Mercurial > hg > truffle
annotate src/share/vm/opto/library_call.cpp @ 9202:b6629b739a55
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 22 Apr 2013 09:54:57 +0200 |
parents | 16885e702c88 |
children | 124ca22437b1 |
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 // Helper function for inlining native object hash method | |
235 bool inline_native_hashcode(bool is_virtual, bool is_static); | |
236 bool inline_native_getClass(); | |
237 | |
238 // Helper functions for inlining arraycopy | |
239 bool inline_arraycopy(); | |
240 void generate_arraycopy(const TypePtr* adr_type, | |
241 BasicType basic_elem_type, | |
242 Node* src, Node* src_offset, | |
243 Node* dest, Node* dest_offset, | |
244 Node* copy_length, | |
245 bool disjoint_bases = false, | |
246 bool length_never_negative = false, | |
247 RegionNode* slow_region = NULL); | |
248 AllocateArrayNode* tightly_coupled_allocation(Node* ptr, | |
249 RegionNode* slow_region); | |
250 void generate_clear_array(const TypePtr* adr_type, | |
251 Node* dest, | |
252 BasicType basic_elem_type, | |
253 Node* slice_off, | |
254 Node* slice_len, | |
255 Node* slice_end); | |
256 bool generate_block_arraycopy(const TypePtr* adr_type, | |
257 BasicType basic_elem_type, | |
258 AllocateNode* alloc, | |
259 Node* src, Node* src_offset, | |
260 Node* dest, Node* dest_offset, | |
2324 | 261 Node* dest_size, bool dest_uninitialized); |
0 | 262 void generate_slow_arraycopy(const TypePtr* adr_type, |
263 Node* src, Node* src_offset, | |
264 Node* dest, Node* dest_offset, | |
2324 | 265 Node* copy_length, bool dest_uninitialized); |
0 | 266 Node* generate_checkcast_arraycopy(const TypePtr* adr_type, |
267 Node* dest_elem_klass, | |
268 Node* src, Node* src_offset, | |
269 Node* dest, Node* dest_offset, | |
2324 | 270 Node* copy_length, bool dest_uninitialized); |
0 | 271 Node* generate_generic_arraycopy(const TypePtr* adr_type, |
272 Node* src, Node* src_offset, | |
273 Node* dest, Node* dest_offset, | |
2324 | 274 Node* copy_length, bool dest_uninitialized); |
0 | 275 void generate_unchecked_arraycopy(const TypePtr* adr_type, |
276 BasicType basic_elem_type, | |
277 bool disjoint_bases, | |
278 Node* src, Node* src_offset, | |
279 Node* dest, Node* dest_offset, | |
2324 | 280 Node* copy_length, bool dest_uninitialized); |
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281 typedef enum { LS_xadd, LS_xchg, LS_cmpxchg } LoadStoreKind; |
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282 bool inline_unsafe_load_store(BasicType type, LoadStoreKind kind); |
0 | 283 bool inline_unsafe_ordered_store(BasicType type); |
7425 | 284 bool inline_unsafe_fence(vmIntrinsics::ID id); |
0 | 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); | |
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292 bool inline_encodeISOArray(); |
0 | 293 }; |
294 | |
295 | |
296 //---------------------------make_vm_intrinsic---------------------------- | |
297 CallGenerator* Compile::make_vm_intrinsic(ciMethod* m, bool is_virtual) { | |
298 vmIntrinsics::ID id = m->intrinsic_id(); | |
299 assert(id != vmIntrinsics::_none, "must be a VM intrinsic"); | |
300 | |
301 if (DisableIntrinsic[0] != '\0' | |
302 && strstr(DisableIntrinsic, vmIntrinsics::name_at(id)) != NULL) { | |
303 // disabled by a user request on the command line: | |
304 // example: -XX:DisableIntrinsic=_hashCode,_getClass | |
305 return NULL; | |
306 } | |
307 | |
308 if (!m->is_loaded()) { | |
309 // do not attempt to inline unloaded methods | |
310 return NULL; | |
311 } | |
312 | |
313 // Only a few intrinsics implement a virtual dispatch. | |
314 // They are expensive calls which are also frequently overridden. | |
315 if (is_virtual) { | |
316 switch (id) { | |
317 case vmIntrinsics::_hashCode: | |
318 case vmIntrinsics::_clone: | |
319 // OK, Object.hashCode and Object.clone intrinsics come in both flavors | |
320 break; | |
321 default: | |
322 return NULL; | |
323 } | |
324 } | |
325 | |
326 // -XX:-InlineNatives disables nearly all intrinsics: | |
327 if (!InlineNatives) { | |
328 switch (id) { | |
329 case vmIntrinsics::_indexOf: | |
330 case vmIntrinsics::_compareTo: | |
681 | 331 case vmIntrinsics::_equals: |
169
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332 case vmIntrinsics::_equalsC: |
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333 case vmIntrinsics::_getAndAddInt: |
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334 case vmIntrinsics::_getAndAddLong: |
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335 case vmIntrinsics::_getAndSetInt: |
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336 case vmIntrinsics::_getAndSetLong: |
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337 case vmIntrinsics::_getAndSetObject: |
7425 | 338 case vmIntrinsics::_loadFence: |
339 case vmIntrinsics::_storeFence: | |
340 case vmIntrinsics::_fullFence: | |
0 | 341 break; // InlineNatives does not control String.compareTo |
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342 case vmIntrinsics::_Reference_get: |
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343 break; // InlineNatives does not control Reference.get |
0 | 344 default: |
345 return NULL; | |
346 } | |
347 } | |
348 | |
6894 | 349 bool is_predicted = false; |
350 | |
0 | 351 switch (id) { |
352 case vmIntrinsics::_compareTo: | |
353 if (!SpecialStringCompareTo) return NULL; | |
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354 if (!Matcher::match_rule_supported(Op_StrComp)) return NULL; |
0 | 355 break; |
356 case vmIntrinsics::_indexOf: | |
357 if (!SpecialStringIndexOf) return NULL; | |
358 break; | |
681 | 359 case vmIntrinsics::_equals: |
360 if (!SpecialStringEquals) return NULL; | |
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361 if (!Matcher::match_rule_supported(Op_StrEquals)) return NULL; |
681 | 362 break; |
169
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363 case vmIntrinsics::_equalsC: |
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364 if (!SpecialArraysEquals) return NULL; |
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365 if (!Matcher::match_rule_supported(Op_AryEq)) return NULL; |
169
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366 break; |
0 | 367 case vmIntrinsics::_arraycopy: |
368 if (!InlineArrayCopy) return NULL; | |
369 break; | |
370 case vmIntrinsics::_copyMemory: | |
371 if (StubRoutines::unsafe_arraycopy() == NULL) return NULL; | |
372 if (!InlineArrayCopy) return NULL; | |
373 break; | |
374 case vmIntrinsics::_hashCode: | |
375 if (!InlineObjectHash) return NULL; | |
376 break; | |
377 case vmIntrinsics::_clone: | |
378 case vmIntrinsics::_copyOf: | |
379 case vmIntrinsics::_copyOfRange: | |
380 if (!InlineObjectCopy) return NULL; | |
381 // These also use the arraycopy intrinsic mechanism: | |
382 if (!InlineArrayCopy) return NULL; | |
383 break; | |
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384 case vmIntrinsics::_encodeISOArray: |
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385 if (!SpecialEncodeISOArray) return NULL; |
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386 if (!Matcher::match_rule_supported(Op_EncodeISOArray)) return NULL; |
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387 break; |
0 | 388 case vmIntrinsics::_checkIndex: |
389 // We do not intrinsify this. The optimizer does fine with it. | |
390 return NULL; | |
391 | |
392 case vmIntrinsics::_getCallerClass: | |
393 if (!UseNewReflection) return NULL; | |
394 if (!InlineReflectionGetCallerClass) return NULL; | |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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395 if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) return NULL; |
0 | 396 break; |
397 | |
643
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398 case vmIntrinsics::_bitCount_i: |
5934
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7152957: VM crashes with assert(false) failed: bad AD file
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399 if (!Matcher::match_rule_supported(Op_PopCountI)) return NULL; |
5927
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400 break; |
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6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
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diff
changeset
|
401 |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
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changeset
|
402 case vmIntrinsics::_bitCount_l: |
5934
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7152957: VM crashes with assert(false) failed: bad AD file
never
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changeset
|
403 if (!Matcher::match_rule_supported(Op_PopCountL)) return NULL; |
5927
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
404 break; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
405 |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
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4902
diff
changeset
|
406 case vmIntrinsics::_numberOfLeadingZeros_i: |
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diff
changeset
|
407 if (!Matcher::match_rule_supported(Op_CountLeadingZerosI)) return NULL; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
408 break; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
409 |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
410 case vmIntrinsics::_numberOfLeadingZeros_l: |
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never
parents:
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diff
changeset
|
411 if (!Matcher::match_rule_supported(Op_CountLeadingZerosL)) return NULL; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
412 break; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
413 |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
414 case vmIntrinsics::_numberOfTrailingZeros_i: |
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6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
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parents:
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changeset
|
415 if (!Matcher::match_rule_supported(Op_CountTrailingZerosI)) return NULL; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
416 break; |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
parents:
4902
diff
changeset
|
417 |
b40ac3579043
6658428: C2 doesn't inline java method if corresponding intrinsic failed to inline.
