"); |
1918 #endif | |
1919 | |
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1920 set_result(value); |
0 | 1921 return true; |
1922 } | |
1923 | |
1924 //------------------------------inline_math_native----------------------------- | |
1925 bool LibraryCallKit::inline_math_native(vmIntrinsics::ID id) { | |
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1926 #define FN_PTR(f) CAST_FROM_FN_PTR(address, f) |
0 | 1927 switch (id) { |
1928 // These intrinsics are not properly supported on all hardware | |
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1929 case vmIntrinsics::_dcos: return Matcher::has_match_rule(Op_CosD) ? inline_trig(id) : |
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1930 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dcos), "COS"); |
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1931 case vmIntrinsics::_dsin: return Matcher::has_match_rule(Op_SinD) ? inline_trig(id) : |
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1932 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dsin), "SIN"); |
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1933 case vmIntrinsics::_dtan: return Matcher::has_match_rule(Op_TanD) ? inline_trig(id) : |
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1934 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dtan), "TAN"); |
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1935 |
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1936 case vmIntrinsics::_dlog: return Matcher::has_match_rule(Op_LogD) ? inline_math(id) : |
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1937 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dlog), "LOG"); |
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1938 case vmIntrinsics::_dlog10: return Matcher::has_match_rule(Op_Log10D) ? inline_math(id) : |
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1939 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dlog10), "LOG10"); |
0 | 1940 |
1941 // These intrinsics are supported on all hardware | |
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1942 case vmIntrinsics::_dsqrt: return Matcher::has_match_rule(Op_SqrtD) ? inline_math(id) : false; |
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1943 case vmIntrinsics::_dabs: return Matcher::has_match_rule(Op_AbsD) ? inline_math(id) : false; |
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1944 |
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1945 case vmIntrinsics::_dexp: return Matcher::has_match_rule(Op_ExpD) ? inline_exp() : |
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1946 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dexp), "EXP"); |
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1947 case vmIntrinsics::_dpow: return Matcher::has_match_rule(Op_PowD) ? inline_pow() : |
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1948 runtime_math(OptoRuntime::Math_DD_D_Type(), FN_PTR(SharedRuntime::dpow), "POW"); |
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1949 #undef FN_PTR |
0 | 1950 |
1951 // These intrinsics are not yet correctly implemented | |
1952 case vmIntrinsics::_datan2: | |
1953 return false; | |
1954 | |
1955 default: | |
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1956 fatal_unexpected_iid(id); |
0 | 1957 return false; |
1958 } | |
1959 } | |
1960 | |
1961 static bool is_simple_name(Node* n) { | |
1962 return (n->req() == 1 // constant | |
1963 || (n->is_Type() && n->as_Type()->type()->singleton()) | |
1964 || n->is_Proj() // parameter or return value | |
1965 || n->is_Phi() // local of some sort | |
1966 ); | |
1967 } | |
1968 | |
1969 //----------------------------inline_min_max----------------------------------- | |
1970 bool LibraryCallKit::inline_min_max(vmIntrinsics::ID id) { | |
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1971 set_result(generate_min_max(id, argument(0), argument(1))); |
0 | 1972 return true; |
1973 } | |
1974 | |
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1975 void LibraryCallKit::inline_math_mathExact(Node* math, Node *test) { |
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1976 Node* bol = _gvn.transform( new (C) BoolNode(test, BoolTest::overflow) ); |
12323 | 1977 IfNode* check = create_and_map_if(control(), bol, PROB_UNLIKELY_MAG(3), COUNT_UNKNOWN); |
1978 Node* fast_path = _gvn.transform( new (C) IfFalseNode(check)); | |
1979 Node* slow_path = _gvn.transform( new (C) IfTrueNode(check) ); | |
1980 | |
1981 { | |
1982 PreserveJVMState pjvms(this); | |
1983 PreserveReexecuteState preexecs(this); | |
1984 jvms()->set_should_reexecute(true); | |
1985 | |
1986 set_control(slow_path); | |
1987 set_i_o(i_o()); | |
1988 | |
1989 uncommon_trap(Deoptimization::Reason_intrinsic, | |
1990 Deoptimization::Action_none); | |
1991 } | |
1992 | |
1993 set_control(fast_path); | |
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1994 set_result(math); |
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1995 } |
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1996 |
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1997 template <typename OverflowOp> |
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1998 bool LibraryCallKit::inline_math_overflow(Node* arg1, Node* arg2) { |
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1999 typedef typename OverflowOp::MathOp MathOp; |
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2000 |
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2001 MathOp* mathOp = new(C) MathOp(arg1, arg2); |
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2002 Node* operation = _gvn.transform( mathOp ); |
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2003 Node* ofcheck = _gvn.transform( new(C) OverflowOp(arg1, arg2) ); |
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2004 inline_math_mathExact(operation, ofcheck); |
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2005 return true; |
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2006 } |
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2007 |
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2008 bool LibraryCallKit::inline_math_addExactI(bool is_increment) { |
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2009 return inline_math_overflow<OverflowAddINode>(argument(0), is_increment ? intcon(1) : argument(1)); |
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2010 } |
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2011 |
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2012 bool LibraryCallKit::inline_math_addExactL(bool is_increment) { |
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2013 return inline_math_overflow<OverflowAddLNode>(argument(0), is_increment ? longcon(1) : argument(2)); |
12323 | 2014 } |
2015 | |
12972
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2016 bool LibraryCallKit::inline_math_subtractExactI(bool is_decrement) { |
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2017 return inline_math_overflow<OverflowSubINode>(argument(0), is_decrement ? intcon(1) : argument(1)); |
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2018 } |
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2019 |
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2020 bool LibraryCallKit::inline_math_subtractExactL(bool is_decrement) { |
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2021 return inline_math_overflow<OverflowSubLNode>(argument(0), is_decrement ? longcon(1) : argument(2)); |
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2022 } |
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2023 |
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2024 bool LibraryCallKit::inline_math_negateExactI() { |
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2025 return inline_math_overflow<OverflowSubINode>(intcon(0), argument(0)); |
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2026 } |
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2027 |
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2028 bool LibraryCallKit::inline_math_negateExactL() { |
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2029 return inline_math_overflow<OverflowSubLNode>(longcon(0), argument(0)); |
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2030 } |
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2031 |
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2032 bool LibraryCallKit::inline_math_multiplyExactI() { |
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2033 return inline_math_overflow<OverflowMulINode>(argument(0), argument(1)); |
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2034 } |
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2035 |
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2036 bool LibraryCallKit::inline_math_multiplyExactL() { |
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2037 return inline_math_overflow<OverflowMulLNode>(argument(0), argument(2)); |
12323 | 2038 } |
2039 | |
0 | 2040 Node* |
2041 LibraryCallKit::generate_min_max(vmIntrinsics::ID id, Node* x0, Node* y0) { | |
2042 // These are the candidate return value: | |
2043 Node* xvalue = x0; | |
2044 Node* yvalue = y0; | |
2045 | |
2046 if (xvalue == yvalue) { | |
2047 return xvalue; | |
2048 } | |
2049 | |
2050 bool want_max = (id == vmIntrinsics::_max); | |
2051 | |
2052 const TypeInt* txvalue = _gvn.type(xvalue)->isa_int(); | |
2053 const TypeInt* tyvalue = _gvn.type(yvalue)->isa_int(); | |
2054 if (txvalue == NULL || tyvalue == NULL) return top(); | |
2055 // This is not really necessary, but it is consistent with a | |
2056 // hypothetical MaxINode::Value method: | |
2057 int widen = MAX2(txvalue->_widen, tyvalue->_widen); | |
2058 | |
2059 // %%% This folding logic should (ideally) be in a different place. | |
2060 // Some should be inside IfNode, and there to be a more reliable | |
2061 // transformation of ?: style patterns into cmoves. We also want | |
2062 // more powerful optimizations around cmove and min/max. | |
2063 | |
2064 // Try to find a dominating comparison of these guys. | |
2065 // It can simplify the index computation for Arrays.copyOf | |
2066 // and similar uses of System.arraycopy. | |
2067 // First, compute the normalized version of CmpI(x, y). | |
2068 int cmp_op = Op_CmpI; | |
2069 Node* xkey = xvalue; | |
2070 Node* ykey = yvalue; | |
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2071 Node* ideal_cmpxy = _gvn.transform(new(C) CmpINode(xkey, ykey)); |
0 | 2072 if (ideal_cmpxy->is_Cmp()) { |
2073 // E.g., if we have CmpI(length - offset, count), | |
2074 // it might idealize to CmpI(length, count + offset) | |
2075 cmp_op = ideal_cmpxy->Opcode(); | |
2076 xkey = ideal_cmpxy->in(1); | |
2077 ykey = ideal_cmpxy->in(2); | |
2078 } | |
2079 | |
2080 // Start by locating any relevant comparisons. | |
2081 Node* start_from = (xkey->outcnt() < ykey->outcnt()) ? xkey : ykey; | |
2082 Node* cmpxy = NULL; | |
2083 Node* cmpyx = NULL; | |
2084 for (DUIterator_Fast kmax, k = start_from->fast_outs(kmax); k < kmax; k++) { | |
2085 Node* cmp = start_from->fast_out(k); | |
2086 if (cmp->outcnt() > 0 && // must have prior uses | |
2087 cmp->in(0) == NULL && // must be context-independent | |
2088 cmp->Opcode() == cmp_op) { // right kind of compare | |
2089 if (cmp->in(1) == xkey && cmp->in(2) == ykey) cmpxy = cmp; | |
2090 if (cmp->in(1) == ykey && cmp->in(2) == xkey) cmpyx = cmp; | |
2091 } | |
2092 } | |
2093 | |
2094 const int NCMPS = 2; | |
2095 Node* cmps[NCMPS] = { cmpxy, cmpyx }; | |
2096 int cmpn; | |
2097 for (cmpn = 0; cmpn < NCMPS; cmpn++) { | |
2098 if (cmps[cmpn] != NULL) break; // find a result | |
2099 } | |
2100 if (cmpn < NCMPS) { | |
2101 // Look for a dominating test that tells us the min and max. | |
2102 int depth = 0; // Limit search depth for speed | |
2103 Node* dom = control(); | |
2104 for (; dom != NULL; dom = IfNode::up_one_dom(dom, true)) { | |
2105 if (++depth >= 100) break; | |
2106 Node* ifproj = dom; | |
2107 if (!ifproj->is_Proj()) continue; | |
2108 Node* iff = ifproj->in(0); | |
2109 if (!iff->is_If()) continue; | |
2110 Node* bol = iff->in(1); | |
2111 if (!bol->is_Bool()) continue; | |
2112 Node* cmp = bol->in(1); | |
2113 if (cmp == NULL) continue; | |
2114 for (cmpn = 0; cmpn < NCMPS; cmpn++) | |
2115 if (cmps[cmpn] == cmp) break; | |
2116 if (cmpn == NCMPS) continue; | |
2117 BoolTest::mask btest = bol->as_Bool()->_test._test; | |
2118 if (ifproj->is_IfFalse()) btest = BoolTest(btest).negate(); | |
2119 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); | |
2120 // At this point, we know that 'x btest y' is true. | |
2121 switch (btest) { | |
2122 case BoolTest::eq: | |
2123 // They are proven equal, so we can collapse the min/max. | |
2124 // Either value is the answer. Choose the simpler. | |
2125 if (is_simple_name(yvalue) && !is_simple_name(xvalue)) | |
2126 return yvalue; | |
2127 return xvalue; | |
2128 case BoolTest::lt: // x < y | |
2129 case BoolTest::le: // x <= y | |
2130 return (want_max ? yvalue : xvalue); | |
2131 case BoolTest::gt: // x > y | |
2132 case BoolTest::ge: // x >= y | |
2133 return (want_max ? xvalue : yvalue); | |
2134 } | |
2135 } | |
2136 } | |
2137 | |
2138 // We failed to find a dominating test. | |
2139 // Let's pick a test that might GVN with prior tests. | |
2140 Node* best_bol = NULL; | |
2141 BoolTest::mask best_btest = BoolTest::illegal; | |
2142 for (cmpn = 0; cmpn < NCMPS; cmpn++) { | |
2143 Node* cmp = cmps[cmpn]; | |
2144 if (cmp == NULL) continue; | |
2145 for (DUIterator_Fast jmax, j = cmp->fast_outs(jmax); j < jmax; j++) { | |
2146 Node* bol = cmp->fast_out(j); | |
2147 if (!bol->is_Bool()) continue; | |
2148 BoolTest::mask btest = bol->as_Bool()->_test._test; | |
2149 if (btest == BoolTest::eq || btest == BoolTest::ne) continue; | |
2150 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); | |
2151 if (bol->outcnt() > (best_bol == NULL ? 0 : best_bol->outcnt())) { | |
2152 best_bol = bol->as_Bool(); | |
2153 best_btest = btest; | |
2154 } | |
2155 } | |
2156 } | |
2157 | |
2158 Node* answer_if_true = NULL; | |
2159 Node* answer_if_false = NULL; | |
2160 switch (best_btest) { | |
2161 default: | |
2162 if (cmpxy == NULL) | |
2163 cmpxy = ideal_cmpxy; | |
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2164 best_bol = _gvn.transform(new(C) BoolNode(cmpxy, BoolTest::lt)); |
0 | 2165 // and fall through: |
2166 case BoolTest::lt: // x < y | |
2167 case BoolTest::le: // x <= y | |
2168 answer_if_true = (want_max ? yvalue : xvalue); | |
2169 answer_if_false = (want_max ? xvalue : yvalue); | |
2170 break; | |
2171 case BoolTest::gt: // x > y | |
2172 case BoolTest::ge: // x >= y | |
2173 answer_if_true = (want_max ? xvalue : yvalue); | |
2174 answer_if_false = (want_max ? yvalue : xvalue); | |
2175 break; | |
2176 } | |
2177 | |
2178 jint hi, lo; | |
2179 if (want_max) { | |
2180 // We can sharpen the minimum. | |
2181 hi = MAX2(txvalue->_hi, tyvalue->_hi); | |
2182 lo = MAX2(txvalue->_lo, tyvalue->_lo); | |
2183 } else { | |
2184 // We can sharpen the maximum. | |
2185 hi = MIN2(txvalue->_hi, tyvalue->_hi); | |
2186 lo = MIN2(txvalue->_lo, tyvalue->_lo); | |
2187 } | |
2188 | |
2189 // Use a flow-free graph structure, to avoid creating excess control edges | |
2190 // which could hinder other optimizations. | |
2191 // Since Math.min/max is often used with arraycopy, we want | |
2192 // tightly_coupled_allocation to be able to see beyond min/max expressions. | |
2193 Node* cmov = CMoveNode::make(C, NULL, best_bol, | |
2194 answer_if_false, answer_if_true, | |
2195 TypeInt::make(lo, hi, widen)); | |
2196 | |
2197 return _gvn.transform(cmov); | |
2198 | |
2199 /* | |
2200 // This is not as desirable as it may seem, since Min and Max | |
2201 // nodes do not have a full set of optimizations. | |
2202 // And they would interfere, anyway, with 'if' optimizations | |
2203 // and with CMoveI canonical forms. | |
2204 switch (id) { | |
2205 case vmIntrinsics::_min: | |
2206 result_val = _gvn.transform(new (C, 3) MinINode(x,y)); break; | |
2207 case vmIntrinsics::_max: | |
2208 result_val = _gvn.transform(new (C, 3) MaxINode(x,y)); break; | |
2209 default: | |
2210 ShouldNotReachHere(); | |
2211 } | |
2212 */ | |
2213 } | |
2214 | |
2215 inline int | |
2216 LibraryCallKit::classify_unsafe_addr(Node* &base, Node* &offset) { | |
2217 const TypePtr* base_type = TypePtr::NULL_PTR; | |
2218 if (base != NULL) base_type = _gvn.type(base)->isa_ptr(); | |
2219 if (base_type == NULL) { | |
2220 // Unknown type. | |
2221 return Type::AnyPtr; | |
2222 } else if (base_type == TypePtr::NULL_PTR) { | |
2223 // Since this is a NULL+long form, we have to switch to a rawptr. | |
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2224 base = _gvn.transform(new (C) CastX2PNode(offset)); |
0 | 2225 offset = MakeConX(0); |
2226 return Type::RawPtr; | |
2227 } else if (base_type->base() == Type::RawPtr) { | |
2228 return Type::RawPtr; | |
2229 } else if (base_type->isa_oopptr()) { | |
2230 // Base is never null => always a heap address. | |
2231 if (base_type->ptr() == TypePtr::NotNull) { | |
2232 return Type::OopPtr; | |
2233 } | |
2234 // Offset is small => always a heap address. | |
2235 const TypeX* offset_type = _gvn.type(offset)->isa_intptr_t(); | |
2236 if (offset_type != NULL && | |
2237 base_type->offset() == 0 && // (should always be?) | |
2238 offset_type->_lo >= 0 && | |
2239 !MacroAssembler::needs_explicit_null_check(offset_type->_hi)) { | |
2240 return Type::OopPtr; | |
2241 } | |
2242 // Otherwise, it might either be oop+off or NULL+addr. | |
2243 return Type::AnyPtr; | |
2244 } else { | |
2245 // No information: | |
2246 return Type::AnyPtr; | |
2247 } | |
2248 } | |
2249 | |
2250 inline Node* LibraryCallKit::make_unsafe_address(Node* base, Node* offset) { | |
2251 int kind = classify_unsafe_addr(base, offset); | |
2252 if (kind == Type::RawPtr) { | |
2253 return basic_plus_adr(top(), base, offset); | |
2254 } else { | |
2255 return basic_plus_adr(base, offset); | |
2256 } | |
2257 } | |
2258 | |
7194
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2259 //--------------------------inline_number_methods----------------------------- |
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2260 // inline int Integer.numberOfLeadingZeros(int) |
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2261 // inline int Long.numberOfLeadingZeros(long) |
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2262 // |
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2263 // inline int Integer.numberOfTrailingZeros(int) |
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2264 // inline int Long.numberOfTrailingZeros(long) |
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2265 // |
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2266 // inline int Integer.bitCount(int) |
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2267 // inline int Long.bitCount(long) |
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2268 // |
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2269 // inline char Character.reverseBytes(char) |
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2270 // inline short Short.reverseBytes(short) |
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2271 // inline int Integer.reverseBytes(int) |
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2272 // inline long Long.reverseBytes(long) |
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2273 bool LibraryCallKit::inline_number_methods(vmIntrinsics::ID id) { |
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2274 Node* arg = argument(0); |
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2275 Node* n; |
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2276 switch (id) { |
7194
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2277 case vmIntrinsics::_numberOfLeadingZeros_i: n = new (C) CountLeadingZerosINode( arg); break; |
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2278 case vmIntrinsics::_numberOfLeadingZeros_l: n = new (C) CountLeadingZerosLNode( arg); break; |
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2279 case vmIntrinsics::_numberOfTrailingZeros_i: n = new (C) CountTrailingZerosINode(arg); break; |
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2280 case vmIntrinsics::_numberOfTrailingZeros_l: n = new (C) CountTrailingZerosLNode(arg); break; |
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2281 case vmIntrinsics::_bitCount_i: n = new (C) PopCountINode( arg); break; |
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2282 case vmIntrinsics::_bitCount_l: n = new (C) PopCountLNode( arg); break; |
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2283 case vmIntrinsics::_reverseBytes_c: n = new (C) ReverseBytesUSNode(0, arg); break; |
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2284 case vmIntrinsics::_reverseBytes_s: n = new (C) ReverseBytesSNode( 0, arg); break; |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
2285 case vmIntrinsics::_reverseBytes_i: n = new (C) ReverseBytesINode( 0, arg); break; |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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6894
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|
2286 case vmIntrinsics::_reverseBytes_l: n = new (C) ReverseBytesLNode( 0, arg); break; |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
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|
2287 default: fatal_unexpected_iid(id); break; |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
730
diff
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|
2288 } |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
2289 set_result(_gvn.transform(n)); |
0 | 2290 return true; |
2291 } | |
2292 | |
2293 //----------------------------inline_unsafe_access---------------------------- | |
2294 | |
2295 const static BasicType T_ADDRESS_HOLDER = T_LONG; | |
2296 | |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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|
2297 // Helper that guards and inserts a pre-barrier. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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|
2298 void LibraryCallKit::insert_pre_barrier(Node* base_oop, Node* offset, |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
2299 Node* pre_val, bool need_mem_bar) { |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
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|
2300 // We could be accessing the referent field of a reference object. If so, when G1 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
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|
2301 // is enabled, we need to log the value in the referent field in an SATB buffer. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2302 // This routine performs some compile time filters and generates suitable |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
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|
2303 // runtime filters that guard the pre-barrier code. |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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|
2304 // Also add memory barrier for non volatile load from the referent field |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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|
2305 // to prevent commoning of loads across safepoint. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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|
2306 if (!UseG1GC && !need_mem_bar) |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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|
2307 return; |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2308 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2309 // Some compile time checks. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
2310 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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|
2311 // If offset is a constant, is it java_lang_ref_Reference::_reference_offset? |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
changeset
|
2312 const TypeX* otype = offset->find_intptr_t_type(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2313 if (otype != NULL && otype->is_con() && |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2314 otype->get_con() != java_lang_ref_Reference::referent_offset) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2315 // Constant offset but not the reference_offset so just return |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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|
2316 return; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
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|
2317 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
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|
2318 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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2385
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|
2319 // We only need to generate the runtime guards for instances. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2320 const TypeOopPtr* btype = base_oop->bottom_type()->isa_oopptr(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
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|
2321 if (btype != NULL) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2322 if (btype->isa_aryptr()) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2323 // Array type so nothing to do |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2324 return; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2325 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2326 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2327 const TypeInstPtr* itype = btype->isa_instptr(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2328 if (itype != NULL) { |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
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|
2329 // Can the klass of base_oop be statically determined to be |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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6266
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|
2330 // _not_ a sub-class of Reference and _not_ Object? |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2331 ciKlass* klass = itype->klass(); |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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6266
diff
changeset
|
2332 if ( klass->is_loaded() && |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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6266
diff
changeset
|
2333 !klass->is_subtype_of(env()->Reference_klass()) && |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2334 !env()->Object_klass()->is_subtype_of(klass)) { |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2335 return; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2336 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2337 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2338 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2339 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2340 // The compile time filters did not reject base_oop/offset so |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2341 // we need to generate the following runtime filters |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2342 // |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2343 // if (offset == java_lang_ref_Reference::_reference_offset) { |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
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|
2344 // if (instance_of(base, java.lang.ref.Reference)) { |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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6266
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changeset
|
2345 // pre_barrier(_, pre_val, ...); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2346 // } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2347 // } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2348 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2349 float likely = PROB_LIKELY( 0.999); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
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diff
changeset
|
2350 float unlikely = PROB_UNLIKELY(0.999); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2351 |
3255 | 2352 IdealKit ideal(this); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2353 #define __ ideal. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2354 |
3254
59766fd005ff
7035117: G1: nsk/stress/jni/jnistress002 fails with assertion failure
johnc
parents:
3252
diff
changeset
|
2355 Node* referent_off = __ ConX(java_lang_ref_Reference::referent_offset); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2356 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2357 __ if_then(offset, BoolTest::eq, referent_off, unlikely); { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2358 // Update graphKit memory and control from IdealKit. |
3255 | 2359 sync_kit(ideal); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2360 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2361 Node* ref_klass_con = makecon(TypeKlassPtr::make(env()->Reference_klass())); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2362 Node* is_instof = gen_instanceof(base_oop, ref_klass_con); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2363 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2364 // Update IdealKit memory and control from graphKit. |
3255 | 2365 __ sync_kit(this); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2366 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2367 Node* one = __ ConI(1); |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2368 // is_instof == 0 if base_oop == NULL |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2369 __ if_then(is_instof, BoolTest::eq, one, unlikely); { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2370 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2371 // Update graphKit from IdeakKit. |
3255 | 2372 sync_kit(ideal); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2373 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2374 // Use the pre-barrier to record the value in the referent field |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2375 pre_barrier(false /* do_load */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2376 __ ctrl(), |
3258
edd9b016deb6
7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment
johnc
parents:
3255
diff
changeset
|
2377 NULL /* obj */, NULL /* adr */, max_juint /* alias_idx */, NULL /* val */, NULL /* val_type */, |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2378 pre_val /* pre_val */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2379 T_OBJECT); |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2380 if (need_mem_bar) { |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2381 // Add memory barrier to prevent commoning reads from this field |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2382 // across safepoint since GC can change its value. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2383 insert_mem_bar(Op_MemBarCPUOrder); |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2384 } |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2385 // Update IdealKit from graphKit. |
3255 | 2386 __ sync_kit(this); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2387 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2388 } __ end_if(); // _ref_type != ref_none |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2389 } __ end_if(); // offset == referent_offset |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2390 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2391 // Final sync IdealKit and GraphKit. |
3255 | 2392 final_sync(ideal); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2393 #undef __ |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2394 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2395 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2396 |
0 | 2397 // Interpret Unsafe.fieldOffset cookies correctly: |
2398 extern jlong Unsafe_field_offset_to_byte_offset(jlong field_offset); | |
2399 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2400 const TypeOopPtr* LibraryCallKit::sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type, bool is_native_ptr) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2401 // Attempt to infer a sharper value type from the offset and base type. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2402 ciKlass* sharpened_klass = NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2403 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2404 // See if it is an instance field, with an object type. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2405 if (alias_type->field() != NULL) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2406 assert(!is_native_ptr, "native pointer op cannot use a java address"); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2407 if (alias_type->field()->type()->is_klass()) { |
7eca5de9e0b6
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2408 sharpened_klass = alias_type->field()->type()->as_klass(); |
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2409 } |
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|
2410 } |
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|
2411 |
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2412 // See if it is a narrow oop array. |
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2413 if (adr_type->isa_aryptr()) { |
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2414 if (adr_type->offset() >= objArrayOopDesc::base_offset_in_bytes()) { |
