Mercurial > hg > truffle
annotate src/share/vm/opto/library_call.cpp @ 7423:620e502e3f47
Merge
author | vlivanov |
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date | Tue, 18 Dec 2012 08:19:53 -0800 |
parents | ad5dd04754ee eb409f2f146e |
children | 1e41b0bc58a0 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1999, 2012, 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" | |
35 #include "opto/mulnode.hpp" | |
36 #include "opto/parse.hpp" | |
37 #include "opto/runtime.hpp" | |
38 #include "opto/subnode.hpp" | |
39 #include "prims/nativeLookup.hpp" | |
40 #include "runtime/sharedRuntime.hpp" | |
0 | 41 |
42 class LibraryIntrinsic : public InlineCallGenerator { | |
43 // Extend the set of intrinsics known to the runtime: | |
44 public: | |
45 private: | |
46 bool _is_virtual; | |
6894 | 47 bool _is_predicted; |
0 | 48 vmIntrinsics::ID _intrinsic_id; |
49 | |
50 public: | |
6894 | 51 LibraryIntrinsic(ciMethod* m, bool is_virtual, bool is_predicted, vmIntrinsics::ID id) |
0 | 52 : InlineCallGenerator(m), |
53 _is_virtual(is_virtual), | |
6894 | 54 _is_predicted(is_predicted), |
0 | 55 _intrinsic_id(id) |
56 { | |
57 } | |
58 virtual bool is_intrinsic() const { return true; } | |
59 virtual bool is_virtual() const { return _is_virtual; } | |
6894 | 60 virtual bool is_predicted() const { return _is_predicted; } |
0 | 61 virtual JVMState* generate(JVMState* jvms); |
6894 | 62 virtual Node* generate_predicate(JVMState* jvms); |
0 | 63 vmIntrinsics::ID intrinsic_id() const { return _intrinsic_id; } |
64 }; | |
65 | |
66 | |
67 // Local helper class for LibraryIntrinsic: | |
68 class LibraryCallKit : public GraphKit { | |
69 private: | |
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70 LibraryIntrinsic* _intrinsic; // the library intrinsic being called |
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71 Node* _result; // the result node, if any |
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72 int _reexecute_sp; // the stack pointer when bytecode needs to be reexecuted |
0 | 73 |
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74 const TypeOopPtr* sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type, bool is_native_ptr = false); |
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75 |
0 | 76 public: |
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77 LibraryCallKit(JVMState* jvms, LibraryIntrinsic* intrinsic) |
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78 : GraphKit(jvms), |
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79 _intrinsic(intrinsic), |
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80 _result(NULL) |
0 | 81 { |
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82 // Check if this is a root compile. In that case we don't have a caller. |
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83 if (!jvms->has_method()) { |
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84 _reexecute_sp = sp(); |
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85 } else { |
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86 // Find out how many arguments the interpreter needs when deoptimizing |
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87 // and save the stack pointer value so it can used by uncommon_trap. |
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88 // We find the argument count by looking at the declared signature. |
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89 bool ignored_will_link; |
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90 ciSignature* declared_signature = NULL; |
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91 ciMethod* ignored_callee = caller()->get_method_at_bci(bci(), ignored_will_link, &declared_signature); |
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92 const int nargs = declared_signature->arg_size_for_bc(caller()->java_code_at_bci(bci())); |
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93 _reexecute_sp = sp() + nargs; // "push" arguments back on stack |
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94 } |
0 | 95 } |
96 | |
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97 virtual LibraryCallKit* is_LibraryCallKit() const { return (LibraryCallKit*)this; } |
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98 |
0 | 99 ciMethod* caller() const { return jvms()->method(); } |
100 int bci() const { return jvms()->bci(); } | |
101 LibraryIntrinsic* intrinsic() const { return _intrinsic; } | |
102 vmIntrinsics::ID intrinsic_id() const { return _intrinsic->intrinsic_id(); } | |
103 ciMethod* callee() const { return _intrinsic->method(); } | |
104 | |
105 bool try_to_inline(); | |
6894 | 106 Node* try_to_predicate(); |
0 | 107 |
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108 void push_result() { |
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109 // Push the result onto the stack. |
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110 if (!stopped() && result() != NULL) { |
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111 BasicType bt = result()->bottom_type()->basic_type(); |
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112 push_node(bt, result()); |
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113 } |
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114 } |
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115 |
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116 private: |
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117 void fatal_unexpected_iid(vmIntrinsics::ID iid) { |
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118 fatal(err_msg_res("unexpected intrinsic %d: %s", iid, vmIntrinsics::name_at(iid))); |
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119 } |
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120 |
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121 void set_result(Node* n) { assert(_result == NULL, "only set once"); _result = n; } |
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122 void set_result(RegionNode* region, PhiNode* value); |
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123 Node* result() { return _result; } |
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124 |
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125 virtual int reexecute_sp() { return _reexecute_sp; } |
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126 |
0 | 127 // Helper functions to inline natives |
128 Node* generate_guard(Node* test, RegionNode* region, float true_prob); | |
129 Node* generate_slow_guard(Node* test, RegionNode* region); | |
130 Node* generate_fair_guard(Node* test, RegionNode* region); | |
131 Node* generate_negative_guard(Node* index, RegionNode* region, | |
132 // resulting CastII of index: | |
133 Node* *pos_index = NULL); | |
134 Node* generate_nonpositive_guard(Node* index, bool never_negative, | |
135 // resulting CastII of index: | |
136 Node* *pos_index = NULL); | |
137 Node* generate_limit_guard(Node* offset, Node* subseq_length, | |
138 Node* array_length, | |
139 RegionNode* region); | |
140 Node* generate_current_thread(Node* &tls_output); | |
141 address basictype2arraycopy(BasicType t, Node *src_offset, Node *dest_offset, | |
2324 | 142 bool disjoint_bases, const char* &name, bool dest_uninitialized); |
0 | 143 Node* load_mirror_from_klass(Node* klass); |
144 Node* load_klass_from_mirror_common(Node* mirror, bool never_see_null, | |
145 RegionNode* region, int null_path, | |
146 int offset); | |
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147 Node* load_klass_from_mirror(Node* mirror, bool never_see_null, |
0 | 148 RegionNode* region, int null_path) { |
149 int offset = java_lang_Class::klass_offset_in_bytes(); | |
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150 return load_klass_from_mirror_common(mirror, never_see_null, |
0 | 151 region, null_path, |
152 offset); | |
153 } | |
154 Node* load_array_klass_from_mirror(Node* mirror, bool never_see_null, | |
155 RegionNode* region, int null_path) { | |
156 int offset = java_lang_Class::array_klass_offset_in_bytes(); | |
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157 return load_klass_from_mirror_common(mirror, never_see_null, |
0 | 158 region, null_path, |
159 offset); | |
160 } | |
161 Node* generate_access_flags_guard(Node* kls, | |
162 int modifier_mask, int modifier_bits, | |
163 RegionNode* region); | |
164 Node* generate_interface_guard(Node* kls, RegionNode* region); | |
165 Node* generate_array_guard(Node* kls, RegionNode* region) { | |
166 return generate_array_guard_common(kls, region, false, false); | |
167 } | |
168 Node* generate_non_array_guard(Node* kls, RegionNode* region) { | |
169 return generate_array_guard_common(kls, region, false, true); | |
170 } | |
171 Node* generate_objArray_guard(Node* kls, RegionNode* region) { | |
172 return generate_array_guard_common(kls, region, true, false); | |
173 } | |
174 Node* generate_non_objArray_guard(Node* kls, RegionNode* region) { | |
175 return generate_array_guard_common(kls, region, true, true); | |
176 } | |
177 Node* generate_array_guard_common(Node* kls, RegionNode* region, | |
178 bool obj_array, bool not_array); | |
179 Node* generate_virtual_guard(Node* obj_klass, RegionNode* slow_region); | |
180 CallJavaNode* generate_method_call(vmIntrinsics::ID method_id, | |
181 bool is_virtual = false, bool is_static = false); | |
182 CallJavaNode* generate_method_call_static(vmIntrinsics::ID method_id) { | |
183 return generate_method_call(method_id, false, true); | |
184 } | |
185 CallJavaNode* generate_method_call_virtual(vmIntrinsics::ID method_id) { | |
186 return generate_method_call(method_id, true, false); | |
187 } | |
6894 | 188 Node * load_field_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, bool is_exact, bool is_static); |
0 | 189 |
6057 | 190 Node* make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2); |
191 Node* make_string_method_node(int opcode, Node* str1, Node* str2); | |
0 | 192 bool inline_string_compareTo(); |
193 bool inline_string_indexOf(); | |
194 Node* string_indexOf(Node* string_object, ciTypeArray* target_array, jint offset, jint cache_i, jint md2_i); | |
681 | 195 bool inline_string_equals(); |
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196 Node* round_double_node(Node* n); |
0 | 197 bool runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName); |
198 bool inline_math_native(vmIntrinsics::ID id); | |
199 bool inline_trig(vmIntrinsics::ID id); | |
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200 bool inline_math(vmIntrinsics::ID id); |
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201 bool inline_exp(); |
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202 bool inline_pow(); |
6205 | 203 void finish_pow_exp(Node* result, Node* x, Node* y, const TypeFunc* call_type, address funcAddr, const char* funcName); |
0 | 204 bool inline_min_max(vmIntrinsics::ID id); |
205 Node* generate_min_max(vmIntrinsics::ID id, Node* x, Node* y); | |
206 // This returns Type::AnyPtr, RawPtr, or OopPtr. | |
207 int classify_unsafe_addr(Node* &base, Node* &offset); | |
208 Node* make_unsafe_address(Node* base, Node* offset); | |
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209 // Helper for inline_unsafe_access. |
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210 // Generates the guards that check whether the result of |
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211 // Unsafe.getObject should be recorded in an SATB log buffer. |
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212 void insert_pre_barrier(Node* base_oop, Node* offset, Node* pre_val, bool need_mem_bar); |
0 | 213 bool inline_unsafe_access(bool is_native_ptr, bool is_store, BasicType type, bool is_volatile); |
214 bool inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static); | |
215 bool inline_unsafe_allocate(); | |
216 bool inline_unsafe_copyMemory(); | |
217 bool inline_native_currentThread(); | |
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218 #ifdef TRACE_HAVE_INTRINSICS |
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219 bool inline_native_classID(); |
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220 bool inline_native_threadID(); |
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221 #endif |
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222 bool inline_native_time_funcs(address method, const char* funcName); |
0 | 223 bool inline_native_isInterrupted(); |
224 bool inline_native_Class_query(vmIntrinsics::ID id); | |
225 bool inline_native_subtype_check(); | |
226 | |
227 bool inline_native_newArray(); | |
228 bool inline_native_getLength(); | |
229 bool inline_array_copyOf(bool is_copyOfRange); | |
169
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230 bool inline_array_equals(); |
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231 void copy_to_clone(Node* obj, Node* alloc_obj, Node* obj_size, bool is_array, bool card_mark); |
0 | 232 bool inline_native_clone(bool is_virtual); |
233 bool inline_native_Reflection_getCallerClass(); | |
234 bool is_method_invoke_or_aux_frame(JVMState* jvms); | |
235 // Helper function for inlining native object hash method | |
236 bool inline_native_hashcode(bool is_virtual, bool is_static); | |
237 bool inline_native_getClass(); | |
238 | |
239 // Helper functions for inlining arraycopy | |
240 bool inline_arraycopy(); | |
241 void generate_arraycopy(const TypePtr* adr_type, | |
242 BasicType basic_elem_type, | |
243 Node* src, Node* src_offset, | |
244 Node* dest, Node* dest_offset, | |
245 Node* copy_length, | |
246 bool disjoint_bases = false, | |
247 bool length_never_negative = false, | |
248 RegionNode* slow_region = NULL); | |
249 AllocateArrayNode* tightly_coupled_allocation(Node* ptr, | |
250 RegionNode* slow_region); | |
251 void generate_clear_array(const TypePtr* adr_type, | |
252 Node* dest, | |
253 BasicType basic_elem_type, | |
254 Node* slice_off, | |
255 Node* slice_len, | |
256 Node* slice_end); | |
257 bool generate_block_arraycopy(const TypePtr* adr_type, | |
258 BasicType basic_elem_type, | |
259 AllocateNode* alloc, | |
260 Node* src, Node* src_offset, | |
261 Node* dest, Node* dest_offset, | |
2324 | 262 Node* dest_size, bool dest_uninitialized); |
0 | 263 void generate_slow_arraycopy(const TypePtr* adr_type, |
264 Node* src, Node* src_offset, | |
265 Node* dest, Node* dest_offset, | |
2324 | 266 Node* copy_length, bool dest_uninitialized); |
0 | 267 Node* generate_checkcast_arraycopy(const TypePtr* adr_type, |
268 Node* dest_elem_klass, | |
269 Node* src, Node* src_offset, | |
270 Node* dest, Node* dest_offset, | |
2324 | 271 Node* copy_length, bool dest_uninitialized); |
0 | 272 Node* generate_generic_arraycopy(const TypePtr* adr_type, |
273 Node* src, Node* src_offset, | |
274 Node* dest, Node* dest_offset, | |
2324 | 275 Node* copy_length, bool dest_uninitialized); |
0 | 276 void generate_unchecked_arraycopy(const TypePtr* adr_type, |
277 BasicType basic_elem_type, | |
278 bool disjoint_bases, | |
279 Node* src, Node* src_offset, | |
280 Node* dest, Node* dest_offset, | |
2324 | 281 Node* copy_length, bool dest_uninitialized); |
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282 typedef enum { LS_xadd, LS_xchg, LS_cmpxchg } LoadStoreKind; |
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283 bool inline_unsafe_load_store(BasicType type, LoadStoreKind kind); |
0 | 284 bool inline_unsafe_ordered_store(BasicType type); |
285 bool inline_fp_conversions(vmIntrinsics::ID id); | |
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286 bool inline_number_methods(vmIntrinsics::ID id); |
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287 bool inline_reference_get(); |
6894 | 288 bool inline_aescrypt_Block(vmIntrinsics::ID id); |
289 bool inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id); | |
290 Node* inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting); | |
291 Node* get_key_start_from_aescrypt_object(Node* aescrypt_object); | |
0 | 292 }; |
293 | |
294 | |
295 //---------------------------make_vm_intrinsic---------------------------- | |
296 CallGenerator* Compile::make_vm_intrinsic(ciMethod* m, bool is_virtual) { | |
297 vmIntrinsics::ID id = m->intrinsic_id(); | |
298 assert(id != vmIntrinsics::_none, "must be a VM intrinsic"); | |
299 | |
300 if (DisableIntrinsic[0] != '\0' | |
301 && strstr(DisableIntrinsic, vmIntrinsics::name_at(id)) != NULL) { | |
302 // disabled by a user request on the command line: | |
303 // example: -XX:DisableIntrinsic=_hashCode,_getClass | |
304 return NULL; | |
305 } | |
306 | |
307 if (!m->is_loaded()) { | |
308 // do not attempt to inline unloaded methods | |
309 return NULL; | |
310 } | |
311 | |
312 // Only a few intrinsics implement a virtual dispatch. | |
313 // They are expensive calls which are also frequently overridden. | |
314 if (is_virtual) { | |
315 switch (id) { | |
316 case vmIntrinsics::_hashCode: | |
317 case vmIntrinsics::_clone: | |
318 // OK, Object.hashCode and Object.clone intrinsics come in both flavors | |
319 break; | |
320 default: | |
321 return NULL; | |
322 } | |
323 } | |
324 | |
325 // -XX:-InlineNatives disables nearly all intrinsics: | |
326 if (!InlineNatives) { | |
327 switch (id) { | |
328 case vmIntrinsics::_indexOf: | |
329 case vmIntrinsics::_compareTo: | |
681 | 330 case vmIntrinsics::_equals: |
169
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331 case vmIntrinsics::_equalsC: |
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332 case vmIntrinsics::_getAndAddInt: |
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333 case vmIntrinsics::_getAndAddLong: |
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334 case vmIntrinsics::_getAndSetInt: |
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335 case vmIntrinsics::_getAndSetLong: |
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336 case vmIntrinsics::_getAndSetObject: |
0 | 337 break; // InlineNatives does not control String.compareTo |
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338 case vmIntrinsics::_Reference_get: |
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339 break; // InlineNatives does not control Reference.get |
0 | 340 default: |
341 return NULL; | |
342 } | |
343 } | |
344 | |
6894 | 345 bool is_predicted = false; |
346 | |
0 | 347 switch (id) { |
348 case vmIntrinsics::_compareTo: | |
349 if (!SpecialStringCompareTo) return NULL; | |
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350 if (!Matcher::match_rule_supported(Op_StrComp)) return NULL; |
0 | 351 break; |
352 case vmIntrinsics::_indexOf: | |
353 if (!SpecialStringIndexOf) return NULL; | |
354 break; | |
681 | 355 case vmIntrinsics::_equals: |
356 if (!SpecialStringEquals) return NULL; | |
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357 if (!Matcher::match_rule_supported(Op_StrEquals)) return NULL; |
681 | 358 break; |
169
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359 case vmIntrinsics::_equalsC: |
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360 if (!SpecialArraysEquals) return NULL; |
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361 if (!Matcher::match_rule_supported(Op_AryEq)) return NULL; |
169
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362 break; |
0 | 363 case vmIntrinsics::_arraycopy: |
364 if (!InlineArrayCopy) return NULL; | |
365 break; | |
366 case vmIntrinsics::_copyMemory: | |
367 if (StubRoutines::unsafe_arraycopy() == NULL) return NULL; | |
368 if (!InlineArrayCopy) return NULL; | |
369 break; | |
370 case vmIntrinsics::_hashCode: | |
371 if (!InlineObjectHash) return NULL; | |
372 break; | |
373 case vmIntrinsics::_clone: | |
374 case vmIntrinsics::_copyOf: | |
375 case vmIntrinsics::_copyOfRange: | |
376 if (!InlineObjectCopy) return NULL; | |
377 // These also use the arraycopy intrinsic mechanism: | |
378 if (!InlineArrayCopy) return NULL; | |
379 break; | |
380 case vmIntrinsics::_checkIndex: | |
381 // We do not intrinsify this. The optimizer does fine with it. | |
382 return NULL; | |
383 | |
384 case vmIntrinsics::_getCallerClass: | |
385 if (!UseNewReflection) return NULL; | |
386 if (!InlineReflectionGetCallerClass) return NULL; | |
387 if (!JDK_Version::is_gte_jdk14x_version()) return NULL; | |
388 break; | |
389 | |
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390 case vmIntrinsics::_bitCount_i: |
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391 if (!Matcher::match_rule_supported(Op_PopCountI)) return NULL; |
5927
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392 break; |
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393 |
643
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394 case vmIntrinsics::_bitCount_l: |
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395 if (!Matcher::match_rule_supported(Op_PopCountL)) return NULL; |
5927
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396 break; |
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397 |
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398 case vmIntrinsics::_numberOfLeadingZeros_i: |
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399 if (!Matcher::match_rule_supported(Op_CountLeadingZerosI)) return NULL; |
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400 break; |
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401 |
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402 case vmIntrinsics::_numberOfLeadingZeros_l: |
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403 if (!Matcher::match_rule_supported(Op_CountLeadingZerosL)) return NULL; |
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404 break; |
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|
405 |
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406 case vmIntrinsics::_numberOfTrailingZeros_i: |
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407 if (!Matcher::match_rule_supported(Op_CountTrailingZerosI)) return NULL; |
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408 break; |
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|
409 |
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410 case vmIntrinsics::_numberOfTrailingZeros_l: |
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411 if (!Matcher::match_rule_supported(Op_CountTrailingZerosL)) return NULL; |
643
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6378821: bitCount() should use POPC on SPARC processors and AMD+10h
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412 break; |
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413 |
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414 case vmIntrinsics::_reverseBytes_c: |
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415 if (!Matcher::match_rule_supported(Op_ReverseBytesUS)) return NULL; |
7194
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416 break; |
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417 case vmIntrinsics::_reverseBytes_s: |
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418 if (!Matcher::match_rule_supported(Op_ReverseBytesS)) return NULL; |
7194
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419 break; |
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420 case vmIntrinsics::_reverseBytes_i: |
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421 if (!Matcher::match_rule_supported(Op_ReverseBytesI)) return NULL; |
7194
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422 break; |
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423 case vmIntrinsics::_reverseBytes_l: |
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424 if (!Matcher::match_rule_supported(Op_ReverseBytesL)) return NULL; |
7194
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425 break; |
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|
426 |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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427 case vmIntrinsics::_Reference_get: |
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428 // Use the intrinsic version of Reference.get() so that the value in |
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7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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429 // 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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430 // 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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431 // across safepoint since GC can change it value. |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
432 break; |
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changeset
|
433 |
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434 case vmIntrinsics::_compareAndSwapObject: |
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435 #ifdef _LP64 |
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436 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapP)) return NULL; |
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437 #endif |
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|
438 break; |
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|
439 |
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440 case vmIntrinsics::_compareAndSwapLong: |
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441 if (!Matcher::match_rule_supported(Op_CompareAndSwapL)) return NULL; |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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442 break; |
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443 |
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444 case vmIntrinsics::_getAndAddInt: |
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445 if (!Matcher::match_rule_supported(Op_GetAndAddI)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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446 break; |
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447 |
7eca5de9e0b6
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448 case vmIntrinsics::_getAndAddLong: |
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449 if (!Matcher::match_rule_supported(Op_GetAndAddL)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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450 break; |
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|
451 |
7eca5de9e0b6
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452 case vmIntrinsics::_getAndSetInt: |
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453 if (!Matcher::match_rule_supported(Op_GetAndSetI)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
454 break; |
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changeset
|
455 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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456 case vmIntrinsics::_getAndSetLong: |
7eca5de9e0b6
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457 if (!Matcher::match_rule_supported(Op_GetAndSetL)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
458 break; |
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|
459 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
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460 case vmIntrinsics::_getAndSetObject: |
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461 #ifdef _LP64 |
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462 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetP)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
463 if (UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetN)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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changeset
|
464 break; |
7eca5de9e0b6
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465 #else |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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466 if (!Matcher::match_rule_supported(Op_GetAndSetP)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
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|
467 break; |
7eca5de9e0b6
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|
468 #endif |
7eca5de9e0b6
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|
469 |
6894 | 470 case vmIntrinsics::_aescrypt_encryptBlock: |
471 case vmIntrinsics::_aescrypt_decryptBlock: | |
472 if (!UseAESIntrinsics) return NULL; | |
473 break; | |
474 | |
475 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
476 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
477 if (!UseAESIntrinsics) return NULL; | |
478 // these two require the predicated logic | |
479 is_predicted = true; | |
480 break; | |
481 | |
0 | 482 default: |
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483 assert(id <= vmIntrinsics::LAST_COMPILER_INLINE, "caller responsibility"); |
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484 assert(id != vmIntrinsics::_Object_init && id != vmIntrinsics::_invoke, "enum out of order?"); |
0 | 485 break; |
486 } | |
487 | |
488 // -XX:-InlineClassNatives disables natives from the Class class. | |
489 // The flag applies to all reflective calls, notably Array.newArray | |
490 // (visible to Java programmers as Array.newInstance). | |
491 if (m->holder()->name() == ciSymbol::java_lang_Class() || | |
492 m->holder()->name() == ciSymbol::java_lang_reflect_Array()) { | |
493 if (!InlineClassNatives) return NULL; | |
494 } | |
495 | |
496 // -XX:-InlineThreadNatives disables natives from the Thread class. | |
497 if (m->holder()->name() == ciSymbol::java_lang_Thread()) { | |
498 if (!InlineThreadNatives) return NULL; | |
499 } | |
500 | |
501 // -XX:-InlineMathNatives disables natives from the Math,Float and Double classes. | |
502 if (m->holder()->name() == ciSymbol::java_lang_Math() || | |
503 m->holder()->name() == ciSymbol::java_lang_Float() || | |
504 m->holder()->name() == ciSymbol::java_lang_Double()) { | |
505 if (!InlineMathNatives) return NULL; | |
506 } | |
507 | |
508 // -XX:-InlineUnsafeOps disables natives from the Unsafe class. | |
509 if (m->holder()->name() == ciSymbol::sun_misc_Unsafe()) { | |
510 if (!InlineUnsafeOps) return NULL; | |
511 } | |
512 | |
6894 | 513 return new LibraryIntrinsic(m, is_virtual, is_predicted, (vmIntrinsics::ID) id); |
0 | 514 } |
515 | |
516 //----------------------register_library_intrinsics----------------------- | |
517 // Initialize this file's data structures, for each Compile instance. | |
518 void Compile::register_library_intrinsics() { | |
519 // Nothing to do here. | |
520 } | |
521 | |
522 JVMState* LibraryIntrinsic::generate(JVMState* jvms) { | |
523 LibraryCallKit kit(jvms, this); | |
524 Compile* C = kit.C; | |
525 int nodes = C->unique(); | |
526 #ifndef PRODUCT | |
527 if ((PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) && Verbose) { | |
528 char buf[1000]; | |
529 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); | |
530 tty->print_cr("Intrinsic %s", str); | |
531 } | |
532 #endif | |
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533 ciMethod* callee = kit.callee(); |
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534 const int bci = kit.bci(); |
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535 |
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536 // Try to inline the intrinsic. |
0 | 537 if (kit.try_to_inline()) { |
538 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { | |
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539 C->print_inlining(callee, jvms->depth() - 1, bci, is_virtual() ? "(intrinsic, virtual)" : "(intrinsic)"); |
0 | 540 } |
541 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked); | |
542 if (C->log()) { | |
543 C->log()->elem("intrinsic id='%s'%s nodes='%d'", | |
544 vmIntrinsics::name_at(intrinsic_id()), | |
545 (is_virtual() ? " virtual='1'" : ""), | |
546 C->unique() - nodes); | |
547 } | |
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548 // Push the result from the inlined method onto the stack. |
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549 kit.push_result(); |
0 | 550 return kit.transfer_exceptions_into_jvms(); |
551 } | |
552 | |
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553 // The intrinsic bailed out |
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554 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { |
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555 if (jvms->has_method()) { |
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556 // Not a root compile. |
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557 const char* msg = is_virtual() ? "failed to inline (intrinsic, virtual)" : "failed to inline (intrinsic)"; |
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558 C->print_inlining(callee, jvms->depth() - 1, bci, msg); |
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559 } else { |
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560 // Root compile |
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561 tty->print("Did not generate intrinsic %s%s at bci:%d in", |
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562 vmIntrinsics::name_at(intrinsic_id()), |
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563 (is_virtual() ? " (virtual)" : ""), bci); |
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564 } |
0 | 565 } |
566 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); | |
567 return NULL; | |
568 } | |
569 | |
6894 | 570 Node* LibraryIntrinsic::generate_predicate(JVMState* jvms) { |
571 LibraryCallKit kit(jvms, this); | |
572 Compile* C = kit.C; | |
573 int nodes = C->unique(); | |
574 #ifndef PRODUCT | |
575 assert(is_predicted(), "sanity"); | |
576 if ((PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) && Verbose) { | |
577 char buf[1000]; | |
578 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); | |
579 tty->print_cr("Predicate for intrinsic %s", str); | |
580 } | |
581 #endif | |
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582 ciMethod* callee = kit.callee(); |
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583 const int bci = kit.bci(); |
6894 | 584 |
585 Node* slow_ctl = kit.try_to_predicate(); | |
586 if (!kit.failing()) { | |
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587 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { |
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588 C->print_inlining(callee, jvms->depth() - 1, bci, is_virtual() ? "(intrinsic, virtual)" : "(intrinsic)"); |
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589 } |
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590 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked); |
6894 | 591 if (C->log()) { |
592 C->log()->elem("predicate_intrinsic id='%s'%s nodes='%d'", | |
593 vmIntrinsics::name_at(intrinsic_id()), | |
594 (is_virtual() ? " virtual='1'" : ""), | |
595 C->unique() - nodes); | |
596 } | |
597 return slow_ctl; // Could be NULL if the check folds. | |
598 } | |
599 | |
600 // The intrinsic bailed out | |
601 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { | |
602 if (jvms->has_method()) { | |
603 // Not a root compile. | |
604 const char* msg = "failed to generate predicate for intrinsic"; | |
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605 C->print_inlining(kit.callee(), jvms->depth() - 1, bci, msg); |
6894 | 606 } else { |
607 // Root compile | |
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608 C->print_inlining_stream()->print("Did not generate predicate for intrinsic %s%s at bci:%d in", |
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609 vmIntrinsics::name_at(intrinsic_id()), |
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610 (is_virtual() ? " (virtual)" : ""), bci); |
6894 | 611 } |
612 } | |
613 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); | |
614 return NULL; | |
615 } | |
616 | |
0 | 617 bool LibraryCallKit::try_to_inline() { |
618 // Handle symbolic names for otherwise undistinguished boolean switches: | |
619 const bool is_store = true; | |
620 const bool is_native_ptr = true; | |
621 const bool is_static = true; | |
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622 const bool is_volatile = true; |
0 | 623 |
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624 if (!jvms()->has_method()) { |
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625 // Root JVMState has a null method. |
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626 assert(map()->memory()->Opcode() == Op_Parm, ""); |
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627 // Insert the memory aliasing node |
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628 set_all_memory(reset_memory()); |
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629 } |
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630 assert(merged_memory(), ""); |
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631 |
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632 |
0 | 633 switch (intrinsic_id()) { |
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634 case vmIntrinsics::_hashCode: return inline_native_hashcode(intrinsic()->is_virtual(), !is_static); |
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635 case vmIntrinsics::_identityHashCode: return inline_native_hashcode(/*!virtual*/ false, is_static); |
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636 case vmIntrinsics::_getClass: return inline_native_getClass(); |
0 | 637 |
638 case vmIntrinsics::_dsin: | |
639 case vmIntrinsics::_dcos: | |
640 case vmIntrinsics::_dtan: | |
641 case vmIntrinsics::_dabs: | |
642 case vmIntrinsics::_datan2: | |
643 case vmIntrinsics::_dsqrt: | |
644 case vmIntrinsics::_dexp: | |
645 case vmIntrinsics::_dlog: | |
646 case vmIntrinsics::_dlog10: | |
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647 case vmIntrinsics::_dpow: return inline_math_native(intrinsic_id()); |
0 | 648 |
649 case vmIntrinsics::_min: | |
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650 case vmIntrinsics::_max: return inline_min_max(intrinsic_id()); |
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651 |
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652 case vmIntrinsics::_arraycopy: return inline_arraycopy(); |
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653 |
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654 case vmIntrinsics::_compareTo: return inline_string_compareTo(); |
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655 case vmIntrinsics::_indexOf: return inline_string_indexOf(); |
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656 case vmIntrinsics::_equals: return inline_string_equals(); |
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657 |
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658 case vmIntrinsics::_getObject: return inline_unsafe_access(!is_native_ptr, !is_store, T_OBJECT, !is_volatile); |
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659 case vmIntrinsics::_getBoolean: return inline_unsafe_access(!is_native_ptr, !is_store, T_BOOLEAN, !is_volatile); |
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660 case vmIntrinsics::_getByte: return inline_unsafe_access(!is_native_ptr, !is_store, T_BYTE, !is_volatile); |
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661 case vmIntrinsics::_getShort: return inline_unsafe_access(!is_native_ptr, !is_store, T_SHORT, !is_volatile); |
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662 case vmIntrinsics::_getChar: return inline_unsafe_access(!is_native_ptr, !is_store, T_CHAR, !is_volatile); |
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663 case vmIntrinsics::_getInt: return inline_unsafe_access(!is_native_ptr, !is_store, T_INT, !is_volatile); |
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664 case vmIntrinsics::_getLong: return inline_unsafe_access(!is_native_ptr, !is_store, T_LONG, !is_volatile); |
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665 case vmIntrinsics::_getFloat: return inline_unsafe_access(!is_native_ptr, !is_store, T_FLOAT, !is_volatile); |
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666 case vmIntrinsics::_getDouble: return inline_unsafe_access(!is_native_ptr, !is_store, T_DOUBLE, !is_volatile); |
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667 |
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668 case vmIntrinsics::_putObject: return inline_unsafe_access(!is_native_ptr, is_store, T_OBJECT, !is_volatile); |
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669 case vmIntrinsics::_putBoolean: return inline_unsafe_access(!is_native_ptr, is_store, T_BOOLEAN, !is_volatile); |
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670 case vmIntrinsics::_putByte: return inline_unsafe_access(!is_native_ptr, is_store, T_BYTE, !is_volatile); |
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671 case vmIntrinsics::_putShort: return inline_unsafe_access(!is_native_ptr, is_store, T_SHORT, !is_volatile); |
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672 case vmIntrinsics::_putChar: return inline_unsafe_access(!is_native_ptr, is_store, T_CHAR, !is_volatile); |
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673 case vmIntrinsics::_putInt: return inline_unsafe_access(!is_native_ptr, is_store, T_INT, !is_volatile); |
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674 case vmIntrinsics::_putLong: return inline_unsafe_access(!is_native_ptr, is_store, T_LONG, !is_volatile); |
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675 case vmIntrinsics::_putFloat: return inline_unsafe_access(!is_native_ptr, is_store, T_FLOAT, !is_volatile); |
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676 case vmIntrinsics::_putDouble: return inline_unsafe_access(!is_native_ptr, is_store, T_DOUBLE, !is_volatile); |
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677 |
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678 case vmIntrinsics::_getByte_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_BYTE, !is_volatile); |
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679 case vmIntrinsics::_getShort_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_SHORT, !is_volatile); |
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680 case vmIntrinsics::_getChar_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_CHAR, !is_volatile); |
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681 case vmIntrinsics::_getInt_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_INT, !is_volatile); |
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682 case vmIntrinsics::_getLong_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_LONG, !is_volatile); |
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683 case vmIntrinsics::_getFloat_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_FLOAT, !is_volatile); |
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684 case vmIntrinsics::_getDouble_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_DOUBLE, !is_volatile); |
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685 case vmIntrinsics::_getAddress_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_ADDRESS, !is_volatile); |
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686 |
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687 case vmIntrinsics::_putByte_raw: return inline_unsafe_access( is_native_ptr, is_store, T_BYTE, !is_volatile); |
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688 case vmIntrinsics::_putShort_raw: return inline_unsafe_access( is_native_ptr, is_store, T_SHORT, !is_volatile); |
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689 case vmIntrinsics::_putChar_raw: return inline_unsafe_access( is_native_ptr, is_store, T_CHAR, !is_volatile); |
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690 case vmIntrinsics::_putInt_raw: return inline_unsafe_access( is_native_ptr, is_store, T_INT, !is_volatile); |
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691 case vmIntrinsics::_putLong_raw: return inline_unsafe_access( is_native_ptr, is_store, T_LONG, !is_volatile); |