never
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diff
changeset
|
418 case vmIntrinsics::_numberOfTrailingZeros_l: |
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changeset
|
419 if (!Matcher::match_rule_supported(Op_CountTrailingZerosL)) return NULL; |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
420 break; |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
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diff
changeset
|
421 |
7194
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twisti
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changeset
|
422 case vmIntrinsics::_reverseBytes_c: |
7421
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8005031: Some cleanup in c2 to prepare for incremental inlining support
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423 if (!Matcher::match_rule_supported(Op_ReverseBytesUS)) return NULL; |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
424 break; |
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changeset
|
425 case vmIntrinsics::_reverseBytes_s: |
7421
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8005031: Some cleanup in c2 to prepare for incremental inlining support
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changeset
|
426 if (!Matcher::match_rule_supported(Op_ReverseBytesS)) return NULL; |
7194
beebba0acc11
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twisti
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changeset
|
427 break; |
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twisti
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6894
diff
changeset
|
428 case vmIntrinsics::_reverseBytes_i: |
7421
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8005031: Some cleanup in c2 to prepare for incremental inlining support
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7200
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changeset
|
429 if (!Matcher::match_rule_supported(Op_ReverseBytesI)) return NULL; |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
430 break; |
beebba0acc11
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changeset
|
431 case vmIntrinsics::_reverseBytes_l: |
7421
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8005031: Some cleanup in c2 to prepare for incremental inlining support
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7200
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changeset
|
432 if (!Matcher::match_rule_supported(Op_ReverseBytesL)) return NULL; |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
433 break; |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
434 |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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2385
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changeset
|
435 case vmIntrinsics::_Reference_get: |
6615
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7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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6266
diff
changeset
|
436 // Use the intrinsic version of Reference.get() so that the value in |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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6266
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changeset
|
437 // the referent field can be registered by the G1 pre-barrier code. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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diff
changeset
|
438 // Also add memory barrier to prevent commoning reads from this field |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
439 // across safepoint since GC can change it value. |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
440 break; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
441 |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
changeset
|
442 case vmIntrinsics::_compareAndSwapObject: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
443 #ifdef _LP64 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
444 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_CompareAndSwapP)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
445 #endif |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
446 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
447 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
changeset
|
448 case vmIntrinsics::_compareAndSwapLong: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
449 if (!Matcher::match_rule_supported(Op_CompareAndSwapL)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
450 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
451 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
452 case vmIntrinsics::_getAndAddInt: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
453 if (!Matcher::match_rule_supported(Op_GetAndAddI)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
454 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
455 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
456 case vmIntrinsics::_getAndAddLong: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
457 if (!Matcher::match_rule_supported(Op_GetAndAddL)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
458 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
459 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
460 case vmIntrinsics::_getAndSetInt: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
461 if (!Matcher::match_rule_supported(Op_GetAndSetI)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
462 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
463 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
464 case vmIntrinsics::_getAndSetLong: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
465 if (!Matcher::match_rule_supported(Op_GetAndSetL)) return NULL; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
466 break; |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
467 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
468 case vmIntrinsics::_getAndSetObject: |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
469 #ifdef _LP64 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
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470 if (!UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetP)) return NULL; |
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471 if (UseCompressedOops && !Matcher::match_rule_supported(Op_GetAndSetN)) return NULL; |
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472 break; |
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473 #else |
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474 if (!Matcher::match_rule_supported(Op_GetAndSetP)) return NULL; |
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475 break; |
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476 #endif |
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477 |
6894 | 478 case vmIntrinsics::_aescrypt_encryptBlock: |
479 case vmIntrinsics::_aescrypt_decryptBlock: | |
480 if (!UseAESIntrinsics) return NULL; | |
481 break; | |
482 | |
483 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
484 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
485 if (!UseAESIntrinsics) return NULL; | |
486 // these two require the predicated logic | |
487 is_predicted = true; | |
488 break; | |
489 | |
0 | 490 default: |
856
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491 assert(id <= vmIntrinsics::LAST_COMPILER_INLINE, "caller responsibility"); |
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492 assert(id != vmIntrinsics::_Object_init && id != vmIntrinsics::_invoke, "enum out of order?"); |
0 | 493 break; |
494 } | |
495 | |
496 // -XX:-InlineClassNatives disables natives from the Class class. | |
497 // The flag applies to all reflective calls, notably Array.newArray | |
498 // (visible to Java programmers as Array.newInstance). | |
499 if (m->holder()->name() == ciSymbol::java_lang_Class() || | |
500 m->holder()->name() == ciSymbol::java_lang_reflect_Array()) { | |
501 if (!InlineClassNatives) return NULL; | |
502 } | |
503 | |
504 // -XX:-InlineThreadNatives disables natives from the Thread class. | |
505 if (m->holder()->name() == ciSymbol::java_lang_Thread()) { | |
506 if (!InlineThreadNatives) return NULL; | |
507 } | |
508 | |
509 // -XX:-InlineMathNatives disables natives from the Math,Float and Double classes. | |
510 if (m->holder()->name() == ciSymbol::java_lang_Math() || | |
511 m->holder()->name() == ciSymbol::java_lang_Float() || | |
512 m->holder()->name() == ciSymbol::java_lang_Double()) { | |
513 if (!InlineMathNatives) return NULL; | |
514 } | |
515 | |
516 // -XX:-InlineUnsafeOps disables natives from the Unsafe class. | |
517 if (m->holder()->name() == ciSymbol::sun_misc_Unsafe()) { | |
518 if (!InlineUnsafeOps) return NULL; | |
519 } | |
520 | |
6894 | 521 return new LibraryIntrinsic(m, is_virtual, is_predicted, (vmIntrinsics::ID) id); |
0 | 522 } |
523 | |
524 //----------------------register_library_intrinsics----------------------- | |
525 // Initialize this file's data structures, for each Compile instance. | |
526 void Compile::register_library_intrinsics() { | |
527 // Nothing to do here. | |
528 } | |
529 | |
530 JVMState* LibraryIntrinsic::generate(JVMState* jvms) { | |
531 LibraryCallKit kit(jvms, this); | |
532 Compile* C = kit.C; | |
533 int nodes = C->unique(); | |
534 #ifndef PRODUCT | |
535 if ((PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) && Verbose) { | |
536 char buf[1000]; | |
537 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); | |
538 tty->print_cr("Intrinsic %s", str); | |
539 } | |
540 #endif | |
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541 ciMethod* callee = kit.callee(); |
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542 const int bci = kit.bci(); |
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543 |
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544 // Try to inline the intrinsic. |
0 | 545 if (kit.try_to_inline()) { |
546 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { | |
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547 C->print_inlining(callee, jvms->depth() - 1, bci, is_virtual() ? "(intrinsic, virtual)" : "(intrinsic)"); |
0 | 548 } |
549 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked); | |
550 if (C->log()) { | |
551 C->log()->elem("intrinsic id='%s'%s nodes='%d'", | |
552 vmIntrinsics::name_at(intrinsic_id()), | |
553 (is_virtual() ? " virtual='1'" : ""), | |
554 C->unique() - nodes); | |
555 } | |
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556 // Push the result from the inlined method onto the stack. |
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557 kit.push_result(); |
0 | 558 return kit.transfer_exceptions_into_jvms(); |
559 } | |
560 | |
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561 // The intrinsic bailed out |