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2415 const TypeOopPtr *elem_type = adr_type->is_aryptr()->elem()->isa_oopptr(); |
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2416 if (elem_type != NULL) { |
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2417 sharpened_klass = elem_type->klass(); |
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2418 } |
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|
2419 } |
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|
2420 } |
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|
2421 |
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2422 // The sharpened class might be unloaded if there is no class loader |
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2423 // contraint in place. |
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2424 if (sharpened_klass != NULL && sharpened_klass->is_loaded()) { |
6795
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2425 const TypeOopPtr* tjp = TypeOopPtr::make_from_klass(sharpened_klass); |
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2426 |
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|
2427 #ifndef PRODUCT |
12295 | 2428 if (C->print_intrinsics() || C->print_inlining()) { |
6847
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2429 tty->print(" from base type: "); adr_type->dump(); |
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2430 tty->print(" sharpened value: "); tjp->dump(); |
6795
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2431 } |
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2432 #endif |
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2433 // Sharpen the value type. |
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2434 return tjp; |
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|
2435 } |
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2436 return NULL; |
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|
2437 } |
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2438 |
0 | 2439 bool LibraryCallKit::inline_unsafe_access(bool is_native_ptr, bool is_store, BasicType type, bool is_volatile) { |
2440 if (callee()->is_static()) return false; // caller must have the capability! | |
2441 | |
2442 #ifndef PRODUCT | |
2443 { | |
2444 ResourceMark rm; | |
2445 // Check the signatures. | |
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2446 ciSignature* sig = callee()->signature(); |
0 | 2447 #ifdef ASSERT |
2448 if (!is_store) { | |
2449 // Object getObject(Object base, int/long offset), etc. | |
2450 BasicType rtype = sig->return_type()->basic_type(); | |
2451 if (rtype == T_ADDRESS_HOLDER && callee()->name() == ciSymbol::getAddress_name()) | |
2452 rtype = T_ADDRESS; // it is really a C void* | |
2453 assert(rtype == type, "getter must return the expected value"); | |
2454 if (!is_native_ptr) { | |
2455 assert(sig->count() == 2, "oop getter has 2 arguments"); | |
2456 assert(sig->type_at(0)->basic_type() == T_OBJECT, "getter base is object"); | |
2457 assert(sig->type_at(1)->basic_type() == T_LONG, "getter offset is correct"); | |
2458 } else { | |
2459 assert(sig->count() == 1, "native getter has 1 argument"); | |
2460 assert(sig->type_at(0)->basic_type() == T_LONG, "getter base is long"); | |
2461 } | |
2462 } else { | |
2463 // void putObject(Object base, int/long offset, Object x), etc. | |
2464 assert(sig->return_type()->basic_type() == T_VOID, "putter must not return a value"); | |
2465 if (!is_native_ptr) { | |
2466 assert(sig->count() == 3, "oop putter has 3 arguments"); | |
2467 assert(sig->type_at(0)->basic_type() == T_OBJECT, "putter base is object"); | |
2468 assert(sig->type_at(1)->basic_type() == T_LONG, "putter offset is correct"); | |
2469 } else { | |
2470 assert(sig->count() == 2, "native putter has 2 arguments"); | |
2471 assert(sig->type_at(0)->basic_type() == T_LONG, "putter base is long"); | |
2472 } | |
2473 BasicType vtype = sig->type_at(sig->count()-1)->basic_type(); | |
2474 if (vtype == T_ADDRESS_HOLDER && callee()->name() == ciSymbol::putAddress_name()) | |
2475 vtype = T_ADDRESS; // it is really a C void* | |
2476 assert(vtype == type, "putter must accept the expected value"); | |
2477 } | |
2478 #endif // ASSERT | |
2479 } | |
2480 #endif //PRODUCT | |
2481 | |
2482 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2483 | |
7194
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2484 Node* receiver = argument(0); // type: oop |
0 | 2485 |
2486 // Build address expression. See the code in inline_unsafe_prefetch. | |
7194
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2487 Node* adr; |
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2488 Node* heap_base_oop = top(); |
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|
2489 Node* offset = top(); |
7194
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2490 Node* val; |
3249
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|
2491 |
0 | 2492 if (!is_native_ptr) { |
7194
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2493 // The base is either a Java object or a value produced by Unsafe.staticFieldBase |
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|
2494 Node* base = argument(1); // type: oop |
0 | 2495 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset |
7194
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|
2496 offset = argument(2); // type: long |
0 | 2497 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset |
2498 // to be plain byte offsets, which are also the same as those accepted | |
2499 // by oopDesc::field_base. | |
2500 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
2501 "fieldOffset must be byte-scaled"); | |
2502 // 32-bit machines ignore the high half! | |
2503 offset = ConvL2X(offset); | |
2504 adr = make_unsafe_address(base, offset); | |
2505 heap_base_oop = base; | |
7194
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|
2506 val = is_store ? argument(4) : NULL; |
0 | 2507 } else { |
7194
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|
2508 Node* ptr = argument(1); // type: long |
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|
2509 ptr = ConvL2X(ptr); // adjust Java long to machine word |
0 | 2510 adr = make_unsafe_address(NULL, ptr); |
7194
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|
2511 val = is_store ? argument(3) : NULL; |
0 | 2512 } |
2513 | |
2514 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2515 | |
2516 // First guess at the value type. | |
2517 const Type *value_type = Type::get_const_basic_type(type); | |
2518 | |
2519 // Try to categorize the address. If it comes up as TypeJavaPtr::BOTTOM, | |
2520 // there was not enough information to nail it down. | |
2521 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2522 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); | |
2523 | |
2524 // We will need memory barriers unless we can determine a unique | |
2525 // alias category for this reference. (Note: If for some reason | |
2526 // the barriers get omitted and the unsafe reference begins to "pollute" | |
2527 // the alias analysis of the rest of the graph, either Compile::can_alias | |
2528 // or Compile::must_alias will throw a diagnostic assert.) | |
2529 bool need_mem_bar = (alias_type->adr_type() == TypeOopPtr::BOTTOM); | |
2530 | |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2531 // If we are reading the value of the referent field of a Reference |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2532 // object (either by using Unsafe directly or through reflection) |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2533 // then, if G1 is enabled, we need to record the referent in an |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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2385
diff
changeset
|
2534 // SATB log buffer using the pre-barrier mechanism. |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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6266
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|
2535 // Also we need to add memory barrier to prevent commoning reads |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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6266
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|
2536 // from this field across safepoint since GC can change its value. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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|
2537 bool need_read_barrier = !is_native_ptr && !is_store && |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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2385
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|
2538 offset != top() && heap_base_oop != top(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2539 |
0 | 2540 if (!is_store && type == T_OBJECT) { |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
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|
2541 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type, is_native_ptr); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2542 if (tjp != NULL) { |
0 | 2543 value_type = tjp; |
2544 } | |
2545 } | |
2546 | |
7194
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|
2547 receiver = null_check(receiver); |
0 | 2548 if (stopped()) { |
2549 return true; | |
2550 } | |
2551 // Heap pointers get a null-check from the interpreter, | |
2552 // as a courtesy. However, this is not guaranteed by Unsafe, | |
2553 // and it is not possible to fully distinguish unintended nulls | |
2554 // from intended ones in this API. | |
2555 | |
2556 if (is_volatile) { | |
2557 // We need to emit leading and trailing CPU membars (see below) in | |
2558 // addition to memory membars when is_volatile. This is a little | |
2559 // too strong, but avoids the need to insert per-alias-type | |
2560 // volatile membars (for stores; compare Parse::do_put_xxx), which | |
605 | 2561 // we cannot do effectively here because we probably only have a |
0 | 2562 // rough approximation of type. |
2563 need_mem_bar = true; | |
2564 // For Stores, place a memory ordering barrier now. | |
2565 if (is_store) | |
2566 insert_mem_bar(Op_MemBarRelease); | |
2567 } | |
2568 | |
2569 // Memory barrier to prevent normal and 'unsafe' accesses from | |
2570 // bypassing each other. Happens after null checks, so the | |
2571 // exception paths do not take memory state from the memory barrier, | |
2572 // so there's no problems making a strong assert about mixing users | |
2573 // of safe & unsafe memory. Otherwise fails in a CTW of rt.jar | |
2574 // around 5701, class sun/reflect/UnsafeBooleanFieldAccessorImpl. | |
2575 if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder); | |
2576 | |
2577 if (!is_store) { | |
2578 Node* p = make_load(control(), adr, value_type, type, adr_type, is_volatile); | |
7194
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|
2579 // load value |
0 | 2580 switch (type) { |
2581 case T_BOOLEAN: | |
2582 case T_CHAR: | |
2583 case T_BYTE: | |
2584 case T_SHORT: | |
2585 case T_INT: | |
7194
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|
2586 case T_LONG: |
0 | 2587 case T_FLOAT: |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
2588 case T_DOUBLE: |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2589 break; |
0 | 2590 case T_OBJECT: |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2591 if (need_read_barrier) { |
7194
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|
2592 insert_pre_barrier(heap_base_oop, offset, p, !(is_volatile || need_mem_bar)); |
3249
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|
2593 } |
0 | 2594 break; |
2595 case T_ADDRESS: | |
2596 // Cast to an int type. | |
7194
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|
2597 p = _gvn.transform(new (C) CastP2XNode(NULL, p)); |
0 | 2598 p = ConvX2L(p); |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
2599 break; |
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|
2600 default: |
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|
2601 fatal(err_msg_res("unexpected type %d: %s", type, type2name(type))); |
0 | 2602 break; |
2603 } | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
2604 // The load node has the control of the preceding MemBarCPUOrder. All |
beebba0acc11
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|
2605 // following nodes will have the control of the MemBarCPUOrder inserted at |
beebba0acc11
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2606 // the end of this method. So, pushing the load onto the stack at a later |
beebba0acc11
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|
2607 // point is fine. |
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|
2608 set_result(p); |
0 | 2609 } else { |
2610 // place effect of store into memory | |
2611 switch (type) { | |
2612 case T_DOUBLE: | |
2613 val = dstore_rounding(val); | |
2614 break; | |
2615 case T_ADDRESS: | |
2616 // Repackage the long as a pointer. | |
2617 val = ConvL2X(val); | |
11080
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|
2618 val = _gvn.transform(new (C) CastX2PNode(val)); |
0 | 2619 break; |
2620 } | |
2621 | |
2622 if (type != T_OBJECT ) { | |
2623 (void) store_to_memory(control(), adr, val, type, adr_type, is_volatile); | |
2624 } else { | |
2625 // Possibly an oop being stored to Java heap or native memory | |
2626 if (!TypePtr::NULL_PTR->higher_equal(_gvn.type(heap_base_oop))) { | |
2627 // oop to Java heap. | |
825 | 2628 (void) store_oop_to_unknown(control(), heap_base_oop, adr, adr_type, val, type); |
0 | 2629 } else { |
2630 // We can't tell at compile time if we are storing in the Java heap or outside | |
2631 // of it. So we need to emit code to conditionally do the proper type of | |
2632 // store. | |
2633 | |
2444
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7032314: Allow to generate CallLeafNoFPNode in IdealKit
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2405
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|
2634 IdealKit ideal(this); |
851
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|
2635 #define __ ideal. |
0 | 2636 // QQQ who knows what probability is here?? |
851
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6851742: (EA) allocation elimination doesn't work with UseG1GC
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diff
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|
2637 __ if_then(heap_base_oop, BoolTest::ne, null(), PROB_UNLIKELY(0.999)); { |
fc4be448891f
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|
2638 // Sync IdealKit and graphKit. |
2444
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kvn
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2405
diff
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|
2639 sync_kit(ideal); |
851
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2640 Node* st = store_oop_to_unknown(control(), heap_base_oop, adr, adr_type, val, type); |
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2641 // Update IdealKit memory. |
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2642 __ sync_kit(this); |
851
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2643 } __ else_(); { |
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2644 __ store(__ ctrl(), adr, val, type, alias_type->index(), is_volatile); |
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2645 } __ end_if(); |
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2646 // Final sync IdealKit and GraphKit. |
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2647 final_sync(ideal); |
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2648 #undef __ |
0 | 2649 } |
2650 } | |
2651 } | |
2652 | |
2653 if (is_volatile) { | |
2654 if (!is_store) | |
2655 insert_mem_bar(Op_MemBarAcquire); | |
2656 else | |
2657 insert_mem_bar(Op_MemBarVolatile); | |
2658 } | |
2659 | |
2660 if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder); | |
2661 | |
2662 return true; | |
2663 } | |
2664 | |
2665 //----------------------------inline_unsafe_prefetch---------------------------- | |
2666 | |
2667 bool LibraryCallKit::inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static) { | |
2668 #ifndef PRODUCT | |
2669 { | |
2670 ResourceMark rm; | |
2671 // Check the signatures. | |
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2672 ciSignature* sig = callee()->signature(); |
0 | 2673 #ifdef ASSERT |
2674 // Object getObject(Object base, int/long offset), etc. | |
2675 BasicType rtype = sig->return_type()->basic_type(); | |
2676 if (!is_native_ptr) { | |
2677 assert(sig->count() == 2, "oop prefetch has 2 arguments"); | |
2678 assert(sig->type_at(0)->basic_type() == T_OBJECT, "prefetch base is object"); | |
2679 assert(sig->type_at(1)->basic_type() == T_LONG, "prefetcha offset is correct"); | |
2680 } else { | |
2681 assert(sig->count() == 1, "native prefetch has 1 argument"); | |
2682 assert(sig->type_at(0)->basic_type() == T_LONG, "prefetch base is long"); | |
2683 } | |
2684 #endif // ASSERT | |
2685 } | |
2686 #endif // !PRODUCT | |
2687 | |
2688 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2689 | |
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2690 const int idx = is_static ? 0 : 1; |
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2691 if (!is_static) { |
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2692 null_check_receiver(); |
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2693 if (stopped()) { |
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2694 return true; |
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2695 } |
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2696 } |
0 | 2697 |
2698 // Build address expression. See the code in inline_unsafe_access. | |
2699 Node *adr; | |
2700 if (!is_native_ptr) { | |
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2701 // The base is either a Java object or a value produced by Unsafe.staticFieldBase |
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2702 Node* base = argument(idx + 0); // type: oop |
0 | 2703 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset |
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2704 Node* offset = argument(idx + 1); // type: long |
0 | 2705 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset |
2706 // to be plain byte offsets, which are also the same as those accepted | |
2707 // by oopDesc::field_base. | |
2708 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
2709 "fieldOffset must be byte-scaled"); | |
2710 // 32-bit machines ignore the high half! | |
2711 offset = ConvL2X(offset); | |
2712 adr = make_unsafe_address(base, offset); | |
2713 } else { | |
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2714 Node* ptr = argument(idx + 0); // type: long |
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2715 ptr = ConvL2X(ptr); // adjust Java long to machine word |
0 | 2716 adr = make_unsafe_address(NULL, ptr); |
2717 } | |
2718 | |
2719 // Generate the read or write prefetch | |
2720 Node *prefetch; | |
2721 if (is_store) { | |
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2722 prefetch = new (C) PrefetchWriteNode(i_o(), adr); |
0 | 2723 } else { |
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2724 prefetch = new (C) PrefetchReadNode(i_o(), adr); |
0 | 2725 } |
2726 prefetch->init_req(0, control()); | |
2727 set_i_o(_gvn.transform(prefetch)); | |
2728 | |
2729 return true; | |
2730 } | |
2731 | |
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2732 //----------------------------inline_unsafe_load_store---------------------------- |
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2733 // This method serves a couple of different customers (depending on LoadStoreKind): |
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2734 // |
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2735 // LS_cmpxchg: |
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2736 // public final native boolean compareAndSwapObject(Object o, long offset, Object expected, Object x); |
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2737 // public final native boolean compareAndSwapInt( Object o, long offset, int expected, int x); |
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2738 // public final native boolean compareAndSwapLong( Object o, long offset, long expected, long x); |
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2739 // |
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2740 // LS_xadd: |
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2741 // public int getAndAddInt( Object o, long offset, int delta) |
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2742 // public long getAndAddLong(Object o, long offset, long delta) |
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2743 // |
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2744 // LS_xchg: |
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2745 // int getAndSet(Object o, long offset, int newValue) |
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2746 // long getAndSet(Object o, long offset, long newValue) |
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2747 // Object getAndSet(Object o, long offset, Object newValue) |
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2748 // |
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2749 bool LibraryCallKit::inline_unsafe_load_store(BasicType type, LoadStoreKind kind) { |
0 | 2750 // This basic scheme here is the same as inline_unsafe_access, but |
2751 // differs in enough details that combining them would make the code | |
2752 // overly confusing. (This is a true fact! I originally combined | |
2753 // them, but even I was confused by it!) As much code/comments as | |
2754 // possible are retained from inline_unsafe_access though to make | |
605 | 2755 // the correspondences clearer. - dl |
0 | 2756 |
2757 if (callee()->is_static()) return false; // caller must have the capability! | |
2758 | |
2759 #ifndef PRODUCT | |
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2760 BasicType rtype; |
0 | 2761 { |
2762 ResourceMark rm; | |
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2763 // Check the signatures. |
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2764 ciSignature* sig = callee()->signature(); |
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2765 rtype = sig->return_type()->basic_type(); |
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2766 if (kind == LS_xadd || kind == LS_xchg) { |
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2767 // Check the signatures. |
0 | 2768 #ifdef ASSERT |
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2769 assert(rtype == type, "get and set must return the expected type"); |
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2770 assert(sig->count() == 3, "get and set has 3 arguments"); |
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2771 assert(sig->type_at(0)->basic_type() == T_OBJECT, "get and set base is object"); |
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2772 assert(sig->type_at(1)->basic_type() == T_LONG, "get and set offset is long"); |
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2773 assert(sig->type_at(2)->basic_type() == type, "get and set must take expected type as new value/delta"); |
0 | 2774 #endif // ASSERT |
6795
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2775 } else if (kind == LS_cmpxchg) { |
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2776 // Check the signatures. |
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2777 #ifdef ASSERT |
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2778 assert(rtype == T_BOOLEAN, "CAS must return boolean"); |
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2779 assert(sig->count() == 4, "CAS has 4 arguments"); |
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2780 assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object"); |
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2781 assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long"); |
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2782 #endif // ASSERT |
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2783 } else { |
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2784 ShouldNotReachHere(); |
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2785 } |
0 | 2786 } |
2787 #endif //PRODUCT | |
2788 | |
2789 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2790 | |
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2791 // Get arguments: |
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2792 Node* receiver = NULL; |
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2793 Node* base = NULL; |
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2794 Node* offset = NULL; |
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2795 Node* oldval = NULL; |
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2796 Node* newval = NULL; |
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2797 if (kind == LS_cmpxchg) { |
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2798 const bool two_slot_type = type2size[type] == 2; |
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2799 receiver = argument(0); // type: oop |
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2800 base = argument(1); // type: oop |
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2801 offset = argument(2); // type: long |
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2802 oldval = argument(4); // type: oop, int, or long |
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2803 newval = argument(two_slot_type ? 6 : 5); // type: oop, int, or long |
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2804 } else if (kind == LS_xadd || kind == LS_xchg){ |
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2805 receiver = argument(0); // type: oop |
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2806 base = argument(1); // type: oop |
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2807 offset = argument(2); // type: long |
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2808 oldval = NULL; |
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2809 newval = argument(4); // type: oop, int, or long |
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2810 } |
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2811 |
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2812 // Null check receiver. |
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2813 receiver = null_check(receiver); |
0 | 2814 if (stopped()) { |
2815 return true; | |
2816 } | |
2817 | |
2818 // Build field offset expression. | |
2819 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset | |
2820 // to be plain byte offsets, which are also the same as those accepted | |
2821 // by oopDesc::field_base. | |
2822 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); | |
2823 // 32-bit machines ignore the high half of long offsets | |
2824 offset = ConvL2X(offset); | |
2825 Node* adr = make_unsafe_address(base, offset); | |
2826 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2827 | |
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2828 // For CAS, unlike inline_unsafe_access, there seems no point in |
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2829 // trying to refine types. Just use the coarse types here. |
0 | 2830 const Type *value_type = Type::get_const_basic_type(type); |
2831 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2832 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); | |
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2833 |
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2834 if (kind == LS_xchg && type == T_OBJECT) { |
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2835 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type); |
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2836 if (tjp != NULL) { |
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changeset
|
2837 value_type = tjp; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2838 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2839 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2840 |
0 | 2841 int alias_idx = C->get_alias_index(adr_type); |
2842 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2843 // Memory-model-wise, a LoadStore acts like a little synchronized |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2844 // block, so needs barriers on each side. These don't translate |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2845 // into actual barriers on most machines, but we still need rest of |
0 | 2846 // compiler to respect ordering. |
2847 | |
2848 insert_mem_bar(Op_MemBarRelease); | |
2849 insert_mem_bar(Op_MemBarCPUOrder); | |
2850 | |
2851 // 4984716: MemBars must be inserted before this | |
2852 // memory node in order to avoid a false | |
2853 // dependency which will confuse the scheduler. | |
2854 Node *mem = memory(alias_idx); | |
2855 | |
2856 // For now, we handle only those cases that actually exist: ints, | |
2857 // longs, and Object. Adding others should be straightforward. | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2858 Node* load_store; |
0 | 2859 switch(type) { |
2860 case T_INT: | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2861 if (kind == LS_xadd) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2862 load_store = _gvn.transform(new (C) GetAndAddINode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2863 } else if (kind == LS_xchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2864 load_store = _gvn.transform(new (C) GetAndSetINode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2865 } else if (kind == LS_cmpxchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2866 load_store = _gvn.transform(new (C) CompareAndSwapINode(control(), mem, adr, newval, oldval)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2867 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2868 ShouldNotReachHere(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2869 } |
0 | 2870 break; |
2871 case T_LONG: | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2872 if (kind == LS_xadd) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2873 load_store = _gvn.transform(new (C) GetAndAddLNode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2874 } else if (kind == LS_xchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2875 load_store = _gvn.transform(new (C) GetAndSetLNode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2876 } else if (kind == LS_cmpxchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2877 load_store = _gvn.transform(new (C) CompareAndSwapLNode(control(), mem, adr, newval, oldval)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2878 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2879 ShouldNotReachHere(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2880 } |
0 | 2881 break; |
2882 case T_OBJECT: | |
4894
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2883 // Transformation of a value which could be NULL pointer (CastPP #NULL) |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2884 // could be delayed during Parse (for example, in adjust_map_after_if()). |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2885 // Execute transformation here to avoid barrier generation in such case. |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2886 if (_gvn.type(newval) == TypePtr::NULL_PTR) |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2887 newval = _gvn.makecon(TypePtr::NULL_PTR); |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2888 |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2889 // Reference stores need a store barrier. |
12169
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2890 if (kind == LS_xchg) { |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2891 // If pre-barrier must execute before the oop store, old value will require do_load here. |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2892 if (!can_move_pre_barrier()) { |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2893 pre_barrier(true /* do_load*/, |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2894 control(), base, adr, alias_idx, newval, value_type->make_oopptr(), |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2895 NULL /* pre_val*/, |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2896 T_OBJECT); |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2897 } // Else move pre_barrier to use load_store value, see below. |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2898 } else if (kind == LS_cmpxchg) { |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2899 // Same as for newval above: |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2900 if (_gvn.type(oldval) == TypePtr::NULL_PTR) { |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2901 oldval = _gvn.makecon(TypePtr::NULL_PTR); |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2902 } |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2903 // The only known value which might get overwritten is oldval. |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2904 pre_barrier(false /* do_load */, |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2905 control(), NULL, NULL, max_juint, NULL, NULL, |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2906 oldval /* pre_val */, |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2907 T_OBJECT); |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2908 } else { |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2909 ShouldNotReachHere(); |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2910 } |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2911 |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
34
diff
changeset
|
2912 #ifdef _LP64 |