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692 case vmIntrinsics::_putFloat_raw: return inline_unsafe_access( is_native_ptr, is_store, T_FLOAT, !is_volatile); |
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693 case vmIntrinsics::_putDouble_raw: return inline_unsafe_access( is_native_ptr, is_store, T_DOUBLE, !is_volatile); |
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694 case vmIntrinsics::_putAddress_raw: return inline_unsafe_access( is_native_ptr, is_store, T_ADDRESS, !is_volatile); |
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695 |
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696 case vmIntrinsics::_getObjectVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_OBJECT, is_volatile); |
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697 case vmIntrinsics::_getBooleanVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_BOOLEAN, is_volatile); |
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698 case vmIntrinsics::_getByteVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_BYTE, is_volatile); |
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699 case vmIntrinsics::_getShortVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_SHORT, is_volatile); |
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700 case vmIntrinsics::_getCharVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_CHAR, is_volatile); |
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701 case vmIntrinsics::_getIntVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_INT, is_volatile); |
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702 case vmIntrinsics::_getLongVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_LONG, is_volatile); |
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703 case vmIntrinsics::_getFloatVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_FLOAT, is_volatile); |
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704 case vmIntrinsics::_getDoubleVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_DOUBLE, is_volatile); |
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705 |
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706 case vmIntrinsics::_putObjectVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_OBJECT, is_volatile); |
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707 case vmIntrinsics::_putBooleanVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_BOOLEAN, is_volatile); |
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708 case vmIntrinsics::_putByteVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_BYTE, is_volatile); |
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709 case vmIntrinsics::_putShortVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_SHORT, is_volatile); |
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710 case vmIntrinsics::_putCharVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_CHAR, is_volatile); |
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711 case vmIntrinsics::_putIntVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_INT, is_volatile); |
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712 case vmIntrinsics::_putLongVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_LONG, is_volatile); |
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713 case vmIntrinsics::_putFloatVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_FLOAT, is_volatile); |
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714 case vmIntrinsics::_putDoubleVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_DOUBLE, is_volatile); |
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715 |
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716 case vmIntrinsics::_prefetchRead: return inline_unsafe_prefetch(!is_native_ptr, !is_store, !is_static); |
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717 case vmIntrinsics::_prefetchWrite: return inline_unsafe_prefetch(!is_native_ptr, is_store, !is_static); |
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718 case vmIntrinsics::_prefetchReadStatic: return inline_unsafe_prefetch(!is_native_ptr, !is_store, is_static); |
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719 case vmIntrinsics::_prefetchWriteStatic: return inline_unsafe_prefetch(!is_native_ptr, is_store, is_static); |
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720 |
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721 case vmIntrinsics::_compareAndSwapObject: return inline_unsafe_load_store(T_OBJECT, LS_cmpxchg); |
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722 case vmIntrinsics::_compareAndSwapInt: return inline_unsafe_load_store(T_INT, LS_cmpxchg); |
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723 case vmIntrinsics::_compareAndSwapLong: return inline_unsafe_load_store(T_LONG, LS_cmpxchg); |
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724 |
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725 case vmIntrinsics::_putOrderedObject: return inline_unsafe_ordered_store(T_OBJECT); |
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726 case vmIntrinsics::_putOrderedInt: return inline_unsafe_ordered_store(T_INT); |
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727 case vmIntrinsics::_putOrderedLong: return inline_unsafe_ordered_store(T_LONG); |
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728 |
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729 case vmIntrinsics::_getAndAddInt: return inline_unsafe_load_store(T_INT, LS_xadd); |
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730 case vmIntrinsics::_getAndAddLong: return inline_unsafe_load_store(T_LONG, LS_xadd); |
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731 case vmIntrinsics::_getAndSetInt: return inline_unsafe_load_store(T_INT, LS_xchg); |
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732 case vmIntrinsics::_getAndSetLong: return inline_unsafe_load_store(T_LONG, LS_xchg); |
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733 case vmIntrinsics::_getAndSetObject: return inline_unsafe_load_store(T_OBJECT, LS_xchg); |
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734 |
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735 case vmIntrinsics::_currentThread: return inline_native_currentThread(); |
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736 case vmIntrinsics::_isInterrupted: return inline_native_isInterrupted(); |
0 | 737 |
6006
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738 #ifdef TRACE_HAVE_INTRINSICS |
7194
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739 case vmIntrinsics::_classID: return inline_native_classID(); |
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740 case vmIntrinsics::_threadID: return inline_native_threadID(); |
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741 case vmIntrinsics::_counterTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, TRACE_TIME_METHOD), "counterTime"); |
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742 #endif |
7194
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743 case vmIntrinsics::_currentTimeMillis: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeMillis), "currentTimeMillis"); |
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744 case vmIntrinsics::_nanoTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeNanos), "nanoTime"); |
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745 case vmIntrinsics::_allocateInstance: return inline_unsafe_allocate(); |
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746 case vmIntrinsics::_copyMemory: return inline_unsafe_copyMemory(); |
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747 case vmIntrinsics::_newArray: return inline_native_newArray(); |
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748 case vmIntrinsics::_getLength: return inline_native_getLength(); |
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749 case vmIntrinsics::_copyOf: return inline_array_copyOf(false); |
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750 case vmIntrinsics::_copyOfRange: return inline_array_copyOf(true); |
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751 case vmIntrinsics::_equalsC: return inline_array_equals(); |
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752 case vmIntrinsics::_clone: return inline_native_clone(intrinsic()->is_virtual()); |
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753 |
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754 case vmIntrinsics::_isAssignableFrom: return inline_native_subtype_check(); |
0 | 755 |
756 case vmIntrinsics::_isInstance: | |
757 case vmIntrinsics::_getModifiers: | |
758 case vmIntrinsics::_isInterface: | |
759 case vmIntrinsics::_isArray: | |
760 case vmIntrinsics::_isPrimitive: | |
761 case vmIntrinsics::_getSuperclass: | |
762 case vmIntrinsics::_getComponentType: | |
7194
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763 case vmIntrinsics::_getClassAccessFlags: return inline_native_Class_query(intrinsic_id()); |
0 | 764 |
765 case vmIntrinsics::_floatToRawIntBits: | |
766 case vmIntrinsics::_floatToIntBits: | |
767 case vmIntrinsics::_intBitsToFloat: | |
768 case vmIntrinsics::_doubleToRawLongBits: | |
769 case vmIntrinsics::_doubleToLongBits: | |
7194
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770 case vmIntrinsics::_longBitsToDouble: return inline_fp_conversions(intrinsic_id()); |
0 | 771 |
775
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6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
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772 case vmIntrinsics::_numberOfLeadingZeros_i: |
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773 case vmIntrinsics::_numberOfLeadingZeros_l: |
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774 case vmIntrinsics::_numberOfTrailingZeros_i: |
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775 case vmIntrinsics::_numberOfTrailingZeros_l: |
643
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776 case vmIntrinsics::_bitCount_i: |
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777 case vmIntrinsics::_bitCount_l: |
0 | 778 case vmIntrinsics::_reverseBytes_i: |
779 case vmIntrinsics::_reverseBytes_l: | |
1396
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780 case vmIntrinsics::_reverseBytes_s: |
7194
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781 case vmIntrinsics::_reverseBytes_c: return inline_number_methods(intrinsic_id()); |
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782 |
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783 case vmIntrinsics::_getCallerClass: return inline_native_Reflection_getCallerClass(); |
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784 |
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785 case vmIntrinsics::_Reference_get: return inline_reference_get(); |
3249
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786 |
6894 | 787 case vmIntrinsics::_aescrypt_encryptBlock: |
7194
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788 case vmIntrinsics::_aescrypt_decryptBlock: return inline_aescrypt_Block(intrinsic_id()); |
6894 | 789 |
790 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
791 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
792 return inline_cipherBlockChaining_AESCrypt(intrinsic_id()); | |
793 | |
0 | 794 default: |
795 // If you get here, it may be that someone has added a new intrinsic | |
796 // to the list in vmSymbols.hpp without implementing it here. | |
797 #ifndef PRODUCT | |
798 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { | |
799 tty->print_cr("*** Warning: Unimplemented intrinsic %s(%d)", | |
800 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); | |
801 } | |
802 #endif | |
803 return false; | |
804 } | |
805 } | |
806 | |
6894 | 807 Node* LibraryCallKit::try_to_predicate() { |
808 if (!jvms()->has_method()) { | |
809 // Root JVMState has a null method. | |
810 assert(map()->memory()->Opcode() == Op_Parm, ""); | |
811 // Insert the memory aliasing node | |
812 set_all_memory(reset_memory()); | |
813 } | |
814 assert(merged_memory(), ""); | |
815 | |
816 switch (intrinsic_id()) { | |
817 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
818 return inline_cipherBlockChaining_AESCrypt_predicate(false); | |
819 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
820 return inline_cipherBlockChaining_AESCrypt_predicate(true); | |
821 | |
822 default: | |
823 // If you get here, it may be that someone has added a new intrinsic | |
824 // to the list in vmSymbols.hpp without implementing it here. | |
825 #ifndef PRODUCT | |
826 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { | |
827 tty->print_cr("*** Warning: Unimplemented predicate for intrinsic %s(%d)", | |
828 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); | |
829 } | |
830 #endif | |
831 Node* slow_ctl = control(); | |
832 set_control(top()); // No fast path instrinsic | |
833 return slow_ctl; | |
834 } | |
835 } | |
836 | |
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837 //------------------------------set_result------------------------------- |
0 | 838 // Helper function for finishing intrinsics. |
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839 void LibraryCallKit::set_result(RegionNode* region, PhiNode* value) { |
0 | 840 record_for_igvn(region); |
841 set_control(_gvn.transform(region)); | |
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842 set_result( _gvn.transform(value)); |
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843 assert(value->type()->basic_type() == result()->bottom_type()->basic_type(), "sanity"); |
0 | 844 } |
845 | |
846 //------------------------------generate_guard--------------------------- | |
847 // Helper function for generating guarded fast-slow graph structures. | |
848 // The given 'test', if true, guards a slow path. If the test fails | |
849 // then a fast path can be taken. (We generally hope it fails.) | |
850 // In all cases, GraphKit::control() is updated to the fast path. | |
851 // The returned value represents the control for the slow path. | |
852 // The return value is never 'top'; it is either a valid control | |
853 // or NULL if it is obvious that the slow path can never be taken. | |
854 // Also, if region and the slow control are not NULL, the slow edge | |
855 // is appended to the region. | |
856 Node* LibraryCallKit::generate_guard(Node* test, RegionNode* region, float true_prob) { | |
857 if (stopped()) { | |
858 // Already short circuited. | |
859 return NULL; | |
860 } | |
861 | |
862 // Build an if node and its projections. | |
863 // If test is true we take the slow path, which we assume is uncommon. | |
864 if (_gvn.type(test) == TypeInt::ZERO) { | |
865 // The slow branch is never taken. No need to build this guard. | |
866 return NULL; | |
867 } | |
868 | |
869 IfNode* iff = create_and_map_if(control(), test, true_prob, COUNT_UNKNOWN); | |
870 | |
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871 Node* if_slow = _gvn.transform( new (C) IfTrueNode(iff) ); |
0 | 872 if (if_slow == top()) { |
873 // The slow branch is never taken. No need to build this guard. | |
874 return NULL; | |
875 } | |
876 | |
877 if (region != NULL) | |
878 region->add_req(if_slow); | |
879 | |
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880 Node* if_fast = _gvn.transform( new (C) IfFalseNode(iff) ); |
0 | 881 set_control(if_fast); |
882 | |
883 return if_slow; | |
884 } | |
885 | |
886 inline Node* LibraryCallKit::generate_slow_guard(Node* test, RegionNode* region) { | |
887 return generate_guard(test, region, PROB_UNLIKELY_MAG(3)); | |
888 } | |
889 inline Node* LibraryCallKit::generate_fair_guard(Node* test, RegionNode* region) { | |
890 return generate_guard(test, region, PROB_FAIR); | |
891 } | |
892 | |
893 inline Node* LibraryCallKit::generate_negative_guard(Node* index, RegionNode* region, | |
894 Node* *pos_index) { | |
895 if (stopped()) | |
896 return NULL; // already stopped | |
897 if (_gvn.type(index)->higher_equal(TypeInt::POS)) // [0,maxint] | |
898 return NULL; // index is already adequately typed | |
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899 Node* cmp_lt = _gvn.transform( new (C) CmpINode(index, intcon(0)) ); |
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900 Node* bol_lt = _gvn.transform( new (C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 901 Node* is_neg = generate_guard(bol_lt, region, PROB_MIN); |
902 if (is_neg != NULL && pos_index != NULL) { | |
903 // Emulate effect of Parse::adjust_map_after_if. | |
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904 Node* ccast = new (C) CastIINode(index, TypeInt::POS); |
0 | 905 ccast->set_req(0, control()); |
906 (*pos_index) = _gvn.transform(ccast); | |
907 } | |
908 return is_neg; | |
909 } | |
910 | |
911 inline Node* LibraryCallKit::generate_nonpositive_guard(Node* index, bool never_negative, | |
912 Node* *pos_index) { | |
913 if (stopped()) | |
914 return NULL; // already stopped | |
915 if (_gvn.type(index)->higher_equal(TypeInt::POS1)) // [1,maxint] | |
916 return NULL; // index is already adequately typed | |
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917 Node* cmp_le = _gvn.transform( new (C) CmpINode(index, intcon(0)) ); |
0 | 918 BoolTest::mask le_or_eq = (never_negative ? BoolTest::eq : BoolTest::le); |
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919 Node* bol_le = _gvn.transform( new (C) BoolNode(cmp_le, le_or_eq) ); |
0 | 920 Node* is_notp = generate_guard(bol_le, NULL, PROB_MIN); |
921 if (is_notp != NULL && pos_index != NULL) { | |
922 // Emulate effect of Parse::adjust_map_after_if. | |
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923 Node* ccast = new (C) CastIINode(index, TypeInt::POS1); |
0 | 924 ccast->set_req(0, control()); |
925 (*pos_index) = _gvn.transform(ccast); | |
926 } | |
927 return is_notp; | |
928 } | |
929 | |
930 // Make sure that 'position' is a valid limit index, in [0..length]. | |
931 // There are two equivalent plans for checking this: | |
932 // A. (offset + copyLength) unsigned<= arrayLength | |
933 // B. offset <= (arrayLength - copyLength) | |
934 // We require that all of the values above, except for the sum and | |
935 // difference, are already known to be non-negative. | |
936 // Plan A is robust in the face of overflow, if offset and copyLength | |
937 // are both hugely positive. | |
938 // | |
939 // Plan B is less direct and intuitive, but it does not overflow at | |
940 // all, since the difference of two non-negatives is always | |
941 // representable. Whenever Java methods must perform the equivalent | |
942 // check they generally use Plan B instead of Plan A. | |
943 // For the moment we use Plan A. | |
944 inline Node* LibraryCallKit::generate_limit_guard(Node* offset, | |
945 Node* subseq_length, | |
946 Node* array_length, | |
947 RegionNode* region) { | |
948 if (stopped()) | |
949 return NULL; // already stopped | |
950 bool zero_offset = _gvn.type(offset) == TypeInt::ZERO; | |
4778 | 951 if (zero_offset && subseq_length->eqv_uncast(array_length)) |
0 | 952 return NULL; // common case of whole-array copy |
953 Node* last = subseq_length; | |
954 if (!zero_offset) // last += offset | |
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955 last = _gvn.transform( new (C) AddINode(last, offset)); |
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956 Node* cmp_lt = _gvn.transform( new (C) CmpUNode(array_length, last) ); |
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957 Node* bol_lt = _gvn.transform( new (C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 958 Node* is_over = generate_guard(bol_lt, region, PROB_MIN); |
959 return is_over; | |
960 } | |
961 | |
962 | |
963 //--------------------------generate_current_thread-------------------- | |
964 Node* LibraryCallKit::generate_current_thread(Node* &tls_output) { | |
965 ciKlass* thread_klass = env()->Thread_klass(); | |
966 const Type* thread_type = TypeOopPtr::make_from_klass(thread_klass)->cast_to_ptr_type(TypePtr::NotNull); | |
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967 Node* thread = _gvn.transform(new (C) ThreadLocalNode()); |
0 | 968 Node* p = basic_plus_adr(top()/*!oop*/, thread, in_bytes(JavaThread::threadObj_offset())); |
969 Node* threadObj = make_load(NULL, p, thread_type, T_OBJECT); | |
970 tls_output = thread; | |
971 return threadObj; | |
972 } | |
973 | |
974 | |
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975 //------------------------------make_string_method_node------------------------ |
6057 | 976 // Helper method for String intrinsic functions. This version is called |
977 // with str1 and str2 pointing to String object nodes. | |
978 // | |
979 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1, Node* str2) { | |
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980 Node* no_ctrl = NULL; |
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981 |
6057 | 982 // Get start addr of string |
983 Node* str1_value = load_String_value(no_ctrl, str1); | |
984 Node* str1_offset = load_String_offset(no_ctrl, str1); | |
986
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985 Node* str1_start = array_element_address(str1_value, str1_offset, T_CHAR); |
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986 |
6057 | 987 // Get length of string 1 |
988 Node* str1_len = load_String_length(no_ctrl, str1); | |
989 | |
990 Node* str2_value = load_String_value(no_ctrl, str2); | |
991 Node* str2_offset = load_String_offset(no_ctrl, str2); | |
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992 Node* str2_start = array_element_address(str2_value, str2_offset, T_CHAR); |
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993 |
6057 | 994 Node* str2_len = NULL; |
995 Node* result = NULL; | |
996 | |
997 switch (opcode) { | |
998 case Op_StrIndexOf: | |
999 // Get length of string 2 | |
1000 str2_len = load_String_length(no_ctrl, str2); | |
1001 | |
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1002 result = new (C) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1003 str1_start, str1_len, str2_start, str2_len); |
1004 break; | |
1005 case Op_StrComp: | |
1006 // Get length of string 2 | |
1007 str2_len = load_String_length(no_ctrl, str2); | |
1008 | |
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1009 result = new (C) StrCompNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1010 str1_start, str1_len, str2_start, str2_len); |
1011 break; | |
1012 case Op_StrEquals: | |
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1013 result = new (C) StrEqualsNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1014 str1_start, str2_start, str1_len); |
1015 break; | |
1016 default: | |
1017 ShouldNotReachHere(); | |
1018 return NULL; | |
1019 } | |
1020 | |
1021 // All these intrinsics have checks. | |
1022 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1023 | |
1024 return _gvn.transform(result); | |
1025 } | |
1026 | |
1027 // Helper method for String intrinsic functions. This version is called | |
1028 // with str1 and str2 pointing to char[] nodes, with cnt1 and cnt2 pointing | |
1029 // to Int nodes containing the lenghts of str1 and str2. | |
1030 // | |
1031 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2) { | |
986
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1032 Node* result = NULL; |
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1033 switch (opcode) { |
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1034 case Op_StrIndexOf: |
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1035 result = new (C) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1036 str1_start, cnt1, str2_start, cnt2); |
986
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1037 break; |
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1038 case Op_StrComp: |
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1039 result = new (C) StrCompNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1040 str1_start, cnt1, str2_start, cnt2); |
986
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1041 break; |
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1042 case Op_StrEquals: |
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1043 result = new (C) StrEqualsNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1044 str1_start, str2_start, cnt1); |
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1045 break; |
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1046 default: |
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1047 ShouldNotReachHere(); |
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1048 return NULL; |
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1049 } |
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1050 |
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1051 // All these intrinsics have checks. |
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1052 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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1053 |
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1054 return _gvn.transform(result); |
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1055 } |
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1056 |
0 | 1057 //------------------------------inline_string_compareTo------------------------ |
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1058 // public int java.lang.String.compareTo(String anotherString); |
0 | 1059 bool LibraryCallKit::inline_string_compareTo() { |
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1060 Node* receiver = null_check(argument(0)); |
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1061 Node* arg = null_check(argument(1)); |
0 | 1062 if (stopped()) { |
1063 return true; | |
1064 } | |
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1065 set_result(make_string_method_node(Op_StrComp, receiver, arg)); |
0 | 1066 return true; |
1067 } | |
1068 | |
681 | 1069 //------------------------------inline_string_equals------------------------ |
1070 bool LibraryCallKit::inline_string_equals() { | |
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1071 Node* receiver = null_check_receiver(); |
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1072 // NOTE: Do not null check argument for String.equals() because spec |
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1073 // allows to specify NULL as argument. |
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1074 Node* argument = this->argument(1); |
681 | 1075 if (stopped()) { |
1076 return true; | |
1077 } | |
1078 | |
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1079 // paths (plus control) merge |
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1080 RegionNode* region = new (C) RegionNode(5); |
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1081 Node* phi = new (C) PhiNode(region, TypeInt::BOOL); |
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1082 |
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1083 // does source == target string? |
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1084 Node* cmp = _gvn.transform(new (C) CmpPNode(receiver, argument)); |
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1085 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::eq)); |
986
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1086 |
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1087 Node* if_eq = generate_slow_guard(bol, NULL); |
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1088 if (if_eq != NULL) { |
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1089 // receiver == argument |
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1090 phi->init_req(2, intcon(1)); |
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1091 region->init_req(2, if_eq); |
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1092 } |
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1093 |
681 | 1094 // get String klass for instanceOf |
1095 ciInstanceKlass* klass = env()->String_klass(); | |
1096 | |
986
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1097 if (!stopped()) { |
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1098 Node* inst = gen_instanceof(argument, makecon(TypeKlassPtr::make(klass))); |
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1099 Node* cmp = _gvn.transform(new (C) CmpINode(inst, intcon(1))); |
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1100 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::ne)); |
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1101 |
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1102 Node* inst_false = generate_guard(bol, NULL, PROB_MIN); |
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1103 //instanceOf == true, fallthrough |
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1104 |
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1105 if (inst_false != NULL) { |
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1106 phi->init_req(3, intcon(0)); |
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1107 region->init_req(3, inst_false); |
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1108 } |
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1109 } |
681 | 1110 |
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1111 if (!stopped()) { |
6057 | 1112 const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(klass); |
1113 | |
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1114 // Properly cast the argument to String |
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1115 argument = _gvn.transform(new (C) CheckCastPPNode(control(), argument, string_type)); |
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1116 // This path is taken only when argument's type is String:NotNull. |
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1117 argument = cast_not_null(argument, false); |
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1118 |
6057 | 1119 Node* no_ctrl = NULL; |
1120 | |
1121 // Get start addr of receiver | |
1122 Node* receiver_val = load_String_value(no_ctrl, receiver); | |
1123 Node* receiver_offset = load_String_offset(no_ctrl, receiver); | |
1124 Node* receiver_start = array_element_address(receiver_val, receiver_offset, T_CHAR); | |
1125 | |
1126 // Get length of receiver | |
1127 Node* receiver_cnt = load_String_length(no_ctrl, receiver); | |
1128 | |
1129 // Get start addr of argument | |
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1130 Node* argument_val = load_String_value(no_ctrl, argument); |
6057 | 1131 Node* argument_offset = load_String_offset(no_ctrl, argument); |
1132 Node* argument_start = array_element_address(argument_val, argument_offset, T_CHAR); | |
1133 | |
1134 // Get length of argument | |
1135 Node* argument_cnt = load_String_length(no_ctrl, argument); | |
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1136 |
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1137 // Check for receiver count != argument count |
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1138 Node* cmp = _gvn.transform( new(C) CmpINode(receiver_cnt, argument_cnt) ); |
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1139 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::ne) ); |
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1140 Node* if_ne = generate_slow_guard(bol, NULL); |
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1141 if (if_ne != NULL) { |
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1142 phi->init_req(4, intcon(0)); |
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1143 region->init_req(4, if_ne); |
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1144 } |
6057 | 1145 |
1146 // Check for count == 0 is done by assembler code for StrEquals. | |
1147 | |
1148 if (!stopped()) { | |
1149 Node* equals = make_string_method_node(Op_StrEquals, receiver_start, receiver_cnt, argument_start, argument_cnt); | |
1150 phi->init_req(1, equals); | |
1151 region->init_req(1, control()); | |
1152 } | |
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1153 } |
681 | 1154 |
1155 // post merge | |
1156 set_control(_gvn.transform(region)); | |
1157 record_for_igvn(region); | |
1158 | |
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1159 set_result(_gvn.transform(phi)); |
681 | 1160 return true; |
1161 } | |
1162 | |
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1163 //------------------------------inline_array_equals---------------------------- |
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1164 bool LibraryCallKit::inline_array_equals() { |
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1165 Node* arg1 = argument(0); |
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1166 Node* arg2 = argument(1); |
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1167 set_result(_gvn.transform(new (C) AryEqNode(control(), memory(TypeAryPtr::CHARS), arg1, arg2))); |
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1168 return true; |
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1169 } |
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1170 |
0 | 1171 // Java version of String.indexOf(constant string) |
1172 // class StringDecl { | |
1173 // StringDecl(char[] ca) { | |
1174 // offset = 0; | |
1175 // count = ca.length; | |
1176 // value = ca; | |
1177 // } | |
1178 // int offset; | |
1179 // int count; | |
1180 // char[] value; | |
1181 // } | |
1182 // | |
1183 // static int string_indexOf_J(StringDecl string_object, char[] target_object, | |
1184 // int targetOffset, int cache_i, int md2) { | |
1185 // int cache = cache_i; | |
1186 // int sourceOffset = string_object.offset; | |
1187 // int sourceCount = string_object.count; | |
1188 // int targetCount = target_object.length; | |
1189 // | |
1190 // int targetCountLess1 = targetCount - 1; | |
1191 // int sourceEnd = sourceOffset + sourceCount - targetCountLess1; | |
1192 // | |
1193 // char[] source = string_object.value; | |
1194 // char[] target = target_object; | |
1195 // int lastChar = target[targetCountLess1]; | |
1196 // | |
1197 // outer_loop: | |
1198 // for (int i = sourceOffset; i < sourceEnd; ) { | |
1199 // int src = source[i + targetCountLess1]; | |
1200 // if (src == lastChar) { | |
1201 // // With random strings and a 4-character alphabet, | |
1202 // // reverse matching at this point sets up 0.8% fewer | |
1203 // // frames, but (paradoxically) makes 0.3% more probes. | |
1204 // // Since those probes are nearer the lastChar probe, | |
1205 // // there is may be a net D$ win with reverse matching. | |
1206 // // But, reversing loop inhibits unroll of inner loop | |
1207 // // for unknown reason. So, does running outer loop from | |
1208 // // (sourceOffset - targetCountLess1) to (sourceOffset + sourceCount) | |
1209 // for (int j = 0; j < targetCountLess1; j++) { | |
1210 // if (target[targetOffset + j] != source[i+j]) { | |
1211 // if ((cache & (1 << source[i+j])) == 0) { | |
1212 // if (md2 < j+1) { | |
1213 // i += j+1; | |
1214 // continue outer_loop; | |
1215 // } | |
1216 // } | |
1217 // i += md2; | |
1218 // continue outer_loop; | |
1219 // } | |
1220 // } | |
1221 // return i - sourceOffset; | |
1222 // } | |
1223 // if ((cache & (1 << src)) == 0) { | |
1224 // i += targetCountLess1; | |
1225 // } // using "i += targetCount;" and an "else i++;" causes a jump to jump. | |
1226 // i++; | |
1227 // } | |
1228 // return -1; | |
1229 // } | |
1230 | |
1231 //------------------------------string_indexOf------------------------ | |
1232 Node* LibraryCallKit::string_indexOf(Node* string_object, ciTypeArray* target_array, jint targetOffset_i, | |
1233 jint cache_i, jint md2_i) { | |
1234 | |
1235 Node* no_ctrl = NULL; | |
1236 float likely = PROB_LIKELY(0.9); | |
1237 float unlikely = PROB_UNLIKELY(0.9); | |
1238 | |
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1239 const int nargs = 0; // no arguments to push back for uncommon trap in predicate |
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1240 |
6057 | 1241 Node* source = load_String_value(no_ctrl, string_object); |
1242 Node* sourceOffset = load_String_offset(no_ctrl, string_object); | |
1243 Node* sourceCount = load_String_length(no_ctrl, string_object); | |
0 | 1244 |
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1245 Node* target = _gvn.transform( makecon(TypeOopPtr::make_from_constant(target_array, true)) ); |
0 | 1246 jint target_length = target_array->length(); |
1247 const TypeAry* target_array_type = TypeAry::make(TypeInt::CHAR, TypeInt::make(0, target_length, Type::WidenMin)); | |
1248 const TypeAryPtr* target_type = TypeAryPtr::make(TypePtr::BotPTR, target_array_type, target_array->klass(), true, Type::OffsetBot); | |
1249 | |
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1250 IdealKit kit(this, false, true); |
0 | 1251 #define __ kit. |
1252 Node* zero = __ ConI(0); | |
1253 Node* one = __ ConI(1); | |
1254 Node* cache = __ ConI(cache_i); | |
1255 Node* md2 = __ ConI(md2_i); | |
1256 Node* lastChar = __ ConI(target_array->char_at(target_length - 1)); | |
1257 Node* targetCount = __ ConI(target_length); | |
1258 Node* targetCountLess1 = __ ConI(target_length - 1); | |
1259 Node* targetOffset = __ ConI(targetOffset_i); | |
1260 Node* sourceEnd = __ SubI(__ AddI(sourceOffset, sourceCount), targetCountLess1); | |
1261 | |
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1262 IdealVariable rtn(kit), i(kit), j(kit); __ declarations_done(); |
0 | 1263 Node* outer_loop = __ make_label(2 /* goto */); |
1264 Node* return_ = __ make_label(1); | |
1265 | |
1266 __ set(rtn,__ ConI(-1)); | |
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1267 __ loop(this, nargs, i, sourceOffset, BoolTest::lt, sourceEnd); { |
0 | 1268 Node* i2 = __ AddI(__ value(i), targetCountLess1); |
1269 // pin to prohibit loading of "next iteration" value which may SEGV (rare) | |
1270 Node* src = load_array_element(__ ctrl(), source, i2, TypeAryPtr::CHARS); | |
1271 __ if_then(src, BoolTest::eq, lastChar, unlikely); { | |
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1272 __ loop(this, nargs, j, zero, BoolTest::lt, targetCountLess1); { |
0 | 1273 Node* tpj = __ AddI(targetOffset, __ value(j)); |
1274 Node* targ = load_array_element(no_ctrl, target, tpj, target_type); | |
1275 Node* ipj = __ AddI(__ value(i), __ value(j)); | |
1276 Node* src2 = load_array_element(no_ctrl, source, ipj, TypeAryPtr::CHARS); | |
1277 __ if_then(targ, BoolTest::ne, src2); { | |
1278 __ if_then(__ AndI(cache, __ LShiftI(one, src2)), BoolTest::eq, zero); { | |
1279 __ if_then(md2, BoolTest::lt, __ AddI(__ value(j), one)); { | |
1280 __ increment(i, __ AddI(__ value(j), one)); | |
1281 __ goto_(outer_loop); | |
1282 } __ end_if(); __ dead(j); | |
1283 }__ end_if(); __ dead(j); | |
1284 __ increment(i, md2); | |
1285 __ goto_(outer_loop); | |
1286 }__ end_if(); | |
1287 __ increment(j, one); | |
1288 }__ end_loop(); __ dead(j); | |
1289 __ set(rtn, __ SubI(__ value(i), sourceOffset)); __ dead(i); | |
1290 __ goto_(return_); | |
1291 }__ end_if(); | |
1292 __ if_then(__ AndI(cache, __ LShiftI(one, src)), BoolTest::eq, zero, likely); { | |
1293 __ increment(i, targetCountLess1); | |
1294 }__ end_if(); | |
1295 __ increment(i, one); | |
1296 __ bind(outer_loop); | |
1297 }__ end_loop(); __ dead(i); | |
1298 __ bind(return_); | |
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1299 |
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1300 // Final sync IdealKit and GraphKit. |
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1301 final_sync(kit); |
0 | 1302 Node* result = __ value(rtn); |
1303 #undef __ | |
1304 C->set_has_loops(true); | |
1305 return result; | |
1306 } | |
1307 | |
1308 //------------------------------inline_string_indexOf------------------------ | |
1309 bool LibraryCallKit::inline_string_indexOf() { | |
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1310 Node* receiver = argument(0); |
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1311 Node* arg = argument(1); |
681 | 1312 |
1313 Node* result; | |
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1314 // Disable the use of pcmpestri until it can be guaranteed that |
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1315 // the load doesn't cross into the uncommited space. |
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1316 if (Matcher::has_match_rule(Op_StrIndexOf) && |
681 | 1317 UseSSE42Intrinsics) { |
1318 // Generate SSE4.2 version of indexOf | |
1319 // We currently only have match rules that use SSE4.2 | |
1320 | |
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1321 receiver = null_check(receiver); |
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1322 arg = null_check(arg); |
681 | 1323 if (stopped()) { |
1324 return true; | |
1325 } | |
1326 | |
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1327 ciInstanceKlass* str_klass = env()->String_klass(); |
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1328 const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(str_klass); |
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1329 |
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1330 // Make the merge point |
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1331 RegionNode* result_rgn = new (C) RegionNode(4); |
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1332 Node* result_phi = new (C) PhiNode(result_rgn, TypeInt::INT); |
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1333 Node* no_ctrl = NULL; |
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1334 |
6057 | 1335 // Get start addr of source string |
1336 Node* source = load_String_value(no_ctrl, receiver); | |
1337 Node* source_offset = load_String_offset(no_ctrl, receiver); | |
1338 Node* source_start = array_element_address(source, source_offset, T_CHAR); | |
1339 | |
1340 // Get length of source string | |
1341 Node* source_cnt = load_String_length(no_ctrl, receiver); | |
1342 | |
1343 // Get start addr of substring | |
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1344 Node* substr = load_String_value(no_ctrl, arg); |
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1345 Node* substr_offset = load_String_offset(no_ctrl, arg); |
6057 | 1346 Node* substr_start = array_element_address(substr, substr_offset, T_CHAR); |
1347 | |
1348 // Get length of source string | |
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1349 Node* substr_cnt = load_String_length(no_ctrl, arg); |
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1350 |
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1351 // Check for substr count > string count |
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1352 Node* cmp = _gvn.transform( new(C) CmpINode(substr_cnt, source_cnt) ); |
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1353 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::gt) ); |
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1354 Node* if_gt = generate_slow_guard(bol, NULL); |
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1355 if (if_gt != NULL) { |
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1356 result_phi->init_req(2, intcon(-1)); |
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1357 result_rgn->init_req(2, if_gt); |
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1358 } |
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1359 |
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1360 if (!stopped()) { |
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1361 // Check for substr count == 0 |
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1362 cmp = _gvn.transform( new(C) CmpINode(substr_cnt, intcon(0)) ); |
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1363 bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::eq) ); |
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1364 Node* if_zero = generate_slow_guard(bol, NULL); |
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1365 if (if_zero != NULL) { |
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1366 result_phi->init_req(3, intcon(0)); |