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562 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { |
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563 if (jvms->has_method()) { |
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564 // Not a root compile. |
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565 const char* msg = is_virtual() ? "failed to inline (intrinsic, virtual)" : "failed to inline (intrinsic)"; |
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566 C->print_inlining(callee, jvms->depth() - 1, bci, msg); |
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567 } else { |
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568 // Root compile |
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569 tty->print("Did not generate intrinsic %s%s at bci:%d in", |
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570 vmIntrinsics::name_at(intrinsic_id()), |
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571 (is_virtual() ? " (virtual)" : ""), bci); |
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572 } |
0 | 573 } |
574 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); | |
575 return NULL; | |
576 } | |
577 | |
6894 | 578 Node* LibraryIntrinsic::generate_predicate(JVMState* jvms) { |
579 LibraryCallKit kit(jvms, this); | |
580 Compile* C = kit.C; | |
581 int nodes = C->unique(); | |
582 #ifndef PRODUCT | |
583 assert(is_predicted(), "sanity"); | |
584 if ((PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) && Verbose) { | |
585 char buf[1000]; | |
586 const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf)); | |
587 tty->print_cr("Predicate for intrinsic %s", str); | |
588 } | |
589 #endif | |
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590 ciMethod* callee = kit.callee(); |
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591 const int bci = kit.bci(); |
6894 | 592 |
593 Node* slow_ctl = kit.try_to_predicate(); | |
594 if (!kit.failing()) { | |
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595 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { |
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596 C->print_inlining(callee, jvms->depth() - 1, bci, is_virtual() ? "(intrinsic, virtual)" : "(intrinsic)"); |
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597 } |
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598 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked); |
6894 | 599 if (C->log()) { |
600 C->log()->elem("predicate_intrinsic id='%s'%s nodes='%d'", | |
601 vmIntrinsics::name_at(intrinsic_id()), | |
602 (is_virtual() ? " virtual='1'" : ""), | |
603 C->unique() - nodes); | |
604 } | |
605 return slow_ctl; // Could be NULL if the check folds. | |
606 } | |
607 | |
608 // The intrinsic bailed out | |
609 if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) { | |
610 if (jvms->has_method()) { | |
611 // Not a root compile. | |
612 const char* msg = "failed to generate predicate for intrinsic"; | |
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613 C->print_inlining(kit.callee(), jvms->depth() - 1, bci, msg); |
6894 | 614 } else { |
615 // Root compile | |
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616 C->print_inlining_stream()->print("Did not generate predicate for intrinsic %s%s at bci:%d in", |
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617 vmIntrinsics::name_at(intrinsic_id()), |
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618 (is_virtual() ? " (virtual)" : ""), bci); |
6894 | 619 } |
620 } | |
621 C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_failed); | |
622 return NULL; | |
623 } | |
624 | |
0 | 625 bool LibraryCallKit::try_to_inline() { |
626 // Handle symbolic names for otherwise undistinguished boolean switches: | |
627 const bool is_store = true; | |
628 const bool is_native_ptr = true; | |
629 const bool is_static = true; | |
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630 const bool is_volatile = true; |
0 | 631 |
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632 if (!jvms()->has_method()) { |
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633 // Root JVMState has a null method. |
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634 assert(map()->memory()->Opcode() == Op_Parm, ""); |
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635 // Insert the memory aliasing node |
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636 set_all_memory(reset_memory()); |
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637 } |
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638 assert(merged_memory(), ""); |
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639 |
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640 |
0 | 641 switch (intrinsic_id()) { |
7194
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642 case vmIntrinsics::_hashCode: return inline_native_hashcode(intrinsic()->is_virtual(), !is_static); |
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643 case vmIntrinsics::_identityHashCode: return inline_native_hashcode(/*!virtual*/ false, is_static); |
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644 case vmIntrinsics::_getClass: return inline_native_getClass(); |
0 | 645 |
646 case vmIntrinsics::_dsin: | |
647 case vmIntrinsics::_dcos: | |
648 case vmIntrinsics::_dtan: | |
649 case vmIntrinsics::_dabs: | |
650 case vmIntrinsics::_datan2: | |
651 case vmIntrinsics::_dsqrt: | |
652 case vmIntrinsics::_dexp: | |
653 case vmIntrinsics::_dlog: | |
654 case vmIntrinsics::_dlog10: | |
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655 case vmIntrinsics::_dpow: return inline_math_native(intrinsic_id()); |
0 | 656 |
657 case vmIntrinsics::_min: | |
7194
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658 case vmIntrinsics::_max: return inline_min_max(intrinsic_id()); |
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659 |
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660 case vmIntrinsics::_arraycopy: return inline_arraycopy(); |
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661 |
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662 case vmIntrinsics::_compareTo: return inline_string_compareTo(); |
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663 case vmIntrinsics::_indexOf: return inline_string_indexOf(); |
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664 case vmIntrinsics::_equals: return inline_string_equals(); |
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665 |
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666 case vmIntrinsics::_getObject: return inline_unsafe_access(!is_native_ptr, !is_store, T_OBJECT, !is_volatile); |
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667 case vmIntrinsics::_getBoolean: return inline_unsafe_access(!is_native_ptr, !is_store, T_BOOLEAN, !is_volatile); |
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668 case vmIntrinsics::_getByte: return inline_unsafe_access(!is_native_ptr, !is_store, T_BYTE, !is_volatile); |
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669 case vmIntrinsics::_getShort: return inline_unsafe_access(!is_native_ptr, !is_store, T_SHORT, !is_volatile); |
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670 case vmIntrinsics::_getChar: return inline_unsafe_access(!is_native_ptr, !is_store, T_CHAR, !is_volatile); |
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671 case vmIntrinsics::_getInt: return inline_unsafe_access(!is_native_ptr, !is_store, T_INT, !is_volatile); |
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672 case vmIntrinsics::_getLong: return inline_unsafe_access(!is_native_ptr, !is_store, T_LONG, !is_volatile); |
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673 case vmIntrinsics::_getFloat: return inline_unsafe_access(!is_native_ptr, !is_store, T_FLOAT, !is_volatile); |
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674 case vmIntrinsics::_getDouble: return inline_unsafe_access(!is_native_ptr, !is_store, T_DOUBLE, !is_volatile); |
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675 |
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676 case vmIntrinsics::_putObject: return inline_unsafe_access(!is_native_ptr, is_store, T_OBJECT, !is_volatile); |
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677 case vmIntrinsics::_putBoolean: return inline_unsafe_access(!is_native_ptr, is_store, T_BOOLEAN, !is_volatile); |
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678 case vmIntrinsics::_putByte: return inline_unsafe_access(!is_native_ptr, is_store, T_BYTE, !is_volatile); |
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679 case vmIntrinsics::_putShort: return inline_unsafe_access(!is_native_ptr, is_store, T_SHORT, !is_volatile); |
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680 case vmIntrinsics::_putChar: return inline_unsafe_access(!is_native_ptr, is_store, T_CHAR, !is_volatile); |
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681 case vmIntrinsics::_putInt: return inline_unsafe_access(!is_native_ptr, is_store, T_INT, !is_volatile); |
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682 case vmIntrinsics::_putLong: return inline_unsafe_access(!is_native_ptr, is_store, T_LONG, !is_volatile); |
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683 case vmIntrinsics::_putFloat: return inline_unsafe_access(!is_native_ptr, is_store, T_FLOAT, !is_volatile); |
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684 case vmIntrinsics::_putDouble: return inline_unsafe_access(!is_native_ptr, is_store, T_DOUBLE, !is_volatile); |
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685 |
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686 case vmIntrinsics::_getByte_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_BYTE, !is_volatile); |
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687 case vmIntrinsics::_getShort_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_SHORT, !is_volatile); |
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688 case vmIntrinsics::_getChar_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_CHAR, !is_volatile); |
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689 case vmIntrinsics::_getInt_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_INT, !is_volatile); |
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690 case vmIntrinsics::_getLong_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_LONG, !is_volatile); |
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691 case vmIntrinsics::_getFloat_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_FLOAT, !is_volatile); |
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692 case vmIntrinsics::_getDouble_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_DOUBLE, !is_volatile); |
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693 case vmIntrinsics::_getAddress_raw: return inline_unsafe_access( is_native_ptr, !is_store, T_ADDRESS, !is_volatile); |