163 | 2913 if (adr->bottom_type()->is_ptr_to_narrowoop()) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2914 Node *newval_enc = _gvn.transform(new (C) EncodePNode(newval, newval->bottom_type()->make_narrowoop())); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2915 if (kind == LS_xchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2916 load_store = _gvn.transform(new (C) GetAndSetNNode(control(), mem, adr, |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2917 newval_enc, adr_type, value_type->make_narrowoop())); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2918 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2919 assert(kind == LS_cmpxchg, "wrong LoadStore operation"); |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2920 Node *oldval_enc = _gvn.transform(new (C) EncodePNode(oldval, oldval->bottom_type()->make_narrowoop())); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2921 load_store = _gvn.transform(new (C) CompareAndSwapNNode(control(), mem, adr, |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2922 newval_enc, oldval_enc)); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2923 } |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
34
diff
changeset
|
2924 } else |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
34
diff
changeset
|
2925 #endif |
221
1e026f8da827
6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents:
174
diff
changeset
|
2926 { |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2927 if (kind == LS_xchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2928 load_store = _gvn.transform(new (C) GetAndSetPNode(control(), mem, adr, newval, adr_type, value_type->is_oopptr())); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2929 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2930 assert(kind == LS_cmpxchg, "wrong LoadStore operation"); |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2931 load_store = _gvn.transform(new (C) CompareAndSwapPNode(control(), mem, adr, newval, oldval)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2932 } |
221
1e026f8da827
6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents:
174
diff
changeset
|
2933 } |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2934 post_barrier(control(), load_store, base, adr, alias_idx, newval, T_OBJECT, true); |
0 | 2935 break; |
2936 default: | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2937 fatal(err_msg_res("unexpected type %d: %s", type, type2name(type))); |
0 | 2938 break; |
2939 } | |
2940 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2941 // SCMemProjNodes represent the memory state of a LoadStore. Their |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2942 // main role is to prevent LoadStore nodes from being optimized away |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2943 // when their results aren't used. |
11080
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
2944 Node* proj = _gvn.transform(new (C) SCMemProjNode(load_store)); |
0 | 2945 set_memory(proj, alias_idx); |
2946 | |
12169
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2947 if (type == T_OBJECT && kind == LS_xchg) { |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2948 #ifdef _LP64 |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2949 if (adr->bottom_type()->is_ptr_to_narrowoop()) { |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2950 load_store = _gvn.transform(new (C) DecodeNNode(load_store, load_store->get_ptr_type())); |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2951 } |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2952 #endif |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2953 if (can_move_pre_barrier()) { |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2954 // Don't need to load pre_val. The old value is returned by load_store. |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2955 // The pre_barrier can execute after the xchg as long as no safepoint |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2956 // gets inserted between them. |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2957 pre_barrier(false /* do_load */, |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2958 control(), NULL, NULL, max_juint, NULL, NULL, |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2959 load_store /* pre_val */, |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2960 T_OBJECT); |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2961 } |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2962 } |
29aa8936f03c
8023597: Optimize G1 barriers code for unsafe load_store
kvn
parents:
12078
diff
changeset
|
2963 |
0 | 2964 // Add the trailing membar surrounding the access |
2965 insert_mem_bar(Op_MemBarCPUOrder); | |
2966 insert_mem_bar(Op_MemBarAcquire); | |
2967 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2968 assert(type2size[load_store->bottom_type()->basic_type()] == type2size[rtype], "result type should match"); |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2969 set_result(load_store); |
0 | 2970 return true; |
2971 } | |
2972 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2973 //----------------------------inline_unsafe_ordered_store---------------------- |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2974 // public native void sun.misc.Unsafe.putOrderedObject(Object o, long offset, Object x); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2975 // public native void sun.misc.Unsafe.putOrderedInt(Object o, long offset, int x); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2976 // public native void sun.misc.Unsafe.putOrderedLong(Object o, long offset, long x); |
0 | 2977 bool LibraryCallKit::inline_unsafe_ordered_store(BasicType type) { |
2978 // This is another variant of inline_unsafe_access, differing in | |
2979 // that it always issues store-store ("release") barrier and ensures | |
2980 // store-atomicity (which only matters for "long"). | |
2981 | |
2982 if (callee()->is_static()) return false; // caller must have the capability! | |
2983 | |
2984 #ifndef PRODUCT | |
2985 { | |
2986 ResourceMark rm; | |
2987 // Check the signatures. | |
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2988 ciSignature* sig = callee()->signature(); |
0 | 2989 #ifdef ASSERT |
2990 BasicType rtype = sig->return_type()->basic_type(); | |
2991 assert(rtype == T_VOID, "must return void"); | |
2992 assert(sig->count() == 3, "has 3 arguments"); | |
2993 assert(sig->type_at(0)->basic_type() == T_OBJECT, "base is object"); | |
2994 assert(sig->type_at(1)->basic_type() == T_LONG, "offset is long"); | |
2995 #endif // ASSERT | |
2996 } | |
2997 #endif //PRODUCT | |
2998 | |
2999 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
3000 | |
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3001 // Get arguments: |
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3002 Node* receiver = argument(0); // type: oop |
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3003 Node* base = argument(1); // type: oop |
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3004 Node* offset = argument(2); // type: long |
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3005 Node* val = argument(4); // type: oop, int, or long |
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3006 |
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3007 // Null check receiver. |
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3008 receiver = null_check(receiver); |
0 | 3009 if (stopped()) { |
3010 return true; | |
3011 } | |
3012 | |
3013 // Build field offset expression. | |
3014 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); | |
3015 // 32-bit machines ignore the high half of long offsets | |
3016 offset = ConvL2X(offset); | |
3017 Node* adr = make_unsafe_address(base, offset); | |
3018 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
3019 const Type *value_type = Type::get_const_basic_type(type); | |
3020 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
3021 | |
3022 insert_mem_bar(Op_MemBarRelease); | |
3023 insert_mem_bar(Op_MemBarCPUOrder); | |
3024 // Ensure that the store is atomic for longs: | |
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3025 const bool require_atomic_access = true; |
0 | 3026 Node* store; |
3027 if (type == T_OBJECT) // reference stores need a store barrier. | |
825 | 3028 store = store_oop_to_unknown(control(), base, adr, adr_type, val, type); |
0 | 3029 else { |
3030 store = store_to_memory(control(), adr, val, type, adr_type, require_atomic_access); | |
3031 } | |
3032 insert_mem_bar(Op_MemBarCPUOrder); | |
3033 return true; | |
3034 } | |
3035 | |
7425 | 3036 bool LibraryCallKit::inline_unsafe_fence(vmIntrinsics::ID id) { |
3037 // Regardless of form, don't allow previous ld/st to move down, | |
3038 // then issue acquire, release, or volatile mem_bar. | |
3039 insert_mem_bar(Op_MemBarCPUOrder); | |
3040 switch(id) { | |
3041 case vmIntrinsics::_loadFence: | |
3042 insert_mem_bar(Op_MemBarAcquire); | |
3043 return true; | |
3044 case vmIntrinsics::_storeFence: | |
3045 insert_mem_bar(Op_MemBarRelease); | |
3046 return true; | |
3047 case vmIntrinsics::_fullFence: | |
3048 insert_mem_bar(Op_MemBarVolatile); | |
3049 return true; | |
3050 default: | |
3051 fatal_unexpected_iid(id); | |
3052 return false; | |
3053 } | |
3054 } | |
3055 | |
12078 | 3056 bool LibraryCallKit::klass_needs_init_guard(Node* kls) { |
3057 if (!kls->is_Con()) { | |
3058 return true; | |
3059 } | |
3060 const TypeKlassPtr* klsptr = kls->bottom_type()->isa_klassptr(); | |
3061 if (klsptr == NULL) { | |
3062 return true; | |
3063 } | |
3064 ciInstanceKlass* ik = klsptr->klass()->as_instance_klass(); | |
3065 // don't need a guard for a klass that is already initialized | |
3066 return !ik->is_initialized(); | |
3067 } | |
3068 | |
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3069 //----------------------------inline_unsafe_allocate--------------------------- |
12078 | 3070 // public native Object sun.misc.Unsafe.allocateInstance(Class<?> cls); |
0 | 3071 bool LibraryCallKit::inline_unsafe_allocate() { |
3072 if (callee()->is_static()) return false; // caller must have the capability! | |
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3073 |
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3074 null_check_receiver(); // null-check, then ignore |
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3075 Node* cls = null_check(argument(1)); |
0 | 3076 if (stopped()) return true; |
3077 | |
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3078 Node* kls = load_klass_from_mirror(cls, false, NULL, 0); |
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3079 kls = null_check(kls); |
0 | 3080 if (stopped()) return true; // argument was like int.class |
3081 | |
12078 | 3082 Node* test = NULL; |
3083 if (LibraryCallKit::klass_needs_init_guard(kls)) { | |
3084 // Note: The argument might still be an illegal value like | |
3085 // Serializable.class or Object[].class. The runtime will handle it. | |
3086 // But we must make an explicit check for initialization. | |
3087 Node* insp = basic_plus_adr(kls, in_bytes(InstanceKlass::init_state_offset())); | |
3088 // Use T_BOOLEAN for InstanceKlass::_init_state so the compiler | |
3089 // can generate code to load it as unsigned byte. | |
3090 Node* inst = make_load(NULL, insp, TypeInt::UBYTE, T_BOOLEAN); | |
3091 Node* bits = intcon(InstanceKlass::fully_initialized); | |
3092 test = _gvn.transform(new (C) SubINode(inst, bits)); | |
3093 // The 'test' is non-zero if we need to take a slow path. | |
3094 } | |
0 | 3095 |
3096 Node* obj = new_instance(kls, test); | |
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3097 set_result(obj); |
0 | 3098 return true; |
3099 } | |
3100 | |
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3101 #ifdef TRACE_HAVE_INTRINSICS |
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3102 /* |
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3103 * oop -> myklass |
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3104 * myklass->trace_id |= USED |
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3105 * return myklass->trace_id & ~0x3 |
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3106 */ |
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3107 bool LibraryCallKit::inline_native_classID() { |
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3108 null_check_receiver(); // null-check, then ignore |
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3109 Node* cls = null_check(argument(1), T_OBJECT); |
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3110 Node* kls = load_klass_from_mirror(cls, false, NULL, 0); |
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3111 kls = null_check(kls, T_OBJECT); |
6006
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3112 ByteSize offset = TRACE_ID_OFFSET; |
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3113 Node* insp = basic_plus_adr(kls, in_bytes(offset)); |
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3114 Node* tvalue = make_load(NULL, insp, TypeLong::LONG, T_LONG); |
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3115 Node* bits = longcon(~0x03l); // ignore bit 0 & 1 |
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3116 Node* andl = _gvn.transform(new (C) AndLNode(tvalue, bits)); |
6006
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3117 Node* clsused = longcon(0x01l); // set the class bit |
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3118 Node* orl = _gvn.transform(new (C) OrLNode(tvalue, clsused)); |
6006
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3119 |
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3120 const TypePtr *adr_type = _gvn.type(insp)->isa_ptr(); |
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3121 store_to_memory(control(), insp, orl, T_LONG, adr_type); |
7194
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3122 set_result(andl); |
6006
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3123 return true; |
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|
3124 } |
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|
3125 |
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3126 bool LibraryCallKit::inline_native_threadID() { |
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3127 Node* tls_ptr = NULL; |
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3128 Node* cur_thr = generate_current_thread(tls_ptr); |
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3129 Node* p = basic_plus_adr(top()/*!oop*/, tls_ptr, in_bytes(JavaThread::osthread_offset())); |
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3130 Node* osthread = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS); |
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3131 p = basic_plus_adr(top()/*!oop*/, osthread, in_bytes(OSThread::thread_id_offset())); |
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3132 |
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3133 Node* threadid = NULL; |
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3134 size_t thread_id_size = OSThread::thread_id_size(); |
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3135 if (thread_id_size == (size_t) BytesPerLong) { |
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3136 threadid = ConvL2I(make_load(control(), p, TypeLong::LONG, T_LONG)); |
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3137 } else if (thread_id_size == (size_t) BytesPerInt) { |
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3138 threadid = make_load(control(), p, TypeInt::INT, T_INT); |
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3139 } else { |
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3140 ShouldNotReachHere(); |
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|
3141 } |
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3142 set_result(threadid); |
6006
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|
3143 return true; |
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|
3144 } |
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|
3145 #endif |
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3146 |
0 | 3147 //------------------------inline_native_time_funcs-------------- |
3148 // inline code for System.currentTimeMillis() and System.nanoTime() | |
3149 // these have the same type and signature | |
6006
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3150 bool LibraryCallKit::inline_native_time_funcs(address funcAddr, const char* funcName) { |
7194
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3151 const TypeFunc* tf = OptoRuntime::void_long_Type(); |
0 | 3152 const TypePtr* no_memory_effects = NULL; |
3153 Node* time = make_runtime_call(RC_LEAF, tf, funcAddr, funcName, no_memory_effects); | |
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3154 Node* value = _gvn.transform(new (C) ProjNode(time, TypeFunc::Parms+0)); |
0 | 3155 #ifdef ASSERT |
7194
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3156 Node* value_top = _gvn.transform(new (C) ProjNode(time, TypeFunc::Parms+1)); |
0 | 3157 assert(value_top == top(), "second value must be top"); |
3158 #endif | |
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3159 set_result(value); |
0 | 3160 return true; |
3161 } | |
3162 | |
3163 //------------------------inline_native_currentThread------------------ | |
3164 bool LibraryCallKit::inline_native_currentThread() { | |
3165 Node* junk = NULL; | |
7194
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3166 set_result(generate_current_thread(junk)); |
0 | 3167 return true; |
3168 } | |
3169 | |
3170 //------------------------inline_native_isInterrupted------------------ | |
7194
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3171 // private native boolean java.lang.Thread.isInterrupted(boolean ClearInterrupted); |
0 | 3172 bool LibraryCallKit::inline_native_isInterrupted() { |
3173 // Add a fast path to t.isInterrupted(clear_int): | |
17716
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|
3174 // (t == Thread.current() && |
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|
3175 // (!TLS._osthread._interrupted || WINDOWS_ONLY(false) NOT_WINDOWS(!clear_int))) |
0 | 3176 // ? TLS._osthread._interrupted : /*slow path:*/ t.isInterrupted(clear_int) |
3177 // So, in the common case that the interrupt bit is false, | |
3178 // we avoid making a call into the VM. Even if the interrupt bit | |
3179 // is true, if the clear_int argument is false, we avoid the VM call. | |
3180 // However, if the receiver is not currentThread, we must call the VM, | |
3181 // because there must be some locking done around the operation. | |
3182 | |
3183 // We only go to the fast case code if we pass two guards. | |
3184 // Paths which do not pass are accumulated in the slow_region. | |
7422
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3185 |
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|
3186 enum { |
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3187 no_int_result_path = 1, // t == Thread.current() && !TLS._osthread._interrupted |
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3188 no_clear_result_path = 2, // t == Thread.current() && TLS._osthread._interrupted && !clear_int |
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3189 slow_result_path = 3, // slow path: t.isInterrupted(clear_int) |
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3190 PATH_LIMIT |
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|
3191 }; |
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3192 |
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3193 // Ensure that it's not possible to move the load of TLS._osthread._interrupted flag |
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3194 // out of the function. |
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|
3195 insert_mem_bar(Op_MemBarCPUOrder); |
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3196 |
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|
3197 RegionNode* result_rgn = new (C) RegionNode(PATH_LIMIT); |
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|
3198 PhiNode* result_val = new (C) PhiNode(result_rgn, TypeInt::BOOL); |
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3199 |
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3200 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 3201 record_for_igvn(slow_region); |
3202 | |
3203 // (a) Receiving thread must be the current thread. | |
3204 Node* rec_thr = argument(0); | |
3205 Node* tls_ptr = NULL; | |
3206 Node* cur_thr = generate_current_thread(tls_ptr); | |
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3207 Node* cmp_thr = _gvn.transform(new (C) CmpPNode(cur_thr, rec_thr)); |
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3208 Node* bol_thr = _gvn.transform(new (C) BoolNode(cmp_thr, BoolTest::ne)); |
0 | 3209 |
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3210 generate_slow_guard(bol_thr, slow_region); |
0 | 3211 |
3212 // (b) Interrupt bit on TLS must be false. | |
3213 Node* p = basic_plus_adr(top()/*!oop*/, tls_ptr, in_bytes(JavaThread::osthread_offset())); | |
3214 Node* osthread = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS); | |
3215 p = basic_plus_adr(top()/*!oop*/, osthread, in_bytes(OSThread::interrupted_offset())); | |
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3216 |
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3217 // Set the control input on the field _interrupted read to prevent it floating up. |
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3218 Node* int_bit = make_load(control(), p, TypeInt::BOOL, T_INT); |
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3219 Node* cmp_bit = _gvn.transform(new (C) CmpINode(int_bit, intcon(0))); |
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3220 Node* bol_bit = _gvn.transform(new (C) BoolNode(cmp_bit, BoolTest::ne)); |
0 | 3221 |
3222 IfNode* iff_bit = create_and_map_if(control(), bol_bit, PROB_UNLIKELY_MAG(3), COUNT_UNKNOWN); | |
3223 | |
3224 // First fast path: if (!TLS._interrupted) return false; | |
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3225 Node* false_bit = _gvn.transform(new (C) IfFalseNode(iff_bit)); |
0 | 3226 result_rgn->init_req(no_int_result_path, false_bit); |
3227 result_val->init_req(no_int_result_path, intcon(0)); | |
3228 | |
3229 // drop through to next case | |
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3230 set_control( _gvn.transform(new (C) IfTrueNode(iff_bit))); |
0 | 3231 |
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3232 #ifndef TARGET_OS_FAMILY_windows |
0 | 3233 // (c) Or, if interrupt bit is set and clear_int is false, use 2nd fast path. |
3234 Node* clr_arg = argument(1); | |
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3235 Node* cmp_arg = _gvn.transform(new (C) CmpINode(clr_arg, intcon(0))); |
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3236 Node* bol_arg = _gvn.transform(new (C) BoolNode(cmp_arg, BoolTest::ne)); |
0 | 3237 IfNode* iff_arg = create_and_map_if(control(), bol_arg, PROB_FAIR, COUNT_UNKNOWN); |
3238 | |
3239 // Second fast path: ... else if (!clear_int) return true; | |
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3240 Node* false_arg = _gvn.transform(new (C) IfFalseNode(iff_arg)); |
0 | 3241 result_rgn->init_req(no_clear_result_path, false_arg); |
3242 result_val->init_req(no_clear_result_path, intcon(1)); | |
3243 | |
3244 // drop through to next case | |
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3245 set_control( _gvn.transform(new (C) IfTrueNode(iff_arg))); |
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3246 #else |
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3247 // To return true on Windows you must read the _interrupted field |
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3248 // and check the the event state i.e. take the slow path. |
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3249 #endif // TARGET_OS_FAMILY_windows |
0 | 3250 |
3251 // (d) Otherwise, go to the slow path. | |
3252 slow_region->add_req(control()); | |
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3253 set_control( _gvn.transform(slow_region)); |
0 | 3254 |
3255 if (stopped()) { | |
3256 // There is no slow path. | |
3257 result_rgn->init_req(slow_result_path, top()); | |
3258 result_val->init_req(slow_result_path, top()); | |
3259 } else { | |
3260 // non-virtual because it is a private non-static | |
3261 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_isInterrupted); | |
3262 | |
3263 Node* slow_val = set_results_for_java_call(slow_call); | |
3264 // this->control() comes from set_results_for_java_call | |
3265 | |
3266 Node* fast_io = slow_call->in(TypeFunc::I_O); | |
3267 Node* fast_mem = slow_call->in(TypeFunc::Memory); | |
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3268 |
0 | 3269 // These two phis are pre-filled with copies of of the fast IO and Memory |
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3270 PhiNode* result_mem = PhiNode::make(result_rgn, fast_mem, Type::MEMORY, TypePtr::BOTTOM); |
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3271 PhiNode* result_io = PhiNode::make(result_rgn, fast_io, Type::ABIO); |
0 | 3272 |
3273 result_rgn->init_req(slow_result_path, control()); | |
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3274 result_io ->init_req(slow_result_path, i_o()); |
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3275 result_mem->init_req(slow_result_path, reset_memory()); |
0 | 3276 result_val->init_req(slow_result_path, slow_val); |
3277 | |
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3278 set_all_memory(_gvn.transform(result_mem)); |
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3279 set_i_o( _gvn.transform(result_io)); |
0 | 3280 } |
3281 | |
3282 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
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3283 set_result(result_rgn, result_val); |
0 | 3284 return true; |
3285 } | |
3286 | |
3287 //---------------------------load_mirror_from_klass---------------------------- | |
3288 // Given a klass oop, load its java mirror (a java.lang.Class oop). | |
3289 Node* LibraryCallKit::load_mirror_from_klass(Node* klass) { | |
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3290 Node* p = basic_plus_adr(klass, in_bytes(Klass::java_mirror_offset())); |
0 | 3291 return make_load(NULL, p, TypeInstPtr::MIRROR, T_OBJECT); |
3292 } | |
3293 | |
3294 //-----------------------load_klass_from_mirror_common------------------------- | |
3295 // Given a java mirror (a java.lang.Class oop), load its corresponding klass oop. | |
3296 // Test the klass oop for null (signifying a primitive Class like Integer.TYPE), | |
3297 // and branch to the given path on the region. | |
3298 // If never_see_null, take an uncommon trap on null, so we can optimistically | |
3299 // compile for the non-null case. | |
3300 // If the region is NULL, force never_see_null = true. | |
3301 Node* LibraryCallKit::load_klass_from_mirror_common(Node* mirror, | |
3302 bool never_see_null, | |
3303 RegionNode* region, | |
3304 int null_path, | |
3305 int offset) { | |
3306 if (region == NULL) never_see_null = true; | |
3307 Node* p = basic_plus_adr(mirror, offset); | |
3308 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; | |
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3309 Node* kls = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, kls_type)); |
0 | 3310 Node* null_ctl = top(); |
3311 kls = null_check_oop(kls, &null_ctl, never_see_null); | |
3312 if (region != NULL) { | |
3313 // Set region->in(null_path) if the mirror is a primitive (e.g, int.class). | |
3314 region->init_req(null_path, null_ctl); | |
3315 } else { | |
3316 assert(null_ctl == top(), "no loose ends"); | |
3317 } | |
3318 return kls; | |
3319 } | |
3320 | |
3321 //--------------------(inline_native_Class_query helpers)--------------------- | |
3322 // Use this for JVM_ACC_INTERFACE, JVM_ACC_IS_CLONEABLE, JVM_ACC_HAS_FINALIZER. | |
3323 // Fall through if (mods & mask) == bits, take the guard otherwise. | |
3324 Node* LibraryCallKit::generate_access_flags_guard(Node* kls, int modifier_mask, int modifier_bits, RegionNode* region) { | |
3325 // Branch around if the given klass has the given modifier bit set. | |
3326 // Like generate_guard, adds a new path onto the region. | |
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3327 Node* modp = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); |
0 | 3328 Node* mods = make_load(NULL, modp, TypeInt::INT, T_INT); |
3329 Node* mask = intcon(modifier_mask); | |
3330 Node* bits = intcon(modifier_bits); | |
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3331 Node* mbit = _gvn.transform(new (C) AndINode(mods, mask)); |
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3332 Node* cmp = _gvn.transform(new (C) CmpINode(mbit, bits)); |
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3333 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::ne)); |
0 | 3334 return generate_fair_guard(bol, region); |
3335 } | |
3336 Node* LibraryCallKit::generate_interface_guard(Node* kls, RegionNode* region) { | |
3337 return generate_access_flags_guard(kls, JVM_ACC_INTERFACE, 0, region); | |
3338 } | |
3339 | |
3340 //-------------------------inline_native_Class_query------------------- | |
3341 bool LibraryCallKit::inline_native_Class_query(vmIntrinsics::ID id) { | |
3342 const Type* return_type = TypeInt::BOOL; | |
3343 Node* prim_return_value = top(); // what happens if it's a primitive class? | |
3344 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3345 bool expect_prim = false; // most of these guys expect to work on refs | |
3346 | |
3347 enum { _normal_path = 1, _prim_path = 2, PATH_LIMIT }; | |
3348 | |
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3349 Node* mirror = argument(0); |
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3350 Node* obj = top(); |
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3351 |
0 | 3352 switch (id) { |
3353 case vmIntrinsics::_isInstance: | |
3354 // nothing is an instance of a primitive type | |
3355 prim_return_value = intcon(0); | |
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3356 obj = argument(1); |
0 | 3357 break; |
3358 case vmIntrinsics::_getModifiers: | |
3359 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
3360 assert(is_power_of_2((int)JVM_ACC_WRITTEN_FLAGS+1), "change next line"); | |
3361 return_type = TypeInt::make(0, JVM_ACC_WRITTEN_FLAGS, Type::WidenMin); | |
3362 break; | |
3363 case vmIntrinsics::_isInterface: | |
3364 prim_return_value = intcon(0); | |
3365 break; | |
3366 case vmIntrinsics::_isArray: | |
3367 prim_return_value = intcon(0); | |
3368 expect_prim = true; // cf. ObjectStreamClass.getClassSignature | |
3369 break; | |
3370 case vmIntrinsics::_isPrimitive: | |
3371 prim_return_value = intcon(1); | |
3372 expect_prim = true; // obviously | |
3373 break; | |
3374 case vmIntrinsics::_getSuperclass: | |
3375 prim_return_value = null(); | |
3376 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); | |
3377 break; | |
3378 case vmIntrinsics::_getComponentType: | |
3379 prim_return_value = null(); | |
3380 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); | |
3381 break; | |
3382 case vmIntrinsics::_getClassAccessFlags: | |
3383 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
3384 return_type = TypeInt::INT; // not bool! 6297094 | |
3385 break; | |
3386 default: | |
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3387 fatal_unexpected_iid(id); |
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3388 break; |
0 | 3389 } |
3390 | |
3391 const TypeInstPtr* mirror_con = _gvn.type(mirror)->isa_instptr(); | |
3392 if (mirror_con == NULL) return false; // cannot happen? | |
3393 | |
3394 #ifndef PRODUCT | |
12295 | 3395 if (C->print_intrinsics() || C->print_inlining()) { |
0 | 3396 ciType* k = mirror_con->java_mirror_type(); |
3397 if (k) { | |
3398 tty->print("Inlining %s on constant Class ", vmIntrinsics::name_at(intrinsic_id())); | |
3399 k->print_name(); | |
3400 tty->cr(); | |
3401 } | |
3402 } | |
3403 #endif | |
3404 | |
3405 // Null-check the mirror, and the mirror's klass ptr (in case it is a primitive). | |
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3406 RegionNode* region = new (C) RegionNode(PATH_LIMIT); |
0 | 3407 record_for_igvn(region); |
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3408 PhiNode* phi = new (C) PhiNode(region, return_type); |
0 | 3409 |
3410 // The mirror will never be null of Reflection.getClassAccessFlags, however | |
3411 // it may be null for Class.isInstance or Class.getModifiers. Throw a NPE | |
3412 // if it is. See bug 4774291. | |
3413 | |
3414 // For Reflection.getClassAccessFlags(), the null check occurs in | |
3415 // the wrong place; see inline_unsafe_access(), above, for a similar | |
3416 // situation. | |
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3417 mirror = null_check(mirror); |
0 | 3418 // If mirror or obj is dead, only null-path is taken. |
3419 if (stopped()) return true; | |
3420 | |
3421 if (expect_prim) never_see_null = false; // expect nulls (meaning prims) | |
3422 | |
3423 // Now load the mirror's klass metaobject, and null-check it. | |
3424 // Side-effects region with the control path if the klass is null. | |
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3425 Node* kls = load_klass_from_mirror(mirror, never_see_null, region, _prim_path); |
0 | 3426 // If kls is null, we have a primitive mirror. |
3427 phi->init_req(_prim_path, prim_return_value); | |
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3428 if (stopped()) { set_result(region, phi); return true; } |
12966 | 3429 bool safe_for_replace = (region->in(_prim_path) == top()); |
0 | 3430 |