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1367 result_rgn->init_req(3, if_zero); |
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1368 } |
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1369 } |
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1370 |
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1371 if (!stopped()) { |
6057 | 1372 result = make_string_method_node(Op_StrIndexOf, source_start, source_cnt, substr_start, substr_cnt); |
986
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1373 result_phi->init_req(1, result); |
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1374 result_rgn->init_req(1, control()); |
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1375 } |
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1376 set_control(_gvn.transform(result_rgn)); |
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1377 record_for_igvn(result_rgn); |
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1378 result = _gvn.transform(result_phi); |
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1379 |
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1380 } else { // Use LibraryCallKit::string_indexOf |
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1381 // don't intrinsify if argument isn't a constant string. |
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1382 if (!arg->is_Con()) { |
681 | 1383 return false; |
1384 } | |
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1385 const TypeOopPtr* str_type = _gvn.type(arg)->isa_oopptr(); |
681 | 1386 if (str_type == NULL) { |
1387 return false; | |
1388 } | |
1389 ciInstanceKlass* klass = env()->String_klass(); | |
1390 ciObject* str_const = str_type->const_oop(); | |
1391 if (str_const == NULL || str_const->klass() != klass) { | |
1392 return false; | |
1393 } | |
1394 ciInstance* str = str_const->as_instance(); | |
1395 assert(str != NULL, "must be instance"); | |
1396 | |
6057 | 1397 ciObject* v = str->field_value_by_offset(java_lang_String::value_offset_in_bytes()).as_object(); |
681 | 1398 ciTypeArray* pat = v->as_type_array(); // pattern (argument) character array |
1399 | |
6057 | 1400 int o; |
1401 int c; | |
1402 if (java_lang_String::has_offset_field()) { | |
1403 o = str->field_value_by_offset(java_lang_String::offset_offset_in_bytes()).as_int(); | |
1404 c = str->field_value_by_offset(java_lang_String::count_offset_in_bytes()).as_int(); | |
1405 } else { | |
1406 o = 0; | |
1407 c = pat->length(); | |
1408 } | |
1409 | |
681 | 1410 // constant strings have no offset and count == length which |
1411 // simplifies the resulting code somewhat so lets optimize for that. | |
1412 if (o != 0 || c != pat->length()) { | |
1413 return false; | |
1414 } | |
1415 | |
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1416 receiver = null_check(receiver, T_OBJECT); |
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1417 // NOTE: No null check on the argument is needed since it's a constant String oop. |
681 | 1418 if (stopped()) { |
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1419 return true; |
681 | 1420 } |
1421 | |
1422 // The null string as a pattern always returns 0 (match at beginning of string) | |
1423 if (c == 0) { | |
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1424 set_result(intcon(0)); |
681 | 1425 return true; |
1426 } | |
1427 | |
1428 // Generate default indexOf | |
1429 jchar lastChar = pat->char_at(o + (c - 1)); | |
1430 int cache = 0; | |
1431 int i; | |
1432 for (i = 0; i < c - 1; i++) { | |
1433 assert(i < pat->length(), "out of range"); | |
1434 cache |= (1 << (pat->char_at(o + i) & (sizeof(cache) * BitsPerByte - 1))); | |
1435 } | |
1436 | |
1437 int md2 = c; | |
1438 for (i = 0; i < c - 1; i++) { | |
1439 assert(i < pat->length(), "out of range"); | |
1440 if (pat->char_at(o + i) == lastChar) { | |
1441 md2 = (c - 1) - i; | |
1442 } | |
1443 } | |
1444 | |
1445 result = string_indexOf(receiver, pat, o, cache, md2); | |
0 | 1446 } |
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1447 set_result(result); |
0 | 1448 return true; |
1449 } | |
1450 | |
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1451 //--------------------------round_double_node-------------------------------- |
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1452 // Round a double node if necessary. |
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1453 Node* LibraryCallKit::round_double_node(Node* n) { |
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1454 if (Matcher::strict_fp_requires_explicit_rounding && UseSSE <= 1) |
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1455 n = _gvn.transform(new (C) RoundDoubleNode(0, n)); |
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1456 return n; |
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1457 } |
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1458 |
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1459 //------------------------------inline_math----------------------------------- |
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1460 // public static double Math.abs(double) |
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1461 // public static double Math.sqrt(double) |
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1462 // public static double Math.log(double) |
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1463 // public static double Math.log10(double) |
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1464 bool LibraryCallKit::inline_math(vmIntrinsics::ID id) { |
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1465 Node* arg = round_double_node(argument(0)); |
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1466 Node* n; |
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1467 switch (id) { |
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1468 case vmIntrinsics::_dabs: n = new (C) AbsDNode( arg); break; |
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1469 case vmIntrinsics::_dsqrt: n = new (C) SqrtDNode(0, arg); break; |
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1470 case vmIntrinsics::_dlog: n = new (C) LogDNode( arg); break; |
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1471 case vmIntrinsics::_dlog10: n = new (C) Log10DNode( arg); break; |
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1472 default: fatal_unexpected_iid(id); break; |
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1473 } |
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1474 set_result(_gvn.transform(n)); |
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1475 return true; |
0 | 1476 } |
1477 | |
1478 //------------------------------inline_trig---------------------------------- | |
1479 // Inline sin/cos/tan instructions, if possible. If rounding is required, do | |
1480 // argument reduction which will turn into a fast/slow diamond. | |
1481 bool LibraryCallKit::inline_trig(vmIntrinsics::ID id) { | |
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1482 Node* arg = round_double_node(argument(0)); |
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1483 Node* n = NULL; |
0 | 1484 |
1485 switch (id) { | |
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1486 case vmIntrinsics::_dsin: n = new (C) SinDNode(arg); break; |
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1487 case vmIntrinsics::_dcos: n = new (C) CosDNode(arg); break; |
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1488 case vmIntrinsics::_dtan: n = new (C) TanDNode(arg); break; |
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1489 default: fatal_unexpected_iid(id); break; |
0 | 1490 } |
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1491 n = _gvn.transform(n); |
0 | 1492 |
1493 // Rounding required? Check for argument reduction! | |
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1494 if (Matcher::strict_fp_requires_explicit_rounding) { |
0 | 1495 static const double pi_4 = 0.7853981633974483; |
1496 static const double neg_pi_4 = -0.7853981633974483; | |
1497 // pi/2 in 80-bit extended precision | |
1498 // static const unsigned char pi_2_bits_x[] = {0x35,0xc2,0x68,0x21,0xa2,0xda,0x0f,0xc9,0xff,0x3f,0x00,0x00,0x00,0x00,0x00,0x00}; | |
1499 // -pi/2 in 80-bit extended precision | |
1500 // 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}; | |
1501 // Cutoff value for using this argument reduction technique | |
1502 //static const double pi_2_minus_epsilon = 1.564660403643354; | |
1503 //static const double neg_pi_2_plus_epsilon = -1.564660403643354; | |
1504 | |
1505 // Pseudocode for sin: | |
1506 // if (x <= Math.PI / 4.0) { | |
1507 // if (x >= -Math.PI / 4.0) return fsin(x); | |
1508 // if (x >= -Math.PI / 2.0) return -fcos(x + Math.PI / 2.0); | |
1509 // } else { | |
1510 // if (x <= Math.PI / 2.0) return fcos(x - Math.PI / 2.0); | |
1511 // } | |
1512 // return StrictMath.sin(x); | |
1513 | |
1514 // Pseudocode for cos: | |
1515 // if (x <= Math.PI / 4.0) { | |
1516 // if (x >= -Math.PI / 4.0) return fcos(x); | |
1517 // if (x >= -Math.PI / 2.0) return fsin(x + Math.PI / 2.0); | |
1518 // } else { | |
1519 // if (x <= Math.PI / 2.0) return -fsin(x - Math.PI / 2.0); | |
1520 // } | |
1521 // return StrictMath.cos(x); | |
1522 | |
1523 // Actually, sticking in an 80-bit Intel value into C2 will be tough; it | |
1524 // requires a special machine instruction to load it. Instead we'll try | |
1525 // the 'easy' case. If we really need the extra range +/- PI/2 we'll | |
1526 // probably do the math inside the SIN encoding. | |
1527 | |
1528 // Make the merge point | |
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1529 RegionNode* r = new (C) RegionNode(3); |
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1530 Node* phi = new (C) PhiNode(r, Type::DOUBLE); |
0 | 1531 |
1532 // Flatten arg so we need only 1 test | |
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1533 Node *abs = _gvn.transform(new (C) AbsDNode(arg)); |
0 | 1534 // Node for PI/4 constant |
1535 Node *pi4 = makecon(TypeD::make(pi_4)); | |
1536 // Check PI/4 : abs(arg) | |
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1537 Node *cmp = _gvn.transform(new (C) CmpDNode(pi4,abs)); |
0 | 1538 // Check: If PI/4 < abs(arg) then go slow |
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1539 Node *bol = _gvn.transform( new (C) BoolNode( cmp, BoolTest::lt ) ); |
0 | 1540 // Branch either way |
1541 IfNode *iff = create_and_xform_if(control(),bol, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
1542 set_control(opt_iff(r,iff)); | |
1543 | |
1544 // Set fast path result | |
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1545 phi->init_req(2, n); |
0 | 1546 |
1547 // Slow path - non-blocking leaf call | |
1548 Node* call = NULL; | |
1549 switch (id) { | |
1550 case vmIntrinsics::_dsin: | |
1551 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1552 CAST_FROM_FN_PTR(address, SharedRuntime::dsin), | |
1553 "Sin", NULL, arg, top()); | |
1554 break; | |
1555 case vmIntrinsics::_dcos: | |
1556 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1557 CAST_FROM_FN_PTR(address, SharedRuntime::dcos), | |
1558 "Cos", NULL, arg, top()); | |
1559 break; | |
1560 case vmIntrinsics::_dtan: | |
1561 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1562 CAST_FROM_FN_PTR(address, SharedRuntime::dtan), | |
1563 "Tan", NULL, arg, top()); | |
1564 break; | |
1565 } | |
1566 assert(control()->in(0) == call, ""); | |
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1567 Node* slow_result = _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
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1568 r->init_req(1, control()); |
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1569 phi->init_req(1, slow_result); |
0 | 1570 |
1571 // Post-merge | |
1572 set_control(_gvn.transform(r)); | |
1573 record_for_igvn(r); | |
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1574 n = _gvn.transform(phi); |
0 | 1575 |
1576 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1577 } | |
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1578 set_result(n); |
0 | 1579 return true; |
1580 } | |
1581 | |
6205 | 1582 void LibraryCallKit::finish_pow_exp(Node* result, Node* x, Node* y, const TypeFunc* call_type, address funcAddr, const char* funcName) { |
1583 //------------------- | |
1584 //result=(result.isNaN())? funcAddr():result; | |
1585 // Check: If isNaN() by checking result!=result? then either trap | |
1586 // or go to runtime | |
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1587 Node* cmpisnan = _gvn.transform(new (C) CmpDNode(result, result)); |
6205 | 1588 // Build the boolean node |
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1589 Node* bolisnum = _gvn.transform(new (C) BoolNode(cmpisnan, BoolTest::eq)); |
6205 | 1590 |
1591 if (!too_many_traps(Deoptimization::Reason_intrinsic)) { | |
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1592 { BuildCutout unless(this, bolisnum, PROB_STATIC_FREQUENT); |
6205 | 1593 // The pow or exp intrinsic returned a NaN, which requires a call |
1594 // to the runtime. Recompile with the runtime call. | |
1595 uncommon_trap(Deoptimization::Reason_intrinsic, | |
1596 Deoptimization::Action_make_not_entrant); | |
1597 } | |
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1598 set_result(result); |
6205 | 1599 } else { |
1600 // If this inlining ever returned NaN in the past, we compile a call | |
1601 // to the runtime to properly handle corner cases | |
1602 | |
1603 IfNode* iff = create_and_xform_if(control(), bolisnum, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
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1604 Node* if_slow = _gvn.transform( new (C) IfFalseNode(iff) ); |
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1605 Node* if_fast = _gvn.transform( new (C) IfTrueNode(iff) ); |
6205 | 1606 |
1607 if (!if_slow->is_top()) { | |
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1608 RegionNode* result_region = new (C) RegionNode(3); |
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1609 PhiNode* result_val = new (C) PhiNode(result_region, Type::DOUBLE); |
6205 | 1610 |
1611 result_region->init_req(1, if_fast); | |
1612 result_val->init_req(1, result); | |
1613 | |
1614 set_control(if_slow); | |
1615 | |
1616 const TypePtr* no_memory_effects = NULL; | |
1617 Node* rt = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, | |
1618 no_memory_effects, | |
1619 x, top(), y, y ? top() : NULL); | |
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1620 Node* value = _gvn.transform(new (C) ProjNode(rt, TypeFunc::Parms+0)); |
6205 | 1621 #ifdef ASSERT |
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1622 Node* value_top = _gvn.transform(new (C) ProjNode(rt, TypeFunc::Parms+1)); |
6205 | 1623 assert(value_top == top(), "second value must be top"); |
1624 #endif | |
1625 | |
1626 result_region->init_req(2, control()); | |
1627 result_val->init_req(2, value); | |
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1628 set_result(result_region, result_val); |
6205 | 1629 } else { |
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1630 set_result(result); |
6205 | 1631 } |
1632 } | |
1633 } | |
1634 | |
0 | 1635 //------------------------------inline_exp------------------------------------- |
1636 // Inline exp instructions, if possible. The Intel hardware only misses | |
1637 // really odd corner cases (+/- Infinity). Just uncommon-trap them. | |
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1638 bool LibraryCallKit::inline_exp() { |
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1639 Node* arg = round_double_node(argument(0)); |
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1640 Node* n = _gvn.transform(new (C) ExpDNode(0, arg)); |
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1641 |
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1642 finish_pow_exp(n, arg, NULL, OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dexp), "EXP"); |
0 | 1643 |
1644 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1645 return true; | |
1646 } | |
1647 | |
1648 //------------------------------inline_pow------------------------------------- | |
1649 // Inline power instructions, if possible. | |
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1650 bool LibraryCallKit::inline_pow() { |
0 | 1651 // Pseudocode for pow |
1652 // if (x <= 0.0) { | |
6205 | 1653 // long longy = (long)y; |
1654 // if ((double)longy == y) { // if y is long | |
1655 // if (y + 1 == y) longy = 0; // huge number: even | |
1656 // result = ((1&longy) == 0)?-DPow(abs(x), y):DPow(abs(x), y); | |
0 | 1657 // } else { |
1658 // result = NaN; | |
1659 // } | |
1660 // } else { | |
1661 // result = DPow(x,y); | |
1662 // } | |
1663 // if (result != result)? { | |
6205 | 1664 // result = uncommon_trap() or runtime_call(); |
0 | 1665 // } |
1666 // return result; | |
1667 | |
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1668 Node* x = round_double_node(argument(0)); |
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1669 Node* y = round_double_node(argument(2)); |
0 | 1670 |
6205 | 1671 Node* result = NULL; |
1672 | |
1673 if (!too_many_traps(Deoptimization::Reason_intrinsic)) { | |
1674 // Short form: skip the fancy tests and just check for NaN result. | |
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1675 result = _gvn.transform(new (C) PowDNode(0, x, y)); |
0 | 1676 } else { |
6205 | 1677 // If this inlining ever returned NaN in the past, include all |
1678 // checks + call to the runtime. | |
0 | 1679 |
1680 // Set the merge point for If node with condition of (x <= 0.0) | |
1681 // There are four possible paths to region node and phi node | |
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1682 RegionNode *r = new (C) RegionNode(4); |
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1683 Node *phi = new (C) PhiNode(r, Type::DOUBLE); |
0 | 1684 |
1685 // Build the first if node: if (x <= 0.0) | |
1686 // Node for 0 constant | |
1687 Node *zeronode = makecon(TypeD::ZERO); | |
1688 // Check x:0 | |
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1689 Node *cmp = _gvn.transform(new (C) CmpDNode(x, zeronode)); |
0 | 1690 // Check: If (x<=0) then go complex path |
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1691 Node *bol1 = _gvn.transform( new (C) BoolNode( cmp, BoolTest::le ) ); |
0 | 1692 // Branch either way |
1693 IfNode *if1 = create_and_xform_if(control(),bol1, PROB_STATIC_INFREQUENT, COUNT_UNKNOWN); | |
1694 // Fast path taken; set region slot 3 | |
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1695 Node *fast_taken = _gvn.transform( new (C) IfFalseNode(if1) ); |
0 | 1696 r->init_req(3,fast_taken); // Capture fast-control |
1697 | |
1698 // Fast path not-taken, i.e. slow path | |
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1699 Node *complex_path = _gvn.transform( new (C) IfTrueNode(if1) ); |
0 | 1700 |
1701 // Set fast path result | |
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1702 Node *fast_result = _gvn.transform( new (C) PowDNode(0, x, y) ); |
0 | 1703 phi->init_req(3, fast_result); |
1704 | |
1705 // Complex path | |
6205 | 1706 // Build the second if node (if y is long) |
1707 // Node for (long)y | |
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1708 Node *longy = _gvn.transform( new (C) ConvD2LNode(y)); |
6205 | 1709 // Node for (double)((long) y) |
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1710 Node *doublelongy= _gvn.transform( new (C) ConvL2DNode(longy)); |
6205 | 1711 // Check (double)((long) y) : y |
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1712 Node *cmplongy= _gvn.transform(new (C) CmpDNode(doublelongy, y)); |
6205 | 1713 // Check if (y isn't long) then go to slow path |
1714 | |
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1715 Node *bol2 = _gvn.transform( new (C) BoolNode( cmplongy, BoolTest::ne ) ); |
605 | 1716 // Branch either way |
0 | 1717 IfNode *if2 = create_and_xform_if(complex_path,bol2, PROB_STATIC_INFREQUENT, COUNT_UNKNOWN); |
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1718 Node* ylong_path = _gvn.transform( new (C) IfFalseNode(if2)); |
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1719 |
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1720 Node *slow_path = _gvn.transform( new (C) IfTrueNode(if2) ); |
6205 | 1721 |
1722 // Calculate DPow(abs(x), y)*(1 & (long)y) | |
0 | 1723 // Node for constant 1 |
6205 | 1724 Node *conone = longcon(1); |
1725 // 1& (long)y | |
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1726 Node *signnode= _gvn.transform( new (C) AndLNode(conone, longy) ); |
6205 | 1727 |
1728 // A huge number is always even. Detect a huge number by checking | |
1729 // if y + 1 == y and set integer to be tested for parity to 0. | |
1730 // Required for corner case: | |
1731 // (long)9.223372036854776E18 = max_jlong | |
1732 // (double)(long)9.223372036854776E18 = 9.223372036854776E18 | |
1733 // max_jlong is odd but 9.223372036854776E18 is even | |
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1734 Node* yplus1 = _gvn.transform( new (C) AddDNode(y, makecon(TypeD::make(1)))); |
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1735 Node *cmpyplus1= _gvn.transform(new (C) CmpDNode(yplus1, y)); |
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1736 Node *bolyplus1 = _gvn.transform( new (C) BoolNode( cmpyplus1, BoolTest::eq ) ); |
6205 | 1737 Node* correctedsign = NULL; |
1738 if (ConditionalMoveLimit != 0) { | |
1739 correctedsign = _gvn.transform( CMoveNode::make(C, NULL, bolyplus1, signnode, longcon(0), TypeLong::LONG)); | |
1740 } else { | |
1741 IfNode *ifyplus1 = create_and_xform_if(ylong_path,bolyplus1, PROB_FAIR, COUNT_UNKNOWN); | |
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1742 RegionNode *r = new (C) RegionNode(3); |
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1743 Node *phi = new (C) PhiNode(r, TypeLong::LONG); |
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1744 r->init_req(1, _gvn.transform( new (C) IfFalseNode(ifyplus1))); |
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1745 r->init_req(2, _gvn.transform( new (C) IfTrueNode(ifyplus1))); |
6205 | 1746 phi->init_req(1, signnode); |
1747 phi->init_req(2, longcon(0)); | |
1748 correctedsign = _gvn.transform(phi); | |
1749 ylong_path = _gvn.transform(r); | |
1750 record_for_igvn(r); | |
1751 } | |
1752 | |
0 | 1753 // zero node |
6205 | 1754 Node *conzero = longcon(0); |
1755 // Check (1&(long)y)==0? | |
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1756 Node *cmpeq1 = _gvn.transform(new (C) CmpLNode(correctedsign, conzero)); |
6205 | 1757 // Check if (1&(long)y)!=0?, if so the result is negative |
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1758 Node *bol3 = _gvn.transform( new (C) BoolNode( cmpeq1, BoolTest::ne ) ); |
0 | 1759 // abs(x) |
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1760 Node *absx=_gvn.transform( new (C) AbsDNode(x)); |
0 | 1761 // abs(x)^y |
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1762 Node *absxpowy = _gvn.transform( new (C) PowDNode(0, absx, y) ); |
0 | 1763 // -abs(x)^y |
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1764 Node *negabsxpowy = _gvn.transform(new (C) NegDNode (absxpowy)); |
6205 | 1765 // (1&(long)y)==1?-DPow(abs(x), y):DPow(abs(x), y) |
1766 Node *signresult = NULL; | |
1767 if (ConditionalMoveLimit != 0) { | |
1768 signresult = _gvn.transform( CMoveNode::make(C, NULL, bol3, absxpowy, negabsxpowy, Type::DOUBLE)); | |
1769 } else { | |
1770 IfNode *ifyeven = create_and_xform_if(ylong_path,bol3, PROB_FAIR, COUNT_UNKNOWN); | |
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1771 RegionNode *r = new (C) RegionNode(3); |
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1772 Node *phi = new (C) PhiNode(r, Type::DOUBLE); |
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1773 r->init_req(1, _gvn.transform( new (C) IfFalseNode(ifyeven))); |
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1774 r->init_req(2, _gvn.transform( new (C) IfTrueNode(ifyeven))); |
6205 | 1775 phi->init_req(1, absxpowy); |
1776 phi->init_req(2, negabsxpowy); | |
1777 signresult = _gvn.transform(phi); | |
1778 ylong_path = _gvn.transform(r); | |
1779 record_for_igvn(r); | |
1780 } | |
0 | 1781 // Set complex path fast result |
6205 | 1782 r->init_req(2, ylong_path); |
0 | 1783 phi->init_req(2, signresult); |
1784 | |
1785 static const jlong nan_bits = CONST64(0x7ff8000000000000); | |
1786 Node *slow_result = makecon(TypeD::make(*(double*)&nan_bits)); // return NaN | |
1787 r->init_req(1,slow_path); | |
1788 phi->init_req(1,slow_result); | |
1789 | |
1790 // Post merge | |
1791 set_control(_gvn.transform(r)); | |
1792 record_for_igvn(r); | |
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1793 result = _gvn.transform(phi); |
0 | 1794 } |
1795 | |
6205 | 1796 finish_pow_exp(result, x, y, OptoRuntime::Math_DD_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dpow), "POW"); |
0 | 1797 |
1798 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1799 return true; | |
1800 } | |
1801 | |
1802 //------------------------------runtime_math----------------------------- | |
1803 bool LibraryCallKit::runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName) { | |
1804 assert(call_type == OptoRuntime::Math_DD_D_Type() || call_type == OptoRuntime::Math_D_D_Type(), | |
1805 "must be (DD)D or (D)D type"); | |
1806 | |
1807 // Inputs | |
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1808 Node* a = round_double_node(argument(0)); |
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1809 Node* b = (call_type == OptoRuntime::Math_DD_D_Type()) ? round_double_node(argument(2)) : NULL; |
0 | 1810 |
1811 const TypePtr* no_memory_effects = NULL; | |
1812 Node* trig = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, | |
1813 no_memory_effects, | |
1814 a, top(), b, b ? top() : NULL); | |
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1815 Node* value = _gvn.transform(new (C) ProjNode(trig, TypeFunc::Parms+0)); |
0 | 1816 #ifdef ASSERT |
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1817 Node* value_top = _gvn.transform(new (C) ProjNode(trig, TypeFunc::Parms+1)); |
0 | 1818 assert(value_top == top(), "second value must be top"); |
1819 #endif | |
1820 | |
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1821 set_result(value); |
0 | 1822 return true; |
1823 } | |
1824 | |
1825 //------------------------------inline_math_native----------------------------- | |
1826 bool LibraryCallKit::inline_math_native(vmIntrinsics::ID id) { | |
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1827 #define FN_PTR(f) CAST_FROM_FN_PTR(address, f) |
0 | 1828 switch (id) { |
1829 // These intrinsics are not properly supported on all hardware | |
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1830 case vmIntrinsics::_dcos: return Matcher::has_match_rule(Op_CosD) ? inline_trig(id) : |
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1831 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dcos), "COS"); |
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1832 case vmIntrinsics::_dsin: return Matcher::has_match_rule(Op_SinD) ? inline_trig(id) : |
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1833 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dsin), "SIN"); |
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1834 case vmIntrinsics::_dtan: return Matcher::has_match_rule(Op_TanD) ? inline_trig(id) : |
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1835 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dtan), "TAN"); |
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1836 |
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1837 case vmIntrinsics::_dlog: return Matcher::has_match_rule(Op_LogD) ? inline_math(id) : |
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1838 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dlog), "LOG"); |
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1839 case vmIntrinsics::_dlog10: return Matcher::has_match_rule(Op_Log10D) ? inline_math(id) : |
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1840 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dlog10), "LOG10"); |
0 | 1841 |
1842 // These intrinsics are supported on all hardware | |
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1843 case vmIntrinsics::_dsqrt: return Matcher::has_match_rule(Op_SqrtD) ? inline_math(id) : false; |
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1844 case vmIntrinsics::_dabs: return Matcher::has_match_rule(Op_AbsD) ? inline_math(id) : false; |
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1845 |
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1846 case vmIntrinsics::_dexp: return Matcher::has_match_rule(Op_ExpD) ? inline_exp() : |
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1847 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dexp), "EXP"); |
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1848 case vmIntrinsics::_dpow: return Matcher::has_match_rule(Op_PowD) ? inline_pow() : |
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1849 runtime_math(OptoRuntime::Math_DD_D_Type(), FN_PTR(SharedRuntime::dpow), "POW"); |
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1850 #undef FN_PTR |
0 | 1851 |
1852 // These intrinsics are not yet correctly implemented | |
1853 case vmIntrinsics::_datan2: | |
1854 return false; | |
1855 | |
1856 default: | |
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1857 fatal_unexpected_iid(id); |
0 | 1858 return false; |
1859 } | |
1860 } | |
1861 | |
1862 static bool is_simple_name(Node* n) { | |
1863 return (n->req() == 1 // constant | |
1864 || (n->is_Type() && n->as_Type()->type()->singleton()) | |
1865 || n->is_Proj() // parameter or return value | |
1866 || n->is_Phi() // local of some sort | |
1867 ); | |
1868 } | |
1869 | |
1870 //----------------------------inline_min_max----------------------------------- | |
1871 bool LibraryCallKit::inline_min_max(vmIntrinsics::ID id) { | |
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1872 set_result(generate_min_max(id, argument(0), argument(1))); |
0 | 1873 return true; |
1874 } | |
1875 | |
1876 Node* | |
1877 LibraryCallKit::generate_min_max(vmIntrinsics::ID id, Node* x0, Node* y0) { | |
1878 // These are the candidate return value: | |
1879 Node* xvalue = x0; | |
1880 Node* yvalue = y0; | |
1881 | |
1882 if (xvalue == yvalue) { | |
1883 return xvalue; | |
1884 } | |
1885 | |
1886 bool want_max = (id == vmIntrinsics::_max); | |
1887 | |
1888 const TypeInt* txvalue = _gvn.type(xvalue)->isa_int(); | |
1889 const TypeInt* tyvalue = _gvn.type(yvalue)->isa_int(); | |
1890 if (txvalue == NULL || tyvalue == NULL) return top(); | |
1891 // This is not really necessary, but it is consistent with a | |
1892 // hypothetical MaxINode::Value method: | |
1893 int widen = MAX2(txvalue->_widen, tyvalue->_widen); | |
1894 | |
1895 // %%% This folding logic should (ideally) be in a different place. | |
1896 // Some should be inside IfNode, and there to be a more reliable | |
1897 // transformation of ?: style patterns into cmoves. We also want | |
1898 // more powerful optimizations around cmove and min/max. | |
1899 | |
1900 // Try to find a dominating comparison of these guys. | |
1901 // It can simplify the index computation for Arrays.copyOf | |
1902 // and similar uses of System.arraycopy. | |
1903 // First, compute the normalized version of CmpI(x, y). | |
1904 int cmp_op = Op_CmpI; | |
1905 Node* xkey = xvalue; | |
1906 Node* ykey = yvalue; | |
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1907 Node* ideal_cmpxy = _gvn.transform( new(C) CmpINode(xkey, ykey) ); |
0 | 1908 if (ideal_cmpxy->is_Cmp()) { |
1909 // E.g., if we have CmpI(length - offset, count), | |
1910 // it might idealize to CmpI(length, count + offset) | |
1911 cmp_op = ideal_cmpxy->Opcode(); | |
1912 xkey = ideal_cmpxy->in(1); | |
1913 ykey = ideal_cmpxy->in(2); | |
1914 } | |
1915 | |
1916 // Start by locating any relevant comparisons. | |
1917 Node* start_from = (xkey->outcnt() < ykey->outcnt()) ? xkey : ykey; | |
1918 Node* cmpxy = NULL; | |
1919 Node* cmpyx = NULL; | |
1920 for (DUIterator_Fast kmax, k = start_from->fast_outs(kmax); k < kmax; k++) { | |
1921 Node* cmp = start_from->fast_out(k); | |
1922 if (cmp->outcnt() > 0 && // must have prior uses | |
1923 cmp->in(0) == NULL && // must be context-independent | |
1924 cmp->Opcode() == cmp_op) { // right kind of compare | |
1925 if (cmp->in(1) == xkey && cmp->in(2) == ykey) cmpxy = cmp; | |
1926 if (cmp->in(1) == ykey && cmp->in(2) == xkey) cmpyx = cmp; | |
1927 } | |
1928 } | |
1929 | |
1930 const int NCMPS = 2; | |
1931 Node* cmps[NCMPS] = { cmpxy, cmpyx }; | |
1932 int cmpn; | |
1933 for (cmpn = 0; cmpn < NCMPS; cmpn++) { | |
1934 if (cmps[cmpn] != NULL) break; // find a result | |
1935 } | |
1936 if (cmpn < NCMPS) { | |
1937 // Look for a dominating test that tells us the min and max. | |
1938 int depth = 0; // Limit search depth for speed | |
1939 Node* dom = control(); | |
1940 for (; dom != NULL; dom = IfNode::up_one_dom(dom, true)) { | |
1941 if (++depth >= 100) break; | |
1942 Node* ifproj = dom; | |
1943 if (!ifproj->is_Proj()) continue; | |
1944 Node* iff = ifproj->in(0); | |
1945 if (!iff->is_If()) continue; | |
1946 Node* bol = iff->in(1); | |
1947 if (!bol->is_Bool()) continue; | |
1948 Node* cmp = bol->in(1); | |
1949 if (cmp == NULL) continue; | |
1950 for (cmpn = 0; cmpn < NCMPS; cmpn++) | |
1951 if (cmps[cmpn] == cmp) break; | |
1952 if (cmpn == NCMPS) continue; | |
1953 BoolTest::mask btest = bol->as_Bool()->_test._test; | |
1954 if (ifproj->is_IfFalse()) btest = BoolTest(btest).negate(); | |
1955 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); | |
1956 // At this point, we know that 'x btest y' is true. | |
1957 switch (btest) { | |
1958 case BoolTest::eq: | |
1959 // They are proven equal, so we can collapse the min/max. | |
1960 // Either value is the answer. Choose the simpler. | |
1961 if (is_simple_name(yvalue) && !is_simple_name(xvalue)) | |
1962 return yvalue; | |
1963 return xvalue; | |
1964 case BoolTest::lt: // x < y | |
1965 case BoolTest::le: // x <= y | |
1966 return (want_max ? yvalue : xvalue); | |
1967 case BoolTest::gt: // x > y | |
1968 case BoolTest::ge: // x >= y | |
1969 return (want_max ? xvalue : yvalue); | |
1970 } | |
1971 } | |
1972 } | |
1973 | |
1974 // We failed to find a dominating test. | |
1975 // Let's pick a test that might GVN with prior tests. | |
1976 Node* best_bol = NULL; | |
1977 BoolTest::mask best_btest = BoolTest::illegal; | |
1978 for (cmpn = 0; cmpn < NCMPS; cmpn++) { | |
1979 Node* cmp = cmps[cmpn]; | |
1980 if (cmp == NULL) continue; | |
1981 for (DUIterator_Fast jmax, j = cmp->fast_outs(jmax); j < jmax; j++) { | |
1982 Node* bol = cmp->fast_out(j); | |
1983 if (!bol->is_Bool()) continue; | |
1984 BoolTest::mask btest = bol->as_Bool()->_test._test; | |
1985 if (btest == BoolTest::eq || btest == BoolTest::ne) continue; | |
1986 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); | |
1987 if (bol->outcnt() > (best_bol == NULL ? 0 : best_bol->outcnt())) { | |
1988 best_bol = bol->as_Bool(); | |
1989 best_btest = btest; | |
1990 } | |
1991 } | |
1992 } | |
1993 | |
1994 Node* answer_if_true = NULL; | |
1995 Node* answer_if_false = NULL; | |
1996 switch (best_btest) { | |
1997 default: | |
1998 if (cmpxy == NULL) | |
1999 cmpxy = ideal_cmpxy; | |
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2000 best_bol = _gvn.transform( new(C) BoolNode(cmpxy, BoolTest::lt) ); |
0 | 2001 // and fall through: |
2002 case BoolTest::lt: // x < y | |
2003 case BoolTest::le: // x <= y | |
2004 answer_if_true = (want_max ? yvalue : xvalue); | |
2005 answer_if_false = (want_max ? xvalue : yvalue); | |
2006 break; | |
2007 case BoolTest::gt: // x > y | |
2008 case BoolTest::ge: // x >= y | |
2009 answer_if_true = (want_max ? xvalue : yvalue); | |
2010 answer_if_false = (want_max ? yvalue : xvalue); | |
2011 break; | |
2012 } | |
2013 | |
2014 jint hi, lo; | |
2015 if (want_max) { | |
2016 // We can sharpen the minimum. | |
2017 hi = MAX2(txvalue->_hi, tyvalue->_hi); | |
2018 lo = MAX2(txvalue->_lo, tyvalue->_lo); | |
2019 } else { | |
2020 // We can sharpen the maximum. | |
2021 hi = MIN2(txvalue->_hi, tyvalue->_hi); | |
2022 lo = MIN2(txvalue->_lo, tyvalue->_lo); | |
2023 } | |
2024 | |
2025 // Use a flow-free graph structure, to avoid creating excess control edges | |
2026 // which could hinder other optimizations. | |
2027 // Since Math.min/max is often used with arraycopy, we want | |
2028 // tightly_coupled_allocation to be able to see beyond min/max expressions. | |
2029 Node* cmov = CMoveNode::make(C, NULL, best_bol, | |
2030 answer_if_false, answer_if_true, | |
2031 TypeInt::make(lo, hi, widen)); | |
2032 | |
2033 return _gvn.transform(cmov); | |
2034 | |
2035 /* | |
2036 // This is not as desirable as it may seem, since Min and Max | |
2037 // nodes do not have a full set of optimizations. | |
2038 // And they would interfere, anyway, with 'if' optimizations | |
2039 // and with CMoveI canonical forms. | |
2040 switch (id) { | |
2041 case vmIntrinsics::_min: | |
2042 result_val = _gvn.transform(new (C, 3) MinINode(x,y)); break; | |
2043 case vmIntrinsics::_max: | |
2044 result_val = _gvn.transform(new (C, 3) MaxINode(x,y)); break; | |
2045 default: | |
2046 ShouldNotReachHere(); | |
2047 } | |
2048 */ | |
2049 } | |
2050 | |
2051 inline int | |
2052 LibraryCallKit::classify_unsafe_addr(Node* &base, Node* &offset) { | |
2053 const TypePtr* base_type = TypePtr::NULL_PTR; | |
2054 if (base != NULL) base_type = _gvn.type(base)->isa_ptr(); | |
2055 if (base_type == NULL) { | |
2056 // Unknown type. | |
2057 return Type::AnyPtr; | |
2058 } else if (base_type == TypePtr::NULL_PTR) { | |
2059 // Since this is a NULL+long form, we have to switch to a rawptr. | |
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2060 base = _gvn.transform( new (C) CastX2PNode(offset) ); |
0 | 2061 offset = MakeConX(0); |
2062 return Type::RawPtr; | |
2063 } else if (base_type->base() == Type::RawPtr) { | |
2064 return Type::RawPtr; | |
2065 } else if (base_type->isa_oopptr()) { | |
2066 // Base is never null => always a heap address. | |
2067 if (base_type->ptr() == TypePtr::NotNull) { | |
2068 return Type::OopPtr; | |
2069 } | |
2070 // Offset is small => always a heap address. | |
2071 const TypeX* offset_type = _gvn.type(offset)->isa_intptr_t(); | |
2072 if (offset_type != NULL && | |
2073 base_type->offset() == 0 && // (should always be?) | |
2074 offset_type->_lo >= 0 && | |
2075 !MacroAssembler::needs_explicit_null_check(offset_type->_hi)) { | |
2076 return Type::OopPtr; | |
2077 } | |
2078 // Otherwise, it might either be oop+off or NULL+addr. | |
2079 return Type::AnyPtr; | |
2080 } else { | |
2081 // No information: | |
2082 return Type::AnyPtr; | |
2083 } | |
2084 } | |
2085 | |
2086 inline Node* LibraryCallKit::make_unsafe_address(Node* base, Node* offset) { | |
2087 int kind = classify_unsafe_addr(base, offset); | |
2088 if (kind == Type::RawPtr) { | |
2089 return basic_plus_adr(top(), base, offset); | |
2090 } else { | |
2091 return basic_plus_adr(base, offset); | |
2092 } | |
2093 } | |
2094 | |
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2095 //--------------------------inline_number_methods----------------------------- |
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2096 // inline int Integer.numberOfLeadingZeros(int) |
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2097 // inline int Long.numberOfLeadingZeros(long) |
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2098 // |
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2099 // inline int Integer.numberOfTrailingZeros(int) |
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2100 // inline int Long.numberOfTrailingZeros(long) |
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2101 // |
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2102 // inline int Integer.bitCount(int) |
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2103 // inline int Long.bitCount(long) |
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2104 // |
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2105 // inline char Character.reverseBytes(char) |
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2106 // inline short Short.reverseBytes(short) |
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2107 // inline int Integer.reverseBytes(int) |
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2108 // inline long Long.reverseBytes(long) |
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2109 bool LibraryCallKit::inline_number_methods(vmIntrinsics::ID id) { |
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2110 Node* arg = argument(0); |
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2111 Node* n; |
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2112 switch (id) { |
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2113 case vmIntrinsics::_numberOfLeadingZeros_i: n = new (C) CountLeadingZerosINode( arg); break; |
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2114 case vmIntrinsics::_numberOfLeadingZeros_l: n = new (C) CountLeadingZerosLNode( arg); break; |
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2115 case vmIntrinsics::_numberOfTrailingZeros_i: n = new (C) CountTrailingZerosINode(arg); break; |
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2116 case vmIntrinsics::_numberOfTrailingZeros_l: n = new (C) CountTrailingZerosLNode(arg); break; |
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2117 case vmIntrinsics::_bitCount_i: n = new (C) PopCountINode( arg); break; |
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2118 case vmIntrinsics::_bitCount_l: n = new (C) PopCountLNode( arg); break; |
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2119 case vmIntrinsics::_reverseBytes_c: n = new (C) ReverseBytesUSNode(0, arg); break; |
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2120 case vmIntrinsics::_reverseBytes_s: n = new (C) ReverseBytesSNode( 0, arg); break; |
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2121 case vmIntrinsics::_reverseBytes_i: n = new (C) ReverseBytesINode( 0, arg); break; |
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2122 case vmIntrinsics::_reverseBytes_l: n = new (C) ReverseBytesLNode( 0, arg); break; |
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2123 default: fatal_unexpected_iid(id); break; |
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2124 } |
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2125 set_result(_gvn.transform(n)); |
0 | 2126 return true; |
2127 } | |
2128 | |
2129 //----------------------------inline_unsafe_access---------------------------- | |
2130 | |
2131 const static BasicType T_ADDRESS_HOLDER = T_LONG; | |
2132 | |
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2133 // Helper that guards and inserts a pre-barrier. |
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2134 void LibraryCallKit::insert_pre_barrier(Node* base_oop, Node* offset, |
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2135 Node* pre_val, bool need_mem_bar) { |
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2136 // We could be accessing the referent field of a reference object. If so, when G1 |
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2137 // is enabled, we need to log the value in the referent field in an SATB buffer. |
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2138 // This routine performs some compile time filters and generates suitable |
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2139 // runtime filters that guard the pre-barrier code. |
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2140 // Also add memory barrier for non volatile load from the referent field |
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2141 // to prevent commoning of loads across safepoint. |