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694 |
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695 case vmIntrinsics::_putByte_raw: return inline_unsafe_access( is_native_ptr, is_store, T_BYTE, !is_volatile); |
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696 case vmIntrinsics::_putShort_raw: return inline_unsafe_access( is_native_ptr, is_store, T_SHORT, !is_volatile); |
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697 case vmIntrinsics::_putChar_raw: return inline_unsafe_access( is_native_ptr, is_store, T_CHAR, !is_volatile); |
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698 case vmIntrinsics::_putInt_raw: return inline_unsafe_access( is_native_ptr, is_store, T_INT, !is_volatile); |
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699 case vmIntrinsics::_putLong_raw: return inline_unsafe_access( is_native_ptr, is_store, T_LONG, !is_volatile); |
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700 case vmIntrinsics::_putFloat_raw: return inline_unsafe_access( is_native_ptr, is_store, T_FLOAT, !is_volatile); |
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701 case vmIntrinsics::_putDouble_raw: return inline_unsafe_access( is_native_ptr, is_store, T_DOUBLE, !is_volatile); |
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702 case vmIntrinsics::_putAddress_raw: return inline_unsafe_access( is_native_ptr, is_store, T_ADDRESS, !is_volatile); |
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703 |
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704 case vmIntrinsics::_getObjectVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_OBJECT, is_volatile); |
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705 case vmIntrinsics::_getBooleanVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_BOOLEAN, is_volatile); |
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706 case vmIntrinsics::_getByteVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_BYTE, is_volatile); |
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707 case vmIntrinsics::_getShortVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_SHORT, is_volatile); |
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708 case vmIntrinsics::_getCharVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_CHAR, is_volatile); |
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709 case vmIntrinsics::_getIntVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_INT, is_volatile); |
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710 case vmIntrinsics::_getLongVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_LONG, is_volatile); |
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711 case vmIntrinsics::_getFloatVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_FLOAT, is_volatile); |
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712 case vmIntrinsics::_getDoubleVolatile: return inline_unsafe_access(!is_native_ptr, !is_store, T_DOUBLE, is_volatile); |
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|
713 |
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714 case vmIntrinsics::_putObjectVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_OBJECT, is_volatile); |
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715 case vmIntrinsics::_putBooleanVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_BOOLEAN, is_volatile); |
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716 case vmIntrinsics::_putByteVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_BYTE, is_volatile); |
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717 case vmIntrinsics::_putShortVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_SHORT, is_volatile); |
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718 case vmIntrinsics::_putCharVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_CHAR, is_volatile); |
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719 case vmIntrinsics::_putIntVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_INT, is_volatile); |
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720 case vmIntrinsics::_putLongVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_LONG, is_volatile); |
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721 case vmIntrinsics::_putFloatVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_FLOAT, is_volatile); |
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722 case vmIntrinsics::_putDoubleVolatile: return inline_unsafe_access(!is_native_ptr, is_store, T_DOUBLE, is_volatile); |
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|
723 |
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724 case vmIntrinsics::_prefetchRead: return inline_unsafe_prefetch(!is_native_ptr, !is_store, !is_static); |
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725 case vmIntrinsics::_prefetchWrite: return inline_unsafe_prefetch(!is_native_ptr, is_store, !is_static); |
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726 case vmIntrinsics::_prefetchReadStatic: return inline_unsafe_prefetch(!is_native_ptr, !is_store, is_static); |
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727 case vmIntrinsics::_prefetchWriteStatic: return inline_unsafe_prefetch(!is_native_ptr, is_store, is_static); |
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|
728 |
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729 case vmIntrinsics::_compareAndSwapObject: return inline_unsafe_load_store(T_OBJECT, LS_cmpxchg); |
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730 case vmIntrinsics::_compareAndSwapInt: return inline_unsafe_load_store(T_INT, LS_cmpxchg); |
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731 case vmIntrinsics::_compareAndSwapLong: return inline_unsafe_load_store(T_LONG, LS_cmpxchg); |
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|
732 |
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733 case vmIntrinsics::_putOrderedObject: return inline_unsafe_ordered_store(T_OBJECT); |
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734 case vmIntrinsics::_putOrderedInt: return inline_unsafe_ordered_store(T_INT); |
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735 case vmIntrinsics::_putOrderedLong: return inline_unsafe_ordered_store(T_LONG); |
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|
736 |
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737 case vmIntrinsics::_getAndAddInt: return inline_unsafe_load_store(T_INT, LS_xadd); |
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738 case vmIntrinsics::_getAndAddLong: return inline_unsafe_load_store(T_LONG, LS_xadd); |
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739 case vmIntrinsics::_getAndSetInt: return inline_unsafe_load_store(T_INT, LS_xchg); |
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|
740 case vmIntrinsics::_getAndSetLong: return inline_unsafe_load_store(T_LONG, LS_xchg); |
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741 case vmIntrinsics::_getAndSetObject: return inline_unsafe_load_store(T_OBJECT, LS_xchg); |
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|
742 |
7425 | 743 case vmIntrinsics::_loadFence: |
744 case vmIntrinsics::_storeFence: | |
745 case vmIntrinsics::_fullFence: return inline_unsafe_fence(intrinsic_id()); | |
746 | |
7194
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747 case vmIntrinsics::_currentThread: return inline_native_currentThread(); |
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|
748 case vmIntrinsics::_isInterrupted: return inline_native_isInterrupted(); |
0 | 749 |
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
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|
750 #ifdef TRACE_HAVE_INTRINSICS |
7194
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751 case vmIntrinsics::_classID: return inline_native_classID(); |
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752 case vmIntrinsics::_threadID: return inline_native_threadID(); |
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|
753 case vmIntrinsics::_counterTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, TRACE_TIME_METHOD), "counterTime"); |
6006
0105f367a14c
7160570: Intrinsification support for tracing framework
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|
754 #endif |
7194
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|
755 case vmIntrinsics::_currentTimeMillis: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeMillis), "currentTimeMillis"); |
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756 case vmIntrinsics::_nanoTime: return inline_native_time_funcs(CAST_FROM_FN_PTR(address, os::javaTimeNanos), "nanoTime"); |
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757 case vmIntrinsics::_allocateInstance: return inline_unsafe_allocate(); |
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|
758 case vmIntrinsics::_copyMemory: return inline_unsafe_copyMemory(); |
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|
759 case vmIntrinsics::_newArray: return inline_native_newArray(); |
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|
760 case vmIntrinsics::_getLength: return inline_native_getLength(); |
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761 case vmIntrinsics::_copyOf: return inline_array_copyOf(false); |
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762 case vmIntrinsics::_copyOfRange: return inline_array_copyOf(true); |
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763 case vmIntrinsics::_equalsC: return inline_array_equals(); |
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|
764 case vmIntrinsics::_clone: return inline_native_clone(intrinsic()->is_virtual()); |
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changeset
|
765 |
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|
766 case vmIntrinsics::_isAssignableFrom: return inline_native_subtype_check(); |
0 | 767 |
768 case vmIntrinsics::_isInstance: | |
769 case vmIntrinsics::_getModifiers: | |
770 case vmIntrinsics::_isInterface: | |
771 case vmIntrinsics::_isArray: | |
772 case vmIntrinsics::_isPrimitive: | |
773 case vmIntrinsics::_getSuperclass: | |
774 case vmIntrinsics::_getComponentType: | |
7194
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|
775 case vmIntrinsics::_getClassAccessFlags: return inline_native_Class_query(intrinsic_id()); |
0 | 776 |
777 case vmIntrinsics::_floatToRawIntBits: | |
778 case vmIntrinsics::_floatToIntBits: | |
779 case vmIntrinsics::_intBitsToFloat: | |
780 case vmIntrinsics::_doubleToRawLongBits: | |
781 case vmIntrinsics::_doubleToLongBits: | |
7194
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|
782 case vmIntrinsics::_longBitsToDouble: return inline_fp_conversions(intrinsic_id()); |
0 | 783 |
775
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
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diff
changeset