3431 Node* p; // handy temp | |
3432 Node* null_ctl; | |
3433 | |
3434 // Now that we have the non-null klass, we can perform the real query. | |
3435 // For constant classes, the query will constant-fold in LoadNode::Value. | |
3436 Node* query_value = top(); | |
3437 switch (id) { | |
3438 case vmIntrinsics::_isInstance: | |
3439 // nothing is an instance of a primitive type | |
12966 | 3440 query_value = gen_instanceof(obj, kls, safe_for_replace); |
0 | 3441 break; |
3442 | |
3443 case vmIntrinsics::_getModifiers: | |
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3444 p = basic_plus_adr(kls, in_bytes(Klass::modifier_flags_offset())); |
0 | 3445 query_value = make_load(NULL, p, TypeInt::INT, T_INT); |
3446 break; | |
3447 | |
3448 case vmIntrinsics::_isInterface: | |
3449 // (To verify this code sequence, check the asserts in JVM_IsInterface.) | |
3450 if (generate_interface_guard(kls, region) != NULL) | |
3451 // A guard was added. If the guard is taken, it was an interface. | |
3452 phi->add_req(intcon(1)); | |
3453 // If we fall through, it's a plain class. | |
3454 query_value = intcon(0); | |
3455 break; | |
3456 | |
3457 case vmIntrinsics::_isArray: | |
3458 // (To verify this code sequence, check the asserts in JVM_IsArrayClass.) | |
3459 if (generate_array_guard(kls, region) != NULL) | |
3460 // A guard was added. If the guard is taken, it was an array. | |
3461 phi->add_req(intcon(1)); | |
3462 // If we fall through, it's a plain class. | |
3463 query_value = intcon(0); | |
3464 break; | |
3465 | |
3466 case vmIntrinsics::_isPrimitive: | |
3467 query_value = intcon(0); // "normal" path produces false | |
3468 break; | |
3469 | |
3470 case vmIntrinsics::_getSuperclass: | |
3471 // The rules here are somewhat unfortunate, but we can still do better | |
3472 // with random logic than with a JNI call. | |
3473 // Interfaces store null or Object as _super, but must report null. | |
3474 // Arrays store an intermediate super as _super, but must report Object. | |
3475 // Other types can report the actual _super. | |
3476 // (To verify this code sequence, check the asserts in JVM_IsInterface.) | |
3477 if (generate_interface_guard(kls, region) != NULL) | |
3478 // A guard was added. If the guard is taken, it was an interface. | |
3479 phi->add_req(null()); | |
3480 if (generate_array_guard(kls, region) != NULL) | |
3481 // A guard was added. If the guard is taken, it was an array. | |
3482 phi->add_req(makecon(TypeInstPtr::make(env()->Object_klass()->java_mirror()))); | |
3483 // If we fall through, it's a plain class. Get its _super. | |
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3484 p = basic_plus_adr(kls, in_bytes(Klass::super_offset())); |
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3485 kls = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, TypeKlassPtr::OBJECT_OR_NULL)); |
0 | 3486 null_ctl = top(); |
3487 kls = null_check_oop(kls, &null_ctl); | |
3488 if (null_ctl != top()) { | |
3489 // If the guard is taken, Object.superClass is null (both klass and mirror). | |
3490 region->add_req(null_ctl); | |
3491 phi ->add_req(null()); | |
3492 } | |
3493 if (!stopped()) { | |
3494 query_value = load_mirror_from_klass(kls); | |
3495 } | |
3496 break; | |
3497 | |
3498 case vmIntrinsics::_getComponentType: | |
3499 if (generate_array_guard(kls, region) != NULL) { | |
3500 // Be sure to pin the oop load to the guard edge just created: | |
3501 Node* is_array_ctrl = region->in(region->req()-1); | |
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3502 Node* cma = basic_plus_adr(kls, in_bytes(ArrayKlass::component_mirror_offset())); |
0 | 3503 Node* cmo = make_load(is_array_ctrl, cma, TypeInstPtr::MIRROR, T_OBJECT); |
3504 phi->add_req(cmo); | |
3505 } | |
3506 query_value = null(); // non-array case is null | |
3507 break; | |
3508 | |
3509 case vmIntrinsics::_getClassAccessFlags: | |
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3510 p = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); |
0 | 3511 query_value = make_load(NULL, p, TypeInt::INT, T_INT); |
3512 break; | |
3513 | |
3514 default: | |
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3515 fatal_unexpected_iid(id); |
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|
3516 break; |
0 | 3517 } |
3518 | |
3519 // Fall-through is the normal case of a query to a real class. | |
3520 phi->init_req(1, query_value); | |
3521 region->init_req(1, control()); | |
3522 | |
3523 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
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|
3524 set_result(region, phi); |
0 | 3525 return true; |
3526 } | |
3527 | |
3528 //--------------------------inline_native_subtype_check------------------------ | |
3529 // This intrinsic takes the JNI calls out of the heart of | |
3530 // UnsafeFieldAccessorImpl.set, which improves Field.set, readObject, etc. | |
3531 bool LibraryCallKit::inline_native_subtype_check() { | |
3532 // Pull both arguments off the stack. | |
3533 Node* args[2]; // two java.lang.Class mirrors: superc, subc | |
3534 args[0] = argument(0); | |
3535 args[1] = argument(1); | |
3536 Node* klasses[2]; // corresponding Klasses: superk, subk | |
3537 klasses[0] = klasses[1] = top(); | |
3538 | |
3539 enum { | |
3540 // A full decision tree on {superc is prim, subc is prim}: | |
3541 _prim_0_path = 1, // {P,N} => false | |
3542 // {P,P} & superc!=subc => false | |
3543 _prim_same_path, // {P,P} & superc==subc => true | |
3544 _prim_1_path, // {N,P} => false | |
3545 _ref_subtype_path, // {N,N} & subtype check wins => true | |
3546 _both_ref_path, // {N,N} & subtype check loses => false | |
3547 PATH_LIMIT | |
3548 }; | |
3549 | |
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3550 RegionNode* region = new (C) RegionNode(PATH_LIMIT); |
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3551 Node* phi = new (C) PhiNode(region, TypeInt::BOOL); |
0 | 3552 record_for_igvn(region); |
3553 | |
3554 const TypePtr* adr_type = TypeRawPtr::BOTTOM; // memory type of loads | |
3555 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; | |
3556 int class_klass_offset = java_lang_Class::klass_offset_in_bytes(); | |
3557 | |
3558 // First null-check both mirrors and load each mirror's klass metaobject. | |
3559 int which_arg; | |
3560 for (which_arg = 0; which_arg <= 1; which_arg++) { | |
3561 Node* arg = args[which_arg]; | |
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3562 arg = null_check(arg); |
0 | 3563 if (stopped()) break; |
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3564 args[which_arg] = arg; |
0 | 3565 |
3566 Node* p = basic_plus_adr(arg, class_klass_offset); | |
164
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3567 Node* kls = LoadKlassNode::make(_gvn, immutable_memory(), p, adr_type, kls_type); |
0 | 3568 klasses[which_arg] = _gvn.transform(kls); |
3569 } | |
3570 | |
3571 // Having loaded both klasses, test each for null. | |
3572 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3573 for (which_arg = 0; which_arg <= 1; which_arg++) { | |
3574 Node* kls = klasses[which_arg]; | |
3575 Node* null_ctl = top(); | |
3576 kls = null_check_oop(kls, &null_ctl, never_see_null); | |
3577 int prim_path = (which_arg == 0 ? _prim_0_path : _prim_1_path); | |
3578 region->init_req(prim_path, null_ctl); | |
3579 if (stopped()) break; | |
3580 klasses[which_arg] = kls; | |
3581 } | |
3582 | |
3583 if (!stopped()) { | |
3584 // now we have two reference types, in klasses[0..1] | |
3585 Node* subk = klasses[1]; // the argument to isAssignableFrom | |
3586 Node* superk = klasses[0]; // the receiver | |
3587 region->set_req(_both_ref_path, gen_subtype_check(subk, superk)); | |
3588 // now we have a successful reference subtype check | |
3589 region->set_req(_ref_subtype_path, control()); | |
3590 } | |
3591 | |
3592 // If both operands are primitive (both klasses null), then | |
3593 // we must return true when they are identical primitives. | |
3594 // It is convenient to test this after the first null klass check. | |
3595 set_control(region->in(_prim_0_path)); // go back to first null check | |
3596 if (!stopped()) { | |
3597 // Since superc is primitive, make a guard for the superc==subc case. | |
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3598 Node* cmp_eq = _gvn.transform(new (C) CmpPNode(args[0], args[1])); |
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|
3599 Node* bol_eq = _gvn.transform(new (C) BoolNode(cmp_eq, BoolTest::eq)); |
0 | 3600 generate_guard(bol_eq, region, PROB_FAIR); |
3601 if (region->req() == PATH_LIMIT+1) { | |
3602 // A guard was added. If the added guard is taken, superc==subc. | |
3603 region->swap_edges(PATH_LIMIT, _prim_same_path); | |
3604 region->del_req(PATH_LIMIT); | |
3605 } | |
3606 region->set_req(_prim_0_path, control()); // Not equal after all. | |
3607 } | |
3608 | |
3609 // these are the only paths that produce 'true': | |
3610 phi->set_req(_prim_same_path, intcon(1)); | |
3611 phi->set_req(_ref_subtype_path, intcon(1)); | |
3612 | |
3613 // pull together the cases: | |
3614 assert(region->req() == PATH_LIMIT, "sane region"); | |
3615 for (uint i = 1; i < region->req(); i++) { | |
3616 Node* ctl = region->in(i); | |
3617 if (ctl == NULL || ctl == top()) { | |
3618 region->set_req(i, top()); | |
3619 phi ->set_req(i, top()); | |
3620 } else if (phi->in(i) == NULL) { | |
3621 phi->set_req(i, intcon(0)); // all other paths produce 'false' | |
3622 } | |
3623 } | |
3624 | |
3625 set_control(_gvn.transform(region)); | |
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diff
changeset
|
3626 set_result(_gvn.transform(phi)); |
0 | 3627 return true; |
3628 } | |
3629 | |
3630 //---------------------generate_array_guard_common------------------------ | |
3631 Node* LibraryCallKit::generate_array_guard_common(Node* kls, RegionNode* region, | |
3632 bool obj_array, bool not_array) { | |
3633 // If obj_array/non_array==false/false: | |
3634 // Branch around if the given klass is in fact an array (either obj or prim). | |
3635 // If obj_array/non_array==false/true: | |
3636 // Branch around if the given klass is not an array klass of any kind. | |
3637 // If obj_array/non_array==true/true: | |
3638 // Branch around if the kls is not an oop array (kls is int[], String, etc.) | |
3639 // If obj_array/non_array==true/false: | |
3640 // Branch around if the kls is an oop array (Object[] or subtype) | |
3641 // | |
3642 // Like generate_guard, adds a new path onto the region. | |
3643 jint layout_con = 0; | |
3644 Node* layout_val = get_layout_helper(kls, layout_con); | |
3645 if (layout_val == NULL) { | |
3646 bool query = (obj_array | |
3647 ? Klass::layout_helper_is_objArray(layout_con) | |
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da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
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diff
changeset
|
3648 : Klass::layout_helper_is_array(layout_con)); |
0 | 3649 if (query == not_array) { |
3650 return NULL; // never a branch | |
3651 } else { // always a branch | |
3652 Node* always_branch = control(); | |
3653 if (region != NULL) | |
3654 region->add_req(always_branch); | |
3655 set_control(top()); | |
3656 return always_branch; | |
3657 } | |
3658 } | |
3659 // Now test the correct condition. | |
3660 jint nval = (obj_array | |
3661 ? ((jint)Klass::_lh_array_tag_type_value | |
3662 << Klass::_lh_array_tag_shift) | |
3663 : Klass::_lh_neutral_value); | |
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diff
changeset
|
3664 Node* cmp = _gvn.transform(new(C) CmpINode(layout_val, intcon(nval))); |
0 | 3665 BoolTest::mask btest = BoolTest::lt; // correct for testing is_[obj]array |
3666 // invert the test if we are looking for a non-array | |
3667 if (not_array) btest = BoolTest(btest).negate(); | |
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diff
changeset
|
3668 Node* bol = _gvn.transform(new(C) BoolNode(cmp, btest)); |
0 | 3669 return generate_fair_guard(bol, region); |
3670 } | |
3671 | |
3672 | |
3673 //-----------------------inline_native_newArray-------------------------- | |
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changeset
|
3674 // private static native Object java.lang.reflect.newArray(Class<?> componentType, int length); |
0 | 3675 bool LibraryCallKit::inline_native_newArray() { |
3676 Node* mirror = argument(0); | |
3677 Node* count_val = argument(1); | |
3678 | |
7194
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diff
changeset
|
3679 mirror = null_check(mirror); |
163 | 3680 // If mirror or obj is dead, only null-path is taken. |
3681 if (stopped()) return true; | |
0 | 3682 |
3683 enum { _normal_path = 1, _slow_path = 2, PATH_LIMIT }; | |
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7193318: C2: remove number of inputs requirement from Node's new operator
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diff
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|
3684 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
3685 PhiNode* result_val = new(C) PhiNode(result_reg, |
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7193318: C2: remove number of inputs requirement from Node's new operator
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changeset
|
3686 TypeInstPtr::NOTNULL); |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
3687 PhiNode* result_io = new(C) PhiNode(result_reg, Type::ABIO); |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
3688 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
3689 TypePtr::BOTTOM); |
0 | 3690 |
3691 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3692 Node* klass_node = load_array_klass_from_mirror(mirror, never_see_null, | |
3693 result_reg, _slow_path); | |
3694 Node* normal_ctl = control(); | |
3695 Node* no_array_ctl = result_reg->in(_slow_path); | |
3696 | |
3697 // Generate code for the slow case. We make a call to newArray(). | |
3698 set_control(no_array_ctl); | |
3699 if (!stopped()) { | |
3700 // Either the input type is void.class, or else the | |
3701 // array klass has not yet been cached. Either the | |
3702 // ensuing call will throw an exception, or else it | |
3703 // will cache the array klass for next time. | |
3704 PreserveJVMState pjvms(this); | |
3705 CallJavaNode* slow_call = generate_method_call_static(vmIntrinsics::_newArray); | |
3706 Node* slow_result = set_results_for_java_call(slow_call); | |
3707 // this->control() comes from set_results_for_java_call | |
3708 result_reg->set_req(_slow_path, control()); | |
3709 result_val->set_req(_slow_path, slow_result); | |
3710 result_io ->set_req(_slow_path, i_o()); | |
3711 result_mem->set_req(_slow_path, reset_memory()); | |
3712 } | |
3713 | |
3714 set_control(normal_ctl); | |
3715 if (!stopped()) { | |
3716 // Normal case: The array type has been cached in the java.lang.Class. | |
3717 // The following call works fine even if the array type is polymorphic. | |
3718 // It could be a dynamic mix of int[], boolean[], Object[], etc. | |
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|
3719 Node* obj = new_array(klass_node, count_val, 0); // no arguments to push |
0 | 3720 result_reg->init_req(_normal_path, control()); |
3721 result_val->init_req(_normal_path, obj); | |
3722 result_io ->init_req(_normal_path, i_o()); | |
3723 result_mem->init_req(_normal_path, reset_memory()); | |
3724 } | |
3725 | |
3726 // Return the combined state. | |
3727 set_i_o( _gvn.transform(result_io) ); | |
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|
3728 set_all_memory( _gvn.transform(result_mem)); |
7194
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|
3729 |
0 | 3730 C->set_has_split_ifs(true); // Has chance for split-if optimization |
7194
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|
3731 set_result(result_reg, result_val); |
0 | 3732 return true; |
3733 } | |
3734 | |
3735 //----------------------inline_native_getLength-------------------------- | |
7194
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|
3736 // public static native int java.lang.reflect.Array.getLength(Object array); |
0 | 3737 bool LibraryCallKit::inline_native_getLength() { |
3738 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; | |
3739 | |
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|
3740 Node* array = null_check(argument(0)); |
0 | 3741 // If array is dead, only null-path is taken. |
3742 if (stopped()) return true; | |
3743 | |
3744 // Deoptimize if it is a non-array. | |
3745 Node* non_array = generate_non_array_guard(load_object_klass(array), NULL); | |
3746 | |
3747 if (non_array != NULL) { | |
3748 PreserveJVMState pjvms(this); | |
3749 set_control(non_array); | |
3750 uncommon_trap(Deoptimization::Reason_intrinsic, | |
3751 Deoptimization::Action_maybe_recompile); | |
3752 } | |
3753 | |
3754 // If control is dead, only non-array-path is taken. | |
3755 if (stopped()) return true; | |
3756 | |
3757 // The works fine even if the array type is polymorphic. | |
3758 // It could be a dynamic mix of int[], boolean[], Object[], etc. | |
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|
3759 Node* result = load_array_length(array); |
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|
3760 |
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|
3761 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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|
3762 set_result(result); |
0 | 3763 return true; |
3764 } | |
3765 | |
3766 //------------------------inline_array_copyOf---------------------------- | |
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|
3767 // public static <T,U> T[] java.util.Arrays.copyOf( U[] original, int newLength, Class<? extends T[]> newType); |
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|
3768 // public static <T,U> T[] java.util.Arrays.copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType); |
0 | 3769 bool LibraryCallKit::inline_array_copyOf(bool is_copyOfRange) { |
3770 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; | |
3771 | |
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|
3772 // Get the arguments. |
0 | 3773 Node* original = argument(0); |
3774 Node* start = is_copyOfRange? argument(1): intcon(0); | |
3775 Node* end = is_copyOfRange? argument(2): argument(1); | |
3776 Node* array_type_mirror = is_copyOfRange? argument(3): argument(2); | |
3777 | |
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6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
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|
3778 Node* newcopy; |
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6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
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|
3779 |
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|
3780 // Set the original stack and the reexecute bit for the interpreter to reexecute |
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|
3781 // the bytecode that invokes Arrays.copyOf if deoptimization happens. |
902
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6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
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|
3782 { PreserveReexecuteState preexecs(this); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
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|
3783 jvms()->set_should_reexecute(true); |
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|
3784 |
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|
3785 array_type_mirror = null_check(array_type_mirror); |
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|
3786 original = null_check(original); |
902
fc2281ddce3c
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|
3787 |
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changeset
|
3788 // Check if a null path was taken unconditionally. |
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diff
changeset
|
3789 if (stopped()) return true; |
fc2281ddce3c
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|
3790 |
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6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
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changeset
|
3791 Node* orig_length = load_array_length(original); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3792 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
3793 Node* klass_node = load_klass_from_mirror(array_type_mirror, false, NULL, 0); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3794 klass_node = null_check(klass_node); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3795 |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3796 RegionNode* bailout = new (C) RegionNode(1); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3797 record_for_igvn(bailout); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3798 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3799 // Despite the generic type of Arrays.copyOf, the mirror might be int, int[], etc. |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3800 // Bail out if that is so. |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3801 Node* not_objArray = generate_non_objArray_guard(klass_node, bailout); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3802 if (not_objArray != NULL) { |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3803 // Improve the klass node's type from the new optimistic assumption: |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3804 ciKlass* ak = ciArrayKlass::make(env()->Object_klass()); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3805 const Type* akls = TypeKlassPtr::make(TypePtr::NotNull, ak, 0/*offset*/); |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3806 Node* cast = new (C) CastPPNode(klass_node, akls); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3807 cast->init_req(0, control()); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3808 klass_node = _gvn.transform(cast); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3809 } |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3810 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3811 // Bail out if either start or end is negative. |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3812 generate_negative_guard(start, bailout, &start); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3813 generate_negative_guard(end, bailout, &end); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3814 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3815 Node* length = end; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3816 if (_gvn.type(start) != TypeInt::ZERO) { |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3817 length = _gvn.transform(new (C) SubINode(end, start)); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3818 } |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3819 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3820 // Bail out if length is negative. |
6180
eeb819cf36e5
7174363: Arrays.copyOfRange leads to VM crash with -Xcomp -server if executed by testing framework
roland
parents:
6143
diff
changeset
|
3821 // Without this the new_array would throw |
eeb819cf36e5
7174363: Arrays.copyOfRange leads to VM crash with -Xcomp -server if executed by testing framework
roland
parents:
6143
diff
changeset
|
3822 // NegativeArraySizeException but IllegalArgumentException is what |
eeb819cf36e5
7174363: Arrays.copyOfRange leads to VM crash with -Xcomp -server if executed by testing framework
roland
parents:
6143
diff
changeset
|
3823 // should be thrown |
eeb819cf36e5
7174363: Arrays.copyOfRange leads to VM crash with -Xcomp -server if executed by testing framework
roland
parents:
6143
diff
changeset
|
3824 generate_negative_guard(length, bailout, &length); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3825 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3826 if (bailout->req() > 1) { |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3827 PreserveJVMState pjvms(this); |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3828 set_control(_gvn.transform(bailout)); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3829 uncommon_trap(Deoptimization::Reason_intrinsic, |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3830 Deoptimization::Action_maybe_recompile); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3831 } |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3832 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3833 if (!stopped()) { |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3834 // How many elements will we copy from the original? |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3835 // The answer is MinI(orig_length - start, length). |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3836 Node* orig_tail = _gvn.transform(new (C) SubINode(orig_length, start)); |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3837 Node* moved = generate_min_max(vmIntrinsics::_min, orig_tail, length); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3838 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3839 newcopy = new_array(klass_node, length, 0); // no argments to push |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3840 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3841 // Generate a direct call to the right arraycopy function(s). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3842 // We know the copy is disjoint but we might not know if the |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3843 // oop stores need checking. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3844 // Extreme case: Arrays.copyOf((Integer[])x, 10, String[].class). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3845 // This will fail a store-check if x contains any non-nulls. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3846 bool disjoint_bases = true; |
6180
eeb819cf36e5
7174363: Arrays.copyOfRange leads to VM crash with -Xcomp -server if executed by testing framework
roland
parents:
6143
diff
changeset
|
3847 // if start > orig_length then the length of the copy may be |
eeb819cf36e5
7174363: Arrays.copyOfRange leads to VM crash with -Xcomp -server if executed by testing framework
roland
parents:
6143
diff
changeset
|
3848 // negative. |
eeb819cf36e5
7174363: Arrays.copyOfRange leads to VM crash with -Xcomp -server if executed by testing framework
roland
parents:
6143
diff
changeset
|
3849 bool length_never_negative = !is_copyOfRange; |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3850 generate_arraycopy(TypeAryPtr::OOPS, T_OBJECT, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3851 original, start, newcopy, intcon(0), moved, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
3852 disjoint_bases, length_never_negative); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
3853 } |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3854 } // original reexecute is set back here |
0 | 3855 |
3856 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3857 if (!stopped()) { |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3858 set_result(newcopy); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3859 } |
0 | 3860 return true; |
3861 } | |
3862 | |
3863 | |
3864 //----------------------generate_virtual_guard--------------------------- | |
3865 // Helper for hashCode and clone. Peeks inside the vtable to avoid a call. | |
3866 Node* LibraryCallKit::generate_virtual_guard(Node* obj_klass, | |
3867 RegionNode* slow_region) { | |
3868 ciMethod* method = callee(); | |
3869 int vtable_index = method->vtable_index(); | |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12190
diff
changeset
|
3870 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12190
diff
changeset
|
3871 err_msg_res("bad index %d", vtable_index)); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
3872 // Get the Method* out of the appropriate vtable entry. |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
3873 int entry_offset = (InstanceKlass::vtable_start_offset() + |
0 | 3874 vtable_index*vtableEntry::size()) * wordSize + |
3875 vtableEntry::method_offset_in_bytes(); | |
3876 Node* entry_addr = basic_plus_adr(obj_klass, entry_offset); | |
6888
cfe522e6461c
8000623: tools/javac/Diagnostics/6769027/T6769027.java crashes in PSPromotionManager::copy_to_survivor_space
kvn
parents:
6853
diff
changeset
|
3877 Node* target_call = make_load(NULL, entry_addr, TypePtr::NOTNULL, T_ADDRESS); |
0 | 3878 |
3879 // Compare the target method with the expected method (e.g., Object.hashCode). | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
3880 const TypePtr* native_call_addr = TypeMetadataPtr::make(method); |
0 | 3881 |
3882 Node* native_call = makecon(native_call_addr); | |
11080
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
3883 Node* chk_native = _gvn.transform(new(C) CmpPNode(target_call, native_call)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
3884 Node* test_native = _gvn.transform(new(C) BoolNode(chk_native, BoolTest::ne)); |
0 | 3885 |
3886 return generate_slow_guard(test_native, slow_region); | |
3887 } | |
3888 | |
3889 //-----------------------generate_method_call---------------------------- | |
3890 // Use generate_method_call to make a slow-call to the real | |
3891 // method if the fast path fails. An alternative would be to | |
3892 // use a stub like OptoRuntime::slow_arraycopy_Java. | |
3893 // This only works for expanding the current library call, | |
3894 // not another intrinsic. (E.g., don't use this for making an | |
3895 // arraycopy call inside of the copyOf intrinsic.) | |
3896 CallJavaNode* | |
3897 LibraryCallKit::generate_method_call(vmIntrinsics::ID method_id, bool is_virtual, bool is_static) { | |
3898 // When compiling the intrinsic method itself, do not use this technique. | |
3899 guarantee(callee() != C->method(), "cannot make slow-call to self"); | |
3900 | |
3901 ciMethod* method = callee(); | |
3902 // ensure the JVMS we have will be correct for this call | |
3903 guarantee(method_id == method->intrinsic_id(), "must match"); | |
3904 | |
3905 const TypeFunc* tf = TypeFunc::make(method); | |
3906 CallJavaNode* slow_call; | |
3907 if (is_static) { | |
3908 assert(!is_virtual, ""); | |
10278 | 3909 slow_call = new(C) CallStaticJavaNode(C, tf, |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3910 SharedRuntime::get_resolve_static_call_stub(), |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3911 method, bci()); |
0 | 3912 } else if (is_virtual) { |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3913 null_check_receiver(); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
3914 int vtable_index = Method::invalid_vtable_index; |
0 | 3915 if (UseInlineCaches) { |
3916 // Suppress the vtable call | |
3917 } else { | |
3918 // hashCode and clone are not a miranda methods, | |
3919 // so the vtable index is fixed. | |
3920 // No need to use the linkResolver to get it. | |
3921 vtable_index = method->vtable_index(); | |
12264
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12190
diff
changeset
|
3922 assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, |
b2e698d2276c
8014013: CallInfo structure no longer accurately reports the result of a LinkResolver operation
drchase
parents:
12190
diff
changeset
|
3923 err_msg_res("bad index %d", vtable_index)); |
0 | 3924 } |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3925 slow_call = new(C) CallDynamicJavaNode(tf, |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3926 SharedRuntime::get_resolve_virtual_call_stub(), |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3927 method, vtable_index, bci()); |
0 | 3928 } else { // neither virtual nor static: opt_virtual |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3929 null_check_receiver(); |
10278 | 3930 slow_call = new(C) CallStaticJavaNode(C, tf, |
0 | 3931 SharedRuntime::get_resolve_opt_virtual_call_stub(), |
3932 method, bci()); | |
3933 slow_call->set_optimized_virtual(true); | |
3934 } | |
3935 set_arguments_for_java_call(slow_call); | |
3936 set_edges_for_java_call(slow_call); | |
3937 return slow_call; | |
3938 } | |
3939 | |
3940 | |
3941 //------------------------------inline_native_hashcode-------------------- | |
3942 // Build special case code for calls to hashCode on an object. | |
3943 bool LibraryCallKit::inline_native_hashcode(bool is_virtual, bool is_static) { | |
3944 assert(is_static == callee()->is_static(), "correct intrinsic selection"); | |
3945 assert(!(is_virtual && is_static), "either virtual, special, or static"); | |
3946 | |
3947 enum { _slow_path = 1, _fast_path, _null_path, PATH_LIMIT }; | |
3948 | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3949 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3950 PhiNode* result_val = new(C) PhiNode(result_reg, |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3951 TypeInt::INT); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3952 PhiNode* result_io = new(C) PhiNode(result_reg, Type::ABIO); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3953 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3954 TypePtr::BOTTOM); |
0 | 3955 Node* obj = NULL; |
3956 if (!is_static) { | |
3957 // Check for hashing null object | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3958 obj = null_check_receiver(); |
0 | 3959 if (stopped()) return true; // unconditionally null |
3960 result_reg->init_req(_null_path, top()); | |
3961 result_val->init_req(_null_path, top()); | |
3962 } else { | |
3963 // Do a null check, and return zero if null. | |
3964 // System.identityHashCode(null) == 0 | |
3965 obj = argument(0); | |
3966 Node* null_ctl = top(); | |
3967 obj = null_check_oop(obj, &null_ctl); | |
3968 result_reg->init_req(_null_path, null_ctl); | |
3969 result_val->init_req(_null_path, _gvn.intcon(0)); | |
3970 } | |
3971 | |