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2142 if (!UseG1GC && !need_mem_bar) |
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2143 return; |
3249
e1162778c1c8
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|
2144 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2145 // Some compile time checks. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2146 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2147 // 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
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|
2148 const TypeX* otype = offset->find_intptr_t_type(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2149 if (otype != NULL && otype->is_con() && |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2150 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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|
2151 // Constant offset but not the reference_offset so just return |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2152 return; |
e1162778c1c8
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johnc
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|
2153 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2154 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2155 // We only need to generate the runtime guards for instances. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2156 const TypeOopPtr* btype = base_oop->bottom_type()->isa_oopptr(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2157 if (btype != NULL) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2158 if (btype->isa_aryptr()) { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2159 // Array type so nothing to do |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2160 return; |
e1162778c1c8
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johnc
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|
2161 } |
e1162778c1c8
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|
2162 |
e1162778c1c8
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|
2163 const TypeInstPtr* itype = btype->isa_instptr(); |
e1162778c1c8
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johnc
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|
2164 if (itype != NULL) { |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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|
2165 // 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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|
2166 // _not_ a sub-class of Reference and _not_ Object? |
3249
e1162778c1c8
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johnc
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|
2167 ciKlass* klass = itype->klass(); |
6615
09aad8452938
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|
2168 if ( klass->is_loaded() && |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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|
2169 !klass->is_subtype_of(env()->Reference_klass()) && |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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|
2170 !env()->Object_klass()->is_subtype_of(klass)) { |
3249
e1162778c1c8
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|
2171 return; |
e1162778c1c8
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johnc
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|
2172 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2173 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2174 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
2175 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2176 // The compile time filters did not reject base_oop/offset so |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2177 // we need to generate the following runtime filters |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2178 // |
e1162778c1c8
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|
2179 // if (offset == java_lang_ref_Reference::_reference_offset) { |
6615
09aad8452938
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|
2180 // if (instance_of(base, java.lang.ref.Reference)) { |
09aad8452938
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|
2181 // pre_barrier(_, pre_val, ...); |
3249
e1162778c1c8
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|
2182 // } |
e1162778c1c8
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|
2183 // } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2184 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
2185 float likely = PROB_LIKELY( 0.999); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
2186 float unlikely = PROB_UNLIKELY(0.999); |
3249
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|
2187 |
3255 | 2188 IdealKit ideal(this); |
3249
e1162778c1c8
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johnc
parents:
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|
2189 #define __ ideal. |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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diff
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|
2190 |
3254
59766fd005ff
7035117: G1: nsk/stress/jni/jnistress002 fails with assertion failure
johnc
parents:
3252
diff
changeset
|
2191 Node* referent_off = __ ConX(java_lang_ref_Reference::referent_offset); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2192 |
e1162778c1c8
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johnc
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|
2193 __ if_then(offset, BoolTest::eq, referent_off, unlikely); { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2194 // Update graphKit memory and control from IdealKit. |
3255 | 2195 sync_kit(ideal); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2196 |
e1162778c1c8
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johnc
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|
2197 Node* ref_klass_con = makecon(TypeKlassPtr::make(env()->Reference_klass())); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2198 Node* is_instof = gen_instanceof(base_oop, ref_klass_con); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2199 |
e1162778c1c8
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johnc
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diff
changeset
|
2200 // Update IdealKit memory and control from graphKit. |
3255 | 2201 __ sync_kit(this); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
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|
2202 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2203 Node* one = __ ConI(1); |
6615
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7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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|
2204 // is_instof == 0 if base_oop == NULL |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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changeset
|
2205 __ if_then(is_instof, BoolTest::eq, one, unlikely); { |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
changeset
|
2206 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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diff
changeset
|
2207 // Update graphKit from IdeakKit. |
3255 | 2208 sync_kit(ideal); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
changeset
|
2209 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
changeset
|
2210 // 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:
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changeset
|
2211 pre_barrier(false /* do_load */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
changeset
|
2212 __ ctrl(), |
3258
edd9b016deb6
7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment
johnc
parents:
3255
diff
changeset
|
2213 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
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diff
changeset
|
2214 pre_val /* pre_val */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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changeset
|
2215 T_OBJECT); |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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parents:
6266
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|
2216 if (need_mem_bar) { |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2217 // 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
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6266
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changeset
|
2218 // 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
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changeset
|
2219 insert_mem_bar(Op_MemBarCPUOrder); |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
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changeset
|
2220 } |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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|
2221 // Update IdealKit from graphKit. |
3255 | 2222 __ sync_kit(this); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
changeset
|
2223 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
changeset
|
2224 } __ end_if(); // _ref_type != ref_none |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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changeset
|
2225 } __ end_if(); // offset == referent_offset |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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|
2226 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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changeset
|
2227 // Final sync IdealKit and GraphKit. |
3255 | 2228 final_sync(ideal); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
changeset
|
2229 #undef __ |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
changeset
|
2230 } |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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diff
changeset
|
2231 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
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diff
changeset
|
2232 |
0 | 2233 // Interpret Unsafe.fieldOffset cookies correctly: |
2234 extern jlong Unsafe_field_offset_to_byte_offset(jlong field_offset); | |
2235 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2236 const TypeOopPtr* LibraryCallKit::sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type, bool is_native_ptr) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
2237 // Attempt to infer a sharper value type from the offset and base type. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
2238 ciKlass* sharpened_klass = NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
2239 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2240 // See if it is an instance field, with an object type. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
2241 if (alias_type->field() != NULL) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
2242 assert(!is_native_ptr, "native pointer op cannot use a java address"); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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changeset
|
2243 if (alias_type->field()->type()->is_klass()) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2244 sharpened_klass = alias_type->field()->type()->as_klass(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2245 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
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diff
changeset
|
2246 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
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changeset
|
2247 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2248 // See if it is a narrow oop array. |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
2249 if (adr_type->isa_aryptr()) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2250 if (adr_type->offset() >= objArrayOopDesc::base_offset_in_bytes()) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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changeset
|
2251 const TypeOopPtr *elem_type = adr_type->is_aryptr()->elem()->isa_oopptr(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
2252 if (elem_type != NULL) { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
changeset
|
2253 sharpened_klass = elem_type->klass(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2254 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2255 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2256 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
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diff
changeset
|
2257 |
6847
65d07d9ee446
8000263: JSR 292: signature types may appear to be unloaded
twisti
parents:
6804
diff
changeset
|
2258 // The sharpened class might be unloaded if there is no class loader |
65d07d9ee446
8000263: JSR 292: signature types may appear to be unloaded
twisti
parents:
6804
diff
changeset
|
2259 // contraint in place. |
65d07d9ee446
8000263: JSR 292: signature types may appear to be unloaded
twisti
parents:
6804
diff
changeset
|
2260 if (sharpened_klass != NULL && sharpened_klass->is_loaded()) { |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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diff
changeset
|
2261 const TypeOopPtr* tjp = TypeOopPtr::make_from_klass(sharpened_klass); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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|
2262 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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|
2263 #ifndef PRODUCT |
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2264 if (PrintIntrinsics || PrintInlining || PrintOptoInlining) { |
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2265 tty->print(" from base type: "); adr_type->dump(); |
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2266 tty->print(" sharpened value: "); tjp->dump(); |
6795
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2267 } |
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2268 #endif |
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2269 // Sharpen the value type. |
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2270 return tjp; |
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2271 } |
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2272 return NULL; |
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2273 } |
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2274 |
0 | 2275 bool LibraryCallKit::inline_unsafe_access(bool is_native_ptr, bool is_store, BasicType type, bool is_volatile) { |
2276 if (callee()->is_static()) return false; // caller must have the capability! | |
2277 | |
2278 #ifndef PRODUCT | |
2279 { | |
2280 ResourceMark rm; | |
2281 // Check the signatures. | |
7194
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2282 ciSignature* sig = callee()->signature(); |
0 | 2283 #ifdef ASSERT |
2284 if (!is_store) { | |
2285 // Object getObject(Object base, int/long offset), etc. | |
2286 BasicType rtype = sig->return_type()->basic_type(); | |
2287 if (rtype == T_ADDRESS_HOLDER && callee()->name() == ciSymbol::getAddress_name()) | |
2288 rtype = T_ADDRESS; // it is really a C void* | |
2289 assert(rtype == type, "getter must return the expected value"); | |
2290 if (!is_native_ptr) { | |
2291 assert(sig->count() == 2, "oop getter has 2 arguments"); | |
2292 assert(sig->type_at(0)->basic_type() == T_OBJECT, "getter base is object"); | |
2293 assert(sig->type_at(1)->basic_type() == T_LONG, "getter offset is correct"); | |
2294 } else { | |
2295 assert(sig->count() == 1, "native getter has 1 argument"); | |
2296 assert(sig->type_at(0)->basic_type() == T_LONG, "getter base is long"); | |
2297 } | |
2298 } else { | |
2299 // void putObject(Object base, int/long offset, Object x), etc. | |
2300 assert(sig->return_type()->basic_type() == T_VOID, "putter must not return a value"); | |
2301 if (!is_native_ptr) { | |
2302 assert(sig->count() == 3, "oop putter has 3 arguments"); | |
2303 assert(sig->type_at(0)->basic_type() == T_OBJECT, "putter base is object"); | |
2304 assert(sig->type_at(1)->basic_type() == T_LONG, "putter offset is correct"); | |
2305 } else { | |
2306 assert(sig->count() == 2, "native putter has 2 arguments"); | |
2307 assert(sig->type_at(0)->basic_type() == T_LONG, "putter base is long"); | |
2308 } | |
2309 BasicType vtype = sig->type_at(sig->count()-1)->basic_type(); | |
2310 if (vtype == T_ADDRESS_HOLDER && callee()->name() == ciSymbol::putAddress_name()) | |
2311 vtype = T_ADDRESS; // it is really a C void* | |
2312 assert(vtype == type, "putter must accept the expected value"); | |
2313 } | |
2314 #endif // ASSERT | |
2315 } | |
2316 #endif //PRODUCT | |
2317 | |
2318 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2319 | |
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2320 Node* receiver = argument(0); // type: oop |
0 | 2321 |
2322 // Build address expression. See the code in inline_unsafe_prefetch. | |
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2323 Node* adr; |
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2324 Node* heap_base_oop = top(); |
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2325 Node* offset = top(); |
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2326 Node* val; |
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2327 |
0 | 2328 if (!is_native_ptr) { |
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2329 // The base is either a Java object or a value produced by Unsafe.staticFieldBase |
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2330 Node* base = argument(1); // type: oop |
0 | 2331 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset |
7194
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2332 offset = argument(2); // type: long |
0 | 2333 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset |
2334 // to be plain byte offsets, which are also the same as those accepted | |
2335 // by oopDesc::field_base. | |
2336 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
2337 "fieldOffset must be byte-scaled"); | |
2338 // 32-bit machines ignore the high half! | |
2339 offset = ConvL2X(offset); | |
2340 adr = make_unsafe_address(base, offset); | |
2341 heap_base_oop = base; | |
7194
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2342 val = is_store ? argument(4) : NULL; |
0 | 2343 } else { |
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2344 Node* ptr = argument(1); // type: long |
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2345 ptr = ConvL2X(ptr); // adjust Java long to machine word |
0 | 2346 adr = make_unsafe_address(NULL, ptr); |
7194
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2347 val = is_store ? argument(3) : NULL; |
0 | 2348 } |
2349 | |
2350 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2351 | |
2352 // First guess at the value type. | |
2353 const Type *value_type = Type::get_const_basic_type(type); | |
2354 | |
2355 // Try to categorize the address. If it comes up as TypeJavaPtr::BOTTOM, | |
2356 // there was not enough information to nail it down. | |
2357 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2358 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); | |
2359 | |
2360 // We will need memory barriers unless we can determine a unique | |
2361 // alias category for this reference. (Note: If for some reason | |
2362 // the barriers get omitted and the unsafe reference begins to "pollute" | |
2363 // the alias analysis of the rest of the graph, either Compile::can_alias | |
2364 // or Compile::must_alias will throw a diagnostic assert.) | |
2365 bool need_mem_bar = (alias_type->adr_type() == TypeOopPtr::BOTTOM); | |
2366 | |
3249
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2367 // If we are reading the value of the referent field of a Reference |
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2368 // object (either by using Unsafe directly or through reflection) |
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2369 // then, if G1 is enabled, we need to record the referent in an |
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2370 // SATB log buffer using the pre-barrier mechanism. |
6615
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2371 // Also we need to add memory barrier to prevent commoning reads |
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7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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2372 // from this field across safepoint since GC can change its value. |
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2373 bool need_read_barrier = !is_native_ptr && !is_store && |
3249
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2374 offset != top() && heap_base_oop != top(); |
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2375 |
0 | 2376 if (!is_store && type == T_OBJECT) { |
6795
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2377 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type, is_native_ptr); |
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2378 if (tjp != NULL) { |
0 | 2379 value_type = tjp; |
2380 } | |
2381 } | |
2382 | |
7194
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2383 receiver = null_check(receiver); |
0 | 2384 if (stopped()) { |
2385 return true; | |
2386 } | |
2387 // Heap pointers get a null-check from the interpreter, | |
2388 // as a courtesy. However, this is not guaranteed by Unsafe, | |
2389 // and it is not possible to fully distinguish unintended nulls | |
2390 // from intended ones in this API. | |
2391 | |
2392 if (is_volatile) { | |
2393 // We need to emit leading and trailing CPU membars (see below) in | |
2394 // addition to memory membars when is_volatile. This is a little | |
2395 // too strong, but avoids the need to insert per-alias-type | |
2396 // volatile membars (for stores; compare Parse::do_put_xxx), which | |
605 | 2397 // we cannot do effectively here because we probably only have a |
0 | 2398 // rough approximation of type. |
2399 need_mem_bar = true; | |
2400 // For Stores, place a memory ordering barrier now. | |
2401 if (is_store) | |
2402 insert_mem_bar(Op_MemBarRelease); | |
2403 } | |
2404 | |
2405 // Memory barrier to prevent normal and 'unsafe' accesses from | |
2406 // bypassing each other. Happens after null checks, so the | |
2407 // exception paths do not take memory state from the memory barrier, | |
2408 // so there's no problems making a strong assert about mixing users | |
2409 // of safe & unsafe memory. Otherwise fails in a CTW of rt.jar | |
2410 // around 5701, class sun/reflect/UnsafeBooleanFieldAccessorImpl. | |
2411 if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder); | |
2412 | |
2413 if (!is_store) { | |
2414 Node* p = make_load(control(), adr, value_type, type, adr_type, is_volatile); | |
7194
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2415 // load value |
0 | 2416 switch (type) { |
2417 case T_BOOLEAN: | |
2418 case T_CHAR: | |
2419 case T_BYTE: | |
2420 case T_SHORT: | |
2421 case T_INT: | |
7194
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2422 case T_LONG: |
0 | 2423 case T_FLOAT: |
7194
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2424 case T_DOUBLE: |
3249
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2425 break; |
0 | 2426 case T_OBJECT: |
3249
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2427 if (need_read_barrier) { |
7194
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2428 insert_pre_barrier(heap_base_oop, offset, p, !(is_volatile || need_mem_bar)); |
3249
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2429 } |
0 | 2430 break; |
2431 case T_ADDRESS: | |
2432 // Cast to an int type. | |
7194
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2433 p = _gvn.transform(new (C) CastP2XNode(NULL, p)); |
0 | 2434 p = ConvX2L(p); |
7194
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2435 break; |
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|
2436 default: |
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2437 fatal(err_msg_res("unexpected type %d: %s", type, type2name(type))); |
0 | 2438 break; |
2439 } | |
7194
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2440 // The load node has the control of the preceding MemBarCPUOrder. All |
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2441 // following nodes will have the control of the MemBarCPUOrder inserted at |
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2442 // the end of this method. So, pushing the load onto the stack at a later |
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2443 // point is fine. |
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2444 set_result(p); |
0 | 2445 } else { |
2446 // place effect of store into memory | |
2447 switch (type) { | |
2448 case T_DOUBLE: | |
2449 val = dstore_rounding(val); | |
2450 break; | |
2451 case T_ADDRESS: | |
2452 // Repackage the long as a pointer. | |
2453 val = ConvL2X(val); | |
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2454 val = _gvn.transform( new (C) CastX2PNode(val) ); |
0 | 2455 break; |
2456 } | |
2457 | |
2458 if (type != T_OBJECT ) { | |
2459 (void) store_to_memory(control(), adr, val, type, adr_type, is_volatile); | |
2460 } else { | |
2461 // Possibly an oop being stored to Java heap or native memory | |
2462 if (!TypePtr::NULL_PTR->higher_equal(_gvn.type(heap_base_oop))) { | |
2463 // oop to Java heap. | |
825 | 2464 (void) store_oop_to_unknown(control(), heap_base_oop, adr, adr_type, val, type); |
0 | 2465 } else { |
2466 // We can't tell at compile time if we are storing in the Java heap or outside | |
2467 // of it. So we need to emit code to conditionally do the proper type of | |
2468 // store. | |
2469 | |
2444
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2470 IdealKit ideal(this); |
851
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2471 #define __ ideal. |
0 | 2472 // QQQ who knows what probability is here?? |
851
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2473 __ if_then(heap_base_oop, BoolTest::ne, null(), PROB_UNLIKELY(0.999)); { |
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2474 // Sync IdealKit and graphKit. |
2444
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2475 sync_kit(ideal); |
851
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2476 Node* st = store_oop_to_unknown(control(), heap_base_oop, adr, adr_type, val, type); |
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2477 // Update IdealKit memory. |
2444
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2478 __ sync_kit(this); |
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2479 } __ else_(); { |
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2480 __ store(__ ctrl(), adr, val, type, alias_type->index(), is_volatile); |
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2481 } __ end_if(); |
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2482 // Final sync IdealKit and GraphKit. |
2444
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2483 final_sync(ideal); |
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|
2484 #undef __ |
0 | 2485 } |
2486 } | |
2487 } | |
2488 | |
2489 if (is_volatile) { | |
2490 if (!is_store) | |
2491 insert_mem_bar(Op_MemBarAcquire); | |
2492 else | |
2493 insert_mem_bar(Op_MemBarVolatile); | |
2494 } | |
2495 | |
2496 if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder); | |
2497 | |
2498 return true; | |
2499 } | |
2500 | |
2501 //----------------------------inline_unsafe_prefetch---------------------------- | |
2502 | |
2503 bool LibraryCallKit::inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static) { | |
2504 #ifndef PRODUCT | |
2505 { | |
2506 ResourceMark rm; | |
2507 // Check the signatures. | |
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2508 ciSignature* sig = callee()->signature(); |
0 | 2509 #ifdef ASSERT |
2510 // Object getObject(Object base, int/long offset), etc. | |
2511 BasicType rtype = sig->return_type()->basic_type(); | |
2512 if (!is_native_ptr) { | |
2513 assert(sig->count() == 2, "oop prefetch has 2 arguments"); | |
2514 assert(sig->type_at(0)->basic_type() == T_OBJECT, "prefetch base is object"); | |
2515 assert(sig->type_at(1)->basic_type() == T_LONG, "prefetcha offset is correct"); | |
2516 } else { | |
2517 assert(sig->count() == 1, "native prefetch has 1 argument"); | |
2518 assert(sig->type_at(0)->basic_type() == T_LONG, "prefetch base is long"); | |
2519 } | |
2520 #endif // ASSERT | |
2521 } | |
2522 #endif // !PRODUCT | |
2523 | |
2524 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2525 | |
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2526 const int idx = is_static ? 0 : 1; |
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2527 if (!is_static) { |
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2528 null_check_receiver(); |
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2529 if (stopped()) { |
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2530 return true; |
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2531 } |
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2532 } |
0 | 2533 |
2534 // Build address expression. See the code in inline_unsafe_access. | |
2535 Node *adr; | |
2536 if (!is_native_ptr) { | |
7194
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2537 // The base is either a Java object or a value produced by Unsafe.staticFieldBase |
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2538 Node* base = argument(idx + 0); // type: oop |
0 | 2539 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset |
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2540 Node* offset = argument(idx + 1); // type: long |
0 | 2541 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset |
2542 // to be plain byte offsets, which are also the same as those accepted | |
2543 // by oopDesc::field_base. | |
2544 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
2545 "fieldOffset must be byte-scaled"); | |
2546 // 32-bit machines ignore the high half! | |
2547 offset = ConvL2X(offset); | |
2548 adr = make_unsafe_address(base, offset); | |
2549 } else { | |
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2550 Node* ptr = argument(idx + 0); // type: long |
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2551 ptr = ConvL2X(ptr); // adjust Java long to machine word |
0 | 2552 adr = make_unsafe_address(NULL, ptr); |
2553 } | |
2554 | |
2555 // Generate the read or write prefetch | |
2556 Node *prefetch; | |
2557 if (is_store) { | |
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2558 prefetch = new (C) PrefetchWriteNode(i_o(), adr); |
0 | 2559 } else { |
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2560 prefetch = new (C) PrefetchReadNode(i_o(), adr); |
0 | 2561 } |
2562 prefetch->init_req(0, control()); | |
2563 set_i_o(_gvn.transform(prefetch)); | |
2564 | |
2565 return true; | |
2566 } | |
2567 | |
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2568 //----------------------------inline_unsafe_load_store---------------------------- |
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2569 // This method serves a couple of different customers (depending on LoadStoreKind): |
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2570 // |
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2571 // LS_cmpxchg: |
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2572 // public final native boolean compareAndSwapObject(Object o, long offset, Object expected, Object x); |
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2573 // public final native boolean compareAndSwapInt( Object o, long offset, int expected, int x); |
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2574 // public final native boolean compareAndSwapLong( Object o, long offset, long expected, long x); |
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2575 // |
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2576 // LS_xadd: |
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2577 // public int getAndAddInt( Object o, long offset, int delta) |
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2578 // public long getAndAddLong(Object o, long offset, long delta) |
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2579 // |
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2580 // LS_xchg: |
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2581 // int getAndSet(Object o, long offset, int newValue) |
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2582 // long getAndSet(Object o, long offset, long newValue) |
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2583 // Object getAndSet(Object o, long offset, Object newValue) |
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2584 // |
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2585 bool LibraryCallKit::inline_unsafe_load_store(BasicType type, LoadStoreKind kind) { |
0 | 2586 // This basic scheme here is the same as inline_unsafe_access, but |
2587 // differs in enough details that combining them would make the code | |
2588 // overly confusing. (This is a true fact! I originally combined | |
2589 // them, but even I was confused by it!) As much code/comments as | |
2590 // possible are retained from inline_unsafe_access though to make | |
605 | 2591 // the correspondences clearer. - dl |
0 | 2592 |
2593 if (callee()->is_static()) return false; // caller must have the capability! | |
2594 | |
2595 #ifndef PRODUCT | |
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2596 BasicType rtype; |
0 | 2597 { |
2598 ResourceMark rm; | |
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2599 // Check the signatures. |
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2600 ciSignature* sig = callee()->signature(); |
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2601 rtype = sig->return_type()->basic_type(); |
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2602 if (kind == LS_xadd || kind == LS_xchg) { |
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2603 // Check the signatures. |
0 | 2604 #ifdef ASSERT |
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2605 assert(rtype == type, "get and set must return the expected type"); |
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2606 assert(sig->count() == 3, "get and set has 3 arguments"); |
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2607 assert(sig->type_at(0)->basic_type() == T_OBJECT, "get and set base is object"); |
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2608 assert(sig->type_at(1)->basic_type() == T_LONG, "get and set offset is long"); |
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2609 assert(sig->type_at(2)->basic_type() == type, "get and set must take expected type as new value/delta"); |
0 | 2610 #endif // ASSERT |
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2611 } else if (kind == LS_cmpxchg) { |
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2612 // Check the signatures. |
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2613 #ifdef ASSERT |
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2614 assert(rtype == T_BOOLEAN, "CAS must return boolean"); |
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2615 assert(sig->count() == 4, "CAS has 4 arguments"); |
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2616 assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object"); |
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2617 assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long"); |
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2618 #endif // ASSERT |
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2619 } else { |
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2620 ShouldNotReachHere(); |
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2621 } |
0 | 2622 } |
2623 #endif //PRODUCT | |
2624 | |
2625 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2626 | |
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2627 // Get arguments: |
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2628 Node* receiver = NULL; |
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2629 Node* base = NULL; |
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2630 Node* offset = NULL; |
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2631 Node* oldval = NULL; |
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2632 Node* newval = NULL; |
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2633 if (kind == LS_cmpxchg) { |
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2634 const bool two_slot_type = type2size[type] == 2; |
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2635 receiver = argument(0); // type: oop |
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2636 base = argument(1); // type: oop |
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2637 offset = argument(2); // type: long |
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2638 oldval = argument(4); // type: oop, int, or long |
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2639 newval = argument(two_slot_type ? 6 : 5); // type: oop, int, or long |
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2640 } else if (kind == LS_xadd || kind == LS_xchg){ |
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2641 receiver = argument(0); // type: oop |
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2642 base = argument(1); // type: oop |
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2643 offset = argument(2); // type: long |
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2644 oldval = NULL; |
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2645 newval = argument(4); // type: oop, int, or long |
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2646 } |
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2647 |
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2648 // Null check receiver. |
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2649 receiver = null_check(receiver); |
0 | 2650 if (stopped()) { |
2651 return true; | |
2652 } | |
2653 | |
2654 // Build field offset expression. | |
2655 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset | |
2656 // to be plain byte offsets, which are also the same as those accepted | |
2657 // by oopDesc::field_base. | |
2658 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); | |
2659 // 32-bit machines ignore the high half of long offsets | |
2660 offset = ConvL2X(offset); | |
2661 Node* adr = make_unsafe_address(base, offset); | |
2662 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2663 | |
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2664 // For CAS, unlike inline_unsafe_access, there seems no point in |
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2665 // trying to refine types. Just use the coarse types here. |
0 | 2666 const Type *value_type = Type::get_const_basic_type(type); |
2667 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2668 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); | |
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2669 |
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2670 if (kind == LS_xchg && type == T_OBJECT) { |
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2671 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type); |
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2672 if (tjp != NULL) { |
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2673 value_type = tjp; |
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2674 } |
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2675 } |
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2676 |
0 | 2677 int alias_idx = C->get_alias_index(adr_type); |
2678 | |
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2679 // Memory-model-wise, a LoadStore acts like a little synchronized |
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2680 // block, so needs barriers on each side. These don't translate |
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2681 // into actual barriers on most machines, but we still need rest of |
0 | 2682 // compiler to respect ordering. |
2683 | |
2684 insert_mem_bar(Op_MemBarRelease); | |
2685 insert_mem_bar(Op_MemBarCPUOrder); | |
2686 | |
2687 // 4984716: MemBars must be inserted before this | |
2688 // memory node in order to avoid a false | |
2689 // dependency which will confuse the scheduler. | |
2690 Node *mem = memory(alias_idx); | |
2691 | |
2692 // For now, we handle only those cases that actually exist: ints, | |
2693 // longs, and Object. Adding others should be straightforward. | |
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2694 Node* load_store; |
0 | 2695 switch(type) { |
2696 case T_INT: | |
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2697 if (kind == LS_xadd) { |
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2698 load_store = _gvn.transform(new (C) GetAndAddINode(control(), mem, adr, newval, adr_type)); |
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2699 } else if (kind == LS_xchg) { |
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2700 load_store = _gvn.transform(new (C) GetAndSetINode(control(), mem, adr, newval, adr_type)); |
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2701 } else if (kind == LS_cmpxchg) { |
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2702 load_store = _gvn.transform(new (C) CompareAndSwapINode(control(), mem, adr, newval, oldval)); |
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2703 } else { |
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|
2704 ShouldNotReachHere(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
2705 } |
0 | 2706 break; |
2707 case T_LONG: | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2708 if (kind == LS_xadd) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2709 load_store = _gvn.transform(new (C) GetAndAddLNode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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parents:
6725
diff
changeset
|
2710 } else if (kind == LS_xchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2711 load_store = _gvn.transform(new (C) GetAndSetLNode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2712 } else if (kind == LS_cmpxchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2713 load_store = _gvn.transform(new (C) CompareAndSwapLNode(control(), mem, adr, newval, oldval)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2714 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2715 ShouldNotReachHere(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2716 } |
0 | 2717 break; |
2718 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
|
2719 // 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
|
2720 // 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
|
2721 // 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
|
2722 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
|
2723 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
|
2724 |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2725 // Reference stores need a store barrier. |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2726 pre_barrier(true /* do_load*/, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2727 control(), base, adr, alias_idx, newval, value_type->make_oopptr(), |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2728 NULL /* pre_val*/, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2729 T_OBJECT); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
34
diff
changeset
|
2730 #ifdef _LP64 |
163 | 2731 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
|
2732 Node *newval_enc = _gvn.transform(new (C) EncodePNode(newval, newval->bottom_type()->make_narrowoop())); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
2733 if (kind == LS_xchg) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2734 load_store = _gvn.transform(new (C) GetAndSetNNode(control(), mem, adr, |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2735 newval_enc, adr_type, value_type->make_narrowoop())); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2736 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2737 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