|
784 case vmIntrinsics::_numberOfLeadingZeros_i: |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
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diff
changeset
|
785 case vmIntrinsics::_numberOfLeadingZeros_l: |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
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diff
changeset
|
786 case vmIntrinsics::_numberOfTrailingZeros_i: |
93c14e5562c4
6823354: Add intrinsics for {Integer,Long}.{numberOfLeadingZeros,numberOfTrailingZeros}()
twisti
parents:
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diff
changeset
|
787 case vmIntrinsics::_numberOfTrailingZeros_l: |
643
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
parents:
605
diff
changeset
|
788 case vmIntrinsics::_bitCount_i: |
c771b7f43bbf
6378821: bitCount() should use POPC on SPARC processors and AMD+10h
twisti
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605
diff
changeset
|
789 case vmIntrinsics::_bitCount_l: |
0 | 790 case vmIntrinsics::_reverseBytes_i: |
791 case vmIntrinsics::_reverseBytes_l: | |
1396
d7f654633cfe
6946040: add intrinsic for short and char reverseBytes
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diff
changeset
|
792 case vmIntrinsics::_reverseBytes_s: |
7194
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|
793 case vmIntrinsics::_reverseBytes_c: return inline_number_methods(intrinsic_id()); |
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|
794 |
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|
795 case vmIntrinsics::_getCallerClass: return inline_native_Reflection_getCallerClass(); |
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|
796 |
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|
797 case vmIntrinsics::_Reference_get: return inline_reference_get(); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
798 |
6894 | 799 case vmIntrinsics::_aescrypt_encryptBlock: |
7194
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800 case vmIntrinsics::_aescrypt_decryptBlock: return inline_aescrypt_Block(intrinsic_id()); |
6894 | 801 |
802 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
803 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
804 return inline_cipherBlockChaining_AESCrypt(intrinsic_id()); | |
805 | |
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806 case vmIntrinsics::_encodeISOArray: |
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807 return inline_encodeISOArray(); |
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808 |
0 | 809 default: |
810 // If you get here, it may be that someone has added a new intrinsic | |
811 // to the list in vmSymbols.hpp without implementing it here. | |
812 #ifndef PRODUCT | |
813 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { | |
814 tty->print_cr("*** Warning: Unimplemented intrinsic %s(%d)", | |
815 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); | |
816 } | |
817 #endif | |
818 return false; | |
819 } | |
820 } | |
821 | |
6894 | 822 Node* LibraryCallKit::try_to_predicate() { |
823 if (!jvms()->has_method()) { | |
824 // Root JVMState has a null method. | |
825 assert(map()->memory()->Opcode() == Op_Parm, ""); | |
826 // Insert the memory aliasing node | |
827 set_all_memory(reset_memory()); | |
828 } | |
829 assert(merged_memory(), ""); | |
830 | |
831 switch (intrinsic_id()) { | |
832 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
833 return inline_cipherBlockChaining_AESCrypt_predicate(false); | |
834 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
835 return inline_cipherBlockChaining_AESCrypt_predicate(true); | |
836 | |
837 default: | |
838 // If you get here, it may be that someone has added a new intrinsic | |
839 // to the list in vmSymbols.hpp without implementing it here. | |
840 #ifndef PRODUCT | |
841 if ((PrintMiscellaneous && (Verbose || WizardMode)) || PrintOpto) { | |
842 tty->print_cr("*** Warning: Unimplemented predicate for intrinsic %s(%d)", | |
843 vmIntrinsics::name_at(intrinsic_id()), intrinsic_id()); | |
844 } | |
845 #endif | |
846 Node* slow_ctl = control(); | |
847 set_control(top()); // No fast path instrinsic | |
848 return slow_ctl; | |
849 } | |
850 } | |
851 | |
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852 //------------------------------set_result------------------------------- |
0 | 853 // Helper function for finishing intrinsics. |
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854 void LibraryCallKit::set_result(RegionNode* region, PhiNode* value) { |
0 | 855 record_for_igvn(region); |
856 set_control(_gvn.transform(region)); | |
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857 set_result( _gvn.transform(value)); |
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858 assert(value->type()->basic_type() == result()->bottom_type()->basic_type(), "sanity"); |
0 | 859 } |
860 | |
861 //------------------------------generate_guard--------------------------- | |
862 // Helper function for generating guarded fast-slow graph structures. | |
863 // The given 'test', if true, guards a slow path. If the test fails | |
864 // then a fast path can be taken. (We generally hope it fails.) | |
865 // In all cases, GraphKit::control() is updated to the fast path. | |
866 // The returned value represents the control for the slow path. | |
867 // The return value is never 'top'; it is either a valid control | |
868 // or NULL if it is obvious that the slow path can never be taken. | |
869 // Also, if region and the slow control are not NULL, the slow edge | |
870 // is appended to the region. | |
871 Node* LibraryCallKit::generate_guard(Node* test, RegionNode* region, float true_prob) { | |
872 if (stopped()) { | |
873 // Already short circuited. | |
874 return NULL; | |
875 } | |
876 | |
877 // Build an if node and its projections. | |
878 // If test is true we take the slow path, which we assume is uncommon. | |
879 if (_gvn.type(test) == TypeInt::ZERO) { | |
880 // The slow branch is never taken. No need to build this guard. | |
881 return NULL; | |
882 } | |
883 | |
884 IfNode* iff = create_and_map_if(control(), test, true_prob, COUNT_UNKNOWN); | |
885 | |
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886 Node* if_slow = _gvn.transform( new (C) IfTrueNode(iff) ); |
0 | 887 if (if_slow == top()) { |
888 // The slow branch is never taken. No need to build this guard. | |
889 return NULL; | |
890 } | |
891 | |
892 if (region != NULL) | |
893 region->add_req(if_slow); | |
894 | |
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895 Node* if_fast = _gvn.transform( new (C) IfFalseNode(iff) ); |
0 | 896 set_control(if_fast); |
897 | |
898 return if_slow; | |
899 } | |
900 | |
901 inline Node* LibraryCallKit::generate_slow_guard(Node* test, RegionNode* region) { | |
902 return generate_guard(test, region, PROB_UNLIKELY_MAG(3)); | |
903 } | |
904 inline Node* LibraryCallKit::generate_fair_guard(Node* test, RegionNode* region) { | |
905 return generate_guard(test, region, PROB_FAIR); | |
906 } | |
907 | |
908 inline Node* LibraryCallKit::generate_negative_guard(Node* index, RegionNode* region, | |
909 Node* *pos_index) { | |
910 if (stopped()) | |
911 return NULL; // already stopped | |
912 if (_gvn.type(index)->higher_equal(TypeInt::POS)) // [0,maxint] | |
913 return NULL; // index is already adequately typed | |
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914 Node* cmp_lt = _gvn.transform( new (C) CmpINode(index, intcon(0)) ); |
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915 Node* bol_lt = _gvn.transform( new (C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 916 Node* is_neg = generate_guard(bol_lt, region, PROB_MIN); |
917 if (is_neg != NULL && pos_index != NULL) { | |
918 // Emulate effect of Parse::adjust_map_after_if. | |
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919 Node* ccast = new (C) CastIINode(index, TypeInt::POS); |
0 | 920 ccast->set_req(0, control()); |
921 (*pos_index) = _gvn.transform(ccast); | |
922 } | |
923 return is_neg; | |
924 } | |
925 | |
926 inline Node* LibraryCallKit::generate_nonpositive_guard(Node* index, bool never_negative, | |
927 Node* *pos_index) { | |
928 if (stopped()) | |
929 return NULL; // already stopped | |
930 if (_gvn.type(index)->higher_equal(TypeInt::POS1)) // [1,maxint] | |
931 return NULL; // index is already adequately typed | |
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932 Node* cmp_le = _gvn.transform( new (C) CmpINode(index, intcon(0)) ); |
0 | 933 BoolTest::mask le_or_eq = (never_negative ? BoolTest::eq : BoolTest::le); |
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934 Node* bol_le = _gvn.transform( new (C) BoolNode(cmp_le, le_or_eq) ); |
0 | 935 Node* is_notp = generate_guard(bol_le, NULL, PROB_MIN); |
936 if (is_notp != NULL && pos_index != NULL) { | |
937 // Emulate effect of Parse::adjust_map_after_if. | |
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938 Node* ccast = new (C) CastIINode(index, TypeInt::POS1); |
0 | 939 ccast->set_req(0, control()); |
940 (*pos_index) = _gvn.transform(ccast); | |
941 } | |
942 return is_notp; | |
943 } | |
944 | |
945 // Make sure that 'position' is a valid limit index, in [0..length]. | |
946 // There are two equivalent plans for checking this: | |
947 // A. (offset + copyLength) unsigned<= arrayLength | |
948 // B. offset <= (arrayLength - copyLength) | |
949 // We require that all of the values above, except for the sum and | |
950 // difference, are already known to be non-negative. | |
951 // Plan A is robust in the face of overflow, if offset and copyLength | |
952 // are both hugely positive. | |
953 // | |
954 // Plan B is less direct and intuitive, but it does not overflow at | |
955 // all, since the difference of two non-negatives is always | |
956 // representable. Whenever Java methods must perform the equivalent | |
957 // check they generally use Plan B instead of Plan A. | |
958 // For the moment we use Plan A. | |
959 inline Node* LibraryCallKit::generate_limit_guard(Node* offset, | |
960 Node* subseq_length, | |
961 Node* array_length, | |
962 RegionNode* region) { | |
963 if (stopped()) | |
964 return NULL; // already stopped | |
965 bool zero_offset = _gvn.type(offset) == TypeInt::ZERO; | |
4778 | 966 if (zero_offset && subseq_length->eqv_uncast(array_length)) |
0 | 967 return NULL; // common case of whole-array copy |
968 Node* last = subseq_length; | |
969 if (!zero_offset) // last += offset | |
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970 last = _gvn.transform( new (C) AddINode(last, offset)); |
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971 Node* cmp_lt = _gvn.transform( new (C) CmpUNode(array_length, last) ); |
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972 Node* bol_lt = _gvn.transform( new (C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 973 Node* is_over = generate_guard(bol_lt, region, PROB_MIN); |