3972 // Unconditionally null? Then return right away. | |
3973 if (stopped()) { | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3974 set_control( result_reg->in(_null_path)); |
0 | 3975 if (!stopped()) |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3976 set_result(result_val->in(_null_path)); |
0 | 3977 return true; |
3978 } | |
3979 | |
3980 // After null check, get the object's klass. | |
3981 Node* obj_klass = load_object_klass(obj); | |
3982 | |
3983 // This call may be virtual (invokevirtual) or bound (invokespecial). | |
3984 // For each case we generate slightly different code. | |
3985 | |
3986 // We only go to the fast case code if we pass a number of guards. The | |
3987 // paths which do not pass are accumulated in the slow_region. | |
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3988 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 3989 record_for_igvn(slow_region); |
3990 | |
3991 // If this is a virtual call, we generate a funny guard. We pull out | |
3992 // the vtable entry corresponding to hashCode() from the target object. | |
3993 // If the target method which we are calling happens to be the native | |
3994 // Object hashCode() method, we pass the guard. We do not need this | |
3995 // guard for non-virtual calls -- the caller is known to be the native | |
3996 // Object hashCode(). | |
3997 if (is_virtual) { | |
3998 generate_virtual_guard(obj_klass, slow_region); | |
3999 } | |
4000 | |
4001 // Get the header out of the object, use LoadMarkNode when available | |
4002 Node* header_addr = basic_plus_adr(obj, oopDesc::mark_offset_in_bytes()); | |
1609 | 4003 Node* header = make_load(control(), header_addr, TypeX_X, TypeX_X->basic_type()); |
0 | 4004 |
4005 // Test the header to see if it is unlocked. | |
4006 Node *lock_mask = _gvn.MakeConX(markOopDesc::biased_lock_mask_in_place); | |
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4007 Node *lmasked_header = _gvn.transform(new (C) AndXNode(header, lock_mask)); |
0 | 4008 Node *unlocked_val = _gvn.MakeConX(markOopDesc::unlocked_value); |
11080
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|
4009 Node *chk_unlocked = _gvn.transform(new (C) CmpXNode( lmasked_header, unlocked_val)); |
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4010 Node *test_unlocked = _gvn.transform(new (C) BoolNode( chk_unlocked, BoolTest::ne)); |
0 | 4011 |
4012 generate_slow_guard(test_unlocked, slow_region); | |
4013 | |
4014 // Get the hash value and check to see that it has been properly assigned. | |
4015 // We depend on hash_mask being at most 32 bits and avoid the use of | |
4016 // hash_mask_in_place because it could be larger than 32 bits in a 64-bit | |
4017 // vm: see markOop.hpp. | |
4018 Node *hash_mask = _gvn.intcon(markOopDesc::hash_mask); | |
4019 Node *hash_shift = _gvn.intcon(markOopDesc::hash_shift); | |
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|
4020 Node *hshifted_header= _gvn.transform(new (C) URShiftXNode(header, hash_shift)); |
0 | 4021 // This hack lets the hash bits live anywhere in the mark object now, as long |
605 | 4022 // as the shift drops the relevant bits into the low 32 bits. Note that |
0 | 4023 // Java spec says that HashCode is an int so there's no point in capturing |
4024 // an 'X'-sized hashcode (32 in 32-bit build or 64 in 64-bit build). | |
4025 hshifted_header = ConvX2I(hshifted_header); | |
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4026 Node *hash_val = _gvn.transform(new (C) AndINode(hshifted_header, hash_mask)); |
0 | 4027 |
4028 Node *no_hash_val = _gvn.intcon(markOopDesc::no_hash); | |
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4029 Node *chk_assigned = _gvn.transform(new (C) CmpINode( hash_val, no_hash_val)); |
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4030 Node *test_assigned = _gvn.transform(new (C) BoolNode( chk_assigned, BoolTest::eq)); |
0 | 4031 |
4032 generate_slow_guard(test_assigned, slow_region); | |
4033 | |
4034 Node* init_mem = reset_memory(); | |
4035 // fill in the rest of the null path: | |
4036 result_io ->init_req(_null_path, i_o()); | |
4037 result_mem->init_req(_null_path, init_mem); | |
4038 | |
4039 result_val->init_req(_fast_path, hash_val); | |
4040 result_reg->init_req(_fast_path, control()); | |
4041 result_io ->init_req(_fast_path, i_o()); | |
4042 result_mem->init_req(_fast_path, init_mem); | |
4043 | |
4044 // Generate code for the slow case. We make a call to hashCode(). | |
4045 set_control(_gvn.transform(slow_region)); | |
4046 if (!stopped()) { | |
4047 // No need for PreserveJVMState, because we're using up the present state. | |
4048 set_all_memory(init_mem); | |
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4049 vmIntrinsics::ID hashCode_id = is_static ? vmIntrinsics::_identityHashCode : vmIntrinsics::_hashCode; |
0 | 4050 CallJavaNode* slow_call = generate_method_call(hashCode_id, is_virtual, is_static); |
4051 Node* slow_result = set_results_for_java_call(slow_call); | |
4052 // this->control() comes from set_results_for_java_call | |
4053 result_reg->init_req(_slow_path, control()); | |
4054 result_val->init_req(_slow_path, slow_result); | |
4055 result_io ->set_req(_slow_path, i_o()); | |
4056 result_mem ->set_req(_slow_path, reset_memory()); | |
4057 } | |
4058 | |
4059 // Return the combined state. | |
4060 set_i_o( _gvn.transform(result_io) ); | |
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4061 set_all_memory( _gvn.transform(result_mem)); |
7194
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|
4062 |
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|
4063 set_result(result_reg, result_val); |
0 | 4064 return true; |
4065 } | |
4066 | |
4067 //---------------------------inline_native_getClass---------------------------- | |
7194
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4068 // public final native Class<?> java.lang.Object.getClass(); |
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|
4069 // |
605 | 4070 // Build special case code for calls to getClass on an object. |
0 | 4071 bool LibraryCallKit::inline_native_getClass() { |
7194
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4072 Node* obj = null_check_receiver(); |
0 | 4073 if (stopped()) return true; |
7194
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|
4074 set_result(load_mirror_from_klass(load_object_klass(obj))); |
0 | 4075 return true; |
4076 } | |
4077 | |
4078 //-----------------inline_native_Reflection_getCallerClass--------------------- | |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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4079 // public static native Class<?> sun.reflect.Reflection.getCallerClass(); |
7194
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4080 // |
0 | 4081 // In the presence of deep enough inlining, getCallerClass() becomes a no-op. |
4082 // | |
8866
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4083 // NOTE: This code must perform the same logic as JVM_GetCallerClass |
16885e702c88
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4084 // in that it must skip particular security frames and checks for |
16885e702c88
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|
4085 // caller sensitive methods. |
0 | 4086 bool LibraryCallKit::inline_native_Reflection_getCallerClass() { |
4087 #ifndef PRODUCT | |
12295 | 4088 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { |
0 | 4089 tty->print_cr("Attempting to inline sun.reflect.Reflection.getCallerClass"); |
4090 } | |
4091 #endif | |
4092 | |
4093 if (!jvms()->has_method()) { | |
4094 #ifndef PRODUCT | |
12295 | 4095 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { |
0 | 4096 tty->print_cr(" Bailing out because intrinsic was inlined at top level"); |
4097 } | |
4098 #endif | |
4099 return false; | |
4100 } | |
4101 | |
4102 // Walk back up the JVM state to find the caller at the required | |
8866
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|
4103 // depth. |
16885e702c88
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|
4104 JVMState* caller_jvms = jvms(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4105 |
16885e702c88
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|
4106 // Cf. JVM_GetCallerClass |
16885e702c88
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|
4107 // NOTE: Start the loop at depth 1 because the current JVM state does |
16885e702c88
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|
4108 // not include the Reflection.getCallerClass() frame. |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4109 for (int n = 1; caller_jvms != NULL; caller_jvms = caller_jvms->caller(), n++) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4110 ciMethod* m = caller_jvms->method(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
4111 switch (n) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4112 case 0: |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4113 fatal("current JVM state does not include the Reflection.getCallerClass frame"); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4114 break; |
16885e702c88
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|
4115 case 1: |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4116 // Frame 0 and 1 must be caller sensitive (see JVM_GetCallerClass). |
16885e702c88
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|
4117 if (!m->caller_sensitive()) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4118 #ifndef PRODUCT |
12295 | 4119 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { |
8866
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|
4120 tty->print_cr(" Bailing out: CallerSensitive annotation expected at frame %d", n); |
16885e702c88
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|
4121 } |
16885e702c88
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diff
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|
4122 #endif |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
4123 return false; // bail-out; let JVM_GetCallerClass do the work |
0 | 4124 } |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4125 break; |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
4126 default: |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4127 if (!m->is_ignored_by_security_stack_walk()) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4128 // We have reached the desired frame; return the holder class. |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
4129 // Acquire method holder as java.lang.Class and push as constant. |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
4130 ciInstanceKlass* caller_klass = caller_jvms->method()->holder(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4131 ciInstance* caller_mirror = caller_klass->java_mirror(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4132 set_result(makecon(TypeInstPtr::make(caller_mirror))); |
16885e702c88
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|
4133 |
0 | 4134 #ifndef PRODUCT |
12295 | 4135 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { |
8866
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|
4136 tty->print_cr(" Succeeded: caller = %d) %s.%s, JVMS depth = %d", n, caller_klass->name()->as_utf8(), caller_jvms->method()->name()->as_utf8(), jvms()->depth()); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4137 tty->print_cr(" JVM state at this point:"); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4138 for (int i = jvms()->depth(), n = 1; i >= 1; i--, n++) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
4139 ciMethod* m = jvms()->of_depth(i)->method(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4140 tty->print_cr(" %d) %s.%s", n, m->holder()->name()->as_utf8(), m->name()->as_utf8()); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4141 } |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
4142 } |
0 | 4143 #endif |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
4144 return true; |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
4145 } |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
twisti
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diff
changeset
|
4146 break; |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
4147 } |
0 | 4148 } |
4149 | |
4150 #ifndef PRODUCT | |
12295 | 4151 if ((C->print_intrinsics() || C->print_inlining()) && Verbose) { |
8866
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changeset
|
4152 tty->print_cr(" Bailing out because caller depth exceeded inlining depth = %d", jvms()->depth()); |
0 | 4153 tty->print_cr(" JVM state at this point:"); |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
4154 for (int i = jvms()->depth(), n = 1; i >= 1; i--, n++) { |
7194
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|
4155 ciMethod* m = jvms()->of_depth(i)->method(); |
8866
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4156 tty->print_cr(" %d) %s.%s", n, m->holder()->name()->as_utf8(), m->name()->as_utf8()); |
0 | 4157 } |
4158 } | |
4159 #endif | |
8866
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|
4160 |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
4161 return false; // bail-out; let JVM_GetCallerClass do the work |
0 | 4162 } |
4163 | |
4164 bool LibraryCallKit::inline_fp_conversions(vmIntrinsics::ID id) { | |
7194
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|
4165 Node* arg = argument(0); |
beebba0acc11
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|
4166 Node* result; |
0 | 4167 |
4168 switch (id) { | |
7194
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|
4169 case vmIntrinsics::_floatToRawIntBits: result = new (C) MoveF2INode(arg); break; |
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|
4170 case vmIntrinsics::_intBitsToFloat: result = new (C) MoveI2FNode(arg); break; |
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|
4171 case vmIntrinsics::_doubleToRawLongBits: result = new (C) MoveD2LNode(arg); break; |
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|
4172 case vmIntrinsics::_longBitsToDouble: result = new (C) MoveL2DNode(arg); break; |
0 | 4173 |
4174 case vmIntrinsics::_doubleToLongBits: { | |
4175 // two paths (plus control) merge in a wood | |
6804
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changeset
|
4176 RegionNode *r = new (C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
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diff
changeset
|
4177 Node *phi = new (C) PhiNode(r, TypeLong::LONG); |
e626685e9f6c
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|
4178 |
7194
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|
4179 Node *cmpisnan = _gvn.transform(new (C) CmpDNode(arg, arg)); |
0 | 4180 // Build the boolean node |
7194
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changeset
|
4181 Node *bolisnan = _gvn.transform(new (C) BoolNode(cmpisnan, BoolTest::ne)); |
0 | 4182 |
4183 // Branch either way. | |
4184 // NaN case is less traveled, which makes all the difference. | |
4185 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
4186 Node *opt_isnan = _gvn.transform(ifisnan); | |
4187 assert( opt_isnan->is_If(), "Expect an IfNode"); | |
4188 IfNode *opt_ifisnan = (IfNode*)opt_isnan; | |
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|
4189 Node *iftrue = _gvn.transform(new (C) IfTrueNode(opt_ifisnan)); |
0 | 4190 |
4191 set_control(iftrue); | |
4192 | |
4193 static const jlong nan_bits = CONST64(0x7ff8000000000000); | |
4194 Node *slow_result = longcon(nan_bits); // return NaN | |
4195 phi->init_req(1, _gvn.transform( slow_result )); | |
4196 r->init_req(1, iftrue); | |
4197 | |
4198 // Else fall through | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4199 Node *iffalse = _gvn.transform(new (C) IfFalseNode(opt_ifisnan)); |
0 | 4200 set_control(iffalse); |
4201 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4202 phi->init_req(2, _gvn.transform(new (C) MoveD2LNode(arg))); |
0 | 4203 r->init_req(2, iffalse); |
4204 | |
4205 // Post merge | |
4206 set_control(_gvn.transform(r)); | |
4207 record_for_igvn(r); | |
4208 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4209 C->set_has_split_ifs(true); // Has chance for split-if optimization |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4210 result = phi; |
0 | 4211 assert(result->bottom_type()->isa_long(), "must be"); |
4212 break; | |
4213 } | |
4214 | |
4215 case vmIntrinsics::_floatToIntBits: { | |
4216 // two paths (plus control) merge in a wood | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4217 RegionNode *r = new (C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4218 Node *phi = new (C) PhiNode(r, TypeInt::INT); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4219 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4220 Node *cmpisnan = _gvn.transform(new (C) CmpFNode(arg, arg)); |
0 | 4221 // Build the boolean node |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4222 Node *bolisnan = _gvn.transform(new (C) BoolNode(cmpisnan, BoolTest::ne)); |
0 | 4223 |
4224 // Branch either way. | |
4225 // NaN case is less traveled, which makes all the difference. | |
4226 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
4227 Node *opt_isnan = _gvn.transform(ifisnan); | |
4228 assert( opt_isnan->is_If(), "Expect an IfNode"); | |
4229 IfNode *opt_ifisnan = (IfNode*)opt_isnan; | |
11080
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
4230 Node *iftrue = _gvn.transform(new (C) IfTrueNode(opt_ifisnan)); |
0 | 4231 |
4232 set_control(iftrue); | |
4233 | |
4234 static const jint nan_bits = 0x7fc00000; | |
4235 Node *slow_result = makecon(TypeInt::make(nan_bits)); // return NaN | |
4236 phi->init_req(1, _gvn.transform( slow_result )); | |
4237 r->init_req(1, iftrue); | |
4238 | |
4239 // Else fall through | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4240 Node *iffalse = _gvn.transform(new (C) IfFalseNode(opt_ifisnan)); |
0 | 4241 set_control(iffalse); |
4242 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4243 phi->init_req(2, _gvn.transform(new (C) MoveF2INode(arg))); |
0 | 4244 r->init_req(2, iffalse); |
4245 | |
4246 // Post merge | |
4247 set_control(_gvn.transform(r)); | |
4248 record_for_igvn(r); | |
4249 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4250 C->set_has_split_ifs(true); // Has chance for split-if optimization |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4251 result = phi; |
0 | 4252 assert(result->bottom_type()->isa_int(), "must be"); |
4253 break; | |
4254 } | |
4255 | |
4256 default: | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4257 fatal_unexpected_iid(id); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4258 break; |
0 | 4259 } |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4260 set_result(_gvn.transform(result)); |
0 | 4261 return true; |
4262 } | |
4263 | |
4264 #ifdef _LP64 | |
4265 #define XTOP ,top() /*additional argument*/ | |
4266 #else //_LP64 | |
4267 #define XTOP /*no additional argument*/ | |
4268 #endif //_LP64 | |
4269 | |
4270 //----------------------inline_unsafe_copyMemory------------------------- | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4271 // public native void sun.misc.Unsafe.copyMemory(Object srcBase, long srcOffset, Object destBase, long destOffset, long bytes); |
0 | 4272 bool LibraryCallKit::inline_unsafe_copyMemory() { |
4273 if (callee()->is_static()) return false; // caller must have the capability! | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4274 null_check_receiver(); // null-check receiver |
0 | 4275 if (stopped()) return true; |
4276 | |
4277 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
4278 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4279 Node* src_ptr = argument(1); // type: oop |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4280 Node* src_off = ConvL2X(argument(2)); // type: long |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4281 Node* dst_ptr = argument(4); // type: oop |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4282 Node* dst_off = ConvL2X(argument(5)); // type: long |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4283 Node* size = ConvL2X(argument(7)); // type: long |
0 | 4284 |
4285 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
4286 "fieldOffset must be byte-scaled"); | |
4287 | |
4288 Node* src = make_unsafe_address(src_ptr, src_off); | |
4289 Node* dst = make_unsafe_address(dst_ptr, dst_off); | |
4290 | |
4291 // Conservatively insert a memory barrier on all memory slices. | |
4292 // Do not let writes of the copy source or destination float below the copy. | |
4293 insert_mem_bar(Op_MemBarCPUOrder); | |
4294 | |
4295 // Call it. Note that the length argument is not scaled. | |
4296 make_runtime_call(RC_LEAF|RC_NO_FP, | |
4297 OptoRuntime::fast_arraycopy_Type(), | |
4298 StubRoutines::unsafe_arraycopy(), | |
4299 "unsafe_arraycopy", | |
4300 TypeRawPtr::BOTTOM, | |
4301 src, dst, size XTOP); | |
4302 | |
4303 // Do not let reads of the copy destination float above the copy. | |
4304 insert_mem_bar(Op_MemBarCPUOrder); | |
4305 | |
4306 return true; | |
4307 } | |
4308 | |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4309 //------------------------clone_coping----------------------------------- |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4310 // Helper function for inline_native_clone. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4311 void LibraryCallKit::copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array, bool card_mark) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4312 assert(obj_size != NULL, ""); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4313 Node* raw_obj = alloc_obj->in(1); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4314 assert(alloc_obj->is_CheckCastPP() && raw_obj->is_Proj() && raw_obj->in(0)->is_Allocate(), ""); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4315 |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4316 AllocateNode* alloc = NULL; |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4317 if (ReduceBulkZeroing) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4318 // We will be completely responsible for initializing this object - |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4319 // mark Initialize node as complete. |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4320 alloc = AllocateNode::Ideal_allocation(alloc_obj, &_gvn); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4321 // The object was just allocated - there should be no any stores! |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4322 guarantee(alloc != NULL && alloc->maybe_set_complete(&_gvn), ""); |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4323 // Mark as complete_with_arraycopy so that on AllocateNode |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4324 // expansion, we know this AllocateNode is initialized by an array |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4325 // copy and a StoreStore barrier exists after the array copy. |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4326 alloc->initialization()->set_complete_with_arraycopy(); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4327 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4328 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4329 // Copy the fastest available way. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4330 // TODO: generate fields copies for small objects instead. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4331 Node* src = obj; |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4332 Node* dest = alloc_obj; |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4333 Node* size = _gvn.transform(obj_size); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4334 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4335 // Exclude the header but include array length to copy by 8 bytes words. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4336 // Can't use base_offset_in_bytes(bt) since basic type is unknown. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4337 int base_off = is_array ? arrayOopDesc::length_offset_in_bytes() : |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4338 instanceOopDesc::base_offset_in_bytes(); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4339 // base_off: |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4340 // 8 - 32-bit VM |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4341 // 12 - 64-bit VM, compressed klass |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4342 // 16 - 64-bit VM, normal klass |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4343 if (base_off % BytesPerLong != 0) { |
12226
7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
ehelin
parents:
12169
diff
changeset
|
4344 assert(UseCompressedClassPointers, ""); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4345 if (is_array) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4346 // Exclude length to copy by 8 bytes words. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4347 base_off += sizeof(int); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4348 } else { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4349 // Include klass to copy by 8 bytes words. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4350 base_off = instanceOopDesc::klass_offset_in_bytes(); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4351 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4352 assert(base_off % BytesPerLong == 0, "expect 8 bytes alignment"); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4353 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4354 src = basic_plus_adr(src, base_off); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4355 dest = basic_plus_adr(dest, base_off); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4356 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4357 // Compute the length also, if needed: |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4358 Node* countx = size; |
11080
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
4359 countx = _gvn.transform(new (C) SubXNode(countx, MakeConX(base_off))); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
4360 countx = _gvn.transform(new (C) URShiftXNode(countx, intcon(LogBytesPerLong) )); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4361 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4362 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM; |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4363 bool disjoint_bases = true; |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4364 generate_unchecked_arraycopy(raw_adr_type, T_LONG, disjoint_bases, |
2324 | 4365 src, NULL, dest, NULL, countx, |
4366 /*dest_uninitialized*/true); | |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4367 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4368 // If necessary, emit some card marks afterwards. (Non-arrays only.) |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4369 if (card_mark) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4370 assert(!is_array, ""); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4371 // Put in store barrier for any and all oops we are sticking |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4372 // into this object. (We could avoid this if we could prove |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4373 // that the object type contains no oop fields at all.) |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4374 Node* no_particular_value = NULL; |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4375 Node* no_particular_field = NULL; |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4376 int raw_adr_idx = Compile::AliasIdxRaw; |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4377 post_barrier(control(), |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4378 memory(raw_adr_type), |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4379 alloc_obj, |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4380 no_particular_field, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4381 raw_adr_idx, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4382 no_particular_value, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4383 T_OBJECT, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4384 false); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4385 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4386 |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4387 // Do not let reads from the cloned object float above the arraycopy. |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4388 if (alloc != NULL) { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4389 // Do not let stores that initialize this object be reordered with |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4390 // a subsequent store that would make this object accessible by |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4391 // other threads. |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4392 // Record what AllocateNode this StoreStore protects so that |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4393 // escape analysis can go from the MemBarStoreStoreNode to the |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4394 // AllocateNode and eliminate the MemBarStoreStoreNode if possible |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4395 // based on the escape status of the AllocateNode. |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4396 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out(AllocateNode::RawAddress)); |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4397 } else { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4398 insert_mem_bar(Op_MemBarCPUOrder); |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4399 } |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4400 } |
0 | 4401 |
4402 //------------------------inline_native_clone---------------------------- | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4403 // protected native Object java.lang.Object.clone(); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4404 // |
0 | 4405 // Here are the simple edge cases: |
4406 // null receiver => normal trap | |
4407 // virtual and clone was overridden => slow path to out-of-line clone | |
4408 // not cloneable or finalizer => slow path to out-of-line Object.clone | |
4409 // | |
4410 // The general case has two steps, allocation and copying. | |
4411 // Allocation has two cases, and uses GraphKit::new_instance or new_array. | |
4412 // | |
4413 // Copying also has two cases, oop arrays and everything else. | |
4414 // Oop arrays use arrayof_oop_arraycopy (same as System.arraycopy). | |
4415 // Everything else uses the tight inline loop supplied by CopyArrayNode. | |
4416 // | |
4417 // These steps fold up nicely if and when the cloned object's klass | |
4418 // can be sharply typed as an object array, a type array, or an instance. | |
4419 // | |
4420 bool LibraryCallKit::inline_native_clone(bool is_virtual) { | |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4421 PhiNode* result_val; |