|
2738 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
|
2739 load_store = _gvn.transform(new (C) CompareAndSwapNNode(control(), mem, adr, |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2740 newval_enc, oldval_enc)); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
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|
2741 } |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
34
diff
changeset
|
2742 } else |
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
34
diff
changeset
|
2743 #endif |
221
1e026f8da827
6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents:
174
diff
changeset
|
2744 { |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2745 if (kind == LS_xchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2746 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
|
2747 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2748 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
|
2749 load_store = _gvn.transform(new (C) CompareAndSwapPNode(control(), mem, adr, newval, oldval)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
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|
2750 } |
221
1e026f8da827
6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents:
174
diff
changeset
|
2751 } |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2752 post_barrier(control(), load_store, base, adr, alias_idx, newval, T_OBJECT, true); |
0 | 2753 break; |
2754 default: | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2755 fatal(err_msg_res("unexpected type %d: %s", type, type2name(type))); |
0 | 2756 break; |
2757 } | |
2758 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2759 // SCMemProjNodes represent the memory state of a LoadStore. Their |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2760 // main role is to prevent LoadStore nodes from being optimized away |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2761 // when their results aren't used. |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2762 Node* proj = _gvn.transform( new (C) SCMemProjNode(load_store)); |
0 | 2763 set_memory(proj, alias_idx); |
2764 | |
2765 // Add the trailing membar surrounding the access | |
2766 insert_mem_bar(Op_MemBarCPUOrder); | |
2767 insert_mem_bar(Op_MemBarAcquire); | |
2768 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2769 #ifdef _LP64 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2770 if (type == T_OBJECT && adr->bottom_type()->is_ptr_to_narrowoop() && kind == LS_xchg) { |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2771 load_store = _gvn.transform(new (C) DecodeNNode(load_store, load_store->bottom_type()->make_ptr())); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2772 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2773 #endif |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2774 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2775 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
|
2776 set_result(load_store); |
0 | 2777 return true; |
2778 } | |
2779 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2780 //----------------------------inline_unsafe_ordered_store---------------------- |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2781 // 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
|
2782 // 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
|
2783 // public native void sun.misc.Unsafe.putOrderedLong(Object o, long offset, long x); |
0 | 2784 bool LibraryCallKit::inline_unsafe_ordered_store(BasicType type) { |
2785 // This is another variant of inline_unsafe_access, differing in | |
2786 // that it always issues store-store ("release") barrier and ensures | |
2787 // store-atomicity (which only matters for "long"). | |
2788 | |
2789 if (callee()->is_static()) return false; // caller must have the capability! | |
2790 | |
2791 #ifndef PRODUCT | |
2792 { | |
2793 ResourceMark rm; | |
2794 // Check the signatures. | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2795 ciSignature* sig = callee()->signature(); |
0 | 2796 #ifdef ASSERT |
2797 BasicType rtype = sig->return_type()->basic_type(); | |
2798 assert(rtype == T_VOID, "must return void"); | |
2799 assert(sig->count() == 3, "has 3 arguments"); | |
2800 assert(sig->type_at(0)->basic_type() == T_OBJECT, "base is object"); | |
2801 assert(sig->type_at(1)->basic_type() == T_LONG, "offset is long"); | |
2802 #endif // ASSERT | |
2803 } | |
2804 #endif //PRODUCT | |
2805 | |
2806 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2807 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2808 // Get arguments: |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2809 Node* receiver = argument(0); // type: oop |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2810 Node* base = argument(1); // type: oop |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2811 Node* offset = argument(2); // type: long |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2812 Node* val = argument(4); // type: oop, int, or long |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2813 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2814 // Null check receiver. |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2815 receiver = null_check(receiver); |
0 | 2816 if (stopped()) { |
2817 return true; | |
2818 } | |
2819 | |
2820 // Build field offset expression. | |
2821 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); | |
2822 // 32-bit machines ignore the high half of long offsets | |
2823 offset = ConvL2X(offset); | |
2824 Node* adr = make_unsafe_address(base, offset); | |
2825 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2826 const Type *value_type = Type::get_const_basic_type(type); | |
2827 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2828 | |
2829 insert_mem_bar(Op_MemBarRelease); | |
2830 insert_mem_bar(Op_MemBarCPUOrder); | |
2831 // Ensure that the store is atomic for longs: | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2832 const bool require_atomic_access = true; |
0 | 2833 Node* store; |
2834 if (type == T_OBJECT) // reference stores need a store barrier. | |
825 | 2835 store = store_oop_to_unknown(control(), base, adr, adr_type, val, type); |
0 | 2836 else { |
2837 store = store_to_memory(control(), adr, val, type, adr_type, require_atomic_access); | |
2838 } | |
2839 insert_mem_bar(Op_MemBarCPUOrder); | |
2840 return true; | |
2841 } | |
2842 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2843 //----------------------------inline_unsafe_allocate--------------------------- |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2844 // public native Object sun.mics.Unsafe.allocateInstance(Class<?> cls); |
0 | 2845 bool LibraryCallKit::inline_unsafe_allocate() { |
2846 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
|
2847 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2848 null_check_receiver(); // null-check, then ignore |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2849 Node* cls = null_check(argument(1)); |
0 | 2850 if (stopped()) return true; |
2851 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2852 Node* kls = load_klass_from_mirror(cls, false, NULL, 0); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2853 kls = null_check(kls); |
0 | 2854 if (stopped()) return true; // argument was like int.class |
2855 | |
2856 // Note: The argument might still be an illegal value like | |
2857 // Serializable.class or Object[].class. The runtime will handle it. | |
2858 // But we must make an explicit check for initialization. | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
2859 Node* insp = basic_plus_adr(kls, in_bytes(InstanceKlass::init_state_offset())); |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
2860 // Use T_BOOLEAN for InstanceKlass::_init_state so the compiler |
4739
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
coleenp
parents:
3961
diff
changeset
|
2861 // can generate code to load it as unsigned byte. |
52b5d32fbfaf
7117052: instanceKlass::_init_state can be u1 type
coleenp
parents:
3961
diff
changeset
|
2862 Node* inst = make_load(NULL, insp, TypeInt::UBYTE, T_BOOLEAN); |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
2863 Node* bits = intcon(InstanceKlass::fully_initialized); |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2864 Node* test = _gvn.transform(new (C) SubINode(inst, bits)); |
0 | 2865 // The 'test' is non-zero if we need to take a slow path. |
2866 | |
2867 Node* obj = new_instance(kls, test); | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2868 set_result(obj); |
0 | 2869 return true; |
2870 } | |
2871 | |
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
5934
diff
changeset
|
2872 #ifdef TRACE_HAVE_INTRINSICS |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
5934
diff
changeset
|
2873 /* |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
5934
diff
changeset
|
2874 * oop -> myklass |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
5934
diff
changeset
|
2875 * myklass->trace_id |= USED |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
5934
diff
changeset
|
2876 * return myklass->trace_id & ~0x3 |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
5934
diff
changeset
|
2877 */ |
0105f367a14c
7160570: Intrinsification support for tracing framework
rbackman
parents:
5934
diff
changeset
|
2878 bool LibraryCallKit::inline_native_classID() { |
7194
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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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|
2879 null_check_receiver(); // null-check, then ignore |
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2880 Node* cls = null_check(argument(1), T_OBJECT); |
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2881 Node* kls = load_klass_from_mirror(cls, false, NULL, 0); |
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2882 kls = null_check(kls, T_OBJECT); |
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2883 ByteSize offset = TRACE_ID_OFFSET; |
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2884 Node* insp = basic_plus_adr(kls, in_bytes(offset)); |
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2885 Node* tvalue = make_load(NULL, insp, TypeLong::LONG, T_LONG); |
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2886 Node* bits = longcon(~0x03l); // ignore bit 0 & 1 |
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2887 Node* andl = _gvn.transform(new (C) AndLNode(tvalue, bits)); |
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2888 Node* clsused = longcon(0x01l); // set the class bit |
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2889 Node* orl = _gvn.transform(new (C) OrLNode(tvalue, clsused)); |
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2890 |
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2891 const TypePtr *adr_type = _gvn.type(insp)->isa_ptr(); |
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2892 store_to_memory(control(), insp, orl, T_LONG, adr_type); |
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2893 set_result(andl); |
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2894 return true; |
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|
2895 } |
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2896 |
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2897 bool LibraryCallKit::inline_native_threadID() { |
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2898 Node* tls_ptr = NULL; |
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2899 Node* cur_thr = generate_current_thread(tls_ptr); |
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2900 Node* p = basic_plus_adr(top()/*!oop*/, tls_ptr, in_bytes(JavaThread::osthread_offset())); |
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2901 Node* osthread = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS); |
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2902 p = basic_plus_adr(top()/*!oop*/, osthread, in_bytes(OSThread::thread_id_offset())); |
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2903 |
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2904 Node* threadid = NULL; |
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2905 size_t thread_id_size = OSThread::thread_id_size(); |
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2906 if (thread_id_size == (size_t) BytesPerLong) { |
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2907 threadid = ConvL2I(make_load(control(), p, TypeLong::LONG, T_LONG)); |
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2908 } else if (thread_id_size == (size_t) BytesPerInt) { |
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2909 threadid = make_load(control(), p, TypeInt::INT, T_INT); |
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2910 } else { |
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2911 ShouldNotReachHere(); |
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|
2912 } |
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2913 set_result(threadid); |
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2914 return true; |
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|
2915 } |
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2916 #endif |
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2917 |
0 | 2918 //------------------------inline_native_time_funcs-------------- |
2919 // inline code for System.currentTimeMillis() and System.nanoTime() | |
2920 // these have the same type and signature | |
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2921 bool LibraryCallKit::inline_native_time_funcs(address funcAddr, const char* funcName) { |
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2922 const TypeFunc* tf = OptoRuntime::void_long_Type(); |
0 | 2923 const TypePtr* no_memory_effects = NULL; |
2924 Node* time = make_runtime_call(RC_LEAF, tf, funcAddr, funcName, no_memory_effects); | |
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2925 Node* value = _gvn.transform(new (C) ProjNode(time, TypeFunc::Parms+0)); |
0 | 2926 #ifdef ASSERT |
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2927 Node* value_top = _gvn.transform(new (C) ProjNode(time, TypeFunc::Parms+1)); |
0 | 2928 assert(value_top == top(), "second value must be top"); |
2929 #endif | |
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2930 set_result(value); |
0 | 2931 return true; |
2932 } | |
2933 | |
2934 //------------------------inline_native_currentThread------------------ | |
2935 bool LibraryCallKit::inline_native_currentThread() { | |
2936 Node* junk = NULL; | |
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2937 set_result(generate_current_thread(junk)); |
0 | 2938 return true; |
2939 } | |
2940 | |
2941 //------------------------inline_native_isInterrupted------------------ | |
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2942 // private native boolean java.lang.Thread.isInterrupted(boolean ClearInterrupted); |
0 | 2943 bool LibraryCallKit::inline_native_isInterrupted() { |
2944 // Add a fast path to t.isInterrupted(clear_int): | |
2945 // (t == Thread.current() && (!TLS._osthread._interrupted || !clear_int)) | |
2946 // ? TLS._osthread._interrupted : /*slow path:*/ t.isInterrupted(clear_int) | |
2947 // So, in the common case that the interrupt bit is false, | |
2948 // we avoid making a call into the VM. Even if the interrupt bit | |
2949 // is true, if the clear_int argument is false, we avoid the VM call. | |
2950 // However, if the receiver is not currentThread, we must call the VM, | |
2951 // because there must be some locking done around the operation. | |
2952 | |
2953 // We only go to the fast case code if we pass two guards. | |
2954 // Paths which do not pass are accumulated in the slow_region. | |
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2955 |
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2956 enum { |
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2957 no_int_result_path = 1, // t == Thread.current() && !TLS._osthread._interrupted |
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2958 no_clear_result_path = 2, // t == Thread.current() && TLS._osthread._interrupted && !clear_int |
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2959 slow_result_path = 3, // slow path: t.isInterrupted(clear_int) |
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2960 PATH_LIMIT |
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2961 }; |
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2962 |
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2963 // Ensure that it's not possible to move the load of TLS._osthread._interrupted flag |
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2964 // out of the function. |
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2965 insert_mem_bar(Op_MemBarCPUOrder); |
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2966 |
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2967 RegionNode* result_rgn = new (C) RegionNode(PATH_LIMIT); |
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2968 PhiNode* result_val = new (C) PhiNode(result_rgn, TypeInt::BOOL); |
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2969 |
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2970 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 2971 record_for_igvn(slow_region); |
2972 | |
2973 // (a) Receiving thread must be the current thread. | |
2974 Node* rec_thr = argument(0); | |
2975 Node* tls_ptr = NULL; | |
2976 Node* cur_thr = generate_current_thread(tls_ptr); | |
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2977 Node* cmp_thr = _gvn.transform( new (C) CmpPNode(cur_thr, rec_thr) ); |
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2978 Node* bol_thr = _gvn.transform( new (C) BoolNode(cmp_thr, BoolTest::ne) ); |
0 | 2979 |
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2980 generate_slow_guard(bol_thr, slow_region); |
0 | 2981 |
2982 // (b) Interrupt bit on TLS must be false. | |
2983 Node* p = basic_plus_adr(top()/*!oop*/, tls_ptr, in_bytes(JavaThread::osthread_offset())); | |
2984 Node* osthread = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS); | |
2985 p = basic_plus_adr(top()/*!oop*/, osthread, in_bytes(OSThread::interrupted_offset())); | |
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2986 |
787
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2987 // Set the control input on the field _interrupted read to prevent it floating up. |
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2988 Node* int_bit = make_load(control(), p, TypeInt::BOOL, T_INT); |
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2989 Node* cmp_bit = _gvn.transform( new (C) CmpINode(int_bit, intcon(0)) ); |
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2990 Node* bol_bit = _gvn.transform( new (C) BoolNode(cmp_bit, BoolTest::ne) ); |
0 | 2991 |
2992 IfNode* iff_bit = create_and_map_if(control(), bol_bit, PROB_UNLIKELY_MAG(3), COUNT_UNKNOWN); | |
2993 | |
2994 // First fast path: if (!TLS._interrupted) return false; | |
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2995 Node* false_bit = _gvn.transform( new (C) IfFalseNode(iff_bit) ); |
0 | 2996 result_rgn->init_req(no_int_result_path, false_bit); |
2997 result_val->init_req(no_int_result_path, intcon(0)); | |
2998 | |
2999 // drop through to next case | |
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3000 set_control( _gvn.transform(new (C) IfTrueNode(iff_bit)) ); |
0 | 3001 |
3002 // (c) Or, if interrupt bit is set and clear_int is false, use 2nd fast path. | |
3003 Node* clr_arg = argument(1); | |
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3004 Node* cmp_arg = _gvn.transform( new (C) CmpINode(clr_arg, intcon(0)) ); |
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3005 Node* bol_arg = _gvn.transform( new (C) BoolNode(cmp_arg, BoolTest::ne) ); |
0 | 3006 IfNode* iff_arg = create_and_map_if(control(), bol_arg, PROB_FAIR, COUNT_UNKNOWN); |
3007 | |
3008 // Second fast path: ... else if (!clear_int) return true; | |
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3009 Node* false_arg = _gvn.transform( new (C) IfFalseNode(iff_arg) ); |
0 | 3010 result_rgn->init_req(no_clear_result_path, false_arg); |
3011 result_val->init_req(no_clear_result_path, intcon(1)); | |
3012 | |
3013 // drop through to next case | |
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3014 set_control( _gvn.transform(new (C) IfTrueNode(iff_arg)) ); |
0 | 3015 |
3016 // (d) Otherwise, go to the slow path. | |
3017 slow_region->add_req(control()); | |
3018 set_control( _gvn.transform(slow_region) ); | |
3019 | |
3020 if (stopped()) { | |
3021 // There is no slow path. | |
3022 result_rgn->init_req(slow_result_path, top()); | |
3023 result_val->init_req(slow_result_path, top()); | |
3024 } else { | |
3025 // non-virtual because it is a private non-static | |
3026 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_isInterrupted); | |
3027 | |
3028 Node* slow_val = set_results_for_java_call(slow_call); | |
3029 // this->control() comes from set_results_for_java_call | |
3030 | |
3031 Node* fast_io = slow_call->in(TypeFunc::I_O); | |
3032 Node* fast_mem = slow_call->in(TypeFunc::Memory); | |
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3033 |
0 | 3034 // These two phis are pre-filled with copies of of the fast IO and Memory |
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3035 PhiNode* result_mem = PhiNode::make(result_rgn, fast_mem, Type::MEMORY, TypePtr::BOTTOM); |
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3036 PhiNode* result_io = PhiNode::make(result_rgn, fast_io, Type::ABIO); |
0 | 3037 |
3038 result_rgn->init_req(slow_result_path, control()); | |
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3039 result_io ->init_req(slow_result_path, i_o()); |
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3040 result_mem->init_req(slow_result_path, reset_memory()); |
0 | 3041 result_val->init_req(slow_result_path, slow_val); |
3042 | |
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3043 set_all_memory(_gvn.transform(result_mem)); |
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3044 set_i_o( _gvn.transform(result_io)); |
0 | 3045 } |
3046 | |
3047 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
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3048 set_result(result_rgn, result_val); |
0 | 3049 return true; |
3050 } | |
3051 | |
3052 //---------------------------load_mirror_from_klass---------------------------- | |
3053 // Given a klass oop, load its java mirror (a java.lang.Class oop). | |
3054 Node* LibraryCallKit::load_mirror_from_klass(Node* klass) { | |
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3055 Node* p = basic_plus_adr(klass, in_bytes(Klass::java_mirror_offset())); |
0 | 3056 return make_load(NULL, p, TypeInstPtr::MIRROR, T_OBJECT); |
3057 } | |
3058 | |
3059 //-----------------------load_klass_from_mirror_common------------------------- | |
3060 // Given a java mirror (a java.lang.Class oop), load its corresponding klass oop. | |
3061 // Test the klass oop for null (signifying a primitive Class like Integer.TYPE), | |
3062 // and branch to the given path on the region. | |
3063 // If never_see_null, take an uncommon trap on null, so we can optimistically | |
3064 // compile for the non-null case. | |
3065 // If the region is NULL, force never_see_null = true. | |
3066 Node* LibraryCallKit::load_klass_from_mirror_common(Node* mirror, | |
3067 bool never_see_null, | |
3068 RegionNode* region, | |
3069 int null_path, | |
3070 int offset) { | |
3071 if (region == NULL) never_see_null = true; | |
3072 Node* p = basic_plus_adr(mirror, offset); | |
3073 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; | |
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3074 Node* kls = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, kls_type) ); |
0 | 3075 Node* null_ctl = top(); |
3076 kls = null_check_oop(kls, &null_ctl, never_see_null); | |
3077 if (region != NULL) { | |
3078 // Set region->in(null_path) if the mirror is a primitive (e.g, int.class). | |
3079 region->init_req(null_path, null_ctl); | |
3080 } else { | |
3081 assert(null_ctl == top(), "no loose ends"); | |
3082 } | |
3083 return kls; | |
3084 } | |
3085 | |
3086 //--------------------(inline_native_Class_query helpers)--------------------- | |
3087 // Use this for JVM_ACC_INTERFACE, JVM_ACC_IS_CLONEABLE, JVM_ACC_HAS_FINALIZER. | |
3088 // Fall through if (mods & mask) == bits, take the guard otherwise. | |
3089 Node* LibraryCallKit::generate_access_flags_guard(Node* kls, int modifier_mask, int modifier_bits, RegionNode* region) { | |
3090 // Branch around if the given klass has the given modifier bit set. | |
3091 // Like generate_guard, adds a new path onto the region. | |
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|
3092 Node* modp = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); |
0 | 3093 Node* mods = make_load(NULL, modp, TypeInt::INT, T_INT); |
3094 Node* mask = intcon(modifier_mask); | |
3095 Node* bits = intcon(modifier_bits); | |
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3096 Node* mbit = _gvn.transform( new (C) AndINode(mods, mask) ); |
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3097 Node* cmp = _gvn.transform( new (C) CmpINode(mbit, bits) ); |
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3098 Node* bol = _gvn.transform( new (C) BoolNode(cmp, BoolTest::ne) ); |
0 | 3099 return generate_fair_guard(bol, region); |
3100 } | |
3101 Node* LibraryCallKit::generate_interface_guard(Node* kls, RegionNode* region) { | |
3102 return generate_access_flags_guard(kls, JVM_ACC_INTERFACE, 0, region); | |
3103 } | |
3104 | |
3105 //-------------------------inline_native_Class_query------------------- | |
3106 bool LibraryCallKit::inline_native_Class_query(vmIntrinsics::ID id) { | |
3107 const Type* return_type = TypeInt::BOOL; | |
3108 Node* prim_return_value = top(); // what happens if it's a primitive class? | |
3109 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3110 bool expect_prim = false; // most of these guys expect to work on refs | |
3111 | |
3112 enum { _normal_path = 1, _prim_path = 2, PATH_LIMIT }; | |
3113 | |
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3114 Node* mirror = argument(0); |
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3115 Node* obj = top(); |
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3116 |
0 | 3117 switch (id) { |
3118 case vmIntrinsics::_isInstance: | |
3119 // nothing is an instance of a primitive type | |
3120 prim_return_value = intcon(0); | |
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3121 obj = argument(1); |
0 | 3122 break; |
3123 case vmIntrinsics::_getModifiers: | |
3124 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
3125 assert(is_power_of_2((int)JVM_ACC_WRITTEN_FLAGS+1), "change next line"); | |
3126 return_type = TypeInt::make(0, JVM_ACC_WRITTEN_FLAGS, Type::WidenMin); | |
3127 break; | |
3128 case vmIntrinsics::_isInterface: | |
3129 prim_return_value = intcon(0); | |
3130 break; | |
3131 case vmIntrinsics::_isArray: | |
3132 prim_return_value = intcon(0); | |
3133 expect_prim = true; // cf. ObjectStreamClass.getClassSignature | |
3134 break; | |
3135 case vmIntrinsics::_isPrimitive: | |
3136 prim_return_value = intcon(1); | |
3137 expect_prim = true; // obviously | |
3138 break; | |
3139 case vmIntrinsics::_getSuperclass: | |
3140 prim_return_value = null(); | |
3141 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); | |
3142 break; | |
3143 case vmIntrinsics::_getComponentType: | |
3144 prim_return_value = null(); | |
3145 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); | |
3146 break; | |
3147 case vmIntrinsics::_getClassAccessFlags: | |
3148 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
3149 return_type = TypeInt::INT; // not bool! 6297094 | |
3150 break; | |
3151 default: | |
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3152 fatal_unexpected_iid(id); |
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3153 break; |
0 | 3154 } |
3155 | |
3156 const TypeInstPtr* mirror_con = _gvn.type(mirror)->isa_instptr(); | |
3157 if (mirror_con == NULL) return false; // cannot happen? | |
3158 | |
3159 #ifndef PRODUCT | |
3160 if (PrintIntrinsics || PrintInlining || PrintOptoInlining) { | |
3161 ciType* k = mirror_con->java_mirror_type(); | |
3162 if (k) { | |
3163 tty->print("Inlining %s on constant Class ", vmIntrinsics::name_at(intrinsic_id())); | |
3164 k->print_name(); | |
3165 tty->cr(); | |
3166 } | |
3167 } | |
3168 #endif | |
3169 | |
3170 // Null-check the mirror, and the mirror's klass ptr (in case it is a primitive). | |
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3171 RegionNode* region = new (C) RegionNode(PATH_LIMIT); |
0 | 3172 record_for_igvn(region); |
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3173 PhiNode* phi = new (C) PhiNode(region, return_type); |
0 | 3174 |
3175 // The mirror will never be null of Reflection.getClassAccessFlags, however | |
3176 // it may be null for Class.isInstance or Class.getModifiers. Throw a NPE | |
3177 // if it is. See bug 4774291. | |
3178 | |
3179 // For Reflection.getClassAccessFlags(), the null check occurs in | |
3180 // the wrong place; see inline_unsafe_access(), above, for a similar | |
3181 // situation. | |
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3182 mirror = null_check(mirror); |
0 | 3183 // If mirror or obj is dead, only null-path is taken. |
3184 if (stopped()) return true; | |
3185 | |
3186 if (expect_prim) never_see_null = false; // expect nulls (meaning prims) | |
3187 | |
3188 // Now load the mirror's klass metaobject, and null-check it. | |
3189 // Side-effects region with the control path if the klass is null. | |
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3190 Node* kls = load_klass_from_mirror(mirror, never_see_null, region, _prim_path); |
0 | 3191 // If kls is null, we have a primitive mirror. |
3192 phi->init_req(_prim_path, prim_return_value); | |
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3193 if (stopped()) { set_result(region, phi); return true; } |
0 | 3194 |
3195 Node* p; // handy temp | |
3196 Node* null_ctl; | |
3197 | |
3198 // Now that we have the non-null klass, we can perform the real query. | |
3199 // For constant classes, the query will constant-fold in LoadNode::Value. | |
3200 Node* query_value = top(); | |
3201 switch (id) { | |
3202 case vmIntrinsics::_isInstance: | |
3203 // nothing is an instance of a primitive type | |
3204 query_value = gen_instanceof(obj, kls); | |
3205 break; | |
3206 | |
3207 case vmIntrinsics::_getModifiers: | |
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3208 p = basic_plus_adr(kls, in_bytes(Klass::modifier_flags_offset())); |
0 | 3209 query_value = make_load(NULL, p, TypeInt::INT, T_INT); |
3210 break; | |
3211 | |
3212 case vmIntrinsics::_isInterface: | |
3213 // (To verify this code sequence, check the asserts in JVM_IsInterface.) | |
3214 if (generate_interface_guard(kls, region) != NULL) | |
3215 // A guard was added. If the guard is taken, it was an interface. | |
3216 phi->add_req(intcon(1)); | |
3217 // If we fall through, it's a plain class. | |
3218 query_value = intcon(0); | |
3219 break; | |
3220 | |
3221 case vmIntrinsics::_isArray: | |
3222 // (To verify this code sequence, check the asserts in JVM_IsArrayClass.) | |
3223 if (generate_array_guard(kls, region) != NULL) | |
3224 // A guard was added. If the guard is taken, it was an array. | |
3225 phi->add_req(intcon(1)); | |
3226 // If we fall through, it's a plain class. | |
3227 query_value = intcon(0); | |
3228 break; | |
3229 | |
3230 case vmIntrinsics::_isPrimitive: | |
3231 query_value = intcon(0); // "normal" path produces false | |
3232 break; | |
3233 | |
3234 case vmIntrinsics::_getSuperclass: | |
3235 // The rules here are somewhat unfortunate, but we can still do better | |
3236 // with random logic than with a JNI call. | |
3237 // Interfaces store null or Object as _super, but must report null. | |
3238 // Arrays store an intermediate super as _super, but must report Object. | |
3239 // Other types can report the actual _super. | |
3240 // (To verify this code sequence, check the asserts in JVM_IsInterface.) | |
3241 if (generate_interface_guard(kls, region) != NULL) | |
3242 // A guard was added. If the guard is taken, it was an interface. | |
3243 phi->add_req(null()); | |
3244 if (generate_array_guard(kls, region) != NULL) | |
3245 // A guard was added. If the guard is taken, it was an array. | |
3246 phi->add_req(makecon(TypeInstPtr::make(env()->Object_klass()->java_mirror()))); | |
3247 // If we fall through, it's a plain class. Get its _super. | |
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3248 p = basic_plus_adr(kls, in_bytes(Klass::super_offset())); |
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3249 kls = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, TypeKlassPtr::OBJECT_OR_NULL) ); |
0 | 3250 null_ctl = top(); |
3251 kls = null_check_oop(kls, &null_ctl); | |
3252 if (null_ctl != top()) { | |
3253 // If the guard is taken, Object.superClass is null (both klass and mirror). | |
3254 region->add_req(null_ctl); | |
3255 phi ->add_req(null()); | |
3256 } | |
3257 if (!stopped()) { | |
3258 query_value = load_mirror_from_klass(kls); | |
3259 } | |
3260 break; | |
3261 | |
3262 case vmIntrinsics::_getComponentType: | |
3263 if (generate_array_guard(kls, region) != NULL) { | |
3264 // Be sure to pin the oop load to the guard edge just created: | |
3265 Node* is_array_ctrl = region->in(region->req()-1); | |
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8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
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diff
changeset
|
3266 Node* cma = basic_plus_adr(kls, in_bytes(ArrayKlass::component_mirror_offset())); |
0 | 3267 Node* cmo = make_load(is_array_ctrl, cma, TypeInstPtr::MIRROR, T_OBJECT); |
3268 phi->add_req(cmo); | |
3269 } | |
3270 query_value = null(); // non-array case is null | |
3271 break; | |
3272 | |
3273 case vmIntrinsics::_getClassAccessFlags: | |
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changeset
|
3274 p = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); |
0 | 3275 query_value = make_load(NULL, p, TypeInt::INT, T_INT); |
3276 break; | |
3277 | |
3278 default: | |
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3279 fatal_unexpected_iid(id); |
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|
3280 break; |
0 | 3281 } |
3282 | |
3283 // Fall-through is the normal case of a query to a real class. | |
3284 phi->init_req(1, query_value); | |
3285 region->init_req(1, control()); | |
3286 | |
3287 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
7194
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3288 set_result(region, phi); |
0 | 3289 return true; |
3290 } | |
3291 | |
3292 //--------------------------inline_native_subtype_check------------------------ | |
3293 // This intrinsic takes the JNI calls out of the heart of | |
3294 // UnsafeFieldAccessorImpl.set, which improves Field.set, readObject, etc. | |
3295 bool LibraryCallKit::inline_native_subtype_check() { | |
3296 // Pull both arguments off the stack. | |
3297 Node* args[2]; // two java.lang.Class mirrors: superc, subc | |
3298 args[0] = argument(0); | |
3299 args[1] = argument(1); | |
3300 Node* klasses[2]; // corresponding Klasses: superk, subk | |
3301 klasses[0] = klasses[1] = top(); | |
3302 | |
3303 enum { | |
3304 // A full decision tree on {superc is prim, subc is prim}: | |
3305 _prim_0_path = 1, // {P,N} => false | |
3306 // {P,P} & superc!=subc => false | |
3307 _prim_same_path, // {P,P} & superc==subc => true | |
3308 _prim_1_path, // {N,P} => false | |
3309 _ref_subtype_path, // {N,N} & subtype check wins => true | |
3310 _both_ref_path, // {N,N} & subtype check loses => false | |
3311 PATH_LIMIT | |
3312 }; | |
3313 | |
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3314 RegionNode* region = new (C) RegionNode(PATH_LIMIT); |
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3315 Node* phi = new (C) PhiNode(region, TypeInt::BOOL); |
0 | 3316 record_for_igvn(region); |
3317 | |
3318 const TypePtr* adr_type = TypeRawPtr::BOTTOM; // memory type of loads | |
3319 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; | |
3320 int class_klass_offset = java_lang_Class::klass_offset_in_bytes(); | |
3321 | |
3322 // First null-check both mirrors and load each mirror's klass metaobject. | |
3323 int which_arg; | |
3324 for (which_arg = 0; which_arg <= 1; which_arg++) { | |
3325 Node* arg = args[which_arg]; | |
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3326 arg = null_check(arg); |
0 | 3327 if (stopped()) break; |
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3328 args[which_arg] = arg; |
0 | 3329 |
3330 Node* p = basic_plus_adr(arg, class_klass_offset); | |
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3331 Node* kls = LoadKlassNode::make(_gvn, immutable_memory(), p, adr_type, kls_type); |
0 | 3332 klasses[which_arg] = _gvn.transform(kls); |
3333 } | |
3334 | |
3335 // Having loaded both klasses, test each for null. | |
3336 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3337 for (which_arg = 0; which_arg <= 1; which_arg++) { | |
3338 Node* kls = klasses[which_arg]; | |
3339 Node* null_ctl = top(); | |
3340 kls = null_check_oop(kls, &null_ctl, never_see_null); | |
3341 int prim_path = (which_arg == 0 ? _prim_0_path : _prim_1_path); | |
3342 region->init_req(prim_path, null_ctl); | |
3343 if (stopped()) break; | |
3344 klasses[which_arg] = kls; | |
3345 } | |
3346 | |
3347 if (!stopped()) { | |
3348 // now we have two reference types, in klasses[0..1] | |
3349 Node* subk = klasses[1]; // the argument to isAssignableFrom | |
3350 Node* superk = klasses[0]; // the receiver | |
3351 region->set_req(_both_ref_path, gen_subtype_check(subk, superk)); | |
3352 // now we have a successful reference subtype check | |
3353 region->set_req(_ref_subtype_path, control()); | |
3354 } | |
3355 | |
3356 // If both operands are primitive (both klasses null), then | |
3357 // we must return true when they are identical primitives. | |
3358 // It is convenient to test this after the first null klass check. | |
3359 set_control(region->in(_prim_0_path)); // go back to first null check | |
3360 if (!stopped()) { | |
3361 // Since superc is primitive, make a guard for the superc==subc case. | |
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|
3362 Node* cmp_eq = _gvn.transform( new (C) CmpPNode(args[0], args[1]) ); |
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|
3363 Node* bol_eq = _gvn.transform( new (C) BoolNode(cmp_eq, BoolTest::eq) ); |
0 | 3364 generate_guard(bol_eq, region, PROB_FAIR); |
3365 if (region->req() == PATH_LIMIT+1) { | |
3366 // A guard was added. If the added guard is taken, superc==subc. | |
3367 region->swap_edges(PATH_LIMIT, _prim_same_path); | |
3368 region->del_req(PATH_LIMIT); | |
3369 } | |
3370 region->set_req(_prim_0_path, control()); // Not equal after all. | |
3371 } | |
3372 | |
3373 // these are the only paths that produce 'true': | |
3374 phi->set_req(_prim_same_path, intcon(1)); | |
3375 phi->set_req(_ref_subtype_path, intcon(1)); | |
3376 | |
3377 // pull together the cases: | |
3378 assert(region->req() == PATH_LIMIT, "sane region"); | |
3379 for (uint i = 1; i < region->req(); i++) { | |
3380 Node* ctl = region->in(i); | |
3381 if (ctl == NULL || ctl == top()) { | |
3382 region->set_req(i, top()); | |
3383 phi ->set_req(i, top()); | |
3384 } else if (phi->in(i) == NULL) { | |
3385 phi->set_req(i, intcon(0)); // all other paths produce 'false' | |
3386 } | |
3387 } | |
3388 | |
3389 set_control(_gvn.transform(region)); | |
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changeset
|
3390 set_result(_gvn.transform(phi)); |
0 | 3391 return true; |
3392 } | |
3393 | |
3394 //---------------------generate_array_guard_common------------------------ | |
3395 Node* LibraryCallKit::generate_array_guard_common(Node* kls, RegionNode* region, | |
3396 bool obj_array, bool not_array) { | |
3397 // If obj_array/non_array==false/false: | |
3398 // Branch around if the given klass is in fact an array (either obj or prim). | |
3399 // If obj_array/non_array==false/true: | |
3400 // Branch around if the given klass is not an array klass of any kind. | |
3401 // If obj_array/non_array==true/true: | |
3402 // Branch around if the kls is not an oop array (kls is int[], String, etc.) | |
3403 // If obj_array/non_array==true/false: | |
3404 // Branch around if the kls is an oop array (Object[] or subtype) | |
3405 // | |
3406 // Like generate_guard, adds a new path onto the region. | |
3407 jint layout_con = 0; | |
3408 Node* layout_val = get_layout_helper(kls, layout_con); | |
3409 if (layout_val == NULL) { | |
3410 bool query = (obj_array | |
3411 ? Klass::layout_helper_is_objArray(layout_con) | |
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3412 : Klass::layout_helper_is_array(layout_con)); |
0 | 3413 if (query == not_array) { |
3414 return NULL; // never a branch | |
3415 } else { // always a branch | |
3416 Node* always_branch = control(); | |
3417 if (region != NULL) | |
3418 region->add_req(always_branch); | |
3419 set_control(top()); | |
3420 return always_branch; | |
3421 } | |
3422 } | |
3423 // Now test the correct condition. | |
3424 jint nval = (obj_array | |
3425 ? ((jint)Klass::_lh_array_tag_type_value | |
3426 << Klass::_lh_array_tag_shift) | |
3427 : Klass::_lh_neutral_value); | |
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3428 Node* cmp = _gvn.transform( new(C) CmpINode(layout_val, intcon(nval)) ); |
0 | 3429 BoolTest::mask btest = BoolTest::lt; // correct for testing is_[obj]array |
3430 // invert the test if we are looking for a non-array | |
3431 if (not_array) btest = BoolTest(btest).negate(); | |
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3432 Node* bol = _gvn.transform( new(C) BoolNode(cmp, btest) ); |
0 | 3433 return generate_fair_guard(bol, region); |
3434 } | |
3435 | |
3436 | |
3437 //-----------------------inline_native_newArray-------------------------- | |
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3438 // private static native Object java.lang.reflect.newArray(Class<?> componentType, int length); |
0 | 3439 bool LibraryCallKit::inline_native_newArray() { |
3440 Node* mirror = argument(0); | |
3441 Node* count_val = argument(1); | |
3442 | |
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3443 mirror = null_check(mirror); |
163 | 3444 // If mirror or obj is dead, only null-path is taken. |
3445 if (stopped()) return true; | |
0 | 3446 |
3447 enum { _normal_path = 1, _slow_path = 2, PATH_LIMIT }; | |
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3448 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
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3449 PhiNode* result_val = new(C) PhiNode(result_reg, |
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3450 TypeInstPtr::NOTNULL); |
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|
3451 PhiNode* result_io = new(C) PhiNode(result_reg, Type::ABIO); |
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3452 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
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3453 TypePtr::BOTTOM); |
0 | 3454 |
3455 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3456 Node* klass_node = load_array_klass_from_mirror(mirror, never_see_null, | |
3457 result_reg, _slow_path); | |
3458 Node* normal_ctl = control(); | |
3459 Node* no_array_ctl = result_reg->in(_slow_path); | |
3460 | |
3461 // Generate code for the slow case. We make a call to newArray(). | |
3462 set_control(no_array_ctl); | |