974 return is_over; | |
975 } | |
976 | |
977 | |
978 //--------------------------generate_current_thread-------------------- | |
979 Node* LibraryCallKit::generate_current_thread(Node* &tls_output) { | |
980 ciKlass* thread_klass = env()->Thread_klass(); | |
981 const Type* thread_type = TypeOopPtr::make_from_klass(thread_klass)->cast_to_ptr_type(TypePtr::NotNull); | |
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982 Node* thread = _gvn.transform(new (C) ThreadLocalNode()); |
0 | 983 Node* p = basic_plus_adr(top()/*!oop*/, thread, in_bytes(JavaThread::threadObj_offset())); |
984 Node* threadObj = make_load(NULL, p, thread_type, T_OBJECT); | |
985 tls_output = thread; | |
986 return threadObj; | |
987 } | |
988 | |
989 | |
986
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990 //------------------------------make_string_method_node------------------------ |
6057 | 991 // Helper method for String intrinsic functions. This version is called |
992 // with str1 and str2 pointing to String object nodes. | |
993 // | |
994 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1, Node* str2) { | |
986
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995 Node* no_ctrl = NULL; |
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996 |
6057 | 997 // Get start addr of string |
998 Node* str1_value = load_String_value(no_ctrl, str1); | |
999 Node* str1_offset = load_String_offset(no_ctrl, str1); | |
986
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1000 Node* str1_start = array_element_address(str1_value, str1_offset, T_CHAR); |
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1001 |
6057 | 1002 // Get length of string 1 |
1003 Node* str1_len = load_String_length(no_ctrl, str1); | |
1004 | |
1005 Node* str2_value = load_String_value(no_ctrl, str2); | |
1006 Node* str2_offset = load_String_offset(no_ctrl, str2); | |
986
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1007 Node* str2_start = array_element_address(str2_value, str2_offset, T_CHAR); |
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1008 |
6057 | 1009 Node* str2_len = NULL; |
1010 Node* result = NULL; | |
1011 | |
1012 switch (opcode) { | |
1013 case Op_StrIndexOf: | |
1014 // Get length of string 2 | |
1015 str2_len = load_String_length(no_ctrl, str2); | |
1016 | |
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1017 result = new (C) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1018 str1_start, str1_len, str2_start, str2_len); |
1019 break; | |
1020 case Op_StrComp: | |
1021 // Get length of string 2 | |
1022 str2_len = load_String_length(no_ctrl, str2); | |
1023 | |
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1024 result = new (C) StrCompNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1025 str1_start, str1_len, str2_start, str2_len); |
1026 break; | |
1027 case Op_StrEquals: | |
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1028 result = new (C) StrEqualsNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1029 str1_start, str2_start, str1_len); |
1030 break; | |
1031 default: | |
1032 ShouldNotReachHere(); | |
1033 return NULL; | |
1034 } | |
1035 | |
1036 // All these intrinsics have checks. | |
1037 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1038 | |
1039 return _gvn.transform(result); | |
1040 } | |
1041 | |
1042 // Helper method for String intrinsic functions. This version is called | |
1043 // with str1 and str2 pointing to char[] nodes, with cnt1 and cnt2 pointing | |
1044 // to Int nodes containing the lenghts of str1 and str2. | |
1045 // | |
1046 Node* LibraryCallKit::make_string_method_node(int opcode, Node* str1_start, Node* cnt1, Node* str2_start, Node* cnt2) { | |
986
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1047 Node* result = NULL; |
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1048 switch (opcode) { |
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1049 case Op_StrIndexOf: |
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1050 result = new (C) StrIndexOfNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1051 str1_start, cnt1, str2_start, cnt2); |
986
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1052 break; |
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1053 case Op_StrComp: |
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1054 result = new (C) StrCompNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1055 str1_start, cnt1, str2_start, cnt2); |
986
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1056 break; |
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1057 case Op_StrEquals: |
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1058 result = new (C) StrEqualsNode(control(), memory(TypeAryPtr::CHARS), |
6057 | 1059 str1_start, str2_start, cnt1); |
986
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1060 break; |
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1061 default: |
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1062 ShouldNotReachHere(); |
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1063 return NULL; |
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1064 } |
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1065 |
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1066 // All these intrinsics have checks. |
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1067 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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1068 |
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1069 return _gvn.transform(result); |
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1070 } |
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1071 |
0 | 1072 //------------------------------inline_string_compareTo------------------------ |
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1073 // public int java.lang.String.compareTo(String anotherString); |
0 | 1074 bool LibraryCallKit::inline_string_compareTo() { |
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1075 Node* receiver = null_check(argument(0)); |
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1076 Node* arg = null_check(argument(1)); |
0 | 1077 if (stopped()) { |
1078 return true; | |
1079 } | |
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1080 set_result(make_string_method_node(Op_StrComp, receiver, arg)); |
0 | 1081 return true; |
1082 } | |
1083 | |
681 | 1084 //------------------------------inline_string_equals------------------------ |
1085 bool LibraryCallKit::inline_string_equals() { | |
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1086 Node* receiver = null_check_receiver(); |
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1087 // NOTE: Do not null check argument for String.equals() because spec |
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1088 // allows to specify NULL as argument. |
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1089 Node* argument = this->argument(1); |
681 | 1090 if (stopped()) { |
1091 return true; | |
1092 } | |
1093 | |
986
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1094 // paths (plus control) merge |
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1095 RegionNode* region = new (C) RegionNode(5); |
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1096 Node* phi = new (C) PhiNode(region, TypeInt::BOOL); |
986
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1097 |
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1098 // does source == target string? |
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1099 Node* cmp = _gvn.transform(new (C) CmpPNode(receiver, argument)); |
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1100 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::eq)); |
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1101 |
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1102 Node* if_eq = generate_slow_guard(bol, NULL); |
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1103 if (if_eq != NULL) { |
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1104 // receiver == argument |
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1105 phi->init_req(2, intcon(1)); |
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1106 region->init_req(2, if_eq); |
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1107 } |
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1108 |
681 | 1109 // get String klass for instanceOf |
1110 ciInstanceKlass* klass = env()->String_klass(); | |
1111 | |
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1112 if (!stopped()) { |
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1113 Node* inst = gen_instanceof(argument, makecon(TypeKlassPtr::make(klass))); |
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1114 Node* cmp = _gvn.transform(new (C) CmpINode(inst, intcon(1))); |
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1115 Node* bol = _gvn.transform(new (C) BoolNode(cmp, BoolTest::ne)); |
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1116 |
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1117 Node* inst_false = generate_guard(bol, NULL, PROB_MIN); |
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1118 //instanceOf == true, fallthrough |
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1119 |
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1120 if (inst_false != NULL) { |
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1121 phi->init_req(3, intcon(0)); |
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1122 region->init_req(3, inst_false); |
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1123 } |
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1124 } |
681 | 1125 |
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1126 if (!stopped()) { |
6057 | 1127 const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(klass); |
1128 | |
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1129 // Properly cast the argument to String |
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1130 argument = _gvn.transform(new (C) CheckCastPPNode(control(), argument, string_type)); |
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1131 // This path is taken only when argument's type is String:NotNull. |
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1132 argument = cast_not_null(argument, false); |
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1133 |
6057 | 1134 Node* no_ctrl = NULL; |
1135 | |
1136 // Get start addr of receiver | |
1137 Node* receiver_val = load_String_value(no_ctrl, receiver); | |
1138 Node* receiver_offset = load_String_offset(no_ctrl, receiver); | |
1139 Node* receiver_start = array_element_address(receiver_val, receiver_offset, T_CHAR); | |
1140 | |
1141 // Get length of receiver | |
1142 Node* receiver_cnt = load_String_length(no_ctrl, receiver); | |
1143 | |
1144 // Get start addr of argument | |