0 | 4422 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4423 // Set the reexecute bit for the interpreter to reexecute |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4424 // the bytecode that invokes Object.clone if deoptimization happens. |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4425 { PreserveReexecuteState preexecs(this); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4426 jvms()->set_should_reexecute(true); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4427 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4428 Node* obj = null_check_receiver(); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4429 if (stopped()) return true; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4430 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4431 Node* obj_klass = load_object_klass(obj); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4432 const TypeKlassPtr* tklass = _gvn.type(obj_klass)->isa_klassptr(); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4433 const TypeOopPtr* toop = ((tklass != NULL) |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4434 ? tklass->as_instance_type() |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4435 : TypeInstPtr::NOTNULL); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4436 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4437 // Conservatively insert a memory barrier on all memory slices. |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4438 // Do not let writes into the original float below the clone. |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4439 insert_mem_bar(Op_MemBarCPUOrder); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4440 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4441 // paths into result_reg: |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4442 enum { |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4443 _slow_path = 1, // out-of-line call to clone method (virtual or not) |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4444 _objArray_path, // plain array allocation, plus arrayof_oop_arraycopy |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4445 _array_path, // plain array allocation, plus arrayof_long_arraycopy |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4446 _instance_path, // plain instance allocation, plus arrayof_long_arraycopy |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4447 PATH_LIMIT |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4448 }; |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4449 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4450 result_val = new(C) PhiNode(result_reg, |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4451 TypeInstPtr::NOTNULL); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4452 PhiNode* result_i_o = new(C) PhiNode(result_reg, Type::ABIO); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4453 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4454 TypePtr::BOTTOM); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4455 record_for_igvn(result_reg); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4456 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4457 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4458 int raw_adr_idx = Compile::AliasIdxRaw; |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4459 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4460 Node* array_ctl = generate_array_guard(obj_klass, (RegionNode*)NULL); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4461 if (array_ctl != NULL) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4462 // It's an array. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4463 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4464 set_control(array_ctl); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4465 Node* obj_length = load_array_length(obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4466 Node* obj_size = NULL; |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4467 Node* alloc_obj = new_array(obj_klass, obj_length, 0, &obj_size); // no arguments to push |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4468 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4469 if (!use_ReduceInitialCardMarks()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4470 // If it is an oop array, it requires very special treatment, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4471 // because card marking is required on each card of the array. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4472 Node* is_obja = generate_objArray_guard(obj_klass, (RegionNode*)NULL); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4473 if (is_obja != NULL) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4474 PreserveJVMState pjvms2(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4475 set_control(is_obja); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4476 // Generate a direct call to the right arraycopy function(s). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4477 bool disjoint_bases = true; |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4478 bool length_never_negative = true; |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4479 generate_arraycopy(TypeAryPtr::OOPS, T_OBJECT, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4480 obj, intcon(0), alloc_obj, intcon(0), |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4481 obj_length, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4482 disjoint_bases, length_never_negative); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4483 result_reg->init_req(_objArray_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4484 result_val->init_req(_objArray_path, alloc_obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4485 result_i_o ->set_req(_objArray_path, i_o()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4486 result_mem ->set_req(_objArray_path, reset_memory()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4487 } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4488 } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4489 // Otherwise, there are no card marks to worry about. |
1027
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
986
diff
changeset
|
4490 // (We can dispense with card marks if we know the allocation |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
986
diff
changeset
|
4491 // comes out of eden (TLAB)... In fact, ReduceInitialCardMarks |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
986
diff
changeset
|
4492 // causes the non-eden paths to take compensating steps to |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
986
diff
changeset
|
4493 // simulate a fresh allocation, so that no further |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
986
diff
changeset
|
4494 // card marks are required in compiled code to initialize |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
986
diff
changeset
|
4495 // the object.) |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4496 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4497 if (!stopped()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4498 copy_to_clone(obj, alloc_obj, obj_size, true, false); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4499 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4500 // Present the results of the copy. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4501 result_reg->init_req(_array_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4502 result_val->init_req(_array_path, alloc_obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4503 result_i_o ->set_req(_array_path, i_o()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4504 result_mem ->set_req(_array_path, reset_memory()); |
0 | 4505 } |
4506 } | |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4507 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4508 // We only go to the instance fast case code if we pass a number of guards. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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|
4509 // The paths which do not pass are accumulated in the slow_region. |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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6795
diff
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|
4510 RegionNode* slow_region = new (C) RegionNode(1); |
900
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|
4511 record_for_igvn(slow_region); |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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4512 if (!stopped()) { |
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|
4513 // It's an instance (we did array above). Make the slow-path tests. |
9987d9d5eb0e
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diff
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|
4514 // If this is a virtual call, we generate a funny guard. We grab |
9987d9d5eb0e
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|
4515 // the vtable entry corresponding to clone() from the target object. |
9987d9d5eb0e
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|
4516 // If the target method which we are calling happens to be the |
9987d9d5eb0e
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|
4517 // Object clone() method, we pass the guard. We do not need this |
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|
4518 // guard for non-virtual calls; the caller is known to be the native |
9987d9d5eb0e
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|
4519 // Object clone(). |
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|
4520 if (is_virtual) { |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4521 generate_virtual_guard(obj_klass, slow_region); |
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|
4522 } |
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|
4523 |
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|
4524 // The object must be cloneable and must not have a finalizer. |
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|
4525 // Both of these conditions may be checked in a single test. |
9987d9d5eb0e
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|
4526 // We could optimize the cloneable test further, but we don't care. |
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diff
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|
4527 generate_access_flags_guard(obj_klass, |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4528 // Test both conditions: |
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|
4529 JVM_ACC_IS_CLONEABLE | JVM_ACC_HAS_FINALIZER, |
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|
4530 // Must be cloneable but not finalizer: |
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|
4531 JVM_ACC_IS_CLONEABLE, |
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|
4532 slow_region); |
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|
4533 } |
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|
4534 |
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|
4535 if (!stopped()) { |
900
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|
4536 // It's an instance, and it passed the slow-path tests. |
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|
4537 PreserveJVMState pjvms(this); |
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|
4538 Node* obj_size = NULL; |
3278
66b0e2371912
7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
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2446
diff
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|
4539 Node* alloc_obj = new_instance(obj_klass, NULL, &obj_size); |
900
9987d9d5eb0e
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|
4540 |
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|
4541 copy_to_clone(obj, alloc_obj, obj_size, false, !use_ReduceInitialCardMarks()); |
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|
4542 |
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diff
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|
4543 // Present the results of the slow call. |
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|
4544 result_reg->init_req(_instance_path, control()); |
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|
4545 result_val->init_req(_instance_path, alloc_obj); |
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|
4546 result_i_o ->set_req(_instance_path, i_o()); |
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|
4547 result_mem ->set_req(_instance_path, reset_memory()); |
0 | 4548 } |
4549 | |
900
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|
4550 // Generate code for the slow case. We make a call to clone(). |
9987d9d5eb0e
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|
4551 set_control(_gvn.transform(slow_region)); |
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|
4552 if (!stopped()) { |
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|
4553 PreserveJVMState pjvms(this); |
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|
4554 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_clone, is_virtual); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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|
4555 Node* slow_result = set_results_for_java_call(slow_call); |
9987d9d5eb0e
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cfang
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|
4556 // this->control() comes from set_results_for_java_call |
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cfang
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|
4557 result_reg->init_req(_slow_path, control()); |
9987d9d5eb0e
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|
4558 result_val->init_req(_slow_path, slow_result); |
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|
4559 result_i_o ->set_req(_slow_path, i_o()); |
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cfang
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|
4560 result_mem ->set_req(_slow_path, reset_memory()); |
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diff
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|
4561 } |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
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900
diff
changeset
|
4562 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
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diff
changeset
|
4563 // Return the combined state. |
11080
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
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10405
diff
changeset
|
4564 set_control( _gvn.transform(result_reg)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
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10405
diff
changeset
|
4565 set_i_o( _gvn.transform(result_i_o)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
4566 set_all_memory( _gvn.transform(result_mem)); |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
4567 } // original reexecute is set back here |
beebba0acc11
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twisti
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6894
diff
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|
4568 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
4569 set_result(_gvn.transform(result_val)); |
0 | 4570 return true; |
4571 } | |
4572 | |
4573 //------------------------------basictype2arraycopy---------------------------- | |
4574 address LibraryCallKit::basictype2arraycopy(BasicType t, | |
4575 Node* src_offset, | |
4576 Node* dest_offset, | |
4577 bool disjoint_bases, | |
2324 | 4578 const char* &name, |
4579 bool dest_uninitialized) { | |
0 | 4580 const TypeInt* src_offset_inttype = gvn().find_int_type(src_offset);; |
4581 const TypeInt* dest_offset_inttype = gvn().find_int_type(dest_offset);; | |
4582 | |
4583 bool aligned = false; | |
4584 bool disjoint = disjoint_bases; | |
4585 | |
4586 // if the offsets are the same, we can treat the memory regions as | |
4587 // disjoint, because either the memory regions are in different arrays, | |
4588 // or they are identical (which we can treat as disjoint.) We can also | |
4589 // treat a copy with a destination index less that the source index | |
4590 // as disjoint since a low->high copy will work correctly in this case. | |
4591 if (src_offset_inttype != NULL && src_offset_inttype->is_con() && | |
4592 dest_offset_inttype != NULL && dest_offset_inttype->is_con()) { | |
4593 // both indices are constants | |
4594 int s_offs = src_offset_inttype->get_con(); | |
4595 int d_offs = dest_offset_inttype->get_con(); | |
29
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
4596 int element_size = type2aelembytes(t); |
0 | 4597 aligned = ((arrayOopDesc::base_offset_in_bytes(t) + s_offs * element_size) % HeapWordSize == 0) && |
4598 ((arrayOopDesc::base_offset_in_bytes(t) + d_offs * element_size) % HeapWordSize == 0); | |
4599 if (s_offs >= d_offs) disjoint = true; | |
4600 } else if (src_offset == dest_offset && src_offset != NULL) { | |
4601 // This can occur if the offsets are identical non-constants. | |
4602 disjoint = true; | |
4603 } | |
4604 | |
2446 | 4605 return StubRoutines::select_arraycopy_function(t, aligned, disjoint, name, dest_uninitialized); |
0 | 4606 } |
4607 | |
4608 | |
4609 //------------------------------inline_arraycopy----------------------- | |
7194
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twisti
parents:
6894
diff
changeset
|
4610 // public static native void java.lang.System.arraycopy(Object src, int srcPos, |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4611 // Object dest, int destPos, |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
4612 // int length); |
0 | 4613 bool LibraryCallKit::inline_arraycopy() { |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
4614 // Get the arguments. |
beebba0acc11
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twisti
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6894
diff
changeset
|
4615 Node* src = argument(0); // type: oop |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
4616 Node* src_offset = argument(1); // type: int |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
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|
4617 Node* dest = argument(2); // type: oop |
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twisti
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6894
diff
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|
4618 Node* dest_offset = argument(3); // type: int |
beebba0acc11
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twisti
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6894
diff
changeset
|
4619 Node* length = argument(4); // type: int |
0 | 4620 |
4621 // Compile time checks. If any of these checks cannot be verified at compile time, | |
4622 // we do not make a fast path for this call. Instead, we let the call remain as it | |
4623 // is. The checks we choose to mandate at compile time are: | |
4624 // | |
4625 // (1) src and dest are arrays. | |
7194
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twisti
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6894
diff
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|
4626 const Type* src_type = src->Value(&_gvn); |
0 | 4627 const Type* dest_type = dest->Value(&_gvn); |
7194
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twisti
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diff
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|
4628 const TypeAryPtr* top_src = src_type->isa_aryptr(); |
0 | 4629 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); |
12966 | 4630 |
4631 // Do we have the type of src? | |
4632 bool has_src = (top_src != NULL && top_src->klass() != NULL); | |
4633 // Do we have the type of dest? | |
4634 bool has_dest = (top_dest != NULL && top_dest->klass() != NULL); | |
4635 // Is the type for src from speculation? | |
4636 bool src_spec = false; | |
4637 // Is the type for dest from speculation? | |
4638 bool dest_spec = false; | |
4639 | |
4640 if (!has_src || !has_dest) { | |
4641 // We don't have sufficient type information, let's see if | |
4642 // speculative types can help. We need to have types for both src | |
4643 // and dest so that it pays off. | |
4644 | |
4645 // Do we already have or could we have type information for src | |
4646 bool could_have_src = has_src; | |
4647 // Do we already have or could we have type information for dest | |
4648 bool could_have_dest = has_dest; | |
4649 | |
4650 ciKlass* src_k = NULL; | |
4651 if (!has_src) { | |
4652 src_k = src_type->speculative_type(); | |
4653 if (src_k != NULL && src_k->is_array_klass()) { | |
4654 could_have_src = true; | |
4655 } | |
4656 } | |
4657 | |
4658 ciKlass* dest_k = NULL; | |
4659 if (!has_dest) { | |
4660 dest_k = dest_type->speculative_type(); | |
4661 if (dest_k != NULL && dest_k->is_array_klass()) { | |
4662 could_have_dest = true; | |
4663 } | |
4664 } | |
4665 | |
4666 if (could_have_src && could_have_dest) { | |
4667 // This is going to pay off so emit the required guards | |
4668 if (!has_src) { | |
4669 src = maybe_cast_profiled_obj(src, src_k); | |
4670 src_type = _gvn.type(src); | |
4671 top_src = src_type->isa_aryptr(); | |
4672 has_src = (top_src != NULL && top_src->klass() != NULL); | |
4673 src_spec = true; | |
4674 } | |
4675 if (!has_dest) { | |
4676 dest = maybe_cast_profiled_obj(dest, dest_k); | |
4677 dest_type = _gvn.type(dest); | |
4678 top_dest = dest_type->isa_aryptr(); | |
4679 has_dest = (top_dest != NULL && top_dest->klass() != NULL); | |
4680 dest_spec = true; | |
4681 } | |
4682 } | |
4683 } | |
4684 | |
4685 if (!has_src || !has_dest) { | |
0 | 4686 // Conservatively insert a memory barrier on all memory slices. |
4687 // Do not let writes into the source float below the arraycopy. | |
4688 insert_mem_bar(Op_MemBarCPUOrder); | |
4689 | |
4690 // Call StubRoutines::generic_arraycopy stub. | |
4691 generate_arraycopy(TypeRawPtr::BOTTOM, T_CONFLICT, | |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
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|
4692 src, src_offset, dest, dest_offset, length); |
0 | 4693 |
4694 // Do not let reads from the destination float above the arraycopy. | |
4695 // Since we cannot type the arrays, we don't know which slices | |
4696 // might be affected. We could restrict this barrier only to those | |
4697 // memory slices which pertain to array elements--but don't bother. | |
4698 if (!InsertMemBarAfterArraycopy) | |
4699 // (If InsertMemBarAfterArraycopy, there is already one in place.) | |
4700 insert_mem_bar(Op_MemBarCPUOrder); | |
4701 return true; | |
4702 } | |
4703 | |
4704 // (2) src and dest arrays must have elements of the same BasicType | |
4705 // Figure out the size and type of the elements we will be copying. | |
4706 BasicType src_elem = top_src->klass()->as_array_klass()->element_type()->basic_type(); | |
4707 BasicType dest_elem = top_dest->klass()->as_array_klass()->element_type()->basic_type(); | |
4708 if (src_elem == T_ARRAY) src_elem = T_OBJECT; | |
4709 if (dest_elem == T_ARRAY) dest_elem = T_OBJECT; | |
4710 | |
4711 if (src_elem != dest_elem || dest_elem == T_VOID) { | |
4712 // The component types are not the same or are not recognized. Punt. | |
4713 // (But, avoid the native method wrapper to JVM_ArrayCopy.) | |
4714 generate_slow_arraycopy(TypePtr::BOTTOM, | |
2324 | 4715 src, src_offset, dest, dest_offset, length, |
4716 /*dest_uninitialized*/false); | |
0 | 4717 return true; |
4718 } | |
4719 | |
12966 | 4720 if (src_elem == T_OBJECT) { |
4721 // If both arrays are object arrays then having the exact types | |
4722 // for both will remove the need for a subtype check at runtime | |
4723 // before the call and may make it possible to pick a faster copy | |
4724 // routine (without a subtype check on every element) | |
4725 // Do we have the exact type of src? | |
4726 bool could_have_src = src_spec; | |
4727 // Do we have the exact type of dest? | |
4728 bool could_have_dest = dest_spec; | |
4729 ciKlass* src_k = top_src->klass(); | |
4730 ciKlass* dest_k = top_dest->klass(); | |
4731 if (!src_spec) { | |
4732 src_k = src_type->speculative_type(); | |
4733 if (src_k != NULL && src_k->is_array_klass()) { | |
4734 could_have_src = true; | |
4735 } | |
4736 } | |
4737 if (!dest_spec) { | |
4738 dest_k = dest_type->speculative_type(); | |
4739 if (dest_k != NULL && dest_k->is_array_klass()) { | |
4740 could_have_dest = true; | |
4741 } | |
4742 } | |
4743 if (could_have_src && could_have_dest) { | |
4744 // If we can have both exact types, emit the missing guards | |
4745 if (could_have_src && !src_spec) { | |
4746 src = maybe_cast_profiled_obj(src, src_k); | |
4747 } | |
4748 if (could_have_dest && !dest_spec) { | |
4749 dest = maybe_cast_profiled_obj(dest, dest_k); | |
4750 } | |
4751 } | |
4752 } | |
4753 | |
0 | 4754 //--------------------------------------------------------------------------- |
4755 // We will make a fast path for this call to arraycopy. | |
4756 | |
4757 // We have the following tests left to perform: | |
4758 // | |
4759 // (3) src and dest must not be null. | |
4760 // (4) src_offset must not be negative. | |
4761 // (5) dest_offset must not be negative. | |
4762 // (6) length must not be negative. | |
4763 // (7) src_offset + length must not exceed length of src. | |
4764 // (8) dest_offset + length must not exceed length of dest. | |
4765 // (9) each element of an oop array must be assignable | |
4766 | |
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4767 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 4768 record_for_igvn(slow_region); |
4769 | |
4770 // (3) operands must not be null | |
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4771 // We currently perform our null checks with the null_check routine. |
0 | 4772 // This means that the null exceptions will be reported in the caller |
4773 // rather than (correctly) reported inside of the native arraycopy call. | |
4774 // This should be corrected, given time. We do our null check with the | |
4775 // stack pointer restored. | |
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4776 src = null_check(src, T_ARRAY); |
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4777 dest = null_check(dest, T_ARRAY); |
0 | 4778 |
4779 // (4) src_offset must not be negative. | |
4780 generate_negative_guard(src_offset, slow_region); | |
4781 | |
4782 // (5) dest_offset must not be negative. | |
4783 generate_negative_guard(dest_offset, slow_region); | |
4784 | |
4785 // (6) length must not be negative (moved to generate_arraycopy()). | |
4786 // generate_negative_guard(length, slow_region); | |
4787 | |
4788 // (7) src_offset + length must not exceed length of src. | |
4789 generate_limit_guard(src_offset, length, | |
4790 load_array_length(src), | |
4791 slow_region); | |
4792 | |
4793 // (8) dest_offset + length must not exceed length of dest. | |
4794 generate_limit_guard(dest_offset, length, | |
4795 load_array_length(dest), | |
4796 slow_region); | |
4797 | |
4798 // (9) each element of an oop array must be assignable | |
4799 // The generate_arraycopy subroutine checks this. | |
4800 | |
4801 // This is where the memory effects are placed: | |
4802 const TypePtr* adr_type = TypeAryPtr::get_array_body_type(dest_elem); | |
4803 generate_arraycopy(adr_type, dest_elem, | |
4804 src, src_offset, dest, dest_offset, length, | |
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|
4805 false, false, slow_region); |
0 | 4806 |
4807 return true; | |
4808 } | |
4809 | |
4810 //-----------------------------generate_arraycopy---------------------- | |
4811 // Generate an optimized call to arraycopy. | |
4812 // Caller must guard against non-arrays. | |
4813 // Caller must determine a common array basic-type for both arrays. | |
4814 // Caller must validate offsets against array bounds. | |
4815 // The slow_region has already collected guard failure paths | |
4816 // (such as out of bounds length or non-conformable array types). | |
4817 // The generated code has this shape, in general: | |
4818 // | |
4819 // if (length == 0) return // via zero_path | |
4820 // slowval = -1 | |
4821 // if (types unknown) { | |
4822 // slowval = call generic copy loop | |
4823 // if (slowval == 0) return // via checked_path | |
4824 // } else if (indexes in bounds) { | |
4825 // if ((is object array) && !(array type check)) { | |
4826 // slowval = call checked copy loop | |
4827 // if (slowval == 0) return // via checked_path | |
4828 // } else { | |
4829 // call bulk copy loop | |
4830 // return // via fast_path | |
4831 // } | |
4832 // } | |
4833 // // adjust params for remaining work: | |
4834 // if (slowval != -1) { | |
4835 // n = -1^slowval; src_offset += n; dest_offset += n; length -= n | |
4836 // } | |
4837 // slow_region: | |
4838 // call slow arraycopy(src, src_offset, dest, dest_offset, length) | |
4839 // return // via slow_call_path | |
4840 // | |
4841 // This routine is used from several intrinsics: System.arraycopy, | |
4842 // Object.clone (the array subcase), and Arrays.copyOf[Range]. | |
4843 // | |
4844 void | |
4845 LibraryCallKit::generate_arraycopy(const TypePtr* adr_type, | |
4846 BasicType basic_elem_type, | |
4847 Node* src, Node* src_offset, | |
4848 Node* dest, Node* dest_offset, | |
4849 Node* copy_length, | |
4850 bool disjoint_bases, | |
4851 bool length_never_negative, | |
4852 RegionNode* slow_region) { | |
4853 | |
4854 if (slow_region == NULL) { | |
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4855 slow_region = new(C) RegionNode(1); |
0 | 4856 record_for_igvn(slow_region); |
4857 } | |
4858 | |
4859 Node* original_dest = dest; | |
4860 AllocateArrayNode* alloc = NULL; // used for zeroing, if needed | |
2324 | 4861 bool dest_uninitialized = false; |
0 | 4862 |
4863 // See if this is the initialization of a newly-allocated array. | |
4864 // If so, we will take responsibility here for initializing it to zero. | |
4865 // (Note: Because tightly_coupled_allocation performs checks on the | |
4866 // out-edges of the dest, we need to avoid making derived pointers | |
4867 // from it until we have checked its uses.) | |
4868 if (ReduceBulkZeroing | |
4869 && !ZeroTLAB // pointless if already zeroed | |
4870 && basic_elem_type != T_CONFLICT // avoid corner case | |
4778 | 4871 && !src->eqv_uncast(dest) |
0 | 4872 && ((alloc = tightly_coupled_allocation(dest, slow_region)) |
4873 != NULL) | |
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|
4874 && _gvn.find_int_con(alloc->in(AllocateNode::ALength), 1) > 0 |
0 | 4875 && alloc->maybe_set_complete(&_gvn)) { |
4876 // "You break it, you buy it." | |
4877 InitializeNode* init = alloc->initialization(); | |
4878 assert(init->is_complete(), "we just did this"); | |
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4879 init->set_complete_with_arraycopy(); |
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4880 assert(dest->is_CheckCastPP(), "sanity"); |
0 | 4881 assert(dest->in(0)->in(0) == init, "dest pinned"); |
4882 adr_type = TypeRawPtr::BOTTOM; // all initializations are into raw memory | |
4883 // From this point on, every exit path is responsible for | |
4884 // initializing any non-copied parts of the object to zero. | |
2324 | 4885 // Also, if this flag is set we make sure that arraycopy interacts properly |
4886 // with G1, eliding pre-barriers. See CR 6627983. | |
4887 dest_uninitialized = true; | |
0 | 4888 } else { |
4889 // No zeroing elimination here. | |
4890 alloc = NULL; | |
4891 //original_dest = dest; | |
2324 | 4892 //dest_uninitialized = false; |
0 | 4893 } |
4894 | |
4895 // Results are placed here: | |
4896 enum { fast_path = 1, // normal void-returning assembly stub | |
4897 checked_path = 2, // special assembly stub with cleanup | |
4898 slow_call_path = 3, // something went wrong; call the VM | |
4899 zero_path = 4, // bypass when length of copy is zero | |
4900 bcopy_path = 5, // copy primitive array by 64-bit blocks | |
4901 PATH_LIMIT = 6 | |
4902 }; | |
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4903 RegionNode* result_region = new(C) RegionNode(PATH_LIMIT); |
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4904 PhiNode* result_i_o = new(C) PhiNode(result_region, Type::ABIO); |
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4905 PhiNode* result_memory = new(C) PhiNode(result_region, Type::MEMORY, adr_type); |
0 | 4906 record_for_igvn(result_region); |
4907 _gvn.set_type_bottom(result_i_o); | |
4908 _gvn.set_type_bottom(result_memory); | |
4909 assert(adr_type != TypePtr::BOTTOM, "must be RawMem or a T[] slice"); | |
4910 | |
4911 // The slow_control path: | |
4912 Node* slow_control; | |
4913 Node* slow_i_o = i_o(); | |
4914 Node* slow_mem = memory(adr_type); | |
4915 debug_only(slow_control = (Node*) badAddress); | |
4916 | |
4917 // Checked control path: | |
4918 Node* checked_control = top(); | |
4919 Node* checked_mem = NULL; | |
4920 Node* checked_i_o = NULL; | |
4921 Node* checked_value = NULL; | |
4922 | |
4923 if (basic_elem_type == T_CONFLICT) { | |
2324 | 4924 assert(!dest_uninitialized, ""); |
0 | 4925 Node* cv = generate_generic_arraycopy(adr_type, |
4926 src, src_offset, dest, dest_offset, | |
2324 | 4927 copy_length, dest_uninitialized); |
0 | 4928 if (cv == NULL) cv = intcon(-1); // failure (no stub available) |
4929 checked_control = control(); | |
4930 checked_i_o = i_o(); | |
4931 checked_mem = memory(adr_type); | |
4932 checked_value = cv; | |
4933 set_control(top()); // no fast path | |
4934 } | |
4935 | |
4936 Node* not_pos = generate_nonpositive_guard(copy_length, length_never_negative); | |
4937 if (not_pos != NULL) { | |
4938 PreserveJVMState pjvms(this); | |
4939 set_control(not_pos); | |
4940 | |
4941 // (6) length must not be negative. | |
4942 if (!length_never_negative) { | |
4943 generate_negative_guard(copy_length, slow_region); | |
4944 } | |
4945 | |
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4946 // copy_length is 0. |
2324 | 4947 if (!stopped() && dest_uninitialized) { |
0 | 4948 Node* dest_length = alloc->in(AllocateNode::ALength); |
4778 | 4949 if (copy_length->eqv_uncast(dest_length) |
0 | 4950 || _gvn.find_int_con(dest_length, 1) <= 0) { |
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4951 // There is no zeroing to do. No need for a secondary raw memory barrier. |
0 | 4952 } else { |
4953 // Clear the whole thing since there are no source elements to copy. | |
4954 generate_clear_array(adr_type, dest, basic_elem_type, | |
4955 intcon(0), NULL, | |
4956 alloc->in(AllocateNode::AllocSize)); | |
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4957 // Use a secondary InitializeNode as raw memory barrier. |
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4958 // Currently it is needed only on this path since other |
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4959 // paths have stub or runtime calls as raw memory barriers. |
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4960 InitializeNode* init = insert_mem_bar_volatile(Op_Initialize, |
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4961 Compile::AliasIdxRaw, |
4325cdaa78ad
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4962 top())->as_Initialize(); |
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4963 init->set_complete(&_gvn); // (there is no corresponding AllocateNode) |
0 | 4964 } |
4965 } | |
4966 | |
4967 // Present the results of the fast call. | |
4968 result_region->init_req(zero_path, control()); | |
4969 result_i_o ->init_req(zero_path, i_o()); | |
4970 result_memory->init_req(zero_path, memory(adr_type)); | |
4971 } | |
4972 | |
2324 | 4973 if (!stopped() && dest_uninitialized) { |
0 | 4974 // We have to initialize the *uncopied* part of the array to zero. |
4975 // The copy destination is the slice dest[off..off+len]. The other slices | |
4976 // are dest_head = dest[0..off] and dest_tail = dest[off+len..dest.length]. | |
4977 Node* dest_size = alloc->in(AllocateNode::AllocSize); | |
4978 Node* dest_length = alloc->in(AllocateNode::ALength); | |
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4979 Node* dest_tail = _gvn.transform(new(C) AddINode(dest_offset, |
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4980 copy_length)); |
0 | 4981 |
4982 // If there is a head section that needs zeroing, do it now. | |
4983 if (find_int_con(dest_offset, -1) != 0) { | |
4984 generate_clear_array(adr_type, dest, basic_elem_type, | |
4985 intcon(0), dest_offset, | |
4986 NULL); | |