3463 if (!stopped()) { | |
3464 // Either the input type is void.class, or else the | |
3465 // array klass has not yet been cached. Either the | |
3466 // ensuing call will throw an exception, or else it | |
3467 // will cache the array klass for next time. | |
3468 PreserveJVMState pjvms(this); | |
3469 CallJavaNode* slow_call = generate_method_call_static(vmIntrinsics::_newArray); | |
3470 Node* slow_result = set_results_for_java_call(slow_call); | |
3471 // this->control() comes from set_results_for_java_call | |
3472 result_reg->set_req(_slow_path, control()); | |
3473 result_val->set_req(_slow_path, slow_result); | |
3474 result_io ->set_req(_slow_path, i_o()); | |
3475 result_mem->set_req(_slow_path, reset_memory()); | |
3476 } | |
3477 | |
3478 set_control(normal_ctl); | |
3479 if (!stopped()) { | |
3480 // Normal case: The array type has been cached in the java.lang.Class. | |
3481 // The following call works fine even if the array type is polymorphic. | |
3482 // It could be a dynamic mix of int[], boolean[], Object[], etc. | |
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3483 Node* obj = new_array(klass_node, count_val, 0); // no arguments to push |
0 | 3484 result_reg->init_req(_normal_path, control()); |
3485 result_val->init_req(_normal_path, obj); | |
3486 result_io ->init_req(_normal_path, i_o()); | |
3487 result_mem->init_req(_normal_path, reset_memory()); | |
3488 } | |
3489 | |
3490 // Return the combined state. | |
3491 set_i_o( _gvn.transform(result_io) ); | |
3492 set_all_memory( _gvn.transform(result_mem) ); | |
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3493 |
0 | 3494 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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3495 set_result(result_reg, result_val); |
0 | 3496 return true; |
3497 } | |
3498 | |
3499 //----------------------inline_native_getLength-------------------------- | |
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3500 // public static native int java.lang.reflect.Array.getLength(Object array); |
0 | 3501 bool LibraryCallKit::inline_native_getLength() { |
3502 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; | |
3503 | |
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3504 Node* array = null_check(argument(0)); |
0 | 3505 // If array is dead, only null-path is taken. |
3506 if (stopped()) return true; | |
3507 | |
3508 // Deoptimize if it is a non-array. | |
3509 Node* non_array = generate_non_array_guard(load_object_klass(array), NULL); | |
3510 | |
3511 if (non_array != NULL) { | |
3512 PreserveJVMState pjvms(this); | |
3513 set_control(non_array); | |
3514 uncommon_trap(Deoptimization::Reason_intrinsic, | |
3515 Deoptimization::Action_maybe_recompile); | |
3516 } | |
3517 | |
3518 // If control is dead, only non-array-path is taken. | |
3519 if (stopped()) return true; | |
3520 | |
3521 // The works fine even if the array type is polymorphic. | |
3522 // It could be a dynamic mix of int[], boolean[], Object[], etc. | |
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3523 Node* result = load_array_length(array); |
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3524 |
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3525 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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3526 set_result(result); |
0 | 3527 return true; |
3528 } | |
3529 | |
3530 //------------------------inline_array_copyOf---------------------------- | |
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3531 // public static <T,U> T[] java.util.Arrays.copyOf( U[] original, int newLength, Class<? extends T[]> newType); |
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3532 // public static <T,U> T[] java.util.Arrays.copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType); |
0 | 3533 bool LibraryCallKit::inline_array_copyOf(bool is_copyOfRange) { |
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3534 return false; |
0 | 3535 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; |
3536 | |
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3537 // Get the arguments. |
0 | 3538 Node* original = argument(0); |
3539 Node* start = is_copyOfRange? argument(1): intcon(0); | |
3540 Node* end = is_copyOfRange? argument(2): argument(1); | |
3541 Node* array_type_mirror = is_copyOfRange? argument(3): argument(2); | |
3542 | |
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|
3543 Node* newcopy; |
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|
3544 |
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|
3545 // Set the original stack and the reexecute bit for the interpreter to reexecute |
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3546 // the bytecode that invokes Arrays.copyOf if deoptimization happens. |
902
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|
3547 { PreserveReexecuteState preexecs(this); |
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3548 jvms()->set_should_reexecute(true); |
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|
3549 |
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3550 array_type_mirror = null_check(array_type_mirror); |
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3551 original = null_check(original); |
902
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|
3552 |
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|
3553 // Check if a null path was taken unconditionally. |
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|
3554 if (stopped()) return true; |
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|
3555 |
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|
3556 Node* orig_length = load_array_length(original); |
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|
3557 |
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|
3558 Node* klass_node = load_klass_from_mirror(array_type_mirror, false, NULL, 0); |
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3559 klass_node = null_check(klass_node); |
902
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|
3560 |
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|
3561 RegionNode* bailout = new (C) RegionNode(1); |
902
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|
3562 record_for_igvn(bailout); |
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changeset
|
3563 |
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diff
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|
3564 // Despite the generic type of Arrays.copyOf, the mirror might be int, int[], etc. |
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diff
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|
3565 // Bail out if that is so. |
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diff
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|
3566 Node* not_objArray = generate_non_objArray_guard(klass_node, bailout); |
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cfang
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diff
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|
3567 if (not_objArray != NULL) { |
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diff
changeset
|
3568 // Improve the klass node's type from the new optimistic assumption: |
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diff
changeset
|
3569 ciKlass* ak = ciArrayKlass::make(env()->Object_klass()); |
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diff
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|
3570 const Type* akls = TypeKlassPtr::make(TypePtr::NotNull, ak, 0/*offset*/); |
6804
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|
3571 Node* cast = new (C) CastPPNode(klass_node, akls); |
902
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6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
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900
diff
changeset
|
3572 cast->init_req(0, control()); |
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changeset
|
3573 klass_node = _gvn.transform(cast); |
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diff
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|
3574 } |
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|
3575 |
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|
3576 // Bail out if either start or end is negative. |
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|
3577 generate_negative_guard(start, bailout, &start); |
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changeset
|
3578 generate_negative_guard(end, bailout, &end); |
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|
3579 |
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diff
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|
3580 Node* length = end; |
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|
3581 if (_gvn.type(start) != TypeInt::ZERO) { |
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|
3582 length = _gvn.transform(new (C) SubINode(end, start)); |
902
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|
3583 } |
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|
3584 |
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diff
changeset
|
3585 // Bail out if length is negative. |
6180
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7174363: Arrays.copyOfRange leads to VM crash with -Xcomp -server if executed by testing framework
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diff
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|
3586 // Without this the new_array would throw |
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diff
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|
3587 // NegativeArraySizeException but IllegalArgumentException is what |
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diff
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|
3588 // should be thrown |
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diff
changeset
|
3589 generate_negative_guard(length, bailout, &length); |
902
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diff
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|
3590 |
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|
3591 if (bailout->req() > 1) { |
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|
3592 PreserveJVMState pjvms(this); |
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|
3593 set_control(_gvn.transform(bailout)); |
902
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|
3594 uncommon_trap(Deoptimization::Reason_intrinsic, |
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|
3595 Deoptimization::Action_maybe_recompile); |
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|
3596 } |
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|
3597 |
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|
3598 if (!stopped()) { |
900
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diff
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|
3599 // How many elements will we copy from the original? |
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|
3600 // The answer is MinI(orig_length - start, length). |
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|
3601 Node* orig_tail = _gvn.transform(new (C) SubINode(orig_length, start)); |
900
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|
3602 Node* moved = generate_min_max(vmIntrinsics::_min, orig_tail, length); |
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|
3603 |
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|
3604 newcopy = new_array(klass_node, length, 0); // no argments to push |
900
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|
3605 |
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changeset
|
3606 // Generate a direct call to the right arraycopy function(s). |
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|
3607 // We know the copy is disjoint but we might not know if the |
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changeset
|
3608 // oop stores need checking. |
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diff
changeset
|
3609 // Extreme case: Arrays.copyOf((Integer[])x, 10, String[].class). |
9987d9d5eb0e
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diff
changeset
|
3610 // This will fail a store-check if x contains any non-nulls. |
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|
3611 bool disjoint_bases = true; |
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3612 // if start > orig_length then the length of the copy may be |
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3613 // negative. |
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3614 bool length_never_negative = !is_copyOfRange; |
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3615 generate_arraycopy(TypeAryPtr::OOPS, T_OBJECT, |
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3616 original, start, newcopy, intcon(0), moved, |
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3617 disjoint_bases, length_never_negative); |
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3618 } |
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3619 } // original reexecute is set back here |
0 | 3620 |
3621 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
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3622 if (!stopped()) { |
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3623 set_result(newcopy); |
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3624 } |
0 | 3625 return true; |
3626 } | |
3627 | |
3628 | |
3629 //----------------------generate_virtual_guard--------------------------- | |
3630 // Helper for hashCode and clone. Peeks inside the vtable to avoid a call. | |
3631 Node* LibraryCallKit::generate_virtual_guard(Node* obj_klass, | |
3632 RegionNode* slow_region) { | |
3633 ciMethod* method = callee(); | |
3634 int vtable_index = method->vtable_index(); | |
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3635 // Get the Method* out of the appropriate vtable entry. |
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3636 int entry_offset = (InstanceKlass::vtable_start_offset() + |
0 | 3637 vtable_index*vtableEntry::size()) * wordSize + |
3638 vtableEntry::method_offset_in_bytes(); | |
3639 Node* entry_addr = basic_plus_adr(obj_klass, entry_offset); | |
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3640 Node* target_call = make_load(NULL, entry_addr, TypePtr::NOTNULL, T_ADDRESS); |
0 | 3641 |
3642 // Compare the target method with the expected method (e.g., Object.hashCode). | |
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3643 const TypePtr* native_call_addr = TypeMetadataPtr::make(method); |
0 | 3644 |
3645 Node* native_call = makecon(native_call_addr); | |
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3646 Node* chk_native = _gvn.transform( new(C) CmpPNode(target_call, native_call) ); |
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3647 Node* test_native = _gvn.transform( new(C) BoolNode(chk_native, BoolTest::ne) ); |
0 | 3648 |
3649 return generate_slow_guard(test_native, slow_region); | |
3650 } | |
3651 | |
3652 //-----------------------generate_method_call---------------------------- | |
3653 // Use generate_method_call to make a slow-call to the real | |
3654 // method if the fast path fails. An alternative would be to | |
3655 // use a stub like OptoRuntime::slow_arraycopy_Java. | |
3656 // This only works for expanding the current library call, | |
3657 // not another intrinsic. (E.g., don't use this for making an | |
3658 // arraycopy call inside of the copyOf intrinsic.) | |
3659 CallJavaNode* | |
3660 LibraryCallKit::generate_method_call(vmIntrinsics::ID method_id, bool is_virtual, bool is_static) { | |
3661 // When compiling the intrinsic method itself, do not use this technique. | |
3662 guarantee(callee() != C->method(), "cannot make slow-call to self"); | |
3663 | |
3664 ciMethod* method = callee(); | |
3665 // ensure the JVMS we have will be correct for this call | |
3666 guarantee(method_id == method->intrinsic_id(), "must match"); | |
3667 | |
3668 const TypeFunc* tf = TypeFunc::make(method); | |
3669 CallJavaNode* slow_call; | |
3670 if (is_static) { | |
3671 assert(!is_virtual, ""); | |
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3672 slow_call = new(C) CallStaticJavaNode(tf, |
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3673 SharedRuntime::get_resolve_static_call_stub(), |
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3674 method, bci()); |
0 | 3675 } else if (is_virtual) { |
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3676 null_check_receiver(); |
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3677 int vtable_index = Method::invalid_vtable_index; |
0 | 3678 if (UseInlineCaches) { |
3679 // Suppress the vtable call | |
3680 } else { | |
3681 // hashCode and clone are not a miranda methods, | |
3682 // so the vtable index is fixed. | |
3683 // No need to use the linkResolver to get it. | |
3684 vtable_index = method->vtable_index(); | |
3685 } | |
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3686 slow_call = new(C) CallDynamicJavaNode(tf, |
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3687 SharedRuntime::get_resolve_virtual_call_stub(), |
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3688 method, vtable_index, bci()); |
0 | 3689 } else { // neither virtual nor static: opt_virtual |
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3690 null_check_receiver(); |
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3691 slow_call = new(C) CallStaticJavaNode(tf, |
0 | 3692 SharedRuntime::get_resolve_opt_virtual_call_stub(), |
3693 method, bci()); | |
3694 slow_call->set_optimized_virtual(true); | |
3695 } | |
3696 set_arguments_for_java_call(slow_call); | |
3697 set_edges_for_java_call(slow_call); | |
3698 return slow_call; | |
3699 } | |
3700 | |
3701 | |
3702 //------------------------------inline_native_hashcode-------------------- | |
3703 // Build special case code for calls to hashCode on an object. | |
3704 bool LibraryCallKit::inline_native_hashcode(bool is_virtual, bool is_static) { | |
3705 assert(is_static == callee()->is_static(), "correct intrinsic selection"); | |
3706 assert(!(is_virtual && is_static), "either virtual, special, or static"); | |
3707 | |
3708 enum { _slow_path = 1, _fast_path, _null_path, PATH_LIMIT }; | |
3709 | |
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3710 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
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3711 PhiNode* result_val = new(C) PhiNode(result_reg, |
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3712 TypeInt::INT); |
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3713 PhiNode* result_io = new(C) PhiNode(result_reg, Type::ABIO); |
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3714 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
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3715 TypePtr::BOTTOM); |
0 | 3716 Node* obj = NULL; |
3717 if (!is_static) { | |
3718 // Check for hashing null object | |
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3719 obj = null_check_receiver(); |
0 | 3720 if (stopped()) return true; // unconditionally null |
3721 result_reg->init_req(_null_path, top()); | |
3722 result_val->init_req(_null_path, top()); | |
3723 } else { | |
3724 // Do a null check, and return zero if null. | |
3725 // System.identityHashCode(null) == 0 | |
3726 obj = argument(0); | |
3727 Node* null_ctl = top(); | |
3728 obj = null_check_oop(obj, &null_ctl); | |
3729 result_reg->init_req(_null_path, null_ctl); | |
3730 result_val->init_req(_null_path, _gvn.intcon(0)); | |
3731 } | |
3732 | |
3733 // Unconditionally null? Then return right away. | |
3734 if (stopped()) { | |
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3735 set_control( result_reg->in(_null_path)); |
0 | 3736 if (!stopped()) |
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3737 set_result(result_val->in(_null_path)); |
0 | 3738 return true; |
3739 } | |
3740 | |
3741 // After null check, get the object's klass. | |
3742 Node* obj_klass = load_object_klass(obj); | |
3743 | |
3744 // This call may be virtual (invokevirtual) or bound (invokespecial). | |
3745 // For each case we generate slightly different code. | |
3746 | |
3747 // We only go to the fast case code if we pass a number of guards. The | |
3748 // paths which do not pass are accumulated in the slow_region. | |
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3749 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 3750 record_for_igvn(slow_region); |
3751 | |
3752 // If this is a virtual call, we generate a funny guard. We pull out | |
3753 // the vtable entry corresponding to hashCode() from the target object. | |
3754 // If the target method which we are calling happens to be the native | |
3755 // Object hashCode() method, we pass the guard. We do not need this | |
3756 // guard for non-virtual calls -- the caller is known to be the native | |
3757 // Object hashCode(). | |
3758 if (is_virtual) { | |
3759 generate_virtual_guard(obj_klass, slow_region); | |
3760 } | |
3761 | |
3762 // Get the header out of the object, use LoadMarkNode when available | |
3763 Node* header_addr = basic_plus_adr(obj, oopDesc::mark_offset_in_bytes()); | |
1609 | 3764 Node* header = make_load(control(), header_addr, TypeX_X, TypeX_X->basic_type()); |
0 | 3765 |
3766 // Test the header to see if it is unlocked. | |
3767 Node *lock_mask = _gvn.MakeConX(markOopDesc::biased_lock_mask_in_place); | |
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3768 Node *lmasked_header = _gvn.transform( new (C) AndXNode(header, lock_mask) ); |
0 | 3769 Node *unlocked_val = _gvn.MakeConX(markOopDesc::unlocked_value); |
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3770 Node *chk_unlocked = _gvn.transform( new (C) CmpXNode( lmasked_header, unlocked_val)); |
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3771 Node *test_unlocked = _gvn.transform( new (C) BoolNode( chk_unlocked, BoolTest::ne) ); |
0 | 3772 |
3773 generate_slow_guard(test_unlocked, slow_region); | |
3774 | |
3775 // Get the hash value and check to see that it has been properly assigned. | |
3776 // We depend on hash_mask being at most 32 bits and avoid the use of | |
3777 // hash_mask_in_place because it could be larger than 32 bits in a 64-bit | |
3778 // vm: see markOop.hpp. | |
3779 Node *hash_mask = _gvn.intcon(markOopDesc::hash_mask); | |
3780 Node *hash_shift = _gvn.intcon(markOopDesc::hash_shift); | |
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3781 Node *hshifted_header= _gvn.transform( new (C) URShiftXNode(header, hash_shift) ); |
0 | 3782 // This hack lets the hash bits live anywhere in the mark object now, as long |
605 | 3783 // as the shift drops the relevant bits into the low 32 bits. Note that |
0 | 3784 // Java spec says that HashCode is an int so there's no point in capturing |
3785 // an 'X'-sized hashcode (32 in 32-bit build or 64 in 64-bit build). | |
3786 hshifted_header = ConvX2I(hshifted_header); | |
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3787 Node *hash_val = _gvn.transform( new (C) AndINode(hshifted_header, hash_mask) ); |
0 | 3788 |
3789 Node *no_hash_val = _gvn.intcon(markOopDesc::no_hash); | |
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3790 Node *chk_assigned = _gvn.transform( new (C) CmpINode( hash_val, no_hash_val)); |
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3791 Node *test_assigned = _gvn.transform( new (C) BoolNode( chk_assigned, BoolTest::eq) ); |
0 | 3792 |
3793 generate_slow_guard(test_assigned, slow_region); | |
3794 | |
3795 Node* init_mem = reset_memory(); | |
3796 // fill in the rest of the null path: | |
3797 result_io ->init_req(_null_path, i_o()); | |
3798 result_mem->init_req(_null_path, init_mem); | |
3799 | |
3800 result_val->init_req(_fast_path, hash_val); | |
3801 result_reg->init_req(_fast_path, control()); | |
3802 result_io ->init_req(_fast_path, i_o()); | |
3803 result_mem->init_req(_fast_path, init_mem); | |
3804 | |
3805 // Generate code for the slow case. We make a call to hashCode(). | |
3806 set_control(_gvn.transform(slow_region)); | |
3807 if (!stopped()) { | |
3808 // No need for PreserveJVMState, because we're using up the present state. | |
3809 set_all_memory(init_mem); | |
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3810 vmIntrinsics::ID hashCode_id = is_static ? vmIntrinsics::_identityHashCode : vmIntrinsics::_hashCode; |
0 | 3811 CallJavaNode* slow_call = generate_method_call(hashCode_id, is_virtual, is_static); |
3812 Node* slow_result = set_results_for_java_call(slow_call); | |
3813 // this->control() comes from set_results_for_java_call | |
3814 result_reg->init_req(_slow_path, control()); | |
3815 result_val->init_req(_slow_path, slow_result); | |
3816 result_io ->set_req(_slow_path, i_o()); | |
3817 result_mem ->set_req(_slow_path, reset_memory()); | |
3818 } | |
3819 | |
3820 // Return the combined state. | |
3821 set_i_o( _gvn.transform(result_io) ); | |
3822 set_all_memory( _gvn.transform(result_mem) ); | |
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3823 |
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3824 set_result(result_reg, result_val); |
0 | 3825 return true; |
3826 } | |
3827 | |
3828 //---------------------------inline_native_getClass---------------------------- | |
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3829 // public final native Class<?> java.lang.Object.getClass(); |
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3830 // |
605 | 3831 // Build special case code for calls to getClass on an object. |
0 | 3832 bool LibraryCallKit::inline_native_getClass() { |
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3833 Node* obj = null_check_receiver(); |
0 | 3834 if (stopped()) return true; |
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3835 set_result(load_mirror_from_klass(load_object_klass(obj))); |
0 | 3836 return true; |
3837 } | |
3838 | |
3839 //-----------------inline_native_Reflection_getCallerClass--------------------- | |
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3840 // public static native Class<?> sun.reflect.Reflection.getCallerClass(int realFramesToSkip); |
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3841 // |
0 | 3842 // In the presence of deep enough inlining, getCallerClass() becomes a no-op. |
3843 // | |
3844 // NOTE that this code must perform the same logic as | |
3845 // vframeStream::security_get_caller_frame in that it must skip | |
3846 // Method.invoke() and auxiliary frames. | |
3847 bool LibraryCallKit::inline_native_Reflection_getCallerClass() { | |
3848 #ifndef PRODUCT | |
3849 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
3850 tty->print_cr("Attempting to inline sun.reflect.Reflection.getCallerClass"); | |
3851 } | |
3852 #endif | |
3853 | |
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3854 Node* caller_depth_node = argument(0); |
0 | 3855 |
3856 // The depth value must be a constant in order for the runtime call | |
3857 // to be eliminated. | |
3858 const TypeInt* caller_depth_type = _gvn.type(caller_depth_node)->isa_int(); | |
3859 if (caller_depth_type == NULL || !caller_depth_type->is_con()) { | |
3860 #ifndef PRODUCT | |
3861 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
3862 tty->print_cr(" Bailing out because caller depth was not a constant"); | |
3863 } | |
3864 #endif | |
3865 return false; | |
3866 } | |
3867 // Note that the JVM state at this point does not include the | |
3868 // getCallerClass() frame which we are trying to inline. The | |
3869 // semantics of getCallerClass(), however, are that the "first" | |
3870 // frame is the getCallerClass() frame, so we subtract one from the | |
3871 // requested depth before continuing. We don't inline requests of | |
3872 // getCallerClass(0). | |
3873 int caller_depth = caller_depth_type->get_con() - 1; | |
3874 if (caller_depth < 0) { | |
3875 #ifndef PRODUCT | |
3876 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
3877 tty->print_cr(" Bailing out because caller depth was %d", caller_depth); | |
3878 } | |
3879 #endif | |
3880 return false; | |
3881 } | |
3882 | |
3883 if (!jvms()->has_method()) { | |
3884 #ifndef PRODUCT | |
3885 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
3886 tty->print_cr(" Bailing out because intrinsic was inlined at top level"); | |
3887 } | |
3888 #endif | |
3889 return false; | |
3890 } | |
3891 int _depth = jvms()->depth(); // cache call chain depth | |
3892 | |
3893 // Walk back up the JVM state to find the caller at the required | |
3894 // depth. NOTE that this code must perform the same logic as | |
3895 // vframeStream::security_get_caller_frame in that it must skip | |
3896 // Method.invoke() and auxiliary frames. Note also that depth is | |
3897 // 1-based (1 is the bottom of the inlining). | |
3898 int inlining_depth = _depth; | |
3899 JVMState* caller_jvms = NULL; | |
3900 | |
3901 if (inlining_depth > 0) { | |
3902 caller_jvms = jvms(); | |
3903 assert(caller_jvms = jvms()->of_depth(inlining_depth), "inlining_depth == our depth"); | |
3904 do { | |
3905 // The following if-tests should be performed in this order | |
3906 if (is_method_invoke_or_aux_frame(caller_jvms)) { | |
3907 // Skip a Method.invoke() or auxiliary frame | |
3908 } else if (caller_depth > 0) { | |
3909 // Skip real frame | |
3910 --caller_depth; | |
3911 } else { | |
3912 // We're done: reached desired caller after skipping. | |
3913 break; | |
3914 } | |
3915 caller_jvms = caller_jvms->caller(); | |
3916 --inlining_depth; | |
3917 } while (inlining_depth > 0); | |
3918 } | |
3919 | |
3920 if (inlining_depth == 0) { | |
3921 #ifndef PRODUCT | |
3922 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
3923 tty->print_cr(" Bailing out because caller depth (%d) exceeded inlining depth (%d)", caller_depth_type->get_con(), _depth); | |
3924 tty->print_cr(" JVM state at this point:"); | |
3925 for (int i = _depth; i >= 1; i--) { | |
7194
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|
3926 ciMethod* m = jvms()->of_depth(i)->method(); |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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changeset
|
3927 tty->print_cr(" %d) %s.%s", i, m->holder()->name()->as_utf8(), m->name()->as_utf8()); |
0 | 3928 } |
3929 } | |
3930 #endif | |
3931 return false; // Reached end of inlining | |
3932 } | |
3933 | |
3934 // Acquire method holder as java.lang.Class | |
3935 ciInstanceKlass* caller_klass = caller_jvms->method()->holder(); | |
3936 ciInstance* caller_mirror = caller_klass->java_mirror(); | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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diff
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|
3937 |
0 | 3938 // Push this as a constant |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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diff
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|
3939 set_result(makecon(TypeInstPtr::make(caller_mirror))); |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
3940 |
0 | 3941 #ifndef PRODUCT |
3942 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
3943 tty->print_cr(" Succeeded: caller = %s.%s, caller depth = %d, depth = %d", caller_klass->name()->as_utf8(), caller_jvms->method()->name()->as_utf8(), caller_depth_type->get_con(), _depth); | |
3944 tty->print_cr(" JVM state at this point:"); | |
3945 for (int i = _depth; i >= 1; i--) { | |
7194
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|
3946 ciMethod* m = jvms()->of_depth(i)->method(); |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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diff
changeset
|
3947 tty->print_cr(" %d) %s.%s", i, m->holder()->name()->as_utf8(), m->name()->as_utf8()); |
0 | 3948 } |
3949 } | |
3950 #endif | |
3951 return true; | |
3952 } | |
3953 | |
3954 // Helper routine for above | |
3955 bool LibraryCallKit::is_method_invoke_or_aux_frame(JVMState* jvms) { | |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
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1027
diff
changeset
|
3956 ciMethod* method = jvms->method(); |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
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diff
changeset
|
3957 |
0 | 3958 // Is this the Method.invoke method itself? |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
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1027
diff
changeset
|
3959 if (method->intrinsic_id() == vmIntrinsics::_invoke) |
0 | 3960 return true; |
3961 | |
3962 // Is this a helper, defined somewhere underneath MethodAccessorImpl. | |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
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diff
changeset
|
3963 ciKlass* k = method->holder(); |
0 | 3964 if (k->is_instance_klass()) { |
3965 ciInstanceKlass* ik = k->as_instance_klass(); | |
3966 for (; ik != NULL; ik = ik->super()) { | |
3967 if (ik->name() == ciSymbol::sun_reflect_MethodAccessorImpl() && | |
3968 ik == env()->find_system_klass(ik->name())) { | |
3969 return true; | |
3970 } | |
3971 } | |
3972 } | |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6205
diff
changeset
|
3973 else if (method->is_method_handle_intrinsic() || |
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
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6205
diff
changeset
|
3974 method->is_compiled_lambda_form()) { |
1152
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
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parents:
1027
diff
changeset
|
3975 // This is an internal adapter frame from the MethodHandleCompiler -- skip it |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
twisti
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1027
diff
changeset
|
3976 return true; |
cd37471eaecc
6914206: change way of permission checking for generated MethodHandle adapters
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1027
diff
changeset
|
3977 } |
0 | 3978 |
3979 return false; | |
3980 } | |
3981 | |
3982 bool LibraryCallKit::inline_fp_conversions(vmIntrinsics::ID id) { | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
3983 Node* arg = argument(0); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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diff
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|
3984 Node* result; |
0 | 3985 |
3986 switch (id) { | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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diff
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|
3987 case vmIntrinsics::_floatToRawIntBits: result = new (C) MoveF2INode(arg); break; |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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diff
changeset
|
3988 case vmIntrinsics::_intBitsToFloat: result = new (C) MoveI2FNode(arg); break; |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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changeset
|
3989 case vmIntrinsics::_doubleToRawLongBits: result = new (C) MoveD2LNode(arg); break; |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
3990 case vmIntrinsics::_longBitsToDouble: result = new (C) MoveL2DNode(arg); break; |
0 | 3991 |
3992 case vmIntrinsics::_doubleToLongBits: { | |
3993 // two paths (plus control) merge in a wood | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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6795
diff
changeset
|
3994 RegionNode *r = new (C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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6795
diff
changeset
|
3995 Node *phi = new (C) PhiNode(r, TypeLong::LONG); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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6795
diff
changeset
|
3996 |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
3997 Node *cmpisnan = _gvn.transform(new (C) CmpDNode(arg, arg)); |
0 | 3998 // Build the boolean node |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
3999 Node *bolisnan = _gvn.transform(new (C) BoolNode(cmpisnan, BoolTest::ne)); |
0 | 4000 |
4001 // Branch either way. | |
4002 // NaN case is less traveled, which makes all the difference. | |
4003 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
4004 Node *opt_isnan = _gvn.transform(ifisnan); | |
4005 assert( opt_isnan->is_If(), "Expect an IfNode"); | |
4006 IfNode *opt_ifisnan = (IfNode*)opt_isnan; | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4007 Node *iftrue = _gvn.transform( new (C) IfTrueNode(opt_ifisnan) ); |
0 | 4008 |
4009 set_control(iftrue); | |
4010 | |
4011 static const jlong nan_bits = CONST64(0x7ff8000000000000); | |
4012 Node *slow_result = longcon(nan_bits); // return NaN | |
4013 phi->init_req(1, _gvn.transform( slow_result )); | |
4014 r->init_req(1, iftrue); | |
4015 | |
4016 // Else fall through | |
7194
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twisti
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6894
diff
changeset
|
4017 Node *iffalse = _gvn.transform(new (C) IfFalseNode(opt_ifisnan)); |
0 | 4018 set_control(iffalse); |
4019 | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
4020 phi->init_req(2, _gvn.transform(new (C) MoveD2LNode(arg))); |
0 | 4021 r->init_req(2, iffalse); |
4022 | |
4023 // Post merge | |
4024 set_control(_gvn.transform(r)); | |
4025 record_for_igvn(r); | |
4026 | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4027 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
|
4028 result = phi; |
0 | 4029 assert(result->bottom_type()->isa_long(), "must be"); |
4030 break; | |
4031 } | |
4032 | |
4033 case vmIntrinsics::_floatToIntBits: { | |
4034 // 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
|
4035 RegionNode *r = new (C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4036 Node *phi = new (C) PhiNode(r, TypeInt::INT); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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6795
diff
changeset
|
4037 |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
4038 Node *cmpisnan = _gvn.transform(new (C) CmpFNode(arg, arg)); |
0 | 4039 // Build the boolean node |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4040 Node *bolisnan = _gvn.transform(new (C) BoolNode(cmpisnan, BoolTest::ne)); |
0 | 4041 |
4042 // Branch either way. | |
4043 // NaN case is less traveled, which makes all the difference. | |
4044 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
4045 Node *opt_isnan = _gvn.transform(ifisnan); | |
4046 assert( opt_isnan->is_If(), "Expect an IfNode"); | |
4047 IfNode *opt_ifisnan = (IfNode*)opt_isnan; | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4048 Node *iftrue = _gvn.transform( new (C) IfTrueNode(opt_ifisnan) ); |
0 | 4049 |
4050 set_control(iftrue); | |
4051 | |
4052 static const jint nan_bits = 0x7fc00000; | |
4053 Node *slow_result = makecon(TypeInt::make(nan_bits)); // return NaN | |
4054 phi->init_req(1, _gvn.transform( slow_result )); | |
4055 r->init_req(1, iftrue); | |
4056 | |
4057 // Else fall through | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4058 Node *iffalse = _gvn.transform(new (C) IfFalseNode(opt_ifisnan)); |
0 | 4059 set_control(iffalse); |
4060 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4061 phi->init_req(2, _gvn.transform(new (C) MoveF2INode(arg))); |
0 | 4062 r->init_req(2, iffalse); |
4063 | |
4064 // Post merge | |
4065 set_control(_gvn.transform(r)); | |
4066 record_for_igvn(r); | |
4067 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4068 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
|
4069 result = phi; |
0 | 4070 assert(result->bottom_type()->isa_int(), "must be"); |
4071 break; | |
4072 } | |
4073 | |
4074 default: | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4075 fatal_unexpected_iid(id); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4076 break; |
0 | 4077 } |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4078 set_result(_gvn.transform(result)); |
0 | 4079 return true; |
4080 } | |
4081 | |
4082 #ifdef _LP64 | |
4083 #define XTOP ,top() /*additional argument*/ | |
4084 #else //_LP64 | |
4085 #define XTOP /*no additional argument*/ | |
4086 #endif //_LP64 | |
4087 | |
4088 //----------------------inline_unsafe_copyMemory------------------------- | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4089 // public native void sun.misc.Unsafe.copyMemory(Object srcBase, long srcOffset, Object destBase, long destOffset, long bytes); |
0 | 4090 bool LibraryCallKit::inline_unsafe_copyMemory() { |
4091 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
|
4092 null_check_receiver(); // null-check receiver |
0 | 4093 if (stopped()) return true; |
4094 | |
4095 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
4096 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4097 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
|
4098 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
|
4099 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
|
4100 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
|
4101 Node* size = ConvL2X(argument(7)); // type: long |
0 | 4102 |
4103 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
4104 "fieldOffset must be byte-scaled"); | |
4105 | |
4106 Node* src = make_unsafe_address(src_ptr, src_off); | |
4107 Node* dst = make_unsafe_address(dst_ptr, dst_off); | |
4108 | |
4109 // Conservatively insert a memory barrier on all memory slices. | |
4110 // Do not let writes of the copy source or destination float below the copy. | |
4111 insert_mem_bar(Op_MemBarCPUOrder); | |
4112 | |
4113 // Call it. Note that the length argument is not scaled. | |
4114 make_runtime_call(RC_LEAF|RC_NO_FP, | |
4115 OptoRuntime::fast_arraycopy_Type(), | |
4116 StubRoutines::unsafe_arraycopy(), | |
4117 "unsafe_arraycopy", | |
4118 TypeRawPtr::BOTTOM, | |
4119 src, dst, size XTOP); | |
4120 | |
4121 // Do not let reads of the copy destination float above the copy. | |
4122 insert_mem_bar(Op_MemBarCPUOrder); | |
4123 | |
4124 return true; | |
4125 } | |
4126 | |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4127 //------------------------clone_coping----------------------------------- |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4128 // 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
|
4129 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
|
4130 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
|
4131 Node* raw_obj = alloc_obj->in(1); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4132 assert(alloc_obj->is_CheckCastPP() && raw_obj->is_Proj() && raw_obj->in(0)->is_Allocate(), ""); |
acba6af809c8
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kvn
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827
diff
changeset
|
4133 |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
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4762
diff
changeset
|
4134 AllocateNode* alloc = NULL; |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4135 if (ReduceBulkZeroing) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4136 // 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
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827
diff
changeset
|
4137 // mark Initialize node as complete. |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
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4762
diff
changeset
|
4138 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
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827
diff
changeset
|
4139 // 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
|
4140 guarantee(alloc != NULL && alloc->maybe_set_complete(&_gvn), ""); |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
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4762
diff
changeset
|
4141 // Mark as complete_with_arraycopy so that on AllocateNode |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
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4762