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1145 Node* argument_val = load_String_value(no_ctrl, argument); |
6057 | 1146 Node* argument_offset = load_String_offset(no_ctrl, argument); |
1147 Node* argument_start = array_element_address(argument_val, argument_offset, T_CHAR); | |
1148 | |
1149 // Get length of argument | |
1150 Node* argument_cnt = load_String_length(no_ctrl, argument); | |
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1151 |
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1152 // Check for receiver count != argument count |
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1153 Node* cmp = _gvn.transform( new(C) CmpINode(receiver_cnt, argument_cnt) ); |
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1154 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::ne) ); |
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1155 Node* if_ne = generate_slow_guard(bol, NULL); |
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1156 if (if_ne != NULL) { |
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1157 phi->init_req(4, intcon(0)); |
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1158 region->init_req(4, if_ne); |
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1159 } |
6057 | 1160 |
1161 // Check for count == 0 is done by assembler code for StrEquals. | |
1162 | |
1163 if (!stopped()) { | |
1164 Node* equals = make_string_method_node(Op_StrEquals, receiver_start, receiver_cnt, argument_start, argument_cnt); | |
1165 phi->init_req(1, equals); | |
1166 region->init_req(1, control()); | |
1167 } | |
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1168 } |
681 | 1169 |
1170 // post merge | |
1171 set_control(_gvn.transform(region)); | |
1172 record_for_igvn(region); | |
1173 | |
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1174 set_result(_gvn.transform(phi)); |
681 | 1175 return true; |
1176 } | |
1177 | |
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1178 //------------------------------inline_array_equals---------------------------- |
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1179 bool LibraryCallKit::inline_array_equals() { |
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1180 Node* arg1 = argument(0); |
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1181 Node* arg2 = argument(1); |
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1182 set_result(_gvn.transform(new (C) AryEqNode(control(), memory(TypeAryPtr::CHARS), arg1, arg2))); |
169
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1183 return true; |
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1184 } |
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1185 |
0 | 1186 // Java version of String.indexOf(constant string) |
1187 // class StringDecl { | |
1188 // StringDecl(char[] ca) { | |
1189 // offset = 0; | |
1190 // count = ca.length; | |
1191 // value = ca; | |
1192 // } | |
1193 // int offset; | |
1194 // int count; | |
1195 // char[] value; | |
1196 // } | |
1197 // | |
1198 // static int string_indexOf_J(StringDecl string_object, char[] target_object, | |
1199 // int targetOffset, int cache_i, int md2) { | |
1200 // int cache = cache_i; | |
1201 // int sourceOffset = string_object.offset; | |
1202 // int sourceCount = string_object.count; | |
1203 // int targetCount = target_object.length; | |
1204 // | |
1205 // int targetCountLess1 = targetCount - 1; | |
1206 // int sourceEnd = sourceOffset + sourceCount - targetCountLess1; | |
1207 // | |
1208 // char[] source = string_object.value; | |
1209 // char[] target = target_object; | |
1210 // int lastChar = target[targetCountLess1]; | |
1211 // | |
1212 // outer_loop: | |
1213 // for (int i = sourceOffset; i < sourceEnd; ) { | |
1214 // int src = source[i + targetCountLess1]; | |
1215 // if (src == lastChar) { | |
1216 // // With random strings and a 4-character alphabet, | |
1217 // // reverse matching at this point sets up 0.8% fewer | |
1218 // // frames, but (paradoxically) makes 0.3% more probes. | |
1219 // // Since those probes are nearer the lastChar probe, | |
1220 // // there is may be a net D$ win with reverse matching. | |
1221 // // But, reversing loop inhibits unroll of inner loop | |
1222 // // for unknown reason. So, does running outer loop from | |
1223 // // (sourceOffset - targetCountLess1) to (sourceOffset + sourceCount) | |
1224 // for (int j = 0; j < targetCountLess1; j++) { | |
1225 // if (target[targetOffset + j] != source[i+j]) { | |
1226 // if ((cache & (1 << source[i+j])) == 0) { | |
1227 // if (md2 < j+1) { | |
1228 // i += j+1; | |
1229 // continue outer_loop; | |
1230 // } | |
1231 // } | |
1232 // i += md2; | |
1233 // continue outer_loop; | |
1234 // } | |
1235 // } | |
1236 // return i - sourceOffset; | |
1237 // } | |
1238 // if ((cache & (1 << src)) == 0) { | |
1239 // i += targetCountLess1; | |
1240 // } // using "i += targetCount;" and an "else i++;" causes a jump to jump. | |
1241 // i++; | |
1242 // } | |
1243 // return -1; | |
1244 // } | |
1245 | |
1246 //------------------------------string_indexOf------------------------ | |
1247 Node* LibraryCallKit::string_indexOf(Node* string_object, ciTypeArray* target_array, jint targetOffset_i, | |
1248 jint cache_i, jint md2_i) { | |
1249 | |
1250 Node* no_ctrl = NULL; | |
1251 float likely = PROB_LIKELY(0.9); | |
1252 float unlikely = PROB_UNLIKELY(0.9); | |
1253 | |
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1254 const int nargs = 0; // no arguments to push back for uncommon trap in predicate |
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1255 |
6057 | 1256 Node* source = load_String_value(no_ctrl, string_object); |
1257 Node* sourceOffset = load_String_offset(no_ctrl, string_object); | |
1258 Node* sourceCount = load_String_length(no_ctrl, string_object); | |
0 | 1259 |
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1260 Node* target = _gvn.transform( makecon(TypeOopPtr::make_from_constant(target_array, true)) ); |
0 | 1261 jint target_length = target_array->length(); |
1262 const TypeAry* target_array_type = TypeAry::make(TypeInt::CHAR, TypeInt::make(0, target_length, Type::WidenMin)); | |
1263 const TypeAryPtr* target_type = TypeAryPtr::make(TypePtr::BotPTR, target_array_type, target_array->klass(), true, Type::OffsetBot); | |
1264 | |
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1265 IdealKit kit(this, false, true); |
0 | 1266 #define __ kit. |
1267 Node* zero = __ ConI(0); | |
1268 Node* one = __ ConI(1); | |
1269 Node* cache = __ ConI(cache_i); | |
1270 Node* md2 = __ ConI(md2_i); | |
1271 Node* lastChar = __ ConI(target_array->char_at(target_length - 1)); | |
1272 Node* targetCount = __ ConI(target_length); | |
1273 Node* targetCountLess1 = __ ConI(target_length - 1); | |
1274 Node* targetOffset = __ ConI(targetOffset_i); | |
1275 Node* sourceEnd = __ SubI(__ AddI(sourceOffset, sourceCount), targetCountLess1); | |
1276 | |
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1277 IdealVariable rtn(kit), i(kit), j(kit); __ declarations_done(); |
0 | 1278 Node* outer_loop = __ make_label(2 /* goto */); |
1279 Node* return_ = __ make_label(1); | |
1280 | |
1281 __ set(rtn,__ ConI(-1)); | |
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1282 __ loop(this, nargs, i, sourceOffset, BoolTest::lt, sourceEnd); { |
0 | 1283 Node* i2 = __ AddI(__ value(i), targetCountLess1); |
1284 // pin to prohibit loading of "next iteration" value which may SEGV (rare) | |
1285 Node* src = load_array_element(__ ctrl(), source, i2, TypeAryPtr::CHARS); | |
1286 __ if_then(src, BoolTest::eq, lastChar, unlikely); { | |
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1287 __ loop(this, nargs, j, zero, BoolTest::lt, targetCountLess1); { |
0 | 1288 Node* tpj = __ AddI(targetOffset, __ value(j)); |
1289 Node* targ = load_array_element(no_ctrl, target, tpj, target_type); | |
1290 Node* ipj = __ AddI(__ value(i), __ value(j)); | |
1291 Node* src2 = load_array_element(no_ctrl, source, ipj, TypeAryPtr::CHARS); | |
1292 __ if_then(targ, BoolTest::ne, src2); { | |
1293 __ if_then(__ AndI(cache, __ LShiftI(one, src2)), BoolTest::eq, zero); { | |
1294 __ if_then(md2, BoolTest::lt, __ AddI(__ value(j), one)); { | |
1295 __ increment(i, __ AddI(__ value(j), one)); | |
1296 __ goto_(outer_loop); | |
1297 } __ end_if(); __ dead(j); | |
1298 }__ end_if(); __ dead(j); | |
1299 __ increment(i, md2); | |
1300 __ goto_(outer_loop); | |
1301 }__ end_if(); | |
1302 __ increment(j, one); | |
1303 }__ end_loop(); __ dead(j); | |
1304 __ set(rtn, __ SubI(__ value(i), sourceOffset)); __ dead(i); | |
1305 __ goto_(return_); | |
1306 }__ end_if(); | |
1307 __ if_then(__ AndI(cache, __ LShiftI(one, src)), BoolTest::eq, zero, likely); { | |
1308 __ increment(i, targetCountLess1); | |
1309 }__ end_if(); | |
1310 __ increment(i, one); | |
1311 __ bind(outer_loop); | |
1312 }__ end_loop(); __ dead(i); | |
1313 __ bind(return_); | |
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1314 |
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1315 // Final sync IdealKit and GraphKit. |
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1316 final_sync(kit); |
0 | 1317 Node* result = __ value(rtn); |
1318 #undef __ | |
1319 C->set_has_loops(true); | |
1320 return result; | |
1321 } | |
1322 | |
1323 //------------------------------inline_string_indexOf------------------------ | |
1324 bool LibraryCallKit::inline_string_indexOf() { | |
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1325 Node* receiver = argument(0); |
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1326 Node* arg = argument(1); |
681 | 1327 |
1328 Node* result; | |
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1329 // Disable the use of pcmpestri until it can be guaranteed that |
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1330 // the load doesn't cross into the uncommited space. |
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1331 if (Matcher::has_match_rule(Op_StrIndexOf) && |
681 | 1332 UseSSE42Intrinsics) { |
1333 // Generate SSE4.2 version of indexOf | |
1334 // We currently only have match rules that use SSE4.2 | |
1335 | |
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1336 receiver = null_check(receiver); |
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1337 arg = null_check(arg); |
681 | 1338 if (stopped()) { |
1339 return true; | |
1340 } | |
1341 | |
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1342 ciInstanceKlass* str_klass = env()->String_klass(); |
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1343 const TypeOopPtr* string_type = TypeOopPtr::make_from_klass(str_klass); |
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1344 |
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1345 // Make the merge point |
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1346 RegionNode* result_rgn = new (C) RegionNode(4); |