4987 } | |
4988 | |
4989 // Next, perform a dynamic check on the tail length. | |
4990 // It is often zero, and we can win big if we prove this. | |
4991 // There are two wins: Avoid generating the ClearArray | |
4992 // with its attendant messy index arithmetic, and upgrade | |
4993 // the copy to a more hardware-friendly word size of 64 bits. | |
4994 Node* tail_ctl = NULL; | |
4778 | 4995 if (!stopped() && !dest_tail->eqv_uncast(dest_length)) { |
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4996 Node* cmp_lt = _gvn.transform(new(C) CmpINode(dest_tail, dest_length)); |
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4997 Node* bol_lt = _gvn.transform(new(C) BoolNode(cmp_lt, BoolTest::lt)); |
0 | 4998 tail_ctl = generate_slow_guard(bol_lt, NULL); |
4999 assert(tail_ctl != NULL || !stopped(), "must be an outcome"); | |
5000 } | |
5001 | |
5002 // At this point, let's assume there is no tail. | |
5003 if (!stopped() && alloc != NULL && basic_elem_type != T_OBJECT) { | |
5004 // There is no tail. Try an upgrade to a 64-bit copy. | |
5005 bool didit = false; | |
5006 { PreserveJVMState pjvms(this); | |
5007 didit = generate_block_arraycopy(adr_type, basic_elem_type, alloc, | |
5008 src, src_offset, dest, dest_offset, | |
2324 | 5009 dest_size, dest_uninitialized); |
0 | 5010 if (didit) { |
5011 // Present the results of the block-copying fast call. | |
5012 result_region->init_req(bcopy_path, control()); | |
5013 result_i_o ->init_req(bcopy_path, i_o()); | |
5014 result_memory->init_req(bcopy_path, memory(adr_type)); | |
5015 } | |
5016 } | |
5017 if (didit) | |
5018 set_control(top()); // no regular fast path | |
5019 } | |
5020 | |
5021 // Clear the tail, if any. | |
5022 if (tail_ctl != NULL) { | |
5023 Node* notail_ctl = stopped() ? NULL : control(); | |
5024 set_control(tail_ctl); | |
5025 if (notail_ctl == NULL) { | |
5026 generate_clear_array(adr_type, dest, basic_elem_type, | |
5027 dest_tail, NULL, | |
5028 dest_size); | |
5029 } else { | |
5030 // Make a local merge. | |
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5031 Node* done_ctl = new(C) RegionNode(3); |
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5032 Node* done_mem = new(C) PhiNode(done_ctl, Type::MEMORY, adr_type); |
0 | 5033 done_ctl->init_req(1, notail_ctl); |
5034 done_mem->init_req(1, memory(adr_type)); | |
5035 generate_clear_array(adr_type, dest, basic_elem_type, | |
5036 dest_tail, NULL, | |
5037 dest_size); | |
5038 done_ctl->init_req(2, control()); | |
5039 done_mem->init_req(2, memory(adr_type)); | |
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5040 set_control( _gvn.transform(done_ctl)); |
0 | 5041 set_memory( _gvn.transform(done_mem), adr_type ); |
5042 } | |
5043 } | |
5044 } | |
5045 | |
5046 BasicType copy_type = basic_elem_type; | |
5047 assert(basic_elem_type != T_ARRAY, "caller must fix this"); | |
5048 if (!stopped() && copy_type == T_OBJECT) { | |
5049 // If src and dest have compatible element types, we can copy bits. | |
5050 // Types S[] and D[] are compatible if D is a supertype of S. | |
5051 // | |
5052 // If they are not, we will use checked_oop_disjoint_arraycopy, | |
5053 // which performs a fast optimistic per-oop check, and backs off | |
5054 // further to JVM_ArrayCopy on the first per-oop check that fails. | |
5055 // (Actually, we don't move raw bits only; the GC requires card marks.) | |
5056 | |
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5057 // Get the Klass* for both src and dest |
0 | 5058 Node* src_klass = load_object_klass(src); |
5059 Node* dest_klass = load_object_klass(dest); | |
5060 | |
5061 // Generate the subtype check. | |
5062 // This might fold up statically, or then again it might not. | |
5063 // | |
5064 // Non-static example: Copying List<String>.elements to a new String[]. | |
5065 // The backing store for a List<String> is always an Object[], | |
5066 // but its elements are always type String, if the generic types | |
5067 // are correct at the source level. | |
5068 // | |
5069 // Test S[] against D[], not S against D, because (probably) | |
5070 // the secondary supertype cache is less busy for S[] than S. | |
5071 // This usually only matters when D is an interface. | |
5072 Node* not_subtype_ctrl = gen_subtype_check(src_klass, dest_klass); | |
5073 // Plug failing path into checked_oop_disjoint_arraycopy | |
5074 if (not_subtype_ctrl != top()) { | |
5075 PreserveJVMState pjvms(this); | |
5076 set_control(not_subtype_ctrl); | |
5077 // (At this point we can assume disjoint_bases, since types differ.) | |
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5078 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); |
0 | 5079 Node* p1 = basic_plus_adr(dest_klass, ek_offset); |
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5080 Node* n1 = LoadKlassNode::make(_gvn, immutable_memory(), p1, TypeRawPtr::BOTTOM); |
0 | 5081 Node* dest_elem_klass = _gvn.transform(n1); |
5082 Node* cv = generate_checkcast_arraycopy(adr_type, | |
5083 dest_elem_klass, | |
5084 src, src_offset, dest, dest_offset, | |
2324 | 5085 ConvI2X(copy_length), dest_uninitialized); |
0 | 5086 if (cv == NULL) cv = intcon(-1); // failure (no stub available) |
5087 checked_control = control(); | |
5088 checked_i_o = i_o(); | |
5089 checked_mem = memory(adr_type); | |
5090 checked_value = cv; | |
5091 } | |
5092 // At this point we know we do not need type checks on oop stores. | |
5093 | |
5094 // Let's see if we need card marks: | |
5095 if (alloc != NULL && use_ReduceInitialCardMarks()) { | |
5096 // If we do not need card marks, copy using the jint or jlong stub. | |
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5097 copy_type = LP64_ONLY(UseCompressedOops ? T_INT : T_LONG) NOT_LP64(T_INT); |
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5098 assert(type2aelembytes(basic_elem_type) == type2aelembytes(copy_type), |
0 | 5099 "sizes agree"); |
5100 } | |
5101 } | |
5102 | |
5103 if (!stopped()) { | |
5104 // Generate the fast path, if possible. | |
5105 PreserveJVMState pjvms(this); | |
5106 generate_unchecked_arraycopy(adr_type, copy_type, disjoint_bases, | |
5107 src, src_offset, dest, dest_offset, | |
2324 | 5108 ConvI2X(copy_length), dest_uninitialized); |
0 | 5109 |
5110 // Present the results of the fast call. | |
5111 result_region->init_req(fast_path, control()); | |
5112 result_i_o ->init_req(fast_path, i_o()); | |
5113 result_memory->init_req(fast_path, memory(adr_type)); | |
5114 } | |
5115 | |
5116 // Here are all the slow paths up to this point, in one bundle: | |
5117 slow_control = top(); | |
5118 if (slow_region != NULL) | |
5119 slow_control = _gvn.transform(slow_region); | |
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5120 DEBUG_ONLY(slow_region = (RegionNode*)badAddress); |
0 | 5121 |
5122 set_control(checked_control); | |
5123 if (!stopped()) { | |
5124 // Clean up after the checked call. | |
5125 // The returned value is either 0 or -1^K, | |
5126 // where K = number of partially transferred array elements. | |
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5127 Node* cmp = _gvn.transform(new(C) CmpINode(checked_value, intcon(0))); |
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5128 Node* bol = _gvn.transform(new(C) BoolNode(cmp, BoolTest::eq)); |
0 | 5129 IfNode* iff = create_and_map_if(control(), bol, PROB_MAX, COUNT_UNKNOWN); |
5130 | |
5131 // If it is 0, we are done, so transfer to the end. | |
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5132 Node* checks_done = _gvn.transform(new(C) IfTrueNode(iff)); |
0 | 5133 result_region->init_req(checked_path, checks_done); |
5134 result_i_o ->init_req(checked_path, checked_i_o); | |
5135 result_memory->init_req(checked_path, checked_mem); | |
5136 | |
5137 // If it is not zero, merge into the slow call. | |
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5138 set_control( _gvn.transform(new(C) IfFalseNode(iff) )); |
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5139 RegionNode* slow_reg2 = new(C) RegionNode(3); |
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5140 PhiNode* slow_i_o2 = new(C) PhiNode(slow_reg2, Type::ABIO); |
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5141 PhiNode* slow_mem2 = new(C) PhiNode(slow_reg2, Type::MEMORY, adr_type); |
0 | 5142 record_for_igvn(slow_reg2); |
5143 slow_reg2 ->init_req(1, slow_control); | |
5144 slow_i_o2 ->init_req(1, slow_i_o); | |
5145 slow_mem2 ->init_req(1, slow_mem); | |
5146 slow_reg2 ->init_req(2, control()); | |
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5147 slow_i_o2 ->init_req(2, checked_i_o); |
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5148 slow_mem2 ->init_req(2, checked_mem); |
0 | 5149 |
5150 slow_control = _gvn.transform(slow_reg2); | |
5151 slow_i_o = _gvn.transform(slow_i_o2); | |
5152 slow_mem = _gvn.transform(slow_mem2); | |
5153 | |
5154 if (alloc != NULL) { | |
5155 // We'll restart from the very beginning, after zeroing the whole thing. | |
5156 // This can cause double writes, but that's OK since dest is brand new. | |
5157 // So we ignore the low 31 bits of the value returned from the stub. | |
5158 } else { | |
5159 // We must continue the copy exactly where it failed, or else | |
5160 // another thread might see the wrong number of writes to dest. | |
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5161 Node* checked_offset = _gvn.transform(new(C) XorINode(checked_value, intcon(-1))); |
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5162 Node* slow_offset = new(C) PhiNode(slow_reg2, TypeInt::INT); |
0 | 5163 slow_offset->init_req(1, intcon(0)); |
5164 slow_offset->init_req(2, checked_offset); | |
5165 slow_offset = _gvn.transform(slow_offset); | |
5166 | |
5167 // Adjust the arguments by the conditionally incoming offset. | |
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5168 Node* src_off_plus = _gvn.transform(new(C) AddINode(src_offset, slow_offset)); |
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5169 Node* dest_off_plus = _gvn.transform(new(C) AddINode(dest_offset, slow_offset)); |
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5170 Node* length_minus = _gvn.transform(new(C) SubINode(copy_length, slow_offset)); |
0 | 5171 |
5172 // Tweak the node variables to adjust the code produced below: | |
5173 src_offset = src_off_plus; | |
5174 dest_offset = dest_off_plus; | |
5175 copy_length = length_minus; | |
5176 } | |
5177 } | |
5178 | |
5179 set_control(slow_control); | |
5180 if (!stopped()) { | |
5181 // Generate the slow path, if needed. | |
5182 PreserveJVMState pjvms(this); // replace_in_map may trash the map | |
5183 | |
5184 set_memory(slow_mem, adr_type); | |
5185 set_i_o(slow_i_o); | |
5186 | |
2324 | 5187 if (dest_uninitialized) { |
0 | 5188 generate_clear_array(adr_type, dest, basic_elem_type, |
5189 intcon(0), NULL, | |
5190 alloc->in(AllocateNode::AllocSize)); | |
5191 } | |
5192 | |
5193 generate_slow_arraycopy(adr_type, | |
5194 src, src_offset, dest, dest_offset, | |
2324 | 5195 copy_length, /*dest_uninitialized*/false); |
0 | 5196 |
5197 result_region->init_req(slow_call_path, control()); | |
5198 result_i_o ->init_req(slow_call_path, i_o()); | |
5199 result_memory->init_req(slow_call_path, memory(adr_type)); | |
5200 } | |
5201 | |
5202 // Remove unused edges. | |
5203 for (uint i = 1; i < result_region->req(); i++) { | |
5204 if (result_region->in(i) == NULL) | |
5205 result_region->init_req(i, top()); | |
5206 } | |
5207 | |
5208 // Finished; return the combined state. | |
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5209 set_control( _gvn.transform(result_region)); |
0 | 5210 set_i_o( _gvn.transform(result_i_o) ); |
5211 set_memory( _gvn.transform(result_memory), adr_type ); | |
5212 | |
5213 // The memory edges above are precise in order to model effects around | |
605 | 5214 // array copies accurately to allow value numbering of field loads around |
0 | 5215 // arraycopy. Such field loads, both before and after, are common in Java |
5216 // collections and similar classes involving header/array data structures. | |
5217 // | |
5218 // But with low number of register or when some registers are used or killed | |
5219 // by arraycopy calls it causes registers spilling on stack. See 6544710. | |
5220 // The next memory barrier is added to avoid it. If the arraycopy can be | |
5221 // optimized away (which it can, sometimes) then we can manually remove | |
5222 // the membar also. | |
958
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5223 // |
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5224 // Do not let reads from the cloned object float above the arraycopy. |
4763
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5225 if (alloc != NULL) { |
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5226 // Do not let stores that initialize this object be reordered with |
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5227 // a subsequent store that would make this object accessible by |
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5228 // other threads. |
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5229 // Record what AllocateNode this StoreStore protects so that |
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5230 // escape analysis can go from the MemBarStoreStoreNode to the |
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5231 // AllocateNode and eliminate the MemBarStoreStoreNode if possible |
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5232 // based on the escape status of the AllocateNode. |
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5233 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out(AllocateNode::RawAddress)); |
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5234 } else if (InsertMemBarAfterArraycopy) |
0 | 5235 insert_mem_bar(Op_MemBarCPUOrder); |
5236 } | |
5237 | |
5238 | |
5239 // Helper function which determines if an arraycopy immediately follows | |
5240 // an allocation, with no intervening tests or other escapes for the object. | |
5241 AllocateArrayNode* | |
5242 LibraryCallKit::tightly_coupled_allocation(Node* ptr, | |
5243 RegionNode* slow_region) { | |
5244 if (stopped()) return NULL; // no fast path | |
5245 if (C->AliasLevel() == 0) return NULL; // no MergeMems around | |
5246 | |
5247 AllocateArrayNode* alloc = AllocateArrayNode::Ideal_array_allocation(ptr, &_gvn); | |
5248 if (alloc == NULL) return NULL; | |
5249 | |
5250 Node* rawmem = memory(Compile::AliasIdxRaw); | |
5251 // Is the allocation's memory state untouched? | |
5252 if (!(rawmem->is_Proj() && rawmem->in(0)->is_Initialize())) { | |
5253 // Bail out if there have been raw-memory effects since the allocation. | |
5254 // (Example: There might have been a call or safepoint.) | |
5255 return NULL; | |
5256 } | |
5257 rawmem = rawmem->in(0)->as_Initialize()->memory(Compile::AliasIdxRaw); | |
5258 if (!(rawmem->is_Proj() && rawmem->in(0) == alloc)) { | |
5259 return NULL; | |
5260 } | |
5261 | |
5262 // There must be no unexpected observers of this allocation. | |
5263 for (DUIterator_Fast imax, i = ptr->fast_outs(imax); i < imax; i++) { | |
5264 Node* obs = ptr->fast_out(i); | |
5265 if (obs != this->map()) { | |
5266 return NULL; | |
5267 } | |
5268 } | |
5269 | |
5270 // This arraycopy must unconditionally follow the allocation of the ptr. | |
5271 Node* alloc_ctl = ptr->in(0); | |
5272 assert(just_allocated_object(alloc_ctl) == ptr, "most recent allo"); | |
5273 | |
5274 Node* ctl = control(); | |
5275 while (ctl != alloc_ctl) { | |
5276 // There may be guards which feed into the slow_region. | |
5277 // Any other control flow means that we might not get a chance | |
5278 // to finish initializing the allocated object. | |
5279 if ((ctl->is_IfFalse() || ctl->is_IfTrue()) && ctl->in(0)->is_If()) { | |
5280 IfNode* iff = ctl->in(0)->as_If(); | |
5281 Node* not_ctl = iff->proj_out(1 - ctl->as_Proj()->_con); | |
5282 assert(not_ctl != NULL && not_ctl != ctl, "found alternate"); | |
5283 if (slow_region != NULL && slow_region->find_edge(not_ctl) >= 1) { | |
5284 ctl = iff->in(0); // This test feeds the known slow_region. | |
5285 continue; | |
5286 } | |
5287 // One more try: Various low-level checks bottom out in | |
5288 // uncommon traps. If the debug-info of the trap omits | |
5289 // any reference to the allocation, as we've already | |
5290 // observed, then there can be no objection to the trap. | |
5291 bool found_trap = false; | |
5292 for (DUIterator_Fast jmax, j = not_ctl->fast_outs(jmax); j < jmax; j++) { | |
5293 Node* obs = not_ctl->fast_out(j); | |
5294 if (obs->in(0) == not_ctl && obs->is_Call() && | |
1748 | 5295 (obs->as_Call()->entry_point() == SharedRuntime::uncommon_trap_blob()->entry_point())) { |
0 | 5296 found_trap = true; break; |
5297 } | |
5298 } | |
5299 if (found_trap) { | |
5300 ctl = iff->in(0); // This test feeds a harmless uncommon trap. | |
5301 continue; | |
5302 } | |
5303 } | |
5304 return NULL; | |
5305 } | |
5306 | |
5307 // If we get this far, we have an allocation which immediately | |
5308 // precedes the arraycopy, and we can take over zeroing the new object. | |
5309 // The arraycopy will finish the initialization, and provide | |
5310 // a new control state to which we will anchor the destination pointer. | |
5311 | |
5312 return alloc; | |
5313 } | |
5314 | |
5315 // Helper for initialization of arrays, creating a ClearArray. | |
5316 // It writes zero bits in [start..end), within the body of an array object. | |
5317 // The memory effects are all chained onto the 'adr_type' alias category. | |
5318 // | |
5319 // Since the object is otherwise uninitialized, we are free | |
5320 // to put a little "slop" around the edges of the cleared area, | |
5321 // as long as it does not go back into the array's header, | |
5322 // or beyond the array end within the heap. | |
5323 // | |
5324 // The lower edge can be rounded down to the nearest jint and the | |
5325 // upper edge can be rounded up to the nearest MinObjAlignmentInBytes. | |
5326 // | |
5327 // Arguments: | |
5328 // adr_type memory slice where writes are generated | |
5329 // dest oop of the destination array | |
5330 // basic_elem_type element type of the destination | |
5331 // slice_idx array index of first element to store | |
5332 // slice_len number of elements to store (or NULL) | |
5333 // dest_size total size in bytes of the array object | |
5334 // | |
5335 // Exactly one of slice_len or dest_size must be non-NULL. | |
5336 // If dest_size is non-NULL, zeroing extends to the end of the object. | |
5337 // If slice_len is non-NULL, the slice_idx value must be a constant. | |
5338 void | |
5339 LibraryCallKit::generate_clear_array(const TypePtr* adr_type, | |
5340 Node* dest, | |
5341 BasicType basic_elem_type, | |
5342 Node* slice_idx, | |
5343 Node* slice_len, | |
5344 Node* dest_size) { | |
5345 // one or the other but not both of slice_len and dest_size: | |
5346 assert((slice_len != NULL? 1: 0) + (dest_size != NULL? 1: 0) == 1, ""); | |
5347 if (slice_len == NULL) slice_len = top(); | |
5348 if (dest_size == NULL) dest_size = top(); | |
5349 | |
5350 // operate on this memory slice: | |
5351 Node* mem = memory(adr_type); // memory slice to operate on | |
5352 | |
5353 // scaling and rounding of indexes: | |
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5354 int scale = exact_log2(type2aelembytes(basic_elem_type)); |
0 | 5355 int abase = arrayOopDesc::base_offset_in_bytes(basic_elem_type); |
5356 int clear_low = (-1 << scale) & (BytesPerInt - 1); | |
5357 int bump_bit = (-1 << scale) & BytesPerInt; | |
5358 | |
5359 // determine constant starts and ends | |
5360 const intptr_t BIG_NEG = -128; | |
5361 assert(BIG_NEG + 2*abase < 0, "neg enough"); | |
5362 intptr_t slice_idx_con = (intptr_t) find_int_con(slice_idx, BIG_NEG); | |
5363 intptr_t slice_len_con = (intptr_t) find_int_con(slice_len, BIG_NEG); | |
5364 if (slice_len_con == 0) { | |
5365 return; // nothing to do here | |
5366 } | |
5367 intptr_t start_con = (abase + (slice_idx_con << scale)) & ~clear_low; | |
5368 intptr_t end_con = find_intptr_t_con(dest_size, -1); | |
5369 if (slice_idx_con >= 0 && slice_len_con >= 0) { | |
5370 assert(end_con < 0, "not two cons"); | |
5371 end_con = round_to(abase + ((slice_idx_con + slice_len_con) << scale), | |
5372 BytesPerLong); | |
5373 } | |
5374 | |
5375 if (start_con >= 0 && end_con >= 0) { | |
5376 // Constant start and end. Simple. | |
5377 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5378 start_con, end_con, &_gvn); | |
5379 } else if (start_con >= 0 && dest_size != top()) { | |
5380 // Constant start, pre-rounded end after the tail of the array. | |
5381 Node* end = dest_size; | |
5382 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5383 start_con, end, &_gvn); | |
5384 } else if (start_con >= 0 && slice_len != top()) { | |
5385 // Constant start, non-constant end. End needs rounding up. | |
5386 // End offset = round_up(abase + ((slice_idx_con + slice_len) << scale), 8) | |
5387 intptr_t end_base = abase + (slice_idx_con << scale); | |
5388 int end_round = (-1 << scale) & (BytesPerLong - 1); | |
5389 Node* end = ConvI2X(slice_len); | |
5390 if (scale != 0) | |
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5391 end = _gvn.transform(new(C) LShiftXNode(end, intcon(scale) )); |
0 | 5392 end_base += end_round; |
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5393 end = _gvn.transform(new(C) AddXNode(end, MakeConX(end_base))); |
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5394 end = _gvn.transform(new(C) AndXNode(end, MakeConX(~end_round))); |
0 | 5395 mem = ClearArrayNode::clear_memory(control(), mem, dest, |
5396 start_con, end, &_gvn); | |
5397 } else if (start_con < 0 && dest_size != top()) { | |
5398 // Non-constant start, pre-rounded end after the tail of the array. | |
5399 // This is almost certainly a "round-to-end" operation. | |
5400 Node* start = slice_idx; | |
5401 start = ConvI2X(start); | |
5402 if (scale != 0) | |
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5403 start = _gvn.transform(new(C) LShiftXNode( start, intcon(scale) )); |
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5404 start = _gvn.transform(new(C) AddXNode(start, MakeConX(abase))); |
0 | 5405 if ((bump_bit | clear_low) != 0) { |
5406 int to_clear = (bump_bit | clear_low); | |
5407 // Align up mod 8, then store a jint zero unconditionally | |
5408 // just before the mod-8 boundary. | |
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5409 if (((abase + bump_bit) & ~to_clear) - bump_bit |
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5410 < arrayOopDesc::length_offset_in_bytes() + BytesPerInt) { |
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5411 bump_bit = 0; |
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5412 assert((abase & to_clear) == 0, "array base must be long-aligned"); |
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5413 } else { |
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5414 // Bump 'start' up to (or past) the next jint boundary: |
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5415 start = _gvn.transform(new(C) AddXNode(start, MakeConX(bump_bit))); |
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5416 assert((abase & clear_low) == 0, "array base must be int-aligned"); |
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5417 } |
0 | 5418 // Round bumped 'start' down to jlong boundary in body of array. |
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5419 start = _gvn.transform(new(C) AndXNode(start, MakeConX(~to_clear))); |
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5420 if (bump_bit != 0) { |
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5421 // Store a zero to the immediately preceding jint: |
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5422 Node* x1 = _gvn.transform(new(C) AddXNode(start, MakeConX(-bump_bit))); |
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5423 Node* p1 = basic_plus_adr(dest, x1); |
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diff
changeset
|
5424 mem = StoreNode::make(_gvn, control(), mem, p1, adr_type, intcon(0), T_INT); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
34
diff
changeset
|
5425 mem = _gvn.transform(mem); |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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parents:
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diff
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|
5426 } |
0 | 5427 } |
5428 Node* end = dest_size; // pre-rounded | |
5429 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5430 start, end, &_gvn); | |
5431 } else { | |
5432 // Non-constant start, unrounded non-constant end. | |
5433 // (Nobody zeroes a random midsection of an array using this routine.) | |
5434 ShouldNotReachHere(); // fix caller | |
5435 } | |
5436 | |
5437 // Done. | |
5438 set_memory(mem, adr_type); | |
5439 } | |
5440 | |
5441 | |
5442 bool | |
5443 LibraryCallKit::generate_block_arraycopy(const TypePtr* adr_type, | |
5444 BasicType basic_elem_type, | |
5445 AllocateNode* alloc, | |
5446 Node* src, Node* src_offset, | |
5447 Node* dest, Node* dest_offset, | |
2324 | 5448 Node* dest_size, bool dest_uninitialized) { |
0 | 5449 // See if there is an advantage from block transfer. |
29
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
5450 int scale = exact_log2(type2aelembytes(basic_elem_type)); |
0 | 5451 if (scale >= LogBytesPerLong) |
5452 return false; // it is already a block transfer | |
5453 | |
5454 // Look at the alignment of the starting offsets. | |
5455 int abase = arrayOopDesc::base_offset_in_bytes(basic_elem_type); | |
3742
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
kvn
parents:
3337
diff
changeset
|
5456 |
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
kvn
parents:
3337
diff
changeset
|
5457 intptr_t src_off_con = (intptr_t) find_int_con(src_offset, -1); |
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
kvn
parents:
3337
diff
changeset
|
5458 intptr_t dest_off_con = (intptr_t) find_int_con(dest_offset, -1); |
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
kvn
parents:
3337
diff
changeset
|
5459 if (src_off_con < 0 || dest_off_con < 0) |
0 | 5460 // At present, we can only understand constants. |
5461 return false; | |
5462 | |
3742
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
kvn
parents:
3337
diff
changeset
|
5463 intptr_t src_off = abase + (src_off_con << scale); |
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
kvn
parents:
3337
diff
changeset
|
5464 intptr_t dest_off = abase + (dest_off_con << scale); |
b2cb497dec28
7047069: Array can dynamically change size when assigned to an object field
kvn
parents:
3337
diff
changeset
|
5465 |
0 | 5466 if (((src_off | dest_off) & (BytesPerLong-1)) != 0) { |
5467 // Non-aligned; too bad. | |
5468 // One more chance: Pick off an initial 32-bit word. | |
5469 // This is a common case, since abase can be odd mod 8. | |
5470 if (((src_off | dest_off) & (BytesPerLong-1)) == BytesPerInt && | |
5471 ((src_off ^ dest_off) & (BytesPerLong-1)) == 0) { | |
5472 Node* sptr = basic_plus_adr(src, src_off); | |
5473 Node* dptr = basic_plus_adr(dest, dest_off); | |
5474 Node* sval = make_load(control(), sptr, TypeInt::INT, T_INT, adr_type); | |
5475 store_to_memory(control(), dptr, sval, T_INT, adr_type); | |
5476 src_off += BytesPerInt; | |
5477 dest_off += BytesPerInt; | |
5478 } else { | |
5479 return false; | |
5480 } | |
5481 } | |
5482 assert(src_off % BytesPerLong == 0, ""); | |
5483 assert(dest_off % BytesPerLong == 0, ""); | |
5484 | |
5485 // Do this copy by giant steps. | |
5486 Node* sptr = basic_plus_adr(src, src_off); | |
5487 Node* dptr = basic_plus_adr(dest, dest_off); | |
5488 Node* countx = dest_size; | |
11080
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5489 countx = _gvn.transform(new (C) SubXNode(countx, MakeConX(dest_off))); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5490 countx = _gvn.transform(new (C) URShiftXNode(countx, intcon(LogBytesPerLong))); |
0 | 5491 |
5492 bool disjoint_bases = true; // since alloc != NULL | |
5493 generate_unchecked_arraycopy(adr_type, T_LONG, disjoint_bases, | |
2324 | 5494 sptr, NULL, dptr, NULL, countx, dest_uninitialized); |
0 | 5495 |
5496 return true; | |
5497 } | |
5498 | |
5499 | |
5500 // Helper function; generates code for the slow case. | |
5501 // We make a call to a runtime method which emulates the native method, | |
5502 // but without the native wrapper overhead. | |
5503 void | |
5504 LibraryCallKit::generate_slow_arraycopy(const TypePtr* adr_type, | |
5505 Node* src, Node* src_offset, | |
5506 Node* dest, Node* dest_offset, | |
2324 | 5507 Node* copy_length, bool dest_uninitialized) { |
5508 assert(!dest_uninitialized, "Invariant"); | |
0 | 5509 Node* call = make_runtime_call(RC_NO_LEAF | RC_UNCOMMON, |
5510 OptoRuntime::slow_arraycopy_Type(), | |
5511 OptoRuntime::slow_arraycopy_Java(), | |
5512 "slow_arraycopy", adr_type, | |
5513 src, src_offset, dest, dest_offset, | |
5514 copy_length); | |
5515 | |
5516 // Handle exceptions thrown by this fellow: | |
5517 make_slow_call_ex(call, env()->Throwable_klass(), false); | |
5518 } | |
5519 | |
5520 // Helper function; generates code for cases requiring runtime checks. | |
5521 Node* | |
5522 LibraryCallKit::generate_checkcast_arraycopy(const TypePtr* adr_type, | |
5523 Node* dest_elem_klass, | |
5524 Node* src, Node* src_offset, | |
5525 Node* dest, Node* dest_offset, | |
2324 | 5526 Node* copy_length, bool dest_uninitialized) { |
0 | 5527 if (stopped()) return NULL; |
5528 | |
2324 | 5529 address copyfunc_addr = StubRoutines::checkcast_arraycopy(dest_uninitialized); |
0 | 5530 if (copyfunc_addr == NULL) { // Stub was not generated, go slow path. |
5531 return NULL; | |
5532 } | |
5533 | |
5534 // Pick out the parameters required to perform a store-check | |
5535 // for the target array. This is an optimistic check. It will | |
5536 // look in each non-null element's class, at the desired klass's | |
5537 // super_check_offset, for the desired klass. | |
4762
069ab3f976d3
7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
stefank
parents:
3961
diff
changeset
|
5538 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
0 | 5539 Node* p3 = basic_plus_adr(dest_elem_klass, sco_offset); |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
5540 Node* n3 = new(C) LoadINode(NULL, memory(p3), p3, _gvn.type(p3)->is_ptr()); |
1844
75588558f1bf
6980792: Crash "exception happened outside interpreter, nmethods and vtable stubs (1)"
never
parents:
1748
diff
changeset
|
5541 Node* check_offset = ConvI2X(_gvn.transform(n3)); |
0 | 5542 Node* check_value = dest_elem_klass; |
5543 | |
5544 Node* src_start = array_element_address(src, src_offset, T_OBJECT); | |
5545 Node* dest_start = array_element_address(dest, dest_offset, T_OBJECT); | |
5546 | |
5547 // (We know the arrays are never conjoint, because their types differ.) | |
5548 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5549 OptoRuntime::checkcast_arraycopy_Type(), | |
5550 copyfunc_addr, "checkcast_arraycopy", adr_type, | |
5551 // five arguments, of which two are | |
5552 // intptr_t (jlong in LP64) | |
5553 src_start, dest_start, | |
5554 copy_length XTOP, | |
5555 check_offset XTOP, | |
5556 check_value); | |
5557 | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
5558 return _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
0 | 5559 } |
5560 | |
5561 | |
5562 // Helper function; generates code for cases requiring runtime checks. | |
5563 Node* | |
5564 LibraryCallKit::generate_generic_arraycopy(const TypePtr* adr_type, | |
5565 Node* src, Node* src_offset, | |
5566 Node* dest, Node* dest_offset, | |
2324 | 5567 Node* copy_length, bool dest_uninitialized) { |
5568 assert(!dest_uninitialized, "Invariant"); | |
0 | 5569 if (stopped()) return NULL; |
5570 address copyfunc_addr = StubRoutines::generic_arraycopy(); | |
5571 if (copyfunc_addr == NULL) { // Stub was not generated, go slow path. | |
5572 return NULL; | |
5573 } | |
5574 | |
5575 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5576 OptoRuntime::generic_arraycopy_Type(), | |
5577 copyfunc_addr, "generic_arraycopy", adr_type, | |
5578 src, src_offset, dest, dest_offset, copy_length); | |
5579 | |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
5580 return _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
0 | 5581 } |
5582 | |
5583 // Helper function; generates the fast out-of-line call to an arraycopy stub. | |
5584 void | |
5585 LibraryCallKit::generate_unchecked_arraycopy(const TypePtr* adr_type, | |
5586 BasicType basic_elem_type, | |
5587 bool disjoint_bases, | |
5588 Node* src, Node* src_offset, | |
5589 Node* dest, Node* dest_offset, | |
2324 | 5590 Node* copy_length, bool dest_uninitialized) { |
0 | 5591 if (stopped()) return; // nothing to do |
5592 | |
5593 Node* src_start = src; | |
5594 Node* dest_start = dest; | |
5595 if (src_offset != NULL || dest_offset != NULL) { | |
5596 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5597 src_start = array_element_address(src, src_offset, basic_elem_type); | |
5598 dest_start = array_element_address(dest, dest_offset, basic_elem_type); | |
5599 } | |
5600 | |
5601 // Figure out which arraycopy runtime method to call. | |
5602 const char* copyfunc_name = "arraycopy"; | |
5603 address copyfunc_addr = | |
5604 basictype2arraycopy(basic_elem_type, src_offset, dest_offset, | |
2324 | 5605 disjoint_bases, copyfunc_name, dest_uninitialized); |
0 | 5606 |
5607 // Call it. Note that the count_ix value is not scaled to a byte-size. | |
5608 make_runtime_call(RC_LEAF|RC_NO_FP, | |
5609 OptoRuntime::fast_arraycopy_Type(), | |
5610 copyfunc_addr, copyfunc_name, adr_type, | |