diff
changeset
|
4142 // expansion, we know this AllocateNode is initialized by an array |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
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4762
diff
changeset
|
4143 // 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
|
4144 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
|
4145 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4146 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4147 // Copy the fastest available way. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
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827
diff
changeset
|
4148 // 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
|
4149 Node* src = obj; |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4150 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
|
4151 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
|
4152 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4153 // 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
|
4154 // 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
|
4155 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
|
4156 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
|
4157 // base_off: |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4158 // 8 - 32-bit VM |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4159 // 12 - 64-bit VM, compressed klass |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4160 // 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
|
4161 if (base_off % BytesPerLong != 0) { |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6847
diff
changeset
|
4162 assert(UseCompressedKlassPointers, ""); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4163 if (is_array) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4164 // 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
|
4165 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
|
4166 } else { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4167 // 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
|
4168 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
|
4169 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4170 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
|
4171 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4172 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
|
4173 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
|
4174 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4175 // 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
|
4176 Node* countx = size; |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4177 countx = _gvn.transform( new (C) SubXNode(countx, MakeConX(base_off)) ); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4178 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
|
4179 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4180 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
|
4181 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
|
4182 generate_unchecked_arraycopy(raw_adr_type, T_LONG, disjoint_bases, |
2324 | 4183 src, NULL, dest, NULL, countx, |
4184 /*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
|
4185 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4186 // 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
|
4187 if (card_mark) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4188 assert(!is_array, ""); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4189 // 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
|
4190 // 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
|
4191 // 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
|
4192 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
|
4193 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
|
4194 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
|
4195 post_barrier(control(), |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4196 memory(raw_adr_type), |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4197 alloc_obj, |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4198 no_particular_field, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4199 raw_adr_idx, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4200 no_particular_value, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4201 T_OBJECT, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4202 false); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4203 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4204 |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4205 // 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
|
4206 if (alloc != NULL) { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4207 // 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
|
4208 // 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
|
4209 // other threads. |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4210 // 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
|
4211 // 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
|
4212 // AllocateNode and eliminate the MemBarStoreStoreNode if possible |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4213 // 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
|
4214 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
|
4215 } else { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4216 insert_mem_bar(Op_MemBarCPUOrder); |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4217 } |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4218 } |
0 | 4219 |
4220 //------------------------inline_native_clone---------------------------- | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4221 // 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
|
4222 // |
0 | 4223 // Here are the simple edge cases: |
4224 // null receiver => normal trap | |
4225 // virtual and clone was overridden => slow path to out-of-line clone | |
4226 // not cloneable or finalizer => slow path to out-of-line Object.clone | |
4227 // | |
4228 // The general case has two steps, allocation and copying. | |
4229 // Allocation has two cases, and uses GraphKit::new_instance or new_array. | |
4230 // | |
4231 // Copying also has two cases, oop arrays and everything else. | |
4232 // Oop arrays use arrayof_oop_arraycopy (same as System.arraycopy). | |
4233 // Everything else uses the tight inline loop supplied by CopyArrayNode. | |
4234 // | |
4235 // These steps fold up nicely if and when the cloned object's klass | |
4236 // can be sharply typed as an object array, a type array, or an instance. | |
4237 // | |
4238 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
|
4239 PhiNode* result_val; |
0 | 4240 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4241 // 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
|
4242 // 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
|
4243 { PreserveReexecuteState preexecs(this); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4244 jvms()->set_should_reexecute(true); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4245 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4246 Node* obj = null_check_receiver(); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4247 if (stopped()) return true; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4248 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4249 Node* obj_klass = load_object_klass(obj); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4250 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
|
4251 const TypeOopPtr* toop = ((tklass != NULL) |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4252 ? tklass->as_instance_type() |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4253 : TypeInstPtr::NOTNULL); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4254 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4255 // 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
|
4256 // 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
|
4257 insert_mem_bar(Op_MemBarCPUOrder); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4258 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4259 // paths into result_reg: |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4260 enum { |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4261 _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
|
4262 _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
|
4263 _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
|
4264 _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
|
4265 PATH_LIMIT |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4266 }; |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4267 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
|
4268 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
|
4269 TypeInstPtr::NOTNULL); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4270 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
|
4271 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
|
4272 TypePtr::BOTTOM); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4273 record_for_igvn(result_reg); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4274 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4275 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4276 int raw_adr_idx = Compile::AliasIdxRaw; |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4277 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4278 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
|
4279 if (array_ctl != NULL) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4280 // It's an array. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
changeset
|
4281 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
changeset
|
4282 set_control(array_ctl); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4283 Node* obj_length = load_array_length(obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4284 Node* obj_size = NULL; |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4285 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
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diff
changeset
|
4286 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4287 if (!use_ReduceInitialCardMarks()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4288 // If it is an oop array, it requires very special treatment, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4289 // because card marking is required on each card of the array. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4290 Node* is_obja = generate_objArray_guard(obj_klass, (RegionNode*)NULL); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4291 if (is_obja != NULL) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4292 PreserveJVMState pjvms2(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4293 set_control(is_obja); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4294 // Generate a direct call to the right arraycopy function(s). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4295 bool disjoint_bases = true; |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4296 bool length_never_negative = true; |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4297 generate_arraycopy(TypeAryPtr::OOPS, T_OBJECT, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4298 obj, intcon(0), alloc_obj, intcon(0), |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4299 obj_length, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4300 disjoint_bases, length_never_negative); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4301 result_reg->init_req(_objArray_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
changeset
|
4302 result_val->init_req(_objArray_path, alloc_obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
changeset
|
4303 result_i_o ->set_req(_objArray_path, i_o()); |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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diff
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|
4304 result_mem ->set_req(_objArray_path, reset_memory()); |
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diff
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|
4305 } |
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cfang
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diff
changeset
|
4306 } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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896
diff
changeset
|
4307 // 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
|
4308 // (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
|
4309 // comes out of eden (TLAB)... In fact, ReduceInitialCardMarks |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
986
diff
changeset
|
4310 // 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
|
4311 // simulate a fresh allocation, so that no further |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
986
diff
changeset
|
4312 // 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
|
4313 // the object.) |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4314 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4315 if (!stopped()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4316 copy_to_clone(obj, alloc_obj, obj_size, true, false); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4317 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4318 // Present the results of the copy. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4319 result_reg->init_req(_array_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4320 result_val->init_req(_array_path, alloc_obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4321 result_i_o ->set_req(_array_path, i_o()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
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|
4322 result_mem ->set_req(_array_path, reset_memory()); |
0 | 4323 } |
4324 } | |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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diff
changeset
|
4325 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4326 // 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
parents:
896
diff
changeset
|
4327 // The paths which do not pass are accumulated in the slow_region. |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4328 RegionNode* slow_region = new (C) RegionNode(1); |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4329 record_for_igvn(slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4330 if (!stopped()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4331 // It's an instance (we did array above). Make the slow-path tests. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4332 // If this is a virtual call, we generate a funny guard. We grab |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4333 // the vtable entry corresponding to clone() from the target object. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4334 // If the target method which we are calling happens to be the |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4335 // Object clone() method, we pass the guard. We do not need this |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4336 // guard for non-virtual calls; the caller is known to be the native |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4337 // Object clone(). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4338 if (is_virtual) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4339 generate_virtual_guard(obj_klass, slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4340 } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4341 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4342 // The object must be cloneable and must not have a finalizer. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4343 // Both of these conditions may be checked in a single test. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4344 // We could optimize the cloneable test further, but we don't care. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4345 generate_access_flags_guard(obj_klass, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4346 // Test both conditions: |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4347 JVM_ACC_IS_CLONEABLE | JVM_ACC_HAS_FINALIZER, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4348 // Must be cloneable but not finalizer: |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4349 JVM_ACC_IS_CLONEABLE, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4350 slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4351 } |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4352 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4353 if (!stopped()) { |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4354 // It's an instance, and it passed the slow-path tests. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4355 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4356 Node* obj_size = NULL; |
3278
66b0e2371912
7026700: regression in 6u24-rev-b23: Crash in C2 compiler in PhaseIdealLoop::build_loop_late_post
kvn
parents:
2446
diff
changeset
|
4357 Node* alloc_obj = new_instance(obj_klass, NULL, &obj_size); |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4358 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4359 copy_to_clone(obj, alloc_obj, obj_size, false, !use_ReduceInitialCardMarks()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4360 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4361 // Present the results of the slow call. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4362 result_reg->init_req(_instance_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4363 result_val->init_req(_instance_path, alloc_obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4364 result_i_o ->set_req(_instance_path, i_o()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4365 result_mem ->set_req(_instance_path, reset_memory()); |
0 | 4366 } |
4367 | |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4368 // Generate code for the slow case. We make a call to clone(). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4369 set_control(_gvn.transform(slow_region)); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4370 if (!stopped()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4371 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4372 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_clone, is_virtual); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4373 Node* slow_result = set_results_for_java_call(slow_call); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4374 // this->control() comes from set_results_for_java_call |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4375 result_reg->init_req(_slow_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4376 result_val->init_req(_slow_path, slow_result); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4377 result_i_o ->set_req(_slow_path, i_o()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
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896
diff
changeset
|
4378 result_mem ->set_req(_slow_path, reset_memory()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4379 } |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4380 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4381 // Return the combined state. |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4382 set_control( _gvn.transform(result_reg) ); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4383 set_i_o( _gvn.transform(result_i_o) ); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4384 set_all_memory( _gvn.transform(result_mem) ); |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4385 } // original reexecute is set back here |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4386 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4387 set_result(_gvn.transform(result_val)); |
0 | 4388 return true; |
4389 } | |
4390 | |
4391 //------------------------------basictype2arraycopy---------------------------- | |
4392 address LibraryCallKit::basictype2arraycopy(BasicType t, | |
4393 Node* src_offset, | |
4394 Node* dest_offset, | |
4395 bool disjoint_bases, | |
2324 | 4396 const char* &name, |
4397 bool dest_uninitialized) { | |
0 | 4398 const TypeInt* src_offset_inttype = gvn().find_int_type(src_offset);; |
4399 const TypeInt* dest_offset_inttype = gvn().find_int_type(dest_offset);; | |
4400 | |
4401 bool aligned = false; | |
4402 bool disjoint = disjoint_bases; | |
4403 | |
4404 // if the offsets are the same, we can treat the memory regions as | |
4405 // disjoint, because either the memory regions are in different arrays, | |
4406 // or they are identical (which we can treat as disjoint.) We can also | |
4407 // treat a copy with a destination index less that the source index | |
4408 // as disjoint since a low->high copy will work correctly in this case. | |
4409 if (src_offset_inttype != NULL && src_offset_inttype->is_con() && | |
4410 dest_offset_inttype != NULL && dest_offset_inttype->is_con()) { | |
4411 // both indices are constants | |
4412 int s_offs = src_offset_inttype->get_con(); | |
4413 int d_offs = dest_offset_inttype->get_con(); | |
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4414 int element_size = type2aelembytes(t); |
0 | 4415 aligned = ((arrayOopDesc::base_offset_in_bytes(t) + s_offs * element_size) % HeapWordSize == 0) && |
4416 ((arrayOopDesc::base_offset_in_bytes(t) + d_offs * element_size) % HeapWordSize == 0); | |
4417 if (s_offs >= d_offs) disjoint = true; | |
4418 } else if (src_offset == dest_offset && src_offset != NULL) { | |
4419 // This can occur if the offsets are identical non-constants. | |
4420 disjoint = true; | |
4421 } | |
4422 | |
2446 | 4423 return StubRoutines::select_arraycopy_function(t, aligned, disjoint, name, dest_uninitialized); |
0 | 4424 } |
4425 | |
4426 | |
4427 //------------------------------inline_arraycopy----------------------- | |
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4428 // public static native void java.lang.System.arraycopy(Object src, int srcPos, |
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4429 // Object dest, int destPos, |
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4430 // int length); |
0 | 4431 bool LibraryCallKit::inline_arraycopy() { |
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4432 // Get the arguments. |
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4433 Node* src = argument(0); // type: oop |
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4434 Node* src_offset = argument(1); // type: int |
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4435 Node* dest = argument(2); // type: oop |
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4436 Node* dest_offset = argument(3); // type: int |
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4437 Node* length = argument(4); // type: int |
0 | 4438 |
4439 // Compile time checks. If any of these checks cannot be verified at compile time, | |
4440 // we do not make a fast path for this call. Instead, we let the call remain as it | |
4441 // is. The checks we choose to mandate at compile time are: | |
4442 // | |
4443 // (1) src and dest are arrays. | |
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4444 const Type* src_type = src->Value(&_gvn); |
0 | 4445 const Type* dest_type = dest->Value(&_gvn); |
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4446 const TypeAryPtr* top_src = src_type->isa_aryptr(); |
0 | 4447 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); |
4448 if (top_src == NULL || top_src->klass() == NULL || | |
4449 top_dest == NULL || top_dest->klass() == NULL) { | |
4450 // Conservatively insert a memory barrier on all memory slices. | |
4451 // Do not let writes into the source float below the arraycopy. | |
4452 insert_mem_bar(Op_MemBarCPUOrder); | |
4453 | |
4454 // Call StubRoutines::generic_arraycopy stub. | |
4455 generate_arraycopy(TypeRawPtr::BOTTOM, T_CONFLICT, | |
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4456 src, src_offset, dest, dest_offset, length); |
0 | 4457 |
4458 // Do not let reads from the destination float above the arraycopy. | |
4459 // Since we cannot type the arrays, we don't know which slices | |
4460 // might be affected. We could restrict this barrier only to those | |
4461 // memory slices which pertain to array elements--but don't bother. | |
4462 if (!InsertMemBarAfterArraycopy) | |
4463 // (If InsertMemBarAfterArraycopy, there is already one in place.) | |
4464 insert_mem_bar(Op_MemBarCPUOrder); | |
4465 return true; | |
4466 } | |
4467 | |
4468 // (2) src and dest arrays must have elements of the same BasicType | |
4469 // Figure out the size and type of the elements we will be copying. | |
4470 BasicType src_elem = top_src->klass()->as_array_klass()->element_type()->basic_type(); | |
4471 BasicType dest_elem = top_dest->klass()->as_array_klass()->element_type()->basic_type(); | |
4472 if (src_elem == T_ARRAY) src_elem = T_OBJECT; | |
4473 if (dest_elem == T_ARRAY) dest_elem = T_OBJECT; | |
4474 | |
4475 if (src_elem != dest_elem || dest_elem == T_VOID) { | |
4476 // The component types are not the same or are not recognized. Punt. | |
4477 // (But, avoid the native method wrapper to JVM_ArrayCopy.) | |
4478 generate_slow_arraycopy(TypePtr::BOTTOM, | |
2324 | 4479 src, src_offset, dest, dest_offset, length, |
4480 /*dest_uninitialized*/false); | |
0 | 4481 return true; |
4482 } | |
4483 | |
4484 //--------------------------------------------------------------------------- | |
4485 // We will make a fast path for this call to arraycopy. | |
4486 | |
4487 // We have the following tests left to perform: | |
4488 // | |
4489 // (3) src and dest must not be null. | |
4490 // (4) src_offset must not be negative. | |
4491 // (5) dest_offset must not be negative. | |
4492 // (6) length must not be negative. | |
4493 // (7) src_offset + length must not exceed length of src. | |
4494 // (8) dest_offset + length must not exceed length of dest. | |
4495 // (9) each element of an oop array must be assignable | |
4496 | |
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4497 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 4498 record_for_igvn(slow_region); |
4499 | |
4500 // (3) operands must not be null | |
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4501 // We currently perform our null checks with the null_check routine. |
0 | 4502 // This means that the null exceptions will be reported in the caller |
4503 // rather than (correctly) reported inside of the native arraycopy call. | |
4504 // This should be corrected, given time. We do our null check with the | |
4505 // stack pointer restored. | |
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4506 src = null_check(src, T_ARRAY); |
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4507 dest = null_check(dest, T_ARRAY); |
0 | 4508 |
4509 // (4) src_offset must not be negative. | |
4510 generate_negative_guard(src_offset, slow_region); | |
4511 | |
4512 // (5) dest_offset must not be negative. | |
4513 generate_negative_guard(dest_offset, slow_region); | |
4514 | |
4515 // (6) length must not be negative (moved to generate_arraycopy()). | |
4516 // generate_negative_guard(length, slow_region); | |
4517 | |
4518 // (7) src_offset + length must not exceed length of src. | |
4519 generate_limit_guard(src_offset, length, | |
4520 load_array_length(src), | |
4521 slow_region); | |
4522 | |
4523 // (8) dest_offset + length must not exceed length of dest. | |
4524 generate_limit_guard(dest_offset, length, | |
4525 load_array_length(dest), | |
4526 slow_region); | |
4527 | |
4528 // (9) each element of an oop array must be assignable | |
4529 // The generate_arraycopy subroutine checks this. | |
4530 | |
4531 // This is where the memory effects are placed: | |
4532 const TypePtr* adr_type = TypeAryPtr::get_array_body_type(dest_elem); | |
4533 generate_arraycopy(adr_type, dest_elem, | |
4534 src, src_offset, dest, dest_offset, length, | |
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4535 false, false, slow_region); |
0 | 4536 |
4537 return true; | |
4538 } | |
4539 | |
4540 //-----------------------------generate_arraycopy---------------------- | |
4541 // Generate an optimized call to arraycopy. | |
4542 // Caller must guard against non-arrays. | |
4543 // Caller must determine a common array basic-type for both arrays. | |
4544 // Caller must validate offsets against array bounds. | |
4545 // The slow_region has already collected guard failure paths | |
4546 // (such as out of bounds length or non-conformable array types). | |
4547 // The generated code has this shape, in general: | |
4548 // | |
4549 // if (length == 0) return // via zero_path | |
4550 // slowval = -1 | |
4551 // if (types unknown) { | |
4552 // slowval = call generic copy loop | |
4553 // if (slowval == 0) return // via checked_path | |
4554 // } else if (indexes in bounds) { | |
4555 // if ((is object array) && !(array type check)) { | |
4556 // slowval = call checked copy loop | |
4557 // if (slowval == 0) return // via checked_path | |
4558 // } else { | |
4559 // call bulk copy loop | |
4560 // return // via fast_path | |
4561 // } | |
4562 // } | |
4563 // // adjust params for remaining work: | |
4564 // if (slowval != -1) { | |
4565 // n = -1^slowval; src_offset += n; dest_offset += n; length -= n | |
4566 // } | |
4567 // slow_region: | |
4568 // call slow arraycopy(src, src_offset, dest, dest_offset, length) | |
4569 // return // via slow_call_path | |
4570 // | |
4571 // This routine is used from several intrinsics: System.arraycopy, | |
4572 // Object.clone (the array subcase), and Arrays.copyOf[Range]. | |
4573 // | |
4574 void | |
4575 LibraryCallKit::generate_arraycopy(const TypePtr* adr_type, | |
4576 BasicType basic_elem_type, | |
4577 Node* src, Node* src_offset, | |
4578 Node* dest, Node* dest_offset, | |
4579 Node* copy_length, | |
4580 bool disjoint_bases, | |
4581 bool length_never_negative, | |
4582 RegionNode* slow_region) { | |
4583 | |
4584 if (slow_region == NULL) { | |
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4585 slow_region = new(C) RegionNode(1); |
0 | 4586 record_for_igvn(slow_region); |
4587 } | |
4588 | |
4589 Node* original_dest = dest; | |
4590 AllocateArrayNode* alloc = NULL; // used for zeroing, if needed | |
2324 | 4591 bool dest_uninitialized = false; |
0 | 4592 |
4593 // See if this is the initialization of a newly-allocated array. | |
4594 // If so, we will take responsibility here for initializing it to zero. | |
4595 // (Note: Because tightly_coupled_allocation performs checks on the | |
4596 // out-edges of the dest, we need to avoid making derived pointers | |
4597 // from it until we have checked its uses.) | |
4598 if (ReduceBulkZeroing | |
4599 && !ZeroTLAB // pointless if already zeroed | |
4600 && basic_elem_type != T_CONFLICT // avoid corner case | |
4778 | 4601 && !src->eqv_uncast(dest) |
0 | 4602 && ((alloc = tightly_coupled_allocation(dest, slow_region)) |
4603 != NULL) | |
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4604 && _gvn.find_int_con(alloc->in(AllocateNode::ALength), 1) > 0 |
0 | 4605 && alloc->maybe_set_complete(&_gvn)) { |
4606 // "You break it, you buy it." | |
4607 InitializeNode* init = alloc->initialization(); | |
4608 assert(init->is_complete(), "we just did this"); | |
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4609 init->set_complete_with_arraycopy(); |
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4610 assert(dest->is_CheckCastPP(), "sanity"); |
0 | 4611 assert(dest->in(0)->in(0) == init, "dest pinned"); |
4612 adr_type = TypeRawPtr::BOTTOM; // all initializations are into raw memory | |
4613 // From this point on, every exit path is responsible for | |
4614 // initializing any non-copied parts of the object to zero. | |
2324 | 4615 // Also, if this flag is set we make sure that arraycopy interacts properly |
4616 // with G1, eliding pre-barriers. See CR 6627983. | |
4617 dest_uninitialized = true; | |
0 | 4618 } else { |
4619 // No zeroing elimination here. | |
4620 alloc = NULL; | |
4621 //original_dest = dest; | |
2324 | 4622 //dest_uninitialized = false; |
0 | 4623 } |
4624 | |
4625 // Results are placed here: | |
4626 enum { fast_path = 1, // normal void-returning assembly stub | |
4627 checked_path = 2, // special assembly stub with cleanup | |
4628 slow_call_path = 3, // something went wrong; call the VM | |
4629 zero_path = 4, // bypass when length of copy is zero | |
4630 bcopy_path = 5, // copy primitive array by 64-bit blocks | |
4631 PATH_LIMIT = 6 | |
4632 }; | |
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4633 RegionNode* result_region = new(C) RegionNode(PATH_LIMIT); |
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4634 PhiNode* result_i_o = new(C) PhiNode(result_region, Type::ABIO); |
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4635 PhiNode* result_memory = new(C) PhiNode(result_region, Type::MEMORY, adr_type); |
0 | 4636 record_for_igvn(result_region); |
4637 _gvn.set_type_bottom(result_i_o); | |
4638 _gvn.set_type_bottom(result_memory); | |
4639 assert(adr_type != TypePtr::BOTTOM, "must be RawMem or a T[] slice"); | |
4640 | |
4641 // The slow_control path: | |
4642 Node* slow_control; | |
4643 Node* slow_i_o = i_o(); | |
4644 Node* slow_mem = memory(adr_type); | |
4645 debug_only(slow_control = (Node*) badAddress); | |
4646 | |
4647 // Checked control path: | |
4648 Node* checked_control = top(); | |
4649 Node* checked_mem = NULL; | |
4650 Node* checked_i_o = NULL; | |
4651 Node* checked_value = NULL; | |
4652 | |
4653 if (basic_elem_type == T_CONFLICT) { | |
2324 | 4654 assert(!dest_uninitialized, ""); |
0 | 4655 Node* cv = generate_generic_arraycopy(adr_type, |
4656 src, src_offset, dest, dest_offset, | |
2324 | 4657 copy_length, dest_uninitialized); |
0 | 4658 if (cv == NULL) cv = intcon(-1); // failure (no stub available) |
4659 checked_control = control(); | |
4660 checked_i_o = i_o(); | |
4661 checked_mem = memory(adr_type); | |
4662 checked_value = cv; | |
4663 set_control(top()); // no fast path | |
4664 } | |
4665 | |
4666 Node* not_pos = generate_nonpositive_guard(copy_length, length_never_negative); | |
4667 if (not_pos != NULL) { | |
4668 PreserveJVMState pjvms(this); | |
4669 set_control(not_pos); | |
4670 | |
4671 // (6) length must not be negative. | |
4672 if (!length_never_negative) { | |
4673 generate_negative_guard(copy_length, slow_region); | |
4674 } | |
4675 | |
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4676 // copy_length is 0. |
2324 | 4677 if (!stopped() && dest_uninitialized) { |
0 | 4678 Node* dest_length = alloc->in(AllocateNode::ALength); |
4778 | 4679 if (copy_length->eqv_uncast(dest_length) |
0 | 4680 || _gvn.find_int_con(dest_length, 1) <= 0) { |
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4681 // There is no zeroing to do. No need for a secondary raw memory barrier. |
0 | 4682 } else { |
4683 // Clear the whole thing since there are no source elements to copy. | |
4684 generate_clear_array(adr_type, dest, basic_elem_type, | |
4685 intcon(0), NULL, | |
4686 alloc->in(AllocateNode::AllocSize)); | |
836
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4687 // Use a secondary InitializeNode as raw memory barrier. |
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4688 // Currently it is needed only on this path since other |
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4689 // paths have stub or runtime calls as raw memory barriers. |
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4690 InitializeNode* init = insert_mem_bar_volatile(Op_Initialize, |
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4691 Compile::AliasIdxRaw, |
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4692 top())->as_Initialize(); |
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4693 init->set_complete(&_gvn); // (there is no corresponding AllocateNode) |
0 | 4694 } |
4695 } | |
4696 | |
4697 // Present the results of the fast call. | |
4698 result_region->init_req(zero_path, control()); | |
4699 result_i_o ->init_req(zero_path, i_o()); | |
4700 result_memory->init_req(zero_path, memory(adr_type)); | |
4701 } | |
4702 | |
2324 | 4703 if (!stopped() && dest_uninitialized) { |
0 | 4704 // We have to initialize the *uncopied* part of the array to zero. |
4705 // The copy destination is the slice dest[off..off+len]. The other slices | |
4706 // are dest_head = dest[0..off] and dest_tail = dest[off+len..dest.length]. | |
4707 Node* dest_size = alloc->in(AllocateNode::AllocSize); | |
4708 Node* dest_length = alloc->in(AllocateNode::ALength); | |
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4709 Node* dest_tail = _gvn.transform( new(C) AddINode(dest_offset, |
0 | 4710 copy_length) ); |
4711 | |
4712 // If there is a head section that needs zeroing, do it now. | |
4713 if (find_int_con(dest_offset, -1) != 0) { | |
4714 generate_clear_array(adr_type, dest, basic_elem_type, | |
4715 intcon(0), dest_offset, | |
4716 NULL); | |
4717 } | |
4718 | |
4719 // Next, perform a dynamic check on the tail length. | |
4720 // It is often zero, and we can win big if we prove this. | |
4721 // There are two wins: Avoid generating the ClearArray | |
4722 // with its attendant messy index arithmetic, and upgrade | |
4723 // the copy to a more hardware-friendly word size of 64 bits. | |
4724 Node* tail_ctl = NULL; | |
4778 | 4725 if (!stopped() && !dest_tail->eqv_uncast(dest_length)) { |
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4726 Node* cmp_lt = _gvn.transform( new(C) CmpINode(dest_tail, dest_length) ); |
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4727 Node* bol_lt = _gvn.transform( new(C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 4728 tail_ctl = generate_slow_guard(bol_lt, NULL); |
4729 assert(tail_ctl != NULL || !stopped(), "must be an outcome"); | |
4730 } | |
4731 | |
4732 // At this point, let's assume there is no tail. | |
4733 if (!stopped() && alloc != NULL && basic_elem_type != T_OBJECT) { | |
4734 // There is no tail. Try an upgrade to a 64-bit copy. | |
4735 bool didit = false; | |
4736 { PreserveJVMState pjvms(this); | |
4737 didit = generate_block_arraycopy(adr_type, basic_elem_type, alloc, | |
4738 src, src_offset, dest, dest_offset, | |
2324 | 4739 dest_size, dest_uninitialized); |
0 | 4740 if (didit) { |
4741 // Present the results of the block-copying fast call. | |
4742 result_region->init_req(bcopy_path, control()); | |
4743 result_i_o ->init_req(bcopy_path, i_o()); | |
4744 result_memory->init_req(bcopy_path, memory(adr_type)); | |
4745 } | |
4746 } | |
4747 if (didit) | |
4748 set_control(top()); // no regular fast path | |
4749 } | |
4750 | |
4751 // Clear the tail, if any. | |
4752 if (tail_ctl != NULL) { | |
4753 Node* notail_ctl = stopped() ? NULL : control(); | |
4754 set_control(tail_ctl); | |
4755 if (notail_ctl == NULL) { | |
4756 generate_clear_array(adr_type, dest, basic_elem_type, | |
4757 dest_tail, NULL, | |
4758 dest_size); | |
4759 } else { | |
4760 // Make a local merge. | |
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4761 Node* done_ctl = new(C) RegionNode(3); |
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4762 Node* done_mem = new(C) PhiNode(done_ctl, Type::MEMORY, adr_type); |
0 | 4763 done_ctl->init_req(1, notail_ctl); |
4764 done_mem->init_req(1, memory(adr_type)); | |
4765 generate_clear_array(adr_type, dest, basic_elem_type, | |
4766 dest_tail, NULL, | |
4767 dest_size); | |
4768 done_ctl->init_req(2, control()); | |
4769 done_mem->init_req(2, memory(adr_type)); | |
4770 set_control( _gvn.transform(done_ctl) ); | |
4771 set_memory( _gvn.transform(done_mem), adr_type ); | |
4772 } | |
4773 } | |
4774 } | |
4775 | |
4776 BasicType copy_type = basic_elem_type; | |
4777 assert(basic_elem_type != T_ARRAY, "caller must fix this"); | |
4778 if (!stopped() && copy_type == T_OBJECT) { | |
4779 // If src and dest have compatible element types, we can copy bits. | |
4780 // Types S[] and D[] are compatible if D is a supertype of S. | |
4781 // | |
4782 // If they are not, we will use checked_oop_disjoint_arraycopy, | |
4783 // which performs a fast optimistic per-oop check, and backs off | |
4784 // further to JVM_ArrayCopy on the first per-oop check that fails. | |
4785 // (Actually, we don't move raw bits only; the GC requires card marks.) | |
4786 | |
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4787 // Get the Klass* for both src and dest |
0 | 4788 Node* src_klass = load_object_klass(src); |
4789 Node* dest_klass = load_object_klass(dest); | |
4790 | |
4791 // Generate the subtype check. | |
4792 // This might fold up statically, or then again it might not. | |
4793 // | |
4794 // Non-static example: Copying List<String>.elements to a new String[]. | |
4795 // The backing store for a List<String> is always an Object[], | |
4796 // but its elements are always type String, if the generic types | |
4797 // are correct at the source level. | |
4798 // | |
4799 // Test S[] against D[], not S against D, because (probably) | |
4800 // the secondary supertype cache is less busy for S[] than S. | |
4801 // This usually only matters when D is an interface. | |
4802 Node* not_subtype_ctrl = gen_subtype_check(src_klass, dest_klass); | |
4803 // Plug failing path into checked_oop_disjoint_arraycopy | |
4804 if (not_subtype_ctrl != top()) { | |
4805 PreserveJVMState pjvms(this); | |
4806 set_control(not_subtype_ctrl); | |
4807 // (At this point we can assume disjoint_bases, since types differ.) | |
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4808 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); |
0 | 4809 Node* p1 = basic_plus_adr(dest_klass, ek_offset); |
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|
4810 Node* n1 = LoadKlassNode::make(_gvn, immutable_memory(), p1, TypeRawPtr::BOTTOM); |
0 | 4811 Node* dest_elem_klass = _gvn.transform(n1); |
4812 Node* cv = generate_checkcast_arraycopy(adr_type, | |
4813 dest_elem_klass, | |
4814 src, src_offset, dest, dest_offset, | |
2324 | 4815 ConvI2X(copy_length), dest_uninitialized); |
0 | 4816 if (cv == NULL) cv = intcon(-1); // failure (no stub available) |
4817 checked_control = control(); | |
4818 checked_i_o = i_o(); | |
4819 checked_mem = memory(adr_type); | |
4820 checked_value = cv; | |
4821 } | |
4822 // At this point we know we do not need type checks on oop stores. | |
4823 | |
4824 // Let's see if we need card marks: | |
4825 if (alloc != NULL && use_ReduceInitialCardMarks()) { | |
4826 // If we do not need card marks, copy using the jint or jlong stub. | |
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4827 copy_type = LP64_ONLY(UseCompressedOops ? T_INT : T_LONG) NOT_LP64(T_INT); |
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|
4828 assert(type2aelembytes(basic_elem_type) == type2aelembytes(copy_type), |
0 | 4829 "sizes agree"); |
4830 } | |
4831 } | |
4832 | |
4833 if (!stopped()) { | |
4834 // Generate the fast path, if possible. | |
4835 PreserveJVMState pjvms(this); | |
4836 generate_unchecked_arraycopy(adr_type, copy_type, disjoint_bases, | |
4837 src, src_offset, dest, dest_offset, | |
2324 | 4838 ConvI2X(copy_length), dest_uninitialized); |
0 | 4839 |
4840 // Present the results of the fast call. | |
4841 result_region->init_req(fast_path, control()); | |
4842 result_i_o ->init_req(fast_path, i_o()); | |
4843 result_memory->init_req(fast_path, memory(adr_type)); | |
4844 } | |
4845 | |
4846 // Here are all the slow paths up to this point, in one bundle: | |
4847 slow_control = top(); | |
4848 if (slow_region != NULL) | |
4849 slow_control = _gvn.transform(slow_region); | |
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|
4850 DEBUG_ONLY(slow_region = (RegionNode*)badAddress); |
0 | 4851 |
4852 set_control(checked_control); | |
4853 if (!stopped()) { | |
4854 // Clean up after the checked call. | |
4855 // The returned value is either 0 or -1^K, | |
4856 // where K = number of partially transferred array elements. | |
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|
4857 Node* cmp = _gvn.transform( new(C) CmpINode(checked_value, intcon(0)) ); |
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4858 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::eq) ); |
0 | 4859 IfNode* iff = create_and_map_if(control(), bol, PROB_MAX, COUNT_UNKNOWN); |
4860 | |
4861 // If it is 0, we are done, so transfer to the end. | |
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|
4862 Node* checks_done = _gvn.transform( new(C) IfTrueNode(iff) ); |
0 | 4863 result_region->init_req(checked_path, checks_done); |
4864 result_i_o ->init_req(checked_path, checked_i_o); | |
4865 result_memory->init_req(checked_path, checked_mem); | |
4866 | |
4867 // If it is not zero, merge into the slow call. | |
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|
4868 set_control( _gvn.transform( new(C) IfFalseNode(iff) )); |
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4869 RegionNode* slow_reg2 = new(C) RegionNode(3); |
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4870 PhiNode* slow_i_o2 = new(C) PhiNode(slow_reg2, Type::ABIO); |
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4871 PhiNode* slow_mem2 = new(C) PhiNode(slow_reg2, Type::MEMORY, adr_type); |
0 | 4872 record_for_igvn(slow_reg2); |
4873 slow_reg2 ->init_req(1, slow_control); | |
4874 slow_i_o2 ->init_req(1, slow_i_o); | |
4875 slow_mem2 ->init_req(1, slow_mem); | |
4876 slow_reg2 ->init_req(2, control()); | |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
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diff
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|
4877 slow_i_o2 ->init_req(2, checked_i_o); |
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|
4878 slow_mem2 ->init_req(2, checked_mem); |
0 | 4879 |
4880 slow_control = _gvn.transform(slow_reg2); | |
4881 slow_i_o = _gvn.transform(slow_i_o2); | |
4882 slow_mem = _gvn.transform(slow_mem2); | |
4883 | |
4884 if (alloc != NULL) { | |
4885 // We'll restart from the very beginning, after zeroing the whole thing. | |
4886 // This can cause double writes, but that's OK since dest is brand new. | |
4887 // So we ignore the low 31 bits of the value returned from the stub. | |
4888 } else { | |
4889 // We must continue the copy exactly where it failed, or else | |
4890 // another thread might see the wrong number of writes to dest. | |
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|
4891 Node* checked_offset = _gvn.transform( new(C) XorINode(checked_value, intcon(-1)) ); |
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|
4892 Node* slow_offset = new(C) PhiNode(slow_reg2, TypeInt::INT); |
0 | 4893 slow_offset->init_req(1, intcon(0)); |
4894 slow_offset->init_req(2, checked_offset); | |
4895 slow_offset = _gvn.transform(slow_offset); | |
4896 | |
4897 // Adjust the arguments by the conditionally incoming offset. | |
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4898 Node* src_off_plus = _gvn.transform( new(C) AddINode(src_offset, slow_offset) ); |
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|
4899 Node* dest_off_plus = _gvn.transform( new(C) AddINode(dest_offset, slow_offset) ); |
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4900 Node* length_minus = _gvn.transform( new(C) SubINode(copy_length, slow_offset) ); |
0 | 4901 |
4902 // Tweak the node variables to adjust the code produced below: | |
4903 src_offset = src_off_plus; | |
4904 dest_offset = dest_off_plus; | |
4905 copy_length = length_minus; | |
4906 } | |
4907 } | |
4908 | |
4909 set_control(slow_control); | |
4910 if (!stopped()) { | |
4911 // Generate the slow path, if needed. | |
4912 PreserveJVMState pjvms(this); // replace_in_map may trash the map | |
4913 | |
4914 set_memory(slow_mem, adr_type); | |
4915 set_i_o(slow_i_o); | |
4916 | |
2324 | 4917 if (dest_uninitialized) { |
0 | 4918 generate_clear_array(adr_type, dest, basic_elem_type, |
4919 intcon(0), NULL, | |
4920 alloc->in(AllocateNode::AllocSize)); | |
4921 } | |
4922 | |
4923 generate_slow_arraycopy(adr_type, | |
4924 src, src_offset, dest, dest_offset, | |
2324 | 4925 copy_length, /*dest_uninitialized*/false); |
0 | 4926 |
4927 result_region->init_req(slow_call_path, control()); | |
4928 result_i_o ->init_req(slow_call_path, i_o()); | |
4929 result_memory->init_req(slow_call_path, memory(adr_type)); | |
4930 } | |
4931 | |
4932 // Remove unused edges. | |
4933 for (uint i = 1; i < result_region->req(); i++) { | |
4934 if (result_region->in(i) == NULL) | |
4935 result_region->init_req(i, top()); | |
4936 } | |
4937 | |
4938 // Finished; return the combined state. | |
4939 set_control( _gvn.transform(result_region) ); | |
4940 set_i_o( _gvn.transform(result_i_o) ); | |
4941 set_memory( _gvn.transform(result_memory), adr_type ); | |
4942 | |
4943 // The memory edges above are precise in order to model effects around | |
605 | 4944 // array copies accurately to allow value numbering of field loads around |
0 | 4945 // arraycopy. Such field loads, both before and after, are common in Java |
4946 // collections and similar classes involving header/array data structures. | |
4947 // | |
4948 // But with low number of register or when some registers are used or killed | |
4949 // by arraycopy calls it causes registers spilling on stack. See 6544710. | |
4950 // The next memory barrier is added to avoid it. If the arraycopy can be | |
4951 // optimized away (which it can, sometimes) then we can manually remove | |
4952 // the membar also. | |
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diff
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|
4953 // |
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
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diff
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|
4954 // 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
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4762
diff
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|
4955 if (alloc != NULL) { |
1dc233a8c7fe
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diff
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|
4956 // Do not let stores that initialize this object be reordered with |
1dc233a8c7fe
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diff
changeset
|
4957 // a subsequent store that would make this object accessible by |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
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diff
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|
4958 // other threads. |
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diff
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|
4959 // Record what AllocateNode this StoreStore protects so that |
1dc233a8c7fe
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diff
changeset
|
4960 // escape analysis can go from the MemBarStoreStoreNode to the |
1dc233a8c7fe
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diff
changeset
|
4961 // AllocateNode and eliminate the MemBarStoreStoreNode if possible |
1dc233a8c7fe
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|
4962 // based on the escape status of the AllocateNode. |
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diff
changeset
|
4963 insert_mem_bar(Op_MemBarStoreStore, alloc->proj_out(AllocateNode::RawAddress)); |
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|
4964 } else if (InsertMemBarAfterArraycopy) |
0 | 4965 insert_mem_bar(Op_MemBarCPUOrder); |
4966 } | |
4967 | |
4968 | |
4969 // Helper function which determines if an arraycopy immediately follows | |
4970 // an allocation, with no intervening tests or other escapes for the object. | |
4971 AllocateArrayNode* | |
4972 LibraryCallKit::tightly_coupled_allocation(Node* ptr, | |
4973 RegionNode* slow_region) { | |
4974 if (stopped()) return NULL; // no fast path | |
4975 if (C->AliasLevel() == 0) return NULL; // no MergeMems around | |
4976 | |
4977 AllocateArrayNode* alloc = AllocateArrayNode::Ideal_array_allocation(ptr, &_gvn); | |
4978 if (alloc == NULL) return NULL; | |
4979 | |
4980 Node* rawmem = memory(Compile::AliasIdxRaw); | |
4981 // Is the allocation's memory state untouched? | |
4982 if (!(rawmem->is_Proj() && rawmem->in(0)->is_Initialize())) { | |
4983 // Bail out if there have been raw-memory effects since the allocation. | |
4984 // (Example: There might have been a call or safepoint.) | |
4985 return NULL; | |
4986 } | |
4987 rawmem = rawmem->in(0)->as_Initialize()->memory(Compile::AliasIdxRaw); | |
4988 if (!(rawmem->is_Proj() && rawmem->in(0) == alloc)) { | |
4989 return NULL; | |
4990 } | |
4991 | |
4992 // There must be no unexpected observers of this allocation. | |
4993 for (DUIterator_Fast imax, i = ptr->fast_outs(imax); i < imax; i++) { | |
4994 Node* obs = ptr->fast_out(i); | |
4995 if (obs != this->map()) { | |
4996 return NULL; | |
4997 } | |
4998 } | |
4999 | |
5000 // This arraycopy must unconditionally follow the allocation of the ptr. | |
5001 Node* alloc_ctl = ptr->in(0); | |
5002 assert(just_allocated_object(alloc_ctl) == ptr, "most recent allo"); | |
5003 | |
5004 Node* ctl = control(); | |
5005 while (ctl != alloc_ctl) { | |
5006 // There may be guards which feed into the slow_region. | |
5007 // Any other control flow means that we might not get a chance | |
5008 // to finish initializing the allocated object. | |
5009 if ((ctl->is_IfFalse() || ctl->is_IfTrue()) && ctl->in(0)->is_If()) { | |
5010 IfNode* iff = ctl->in(0)->as_If(); | |
5011 Node* not_ctl = iff->proj_out(1 - ctl->as_Proj()->_con); | |
5012 assert(not_ctl != NULL && not_ctl != ctl, "found alternate"); | |
5013 if (slow_region != NULL && slow_region->find_edge(not_ctl) >= 1) { | |
5014 ctl = iff->in(0); // This test feeds the known slow_region. | |
5015 continue; | |
5016 } | |
5017 // One more try: Various low-level checks bottom out in | |
5018 // uncommon traps. If the debug-info of the trap omits | |
5019 // any reference to the allocation, as we've already | |
5020 // observed, then there can be no objection to the trap. | |
5021 bool found_trap = false; | |
5022 for (DUIterator_Fast jmax, j = not_ctl->fast_outs(jmax); j < jmax; j++) { | |
5023 Node* obs = not_ctl->fast_out(j); | |
5024 if (obs->in(0) == not_ctl && obs->is_Call() && | |
1748 | 5025 (obs->as_Call()->entry_point() == SharedRuntime::uncommon_trap_blob()->entry_point())) { |
0 | 5026 found_trap = true; break; |
5027 } | |
5028 } | |
5029 if (found_trap) { | |
5030 ctl = iff->in(0); // This test feeds a harmless uncommon trap. | |
5031 continue; | |
5032 } | |
5033 } | |
5034 return NULL; | |
5035 } | |
5036 | |
5037 // If we get this far, we have an allocation which immediately | |
5038 // precedes the arraycopy, and we can take over zeroing the new object. | |
5039 // The arraycopy will finish the initialization, and provide | |
5040 // a new control state to which we will anchor the destination pointer. | |
5041 | |
5042 return alloc; | |
5043 } | |
5044 | |
5045 // Helper for initialization of arrays, creating a ClearArray. | |
5046 // It writes zero bits in [start..end), within the body of an array object. | |
5047 // The memory effects are all chained onto the 'adr_type' alias category. | |
5048 // | |
5049 // Since the object is otherwise uninitialized, we are free | |
5050 // to put a little "slop" around the edges of the cleared area, | |
5051 // as long as it does not go back into the array's header, | |
5052 // or beyond the array end within the heap. | |
5053 // | |
5054 // The lower edge can be rounded down to the nearest jint and the | |
5055 // upper edge can be rounded up to the nearest MinObjAlignmentInBytes. | |
5056 // | |
5057 // Arguments: | |
5058 // adr_type memory slice where writes are generated | |
5059 // dest oop of the destination array | |
5060 // basic_elem_type element type of the destination | |
5061 // slice_idx array index of first element to store | |
5062 // slice_len number of elements to store (or NULL) | |
5063 // dest_size total size in bytes of the array object | |
5064 // | |
5065 // Exactly one of slice_len or dest_size must be non-NULL. | |
5066 // If dest_size is non-NULL, zeroing extends to the end of the object. | |
5067 // If slice_len is non-NULL, the slice_idx value must be a constant. | |
5068 void | |
5069 LibraryCallKit::generate_clear_array(const TypePtr* adr_type, | |
5070 Node* dest, | |
5071 BasicType basic_elem_type, | |
5072 Node* slice_idx, | |
5073 Node* slice_len, | |
5074 Node* dest_size) { | |
5075 // one or the other but not both of slice_len and dest_size: | |
5076 assert((slice_len != NULL? 1: 0) + (dest_size != NULL? 1: 0) == 1, ""); | |
5077 if (slice_len == NULL) slice_len = top(); | |
5078 if (dest_size == NULL) dest_size = top(); | |
5079 | |
5080 // operate on this memory slice: | |
5081 Node* mem = memory(adr_type); // memory slice to operate on | |
5082 | |
5083 // scaling and rounding of indexes: | |
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5084 int scale = exact_log2(type2aelembytes(basic_elem_type)); |
0 | 5085 int abase = arrayOopDesc::base_offset_in_bytes(basic_elem_type); |
5086 int clear_low = (-1 << scale) & (BytesPerInt - 1); | |
5087 int bump_bit = (-1 << scale) & BytesPerInt; | |
5088 | |
5089 // determine constant starts and ends | |
5090 const intptr_t BIG_NEG = -128; | |
5091 assert(BIG_NEG + 2*abase < 0, "neg enough"); | |
5092 intptr_t slice_idx_con = (intptr_t) find_int_con(slice_idx, BIG_NEG); | |
5093 intptr_t slice_len_con = (intptr_t) find_int_con(slice_len, BIG_NEG); | |
5094 if (slice_len_con == 0) { | |
5095 return; // nothing to do here | |
5096 } | |
5097 intptr_t start_con = (abase + (slice_idx_con << scale)) & ~clear_low; | |
5098 intptr_t end_con = find_intptr_t_con(dest_size, -1); | |
5099 if (slice_idx_con >= 0 && slice_len_con >= 0) { | |
5100 assert(end_con < 0, "not two cons"); | |
5101 end_con = round_to(abase + ((slice_idx_con + slice_len_con) << scale), | |
5102 BytesPerLong); | |
5103 } | |
5104 | |
5105 if (start_con >= 0 && end_con >= 0) { | |
5106 // Constant start and end. Simple. | |
5107 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5108 start_con, end_con, &_gvn); | |
5109 } else if (start_con >= 0 && dest_size != top()) { | |
5110 // Constant start, pre-rounded end after the tail of the array. | |
5111 Node* end = dest_size; | |
5112 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5113 start_con, end, &_gvn); | |
5114 } else if (start_con >= 0 && slice_len != top()) { | |
5115 // Constant start, non-constant end. End needs rounding up. | |
5116 // End offset = round_up(abase + ((slice_idx_con + slice_len) << scale), 8) | |
5117 intptr_t end_base = abase + (slice_idx_con << scale); | |
5118 int end_round = (-1 << scale) & (BytesPerLong - 1); | |
5119 Node* end = ConvI2X(slice_len); | |
5120 if (scale != 0) | |
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|
5121 end = _gvn.transform( new(C) LShiftXNode(end, intcon(scale) )); |
0 | 5122 end_base += end_round; |
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5123 end = _gvn.transform( new(C) AddXNode(end, MakeConX(end_base)) ); |
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5124 end = _gvn.transform( new(C) AndXNode(end, MakeConX(~end_round)) ); |
0 | 5125 mem = ClearArrayNode::clear_memory(control(), mem, dest, |
5126 start_con, end, &_gvn); | |
5127 } else if (start_con < 0 && dest_size != top()) { | |
5128 // Non-constant start, pre-rounded end after the tail of the array. | |
5129 // This is almost certainly a "round-to-end" operation. | |
5130 Node* start = slice_idx; | |
5131 start = ConvI2X(start); | |
5132 if (scale != 0) | |
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5133 start = _gvn.transform( new(C) LShiftXNode( start, intcon(scale) )); |
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|
5134 start = _gvn.transform( new(C) AddXNode(start, MakeConX(abase)) ); |
0 | 5135 if ((bump_bit | clear_low) != 0) { |
5136 int to_clear = (bump_bit | clear_low); | |
5137 // Align up mod 8, then store a jint zero unconditionally | |
5138 // just before the mod-8 boundary. | |
113
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5139 if (((abase + bump_bit) & ~to_clear) - bump_bit |
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5140 < arrayOopDesc::length_offset_in_bytes() + BytesPerInt) { |
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diff
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|
5141 bump_bit = 0; |
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5142 assert((abase & to_clear) == 0, "array base must be long-aligned"); |
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6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
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|
5143 } else { |
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diff
changeset
|
5144 // Bump 'start' up to (or past) the next jint boundary: |
6804
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5145 start = _gvn.transform( new(C) AddXNode(start, MakeConX(bump_bit)) ); |
113
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|
5146 assert((abase & clear_low) == 0, "array base must be int-aligned"); |
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|
5147 } |
0 | 5148 // Round bumped 'start' down to jlong boundary in body of array. |
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5149 start = _gvn.transform( new(C) AndXNode(start, MakeConX(~to_clear)) ); |
113
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5150 if (bump_bit != 0) { |
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|
5151 // Store a zero to the immediately preceding jint: |
6804
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5152 Node* x1 = _gvn.transform( new(C) AddXNode(start, MakeConX(-bump_bit)) ); |
113
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5153 Node* p1 = basic_plus_adr(dest, x1); |
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5154 mem = StoreNode::make(_gvn, control(), mem, p1, adr_type, intcon(0), T_INT); |
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5155 mem = _gvn.transform(mem); |
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5156 } |
0 | 5157 } |
5158 Node* end = dest_size; // pre-rounded | |
5159 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5160 start, end, &_gvn); | |
5161 } else { | |
5162 // Non-constant start, unrounded non-constant end. | |
5163 // (Nobody zeroes a random midsection of an array using this routine.) | |
5164 ShouldNotReachHere(); // fix caller | |
5165 } | |
5166 | |
5167 // Done. | |
5168 set_memory(mem, adr_type); | |
5169 } | |
5170 | |
5171 | |
5172 bool | |
5173 LibraryCallKit::generate_block_arraycopy(const TypePtr* adr_type, | |
5174 BasicType basic_elem_type, | |
5175 AllocateNode* alloc, | |
5176 Node* src, Node* src_offset, | |
5177 Node* dest, Node* dest_offset, | |
2324 | 5178 Node* dest_size, bool dest_uninitialized) { |
0 | 5179 // See if there is an advantage from block transfer. |
29
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diff
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|
5180 int scale = exact_log2(type2aelembytes(basic_elem_type)); |
0 | 5181 if (scale >= LogBytesPerLong) |
5182 return false; // it is already a block transfer | |
5183 | |
5184 // Look at the alignment of the starting offsets. | |
5185 int abase = arrayOopDesc::base_offset_in_bytes(basic_elem_type); | |
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|
5186 |
b2cb497dec28
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|
5187 intptr_t src_off_con = (intptr_t) find_int_con(src_offset, -1); |
b2cb497dec28
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|
5188 intptr_t dest_off_con = (intptr_t) find_int_con(dest_offset, -1); |
b2cb497dec28
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|
5189 if (src_off_con < 0 || dest_off_con < 0) |
0 | 5190 // At present, we can only understand constants. |
5191 return false; | |
5192 | |
3742
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|
5193 intptr_t src_off = abase + (src_off_con << scale); |
b2cb497dec28
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|
5194 intptr_t dest_off = abase + (dest_off_con << scale); |
b2cb497dec28
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|
5195 |
0 | 5196 if (((src_off | dest_off) & (BytesPerLong-1)) != 0) { |
5197 // Non-aligned; too bad. | |
5198 // One more chance: Pick off an initial 32-bit word. | |
5199 // This is a common case, since abase can be odd mod 8. | |
5200 if (((src_off | dest_off) & (BytesPerLong-1)) == BytesPerInt && | |
5201 ((src_off ^ dest_off) & (BytesPerLong-1)) == 0) { | |
5202 Node* sptr = basic_plus_adr(src, src_off); | |
5203 Node* dptr = basic_plus_adr(dest, dest_off); | |
5204 Node* sval = make_load(control(), sptr, TypeInt::INT, T_INT, adr_type); | |
5205 store_to_memory(control(), dptr, sval, T_INT, adr_type); | |
5206 src_off += BytesPerInt; | |
5207 dest_off += BytesPerInt; | |
5208 } else { | |
5209 return false; | |
5210 } | |
5211 } | |
5212 assert(src_off % BytesPerLong == 0, ""); | |
5213 assert(dest_off % BytesPerLong == 0, ""); | |
5214 | |
5215 // Do this copy by giant steps. | |
5216 Node* sptr = basic_plus_adr(src, src_off); | |
5217 Node* dptr = basic_plus_adr(dest, dest_off); | |
5218 Node* countx = dest_size; | |
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diff
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|
5219 countx = _gvn.transform( new (C) SubXNode(countx, MakeConX(dest_off)) ); |
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kvn
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|
5220 countx = _gvn.transform( new (C) URShiftXNode(countx, intcon(LogBytesPerLong)) ); |
0 | 5221 |
5222 bool disjoint_bases = true; // since alloc != NULL | |
5223 generate_unchecked_arraycopy(adr_type, T_LONG, disjoint_bases, | |
2324 | 5224 sptr, NULL, dptr, NULL, countx, dest_uninitialized); |
0 | 5225 |
5226 return true; | |
5227 } | |
5228 | |
5229 | |
5230 // Helper function; generates code for the slow case. | |
5231 // We make a call to a runtime method which emulates the native method, | |
5232 // but without the native wrapper overhead. | |
5233 void | |
5234 LibraryCallKit::generate_slow_arraycopy(const TypePtr* adr_type, | |
5235 Node* src, Node* src_offset, | |
5236 Node* dest, Node* dest_offset, | |
2324 | 5237 Node* copy_length, bool dest_uninitialized) { |
5238 assert(!dest_uninitialized, "Invariant"); | |
0 | 5239 Node* call = make_runtime_call(RC_NO_LEAF | RC_UNCOMMON, |
5240 OptoRuntime::slow_arraycopy_Type(), | |
5241 OptoRuntime::slow_arraycopy_Java(), | |
5242 "slow_arraycopy", adr_type, | |
5243 src, src_offset, dest, dest_offset, | |
5244 copy_length); | |
5245 | |
5246 // Handle exceptions thrown by this fellow: | |
5247 make_slow_call_ex(call, env()->Throwable_klass(), false); | |
5248 } | |
5249 | |
5250 // Helper function; generates code for cases requiring runtime checks. | |
5251 Node* | |
5252 LibraryCallKit::generate_checkcast_arraycopy(const TypePtr* adr_type, | |
5253 Node* dest_elem_klass, | |
5254 Node* src, Node* src_offset, | |
5255 Node* dest, Node* dest_offset, | |
2324 | 5256 Node* copy_length, bool dest_uninitialized) { |
0 | 5257 if (stopped()) return NULL; |
5258 | |
2324 | 5259 address copyfunc_addr = StubRoutines::checkcast_arraycopy(dest_uninitialized); |
0 | 5260 if (copyfunc_addr == NULL) { // Stub was not generated, go slow path. |
5261 return NULL; | |
5262 } | |
5263 | |
5264 // Pick out the parameters required to perform a store-check | |
5265 // for the target array. This is an optimistic check. It will | |
5266 // look in each non-null element's class, at the desired klass's | |
5267 // super_check_offset, for the desired klass. | |
4762
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7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
stefank
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3961
diff
changeset
|
5268 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
0 | 5269 Node* p3 = basic_plus_adr(dest_elem_klass, sco_offset); |
6804
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kvn
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diff
changeset
|
5270 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
|
5271 Node* check_offset = ConvI2X(_gvn.transform(n3)); |
0 | 5272 Node* check_value = dest_elem_klass; |
5273 | |
5274 Node* src_start = array_element_address(src, src_offset, T_OBJECT); | |
5275 Node* dest_start = array_element_address(dest, dest_offset, T_OBJECT); | |
5276 | |
5277 // (We know the arrays are never conjoint, because their types differ.) | |
5278 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5279 OptoRuntime::checkcast_arraycopy_Type(), | |
5280 copyfunc_addr, "checkcast_arraycopy", adr_type, | |
5281 // five arguments, of which two are | |
5282 // intptr_t (jlong in LP64) | |
5283 src_start, dest_start, | |
5284 copy_length XTOP, | |
5285 check_offset XTOP, | |
5286 check_value); | |
5287 | |
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kvn
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6795
diff
changeset
|
5288 return _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
0 | 5289 } |
5290 | |
5291 | |
5292 // Helper function; generates code for cases requiring runtime checks. | |
5293 Node* | |
5294 LibraryCallKit::generate_generic_arraycopy(const TypePtr* adr_type, | |
5295 Node* src, Node* src_offset, | |
5296 Node* dest, Node* dest_offset, | |
2324 | 5297 Node* copy_length, bool dest_uninitialized) { |
5298 assert(!dest_uninitialized, "Invariant"); | |
0 | 5299 if (stopped()) return NULL; |
5300 address copyfunc_addr = StubRoutines::generic_arraycopy(); | |
5301 if (copyfunc_addr == NULL) { // Stub was not generated, go slow path. | |
5302 return NULL; | |
5303 } | |
5304 | |
5305 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5306 OptoRuntime::generic_arraycopy_Type(), | |
5307 copyfunc_addr, "generic_arraycopy", adr_type, | |
5308 src, src_offset, dest, dest_offset, copy_length); | |
5309 | |
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kvn
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diff
changeset
|
5310 return _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
0 | 5311 } |
5312 | |
5313 // Helper function; generates the fast out-of-line call to an arraycopy stub. | |
5314 void | |
5315 LibraryCallKit::generate_unchecked_arraycopy(const TypePtr* adr_type, | |
5316 BasicType basic_elem_type, | |
5317 bool disjoint_bases, | |
5318 Node* src, Node* src_offset, | |
5319 Node* dest, Node* dest_offset, | |
2324 | 5320 Node* copy_length, bool dest_uninitialized) { |
0 | 5321 if (stopped()) return; // nothing to do |
5322 | |
5323 Node* src_start = src; | |
5324 Node* dest_start = dest; | |
5325 if (src_offset != NULL || dest_offset != NULL) { | |
5326 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5327 src_start = array_element_address(src, src_offset, basic_elem_type); | |
5328 dest_start = array_element_address(dest, dest_offset, basic_elem_type); | |
5329 } | |
5330 | |
5331 // Figure out which arraycopy runtime method to call. | |
5332 const char* copyfunc_name = "arraycopy"; | |
5333 address copyfunc_addr = | |
5334 basictype2arraycopy(basic_elem_type, src_offset, dest_offset, | |
2324 | 5335 disjoint_bases, copyfunc_name, dest_uninitialized); |
0 | 5336 |
5337 // Call it. Note that the count_ix value is not scaled to a byte-size. | |
5338 make_runtime_call(RC_LEAF|RC_NO_FP, | |
5339 OptoRuntime::fast_arraycopy_Type(), | |
5340 copyfunc_addr, copyfunc_name, adr_type, | |
5341 src_start, dest_start, copy_length XTOP); | |
5342 } | |
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5343 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5344 //----------------------------inline_reference_get---------------------------- |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
5345 // public T java.lang.ref.Reference.get(); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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2385
diff
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|
5346 bool LibraryCallKit::inline_reference_get() { |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
5347 const int referent_offset = java_lang_ref_Reference::referent_offset; |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
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|
5348 guarantee(referent_offset > 0, "should have already been set"); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
5349 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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diff
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|
5350 // Get the argument: |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
5351 Node* reference_obj = null_check_receiver(); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5352 if (stopped()) return true; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5353 |
7194
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twisti
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diff
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|
5354 Node* adr = basic_plus_adr(reference_obj, reference_obj, referent_offset); |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5355 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5356 ciInstanceKlass* klass = env()->Object_klass(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5357 const TypeOopPtr* object_type = TypeOopPtr::make_from_klass(klass); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5358 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5359 Node* no_ctrl = NULL; |
7194
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twisti
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diff
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|
5360 Node* result = make_load(no_ctrl, adr, object_type, T_OBJECT); |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5361 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5362 // 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
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diff
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|
5363 pre_barrier(false /* do_load */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5364 control(), |
3258
edd9b016deb6
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3255
diff
changeset
|
5365 NULL /* obj */, NULL /* adr */, max_juint /* alias_idx */, NULL /* val */, NULL /* val_type */, |
3249
e1162778c1c8
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|
5366 result /* pre_val */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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diff
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|
5367 T_OBJECT); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
5368 |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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6266
diff
changeset
|
5369 // Add memory barrier to prevent commoning reads from this field |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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6266
diff
changeset
|
5370 // 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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diff
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|
5371 insert_mem_bar(Op_MemBarCPUOrder); |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
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|
5372 |
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5373 set_result(result); |
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5374 return true; |
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5375 } |
6894 | 5376 |
5377 | |
5378 Node * LibraryCallKit::load_field_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, | |
5379 bool is_exact=true, bool is_static=false) { | |
5380 | |
5381 const TypeInstPtr* tinst = _gvn.type(fromObj)->isa_instptr(); | |
5382 assert(tinst != NULL, "obj is null"); | |
5383 assert(tinst->klass()->is_loaded(), "obj is not loaded"); | |
5384 assert(!is_exact || tinst->klass_is_exact(), "klass not exact"); | |
5385 | |
5386 ciField* field = tinst->klass()->as_instance_klass()->get_field_by_name(ciSymbol::make(fieldName), | |
5387 ciSymbol::make(fieldTypeString), | |
5388 is_static); | |
5389 if (field == NULL) return (Node *) NULL; | |
5390 assert (field != NULL, "undefined field"); | |
5391 | |
5392 // Next code copied from Parse::do_get_xxx(): | |
5393 | |
5394 // Compute address and memory type. | |
5395 int offset = field->offset_in_bytes(); | |
5396 bool is_vol = field->is_volatile(); | |
5397 ciType* field_klass = field->type(); | |
5398 assert(field_klass->is_loaded(), "should be loaded"); | |
5399 const TypePtr* adr_type = C->alias_type(field)->adr_type(); | |
5400 Node *adr = basic_plus_adr(fromObj, fromObj, offset); | |
5401 BasicType bt = field->layout_type(); | |
5402 | |
5403 // Build the resultant type of the load | |
5404 const Type *type = TypeOopPtr::make_from_klass(field_klass->as_klass()); | |
5405 | |
5406 // Build the load. | |
5407 Node* loadedField = make_load(NULL, adr, type, bt, adr_type, is_vol); | |
5408 return loadedField; | |
5409 } | |
5410 | |
5411 | |
5412 //------------------------------inline_aescrypt_Block----------------------- | |
5413 bool LibraryCallKit::inline_aescrypt_Block(vmIntrinsics::ID id) { | |
5414 address stubAddr; | |
5415 const char *stubName; | |
5416 assert(UseAES, "need AES instruction support"); | |
5417 | |
5418 switch(id) { | |
5419 case vmIntrinsics::_aescrypt_encryptBlock: | |
5420 stubAddr = StubRoutines::aescrypt_encryptBlock(); | |
5421 stubName = "aescrypt_encryptBlock"; | |
5422 break; | |
5423 case vmIntrinsics::_aescrypt_decryptBlock: | |
5424 stubAddr = StubRoutines::aescrypt_decryptBlock(); | |
5425 stubName = "aescrypt_decryptBlock"; | |
5426 break; | |
5427 } | |
5428 if (stubAddr == NULL) return false; | |
5429 | |
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5430 Node* aescrypt_object = argument(0); |
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5431 Node* src = argument(1); |
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5432 Node* src_offset = argument(2); |
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5433 Node* dest = argument(3); |
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5434 Node* dest_offset = argument(4); |
6894 | 5435 |
5436 // (1) src and dest are arrays. | |
5437 const Type* src_type = src->Value(&_gvn); | |
5438 const Type* dest_type = dest->Value(&_gvn); | |
5439 const TypeAryPtr* top_src = src_type->isa_aryptr(); | |
5440 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); | |
5441 assert (top_src != NULL && top_src->klass() != NULL && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); | |
5442 | |
5443 // for the quick and dirty code we will skip all the checks. | |
5444 // we are just trying to get the call to be generated. | |
5445 Node* src_start = src; | |
5446 Node* dest_start = dest; | |
5447 if (src_offset != NULL || dest_offset != NULL) { | |
5448 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5449 src_start = array_element_address(src, src_offset, T_BYTE); | |
5450 dest_start = array_element_address(dest, dest_offset, T_BYTE); | |
5451 } | |
5452 | |
5453 // now need to get the start of its expanded key array | |
5454 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java | |
5455 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); | |
5456 if (k_start == NULL) return false; | |
5457 | |
5458 // Call the stub. | |
5459 make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::aescrypt_block_Type(), | |
5460 stubAddr, stubName, TypePtr::BOTTOM, | |
5461 src_start, dest_start, k_start); | |
5462 | |
5463 return true; | |
5464 } | |
5465 | |
5466 //------------------------------inline_cipherBlockChaining_AESCrypt----------------------- | |
5467 bool LibraryCallKit::inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id) { | |
5468 address stubAddr; | |
5469 const char *stubName; | |
5470 | |
5471 assert(UseAES, "need AES instruction support"); | |
5472 | |
5473 switch(id) { | |
5474 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
5475 stubAddr = StubRoutines::cipherBlockChaining_encryptAESCrypt(); | |
5476 stubName = "cipherBlockChaining_encryptAESCrypt"; | |
5477 break; | |
5478 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
5479 stubAddr = StubRoutines::cipherBlockChaining_decryptAESCrypt(); | |
5480 stubName = "cipherBlockChaining_decryptAESCrypt"; | |
5481 break; | |
5482 } | |
5483 if (stubAddr == NULL) return false; | |
5484 | |
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5485 Node* cipherBlockChaining_object = argument(0); |
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5486 Node* src = argument(1); |
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5487 Node* src_offset = argument(2); |
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5488 Node* len = argument(3); |
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5489 Node* dest = argument(4); |
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5490 Node* dest_offset = argument(5); |
6894 | 5491 |
5492 // (1) src and dest are arrays. | |
5493 const Type* src_type = src->Value(&_gvn); | |
5494 const Type* dest_type = dest->Value(&_gvn); | |
5495 const TypeAryPtr* top_src = src_type->isa_aryptr(); | |
5496 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); | |
5497 assert (top_src != NULL && top_src->klass() != NULL | |
5498 && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); | |
5499 | |
5500 // checks are the responsibility of the caller | |
5501 Node* src_start = src; | |
5502 Node* dest_start = dest; | |
5503 if (src_offset != NULL || dest_offset != NULL) { | |
5504 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5505 src_start = array_element_address(src, src_offset, T_BYTE); | |
5506 dest_start = array_element_address(dest, dest_offset, T_BYTE); | |
5507 } | |
5508 | |
5509 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object | |
5510 // (because of the predicated logic executed earlier). | |
5511 // so we cast it here safely. | |
5512 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java | |
5513 | |
5514 Node* embeddedCipherObj = load_field_from_object(cipherBlockChaining_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); | |
5515 if (embeddedCipherObj == NULL) return false; | |
5516 | |
5517 // cast it to what we know it will be at runtime | |
5518 const TypeInstPtr* tinst = _gvn.type(cipherBlockChaining_object)->isa_instptr(); | |
5519 assert(tinst != NULL, "CBC obj is null"); | |
5520 assert(tinst->klass()->is_loaded(), "CBC obj is not loaded"); | |
5521 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); | |
5522 if (!klass_AESCrypt->is_loaded()) return false; | |
5523 | |
5524 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); | |
5525 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt); | |
5526 const TypeOopPtr* xtype = aklass->as_instance_type(); | |
5527 Node* aescrypt_object = new(C) CheckCastPPNode(control(), embeddedCipherObj, xtype); | |
5528 aescrypt_object = _gvn.transform(aescrypt_object); | |
5529 | |
5530 // we need to get the start of the aescrypt_object's expanded key array | |
5531 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); | |
5532 if (k_start == NULL) return false; | |
5533 | |
5534 // similarly, get the start address of the r vector | |
5535 Node* objRvec = load_field_from_object(cipherBlockChaining_object, "r", "[B", /*is_exact*/ false); | |
5536 if (objRvec == NULL) return false; | |
5537 Node* r_start = array_element_address(objRvec, intcon(0), T_BYTE); | |
5538 | |
5539 // Call the stub, passing src_start, dest_start, k_start, r_start and src_len | |
5540 make_runtime_call(RC_LEAF|RC_NO_FP, | |
5541 OptoRuntime::cipherBlockChaining_aescrypt_Type(), | |
5542 stubAddr, stubName, TypePtr::BOTTOM, | |
5543 src_start, dest_start, k_start, r_start, len); | |
5544 | |
5545 // return is void so no result needs to be pushed | |
5546 | |
5547 return true; | |
5548 } | |
5549 | |
5550 //------------------------------get_key_start_from_aescrypt_object----------------------- | |
5551 Node * LibraryCallKit::get_key_start_from_aescrypt_object(Node *aescrypt_object) { | |
5552 Node* objAESCryptKey = load_field_from_object(aescrypt_object, "K", "[I", /*is_exact*/ false); | |
5553 assert (objAESCryptKey != NULL, "wrong version of com.sun.crypto.provider.AESCrypt"); | |
5554 if (objAESCryptKey == NULL) return (Node *) NULL; | |
5555 | |
5556 // now have the array, need to get the start address of the K array | |
5557 Node* k_start = array_element_address(objAESCryptKey, intcon(0), T_INT); | |
5558 return k_start; | |
5559 } | |
5560 | |
5561 //----------------------------inline_cipherBlockChaining_AESCrypt_predicate---------------------------- | |
5562 // Return node representing slow path of predicate check. | |
5563 // the pseudo code we want to emulate with this predicate is: | |
5564 // for encryption: | |
5565 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath | |
5566 // for decryption: | |
5567 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath | |
5568 // note cipher==plain is more conservative than the original java code but that's OK | |
5569 // | |
5570 Node* LibraryCallKit::inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting) { | |
5571 // First, check receiver for NULL since it is virtual method. | |
5572 Node* objCBC = argument(0); | |
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5573 objCBC = null_check(objCBC); |
6894 | 5574 |
5575 if (stopped()) return NULL; // Always NULL | |
5576 | |
5577 // Load embeddedCipher field of CipherBlockChaining object. | |
5578 Node* embeddedCipherObj = load_field_from_object(objCBC, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); | |
5579 | |
5580 // get AESCrypt klass for instanceOf check | |
5581 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point | |
5582 // will have same classloader as CipherBlockChaining object | |
5583 const TypeInstPtr* tinst = _gvn.type(objCBC)->isa_instptr(); | |
5584 assert(tinst != NULL, "CBCobj is null"); | |
5585 assert(tinst->klass()->is_loaded(), "CBCobj is not loaded"); | |
5586 | |
5587 // we want to do an instanceof comparison against the AESCrypt class | |
5588 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); | |
5589 if (!klass_AESCrypt->is_loaded()) { | |
5590 // if AESCrypt is not even loaded, we never take the intrinsic fast path | |
5591 Node* ctrl = control(); | |
5592 set_control(top()); // no regular fast path | |
5593 return ctrl; | |
5594 } | |
5595 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); | |
5596 | |
5597 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt))); | |
5598 Node* cmp_instof = _gvn.transform(new (C) CmpINode(instof, intcon(1))); | |
5599 Node* bool_instof = _gvn.transform(new (C) BoolNode(cmp_instof, BoolTest::ne)); | |
5600 | |
5601 Node* instof_false = generate_guard(bool_instof, NULL, PROB_MIN); | |
5602 | |
5603 // for encryption, we are done | |
5604 if (!decrypting) | |
5605 return instof_false; // even if it is NULL | |
5606 | |
5607 // for decryption, we need to add a further check to avoid | |
5608 // taking the intrinsic path when cipher and plain are the same | |
5609 // see the original java code for why. | |
5610 RegionNode* region = new(C) RegionNode(3); | |
5611 region->init_req(1, instof_false); | |
5612 Node* src = argument(1); | |
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5613 Node* dest = argument(4); |
6894 | 5614 Node* cmp_src_dest = _gvn.transform(new (C) CmpPNode(src, dest)); |
5615 Node* bool_src_dest = _gvn.transform(new (C) BoolNode(cmp_src_dest, BoolTest::eq)); | |
5616 Node* src_dest_conjoint = generate_guard(bool_src_dest, NULL, PROB_MIN); | |
5617 region->init_req(2, src_dest_conjoint); | |
5618 | |
5619 record_for_igvn(region); | |
5620 return _gvn.transform(region); | |
5621 } |