5611 src_start, dest_start, copy_length XTOP); | |
5612 } | |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5613 |
7637
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5614 //-------------inline_encodeISOArray----------------------------------- |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5615 // encode char[] to byte[] in ISO_8859_1 |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5616 bool LibraryCallKit::inline_encodeISOArray() { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5617 assert(callee()->signature()->size() == 5, "encodeISOArray has 5 parameters"); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5618 // no receiver since it is static method |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5619 Node *src = argument(0); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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parents:
7602
diff
changeset
|
5620 Node *src_offset = argument(1); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5621 Node *dst = argument(2); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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parents:
7602
diff
changeset
|
5622 Node *dst_offset = argument(3); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5623 Node *length = argument(4); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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parents:
7602
diff
changeset
|
5624 |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5625 const Type* src_type = src->Value(&_gvn); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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parents:
7602
diff
changeset
|
5626 const Type* dst_type = dst->Value(&_gvn); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5627 const TypeAryPtr* top_src = src_type->isa_aryptr(); |
b30b3c2a0cf2
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parents:
7602
diff
changeset
|
5628 const TypeAryPtr* top_dest = dst_type->isa_aryptr(); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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parents:
7602
diff
changeset
|
5629 if (top_src == NULL || top_src->klass() == NULL || |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5630 top_dest == NULL || top_dest->klass() == NULL) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5631 // failed array check |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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parents:
7602
diff
changeset
|
5632 return false; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5633 } |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5634 |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5635 // Figure out the size and type of the elements we will be copying. |
b30b3c2a0cf2
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parents:
7602
diff
changeset
|
5636 BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5637 BasicType dst_elem = dst_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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parents:
7602
diff
changeset
|
5638 if (src_elem != T_CHAR || dst_elem != T_BYTE) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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parents:
7602
diff
changeset
|
5639 return false; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5640 } |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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parents:
7602
diff
changeset
|
5641 Node* src_start = array_element_address(src, src_offset, src_elem); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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parents:
7602
diff
changeset
|
5642 Node* dst_start = array_element_address(dst, dst_offset, dst_elem); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5643 // 'src_start' points to src array + scaled offset |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5644 // 'dst_start' points to dst array + scaled offset |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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diff
changeset
|
5645 |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5646 const TypeAryPtr* mtype = TypeAryPtr::BYTES; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5647 Node* enc = new (C) EncodeISOArrayNode(control(), memory(mtype), src_start, dst_start, length); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5648 enc = _gvn.transform(enc); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5649 Node* res_mem = _gvn.transform(new (C) SCMemProjNode(enc)); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5650 set_memory(res_mem, mtype); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
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7602
diff
changeset
|
5651 set_result(enc); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5652 return true; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5653 } |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
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7602
diff
changeset
|
5654 |
11080
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diff
changeset
|
5655 /** |
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7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
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10405
diff
changeset
|
5656 * Calculate CRC32 for byte. |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
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10405
diff
changeset
|
5657 * int java.util.zip.CRC32.update(int crc, int b) |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
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10405
diff
changeset
|
5658 */ |
b800986664f4
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drchase
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10405
diff
changeset
|
5659 bool LibraryCallKit::inline_updateCRC32() { |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5660 assert(UseCRC32Intrinsics, "need AVX and LCMUL instructions support"); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
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10405
diff
changeset
|
5661 assert(callee()->signature()->size() == 2, "update has 2 parameters"); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5662 // no receiver since it is static method |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5663 Node* crc = argument(0); // type: int |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
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10405
diff
changeset
|
5664 Node* b = argument(1); // type: int |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
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diff
changeset
|
5665 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
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diff
changeset
|
5666 /* |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
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diff
changeset
|
5667 * int c = ~ crc; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
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diff
changeset
|
5668 * b = timesXtoThe32[(b ^ c) & 0xFF]; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5669 * b = b ^ (c >>> 8); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
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diff
changeset
|
5670 * crc = ~b; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
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diff
changeset
|
5671 */ |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5672 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5673 Node* M1 = intcon(-1); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5674 crc = _gvn.transform(new (C) XorINode(crc, M1)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5675 Node* result = _gvn.transform(new (C) XorINode(crc, b)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5676 result = _gvn.transform(new (C) AndINode(result, intcon(0xFF))); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5677 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5678 Node* base = makecon(TypeRawPtr::make(StubRoutines::crc_table_addr())); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5679 Node* offset = _gvn.transform(new (C) LShiftINode(result, intcon(0x2))); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5680 Node* adr = basic_plus_adr(top(), base, ConvI2X(offset)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5681 result = make_load(control(), adr, TypeInt::INT, T_INT); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5682 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5683 crc = _gvn.transform(new (C) URShiftINode(crc, intcon(8))); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5684 result = _gvn.transform(new (C) XorINode(crc, result)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5685 result = _gvn.transform(new (C) XorINode(result, M1)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5686 set_result(result); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5687 return true; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5688 } |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5689 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5690 /** |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5691 * Calculate CRC32 for byte[] array. |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5692 * int java.util.zip.CRC32.updateBytes(int crc, byte[] buf, int off, int len) |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5693 */ |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5694 bool LibraryCallKit::inline_updateBytesCRC32() { |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5695 assert(UseCRC32Intrinsics, "need AVX and LCMUL instructions support"); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5696 assert(callee()->signature()->size() == 4, "updateBytes has 4 parameters"); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5697 // no receiver since it is static method |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5698 Node* crc = argument(0); // type: int |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5699 Node* src = argument(1); // type: oop |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5700 Node* offset = argument(2); // type: int |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5701 Node* length = argument(3); // type: int |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5702 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5703 const Type* src_type = src->Value(&_gvn); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5704 const TypeAryPtr* top_src = src_type->isa_aryptr(); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5705 if (top_src == NULL || top_src->klass() == NULL) { |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5706 // failed array check |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5707 return false; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5708 } |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5709 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5710 // Figure out the size and type of the elements we will be copying. |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5711 BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5712 if (src_elem != T_BYTE) { |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5713 return false; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5714 } |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5715 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5716 // 'src_start' points to src array + scaled offset |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5717 Node* src_start = array_element_address(src, offset, src_elem); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5718 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5719 // We assume that range check is done by caller. |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5720 // TODO: generate range check (offset+length < src.length) in debug VM. |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5721 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5722 // Call the stub. |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5723 address stubAddr = StubRoutines::updateBytesCRC32(); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5724 const char *stubName = "updateBytesCRC32"; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5725 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5726 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::updateBytesCRC32_Type(), |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5727 stubAddr, stubName, TypePtr::BOTTOM, |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5728 crc, src_start, length); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5729 Node* result = _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5730 set_result(result); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5731 return true; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5732 } |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5733 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5734 /** |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5735 * Calculate CRC32 for ByteBuffer. |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5736 * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len) |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5737 */ |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5738 bool LibraryCallKit::inline_updateByteBufferCRC32() { |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5739 assert(UseCRC32Intrinsics, "need AVX and LCMUL instructions support"); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5740 assert(callee()->signature()->size() == 5, "updateByteBuffer has 4 parameters and one is long"); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5741 // no receiver since it is static method |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5742 Node* crc = argument(0); // type: int |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5743 Node* src = argument(1); // type: long |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5744 Node* offset = argument(3); // type: int |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5745 Node* length = argument(4); // type: int |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5746 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5747 src = ConvL2X(src); // adjust Java long to machine word |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5748 Node* base = _gvn.transform(new (C) CastX2PNode(src)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5749 offset = ConvI2X(offset); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5750 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5751 // 'src_start' points to src array + scaled offset |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5752 Node* src_start = basic_plus_adr(top(), base, offset); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5753 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5754 // Call the stub. |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5755 address stubAddr = StubRoutines::updateBytesCRC32(); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5756 const char *stubName = "updateBytesCRC32"; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5757 |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5758 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::updateBytesCRC32_Type(), |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5759 stubAddr, stubName, TypePtr::BOTTOM, |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5760 crc, src_start, length); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5761 Node* result = _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5762 set_result(result); |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5763 return true; |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5764 } |
b800986664f4
7088419: Use x86 Hardware CRC32 Instruction with java.util.zip.CRC32
drchase
parents:
10405
diff
changeset
|
5765 |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5766 //----------------------------inline_reference_get---------------------------- |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5767 // public T java.lang.ref.Reference.get(); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5768 bool LibraryCallKit::inline_reference_get() { |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5769 const int referent_offset = java_lang_ref_Reference::referent_offset; |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5770 guarantee(referent_offset > 0, "should have already been set"); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5771 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5772 // Get the argument: |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5773 Node* reference_obj = null_check_receiver(); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5774 if (stopped()) return true; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5775 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5776 Node* adr = basic_plus_adr(reference_obj, reference_obj, referent_offset); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5777 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5778 ciInstanceKlass* klass = env()->Object_klass(); |
e1162778c1c8
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5779 const TypeOopPtr* object_type = TypeOopPtr::make_from_klass(klass); |
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5780 |
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5781 Node* no_ctrl = NULL; |
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5782 Node* result = make_load(no_ctrl, adr, object_type, T_OBJECT); |
3249
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5783 |
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5784 // Use the pre-barrier to record the value in the referent field |
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5785 pre_barrier(false /* do_load */, |
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|
5786 control(), |
3258
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5787 NULL /* obj */, NULL /* adr */, max_juint /* alias_idx */, NULL /* val */, NULL /* val_type */, |
3249
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5788 result /* pre_val */, |
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5789 T_OBJECT); |
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5790 |
6615
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5791 // Add memory barrier to prevent commoning reads from this field |
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5792 // across safepoint since GC can change its value. |
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5793 insert_mem_bar(Op_MemBarCPUOrder); |
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5794 |
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5795 set_result(result); |
3249
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5796 return true; |
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5797 } |
6894 | 5798 |
5799 | |
5800 Node * LibraryCallKit::load_field_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, | |
5801 bool is_exact=true, bool is_static=false) { | |
5802 | |
5803 const TypeInstPtr* tinst = _gvn.type(fromObj)->isa_instptr(); | |
5804 assert(tinst != NULL, "obj is null"); | |
5805 assert(tinst->klass()->is_loaded(), "obj is not loaded"); | |
5806 assert(!is_exact || tinst->klass_is_exact(), "klass not exact"); | |
5807 | |
5808 ciField* field = tinst->klass()->as_instance_klass()->get_field_by_name(ciSymbol::make(fieldName), | |
5809 ciSymbol::make(fieldTypeString), | |
5810 is_static); | |
5811 if (field == NULL) return (Node *) NULL; | |
5812 assert (field != NULL, "undefined field"); | |
5813 | |
5814 // Next code copied from Parse::do_get_xxx(): | |
5815 | |
5816 // Compute address and memory type. | |
5817 int offset = field->offset_in_bytes(); | |
5818 bool is_vol = field->is_volatile(); | |
5819 ciType* field_klass = field->type(); | |
5820 assert(field_klass->is_loaded(), "should be loaded"); | |
5821 const TypePtr* adr_type = C->alias_type(field)->adr_type(); | |
5822 Node *adr = basic_plus_adr(fromObj, fromObj, offset); | |
5823 BasicType bt = field->layout_type(); | |
5824 | |
5825 // Build the resultant type of the load | |
5826 const Type *type = TypeOopPtr::make_from_klass(field_klass->as_klass()); | |
5827 | |
5828 // Build the load. | |
5829 Node* loadedField = make_load(NULL, adr, type, bt, adr_type, is_vol); | |
5830 return loadedField; | |
5831 } | |
5832 | |
5833 | |
5834 //------------------------------inline_aescrypt_Block----------------------- | |
5835 bool LibraryCallKit::inline_aescrypt_Block(vmIntrinsics::ID id) { | |
5836 address stubAddr; | |
5837 const char *stubName; | |
5838 assert(UseAES, "need AES instruction support"); | |
5839 | |
5840 switch(id) { | |
5841 case vmIntrinsics::_aescrypt_encryptBlock: | |
5842 stubAddr = StubRoutines::aescrypt_encryptBlock(); | |
5843 stubName = "aescrypt_encryptBlock"; | |
5844 break; | |
5845 case vmIntrinsics::_aescrypt_decryptBlock: | |
5846 stubAddr = StubRoutines::aescrypt_decryptBlock(); | |
5847 stubName = "aescrypt_decryptBlock"; | |
5848 break; | |
5849 } | |
5850 if (stubAddr == NULL) return false; | |
5851 | |
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5852 Node* aescrypt_object = argument(0); |
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5853 Node* src = argument(1); |
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5854 Node* src_offset = argument(2); |
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5855 Node* dest = argument(3); |
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5856 Node* dest_offset = argument(4); |
6894 | 5857 |
5858 // (1) src and dest are arrays. | |
5859 const Type* src_type = src->Value(&_gvn); | |
5860 const Type* dest_type = dest->Value(&_gvn); | |
5861 const TypeAryPtr* top_src = src_type->isa_aryptr(); | |
5862 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); | |
5863 assert (top_src != NULL && top_src->klass() != NULL && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); | |
5864 | |
5865 // for the quick and dirty code we will skip all the checks. | |
5866 // we are just trying to get the call to be generated. | |
5867 Node* src_start = src; | |
5868 Node* dest_start = dest; | |
5869 if (src_offset != NULL || dest_offset != NULL) { | |
5870 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5871 src_start = array_element_address(src, src_offset, T_BYTE); | |
5872 dest_start = array_element_address(dest, dest_offset, T_BYTE); | |
5873 } | |
5874 | |
5875 // now need to get the start of its expanded key array | |
5876 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java | |
5877 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); | |
5878 if (k_start == NULL) return false; | |
5879 | |
17670 | 5880 if (Matcher::pass_original_key_for_aes()) { |
5881 // on SPARC we need to pass the original key since key expansion needs to happen in intrinsics due to | |
5882 // compatibility issues between Java key expansion and SPARC crypto instructions | |
5883 Node* original_k_start = get_original_key_start_from_aescrypt_object(aescrypt_object); | |
5884 if (original_k_start == NULL) return false; | |
5885 | |
5886 // Call the stub. | |
5887 make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::aescrypt_block_Type(), | |
5888 stubAddr, stubName, TypePtr::BOTTOM, | |
5889 src_start, dest_start, k_start, original_k_start); | |
5890 } else { | |
5891 // Call the stub. | |
5892 make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::aescrypt_block_Type(), | |
5893 stubAddr, stubName, TypePtr::BOTTOM, | |
5894 src_start, dest_start, k_start); | |
5895 } | |
6894 | 5896 |
5897 return true; | |
5898 } | |
5899 | |
5900 //------------------------------inline_cipherBlockChaining_AESCrypt----------------------- | |
5901 bool LibraryCallKit::inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id) { | |
5902 address stubAddr; | |
5903 const char *stubName; | |
5904 | |
5905 assert(UseAES, "need AES instruction support"); | |
5906 | |
5907 switch(id) { | |
5908 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
5909 stubAddr = StubRoutines::cipherBlockChaining_encryptAESCrypt(); | |
5910 stubName = "cipherBlockChaining_encryptAESCrypt"; | |
5911 break; | |
5912 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
5913 stubAddr = StubRoutines::cipherBlockChaining_decryptAESCrypt(); | |
5914 stubName = "cipherBlockChaining_decryptAESCrypt"; | |
5915 break; | |
5916 } | |
5917 if (stubAddr == NULL) return false; | |
5918 | |
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5919 Node* cipherBlockChaining_object = argument(0); |
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5920 Node* src = argument(1); |
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5921 Node* src_offset = argument(2); |
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5922 Node* len = argument(3); |
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5923 Node* dest = argument(4); |
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5924 Node* dest_offset = argument(5); |
6894 | 5925 |
5926 // (1) src and dest are arrays. | |
5927 const Type* src_type = src->Value(&_gvn); | |
5928 const Type* dest_type = dest->Value(&_gvn); | |
5929 const TypeAryPtr* top_src = src_type->isa_aryptr(); | |
5930 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); | |
5931 assert (top_src != NULL && top_src->klass() != NULL | |
5932 && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); | |
5933 | |
5934 // checks are the responsibility of the caller | |
5935 Node* src_start = src; | |
5936 Node* dest_start = dest; | |
5937 if (src_offset != NULL || dest_offset != NULL) { | |
5938 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5939 src_start = array_element_address(src, src_offset, T_BYTE); | |
5940 dest_start = array_element_address(dest, dest_offset, T_BYTE); | |
5941 } | |
5942 | |
5943 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object | |
5944 // (because of the predicated logic executed earlier). | |
5945 // so we cast it here safely. | |
5946 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java | |
5947 | |
5948 Node* embeddedCipherObj = load_field_from_object(cipherBlockChaining_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); | |
5949 if (embeddedCipherObj == NULL) return false; | |
5950 | |
5951 // cast it to what we know it will be at runtime | |
5952 const TypeInstPtr* tinst = _gvn.type(cipherBlockChaining_object)->isa_instptr(); | |
5953 assert(tinst != NULL, "CBC obj is null"); | |
5954 assert(tinst->klass()->is_loaded(), "CBC obj is not loaded"); | |
5955 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); | |
5956 if (!klass_AESCrypt->is_loaded()) return false; | |
5957 | |
5958 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); | |
5959 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt); | |
5960 const TypeOopPtr* xtype = aklass->as_instance_type(); | |
5961 Node* aescrypt_object = new(C) CheckCastPPNode(control(), embeddedCipherObj, xtype); | |
5962 aescrypt_object = _gvn.transform(aescrypt_object); | |
5963 | |
5964 // we need to get the start of the aescrypt_object's expanded key array | |
5965 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); | |
5966 if (k_start == NULL) return false; | |
5967 | |
5968 // similarly, get the start address of the r vector | |
5969 Node* objRvec = load_field_from_object(cipherBlockChaining_object, "r", "[B", /*is_exact*/ false); | |
5970 if (objRvec == NULL) return false; | |
5971 Node* r_start = array_element_address(objRvec, intcon(0), T_BYTE); | |
5972 | |
17670 | 5973 Node* cbcCrypt; |
5974 if (Matcher::pass_original_key_for_aes()) { | |
5975 // on SPARC we need to pass the original key since key expansion needs to happen in intrinsics due to | |
5976 // compatibility issues between Java key expansion and SPARC crypto instructions | |
5977 Node* original_k_start = get_original_key_start_from_aescrypt_object(aescrypt_object); | |
5978 if (original_k_start == NULL) return false; | |
5979 | |
5980 // Call the stub, passing src_start, dest_start, k_start, r_start, src_len and original_k_start | |
5981 cbcCrypt = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5982 OptoRuntime::cipherBlockChaining_aescrypt_Type(), | |
5983 stubAddr, stubName, TypePtr::BOTTOM, | |
5984 src_start, dest_start, k_start, r_start, len, original_k_start); | |
5985 } else { | |
5986 // Call the stub, passing src_start, dest_start, k_start, r_start and src_len | |
5987 cbcCrypt = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5988 OptoRuntime::cipherBlockChaining_aescrypt_Type(), | |
5989 stubAddr, stubName, TypePtr::BOTTOM, | |
5990 src_start, dest_start, k_start, r_start, len); | |
5991 } | |
5992 | |
5993 // return cipher length (int) | |
5994 Node* retvalue = _gvn.transform(new (C) ProjNode(cbcCrypt, TypeFunc::Parms)); | |
5995 set_result(retvalue); | |
6894 | 5996 return true; |
5997 } | |
5998 | |
5999 //------------------------------get_key_start_from_aescrypt_object----------------------- | |
6000 Node * LibraryCallKit::get_key_start_from_aescrypt_object(Node *aescrypt_object) { | |
6001 Node* objAESCryptKey = load_field_from_object(aescrypt_object, "K", "[I", /*is_exact*/ false); | |
6002 assert (objAESCryptKey != NULL, "wrong version of com.sun.crypto.provider.AESCrypt"); | |
6003 if (objAESCryptKey == NULL) return (Node *) NULL; | |
6004 | |
6005 // now have the array, need to get the start address of the K array | |
6006 Node* k_start = array_element_address(objAESCryptKey, intcon(0), T_INT); | |
6007 return k_start; | |
6008 } | |
6009 | |
17670 | 6010 //------------------------------get_original_key_start_from_aescrypt_object----------------------- |
6011 Node * LibraryCallKit::get_original_key_start_from_aescrypt_object(Node *aescrypt_object) { | |
6012 Node* objAESCryptKey = load_field_from_object(aescrypt_object, "lastKey", "[B", /*is_exact*/ false); | |
6013 assert (objAESCryptKey != NULL, "wrong version of com.sun.crypto.provider.AESCrypt"); | |
6014 if (objAESCryptKey == NULL) return (Node *) NULL; | |
6015 | |
6016 // now have the array, need to get the start address of the lastKey array | |
6017 Node* original_k_start = array_element_address(objAESCryptKey, intcon(0), T_BYTE); | |
6018 return original_k_start; | |
6019 } | |
6020 | |
6894 | 6021 //----------------------------inline_cipherBlockChaining_AESCrypt_predicate---------------------------- |
6022 // Return node representing slow path of predicate check. | |
6023 // the pseudo code we want to emulate with this predicate is: | |
6024 // for encryption: | |
6025 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath | |
6026 // for decryption: | |
6027 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath | |
6028 // note cipher==plain is more conservative than the original java code but that's OK | |
6029 // | |
6030 Node* LibraryCallKit::inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting) { | |
6031 // First, check receiver for NULL since it is virtual method. | |
6032 Node* objCBC = argument(0); | |
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6033 objCBC = null_check(objCBC); |
6894 | 6034 |
6035 if (stopped()) return NULL; // Always NULL | |
6036 | |
6037 // Load embeddedCipher field of CipherBlockChaining object. | |
6038 Node* embeddedCipherObj = load_field_from_object(objCBC, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); | |
6039 | |
6040 // get AESCrypt klass for instanceOf check | |
6041 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point | |
6042 // will have same classloader as CipherBlockChaining object | |
6043 const TypeInstPtr* tinst = _gvn.type(objCBC)->isa_instptr(); | |
6044 assert(tinst != NULL, "CBCobj is null"); | |
6045 assert(tinst->klass()->is_loaded(), "CBCobj is not loaded"); | |
6046 | |
6047 // we want to do an instanceof comparison against the AESCrypt class | |
6048 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); | |
6049 if (!klass_AESCrypt->is_loaded()) { | |
6050 // if AESCrypt is not even loaded, we never take the intrinsic fast path | |
6051 Node* ctrl = control(); | |
6052 set_control(top()); // no regular fast path | |
6053 return ctrl; | |
6054 } | |
6055 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); | |
6056 | |
6057 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt))); | |
6058 Node* cmp_instof = _gvn.transform(new (C) CmpINode(instof, intcon(1))); | |
6059 Node* bool_instof = _gvn.transform(new (C) BoolNode(cmp_instof, BoolTest::ne)); | |
6060 | |
6061 Node* instof_false = generate_guard(bool_instof, NULL, PROB_MIN); | |
6062 | |
6063 // for encryption, we are done | |
6064 if (!decrypting) | |
6065 return instof_false; // even if it is NULL | |
6066 | |
6067 // for decryption, we need to add a further check to avoid | |
6068 // taking the intrinsic path when cipher and plain are the same | |
6069 // see the original java code for why. | |
6070 RegionNode* region = new(C) RegionNode(3); | |
6071 region->init_req(1, instof_false); | |
6072 Node* src = argument(1); | |
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6073 Node* dest = argument(4); |
6894 | 6074 Node* cmp_src_dest = _gvn.transform(new (C) CmpPNode(src, dest)); |
6075 Node* bool_src_dest = _gvn.transform(new (C) BoolNode(cmp_src_dest, BoolTest::eq)); | |
6076 Node* src_dest_conjoint = generate_guard(bool_src_dest, NULL, PROB_MIN); | |
6077 region->init_req(2, src_dest_conjoint); | |
6078 | |
6079 record_for_igvn(region); | |
6080 return _gvn.transform(region); | |
6081 } |