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1347 Node* result_phi = new (C) PhiNode(result_rgn, TypeInt::INT); |
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1348 Node* no_ctrl = NULL; |
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1349 |
6057 | 1350 // Get start addr of source string |
1351 Node* source = load_String_value(no_ctrl, receiver); | |
1352 Node* source_offset = load_String_offset(no_ctrl, receiver); | |
1353 Node* source_start = array_element_address(source, source_offset, T_CHAR); | |
1354 | |
1355 // Get length of source string | |
1356 Node* source_cnt = load_String_length(no_ctrl, receiver); | |
1357 | |
1358 // Get start addr of substring | |
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1359 Node* substr = load_String_value(no_ctrl, arg); |
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1360 Node* substr_offset = load_String_offset(no_ctrl, arg); |
6057 | 1361 Node* substr_start = array_element_address(substr, substr_offset, T_CHAR); |
1362 | |
1363 // Get length of source string | |
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1364 Node* substr_cnt = load_String_length(no_ctrl, arg); |
986
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1365 |
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1366 // Check for substr count > string count |
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1367 Node* cmp = _gvn.transform( new(C) CmpINode(substr_cnt, source_cnt) ); |
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1368 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::gt) ); |
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1369 Node* if_gt = generate_slow_guard(bol, NULL); |
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1370 if (if_gt != NULL) { |
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1371 result_phi->init_req(2, intcon(-1)); |
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1372 result_rgn->init_req(2, if_gt); |
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1373 } |
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1374 |
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1375 if (!stopped()) { |
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1376 // Check for substr count == 0 |
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1377 cmp = _gvn.transform( new(C) CmpINode(substr_cnt, intcon(0)) ); |
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1378 bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::eq) ); |
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1379 Node* if_zero = generate_slow_guard(bol, NULL); |
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1380 if (if_zero != NULL) { |
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1381 result_phi->init_req(3, intcon(0)); |
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1382 result_rgn->init_req(3, if_zero); |
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1383 } |
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1384 } |
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1385 |
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1386 if (!stopped()) { |
6057 | 1387 result = make_string_method_node(Op_StrIndexOf, source_start, source_cnt, substr_start, substr_cnt); |
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1388 result_phi->init_req(1, result); |
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1389 result_rgn->init_req(1, control()); |
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1390 } |
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1391 set_control(_gvn.transform(result_rgn)); |
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1392 record_for_igvn(result_rgn); |
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1393 result = _gvn.transform(result_phi); |
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1394 |
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1395 } else { // Use LibraryCallKit::string_indexOf |
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1396 // don't intrinsify if argument isn't a constant string. |
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1397 if (!arg->is_Con()) { |
681 | 1398 return false; |
1399 } | |
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1400 const TypeOopPtr* str_type = _gvn.type(arg)->isa_oopptr(); |
681 | 1401 if (str_type == NULL) { |
1402 return false; | |
1403 } | |
1404 ciInstanceKlass* klass = env()->String_klass(); | |
1405 ciObject* str_const = str_type->const_oop(); | |
1406 if (str_const == NULL || str_const->klass() != klass) { | |
1407 return false; | |
1408 } | |
1409 ciInstance* str = str_const->as_instance(); | |
1410 assert(str != NULL, "must be instance"); | |
1411 | |
6057 | 1412 ciObject* v = str->field_value_by_offset(java_lang_String::value_offset_in_bytes()).as_object(); |
681 | 1413 ciTypeArray* pat = v->as_type_array(); // pattern (argument) character array |
1414 | |
6057 | 1415 int o; |
1416 int c; | |
1417 if (java_lang_String::has_offset_field()) { | |
1418 o = str->field_value_by_offset(java_lang_String::offset_offset_in_bytes()).as_int(); | |
1419 c = str->field_value_by_offset(java_lang_String::count_offset_in_bytes()).as_int(); | |
1420 } else { | |
1421 o = 0; | |
1422 c = pat->length(); | |
1423 } | |
1424 | |
681 | 1425 // constant strings have no offset and count == length which |
1426 // simplifies the resulting code somewhat so lets optimize for that. | |
1427 if (o != 0 || c != pat->length()) { | |
1428 return false; | |
1429 } | |
1430 | |
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1431 receiver = null_check(receiver, T_OBJECT); |
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1432 // NOTE: No null check on the argument is needed since it's a constant String oop. |
681 | 1433 if (stopped()) { |
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1434 return true; |
681 | 1435 } |
1436 | |
1437 // The null string as a pattern always returns 0 (match at beginning of string) | |
1438 if (c == 0) { | |
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1439 set_result(intcon(0)); |
681 | 1440 return true; |
1441 } | |
1442 | |
1443 // Generate default indexOf | |
1444 jchar lastChar = pat->char_at(o + (c - 1)); | |
1445 int cache = 0; | |
1446 int i; | |
1447 for (i = 0; i < c - 1; i++) { | |
1448 assert(i < pat->length(), "out of range"); | |
1449 cache |= (1 << (pat->char_at(o + i) & (sizeof(cache) * BitsPerByte - 1))); | |
1450 } | |
1451 | |
1452 int md2 = c; | |
1453 for (i = 0; i < c - 1; i++) { | |
1454 assert(i < pat->length(), "out of range"); | |
1455 if (pat->char_at(o + i) == lastChar) { | |
1456 md2 = (c - 1) - i; | |
1457 } | |
1458 } | |
1459 | |
1460 result = string_indexOf(receiver, pat, o, cache, md2); | |
0 | 1461 } |
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1462 set_result(result); |
0 | 1463 return true; |
1464 } | |
1465 | |
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1466 //--------------------------round_double_node-------------------------------- |
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1467 // Round a double node if necessary. |
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1468 Node* LibraryCallKit::round_double_node(Node* n) { |
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1469 if (Matcher::strict_fp_requires_explicit_rounding && UseSSE <= 1) |
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1470 n = _gvn.transform(new (C) RoundDoubleNode(0, n)); |
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1471 return n; |
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1472 } |
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1473 |
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1474 //------------------------------inline_math----------------------------------- |
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1475 // public static double Math.abs(double) |
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1476 // public static double Math.sqrt(double) |
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1477 // public static double Math.log(double) |
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1478 // public static double Math.log10(double) |
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1479 bool LibraryCallKit::inline_math(vmIntrinsics::ID id) { |
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1480 Node* arg = round_double_node(argument(0)); |
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1481 Node* n; |
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1482 switch (id) { |
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1483 case vmIntrinsics::_dabs: n = new (C) AbsDNode( arg); break; |
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1484 case vmIntrinsics::_dsqrt: n = new (C) SqrtDNode(C, control(), arg); break; |
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1485 case vmIntrinsics::_dlog: n = new (C) LogDNode(C, control(), arg); break; |
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1486 case vmIntrinsics::_dlog10: n = new (C) Log10DNode(C, control(), arg); break; |
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1487 default: fatal_unexpected_iid(id); break; |
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1488 } |
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1489 set_result(_gvn.transform(n)); |
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1490 return true; |
0 | 1491 } |
1492 | |
1493 //------------------------------inline_trig---------------------------------- | |
1494 // Inline sin/cos/tan instructions, if possible. If rounding is required, do | |
1495 // argument reduction which will turn into a fast/slow diamond. | |
1496 bool LibraryCallKit::inline_trig(vmIntrinsics::ID id) { | |
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1497 Node* arg = round_double_node(argument(0)); |
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1498 Node* n = NULL; |
0 | 1499 |
1500 switch (id) { | |
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1501 case vmIntrinsics::_dsin: n = new (C) SinDNode(C, control(), arg); break; |
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1502 case vmIntrinsics::_dcos: n = new (C) CosDNode(C, control(), arg); break; |
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1503 case vmIntrinsics::_dtan: n = new (C) TanDNode(C, control(), arg); break; |
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1504 default: fatal_unexpected_iid(id); break; |
0 | 1505 } |
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1506 n = _gvn.transform(n); |
0 | 1507 |
1508 // Rounding required? Check for argument reduction! | |
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1509 if (Matcher::strict_fp_requires_explicit_rounding) { |
0 | 1510 static const double pi_4 = 0.7853981633974483; |
1511 static const double neg_pi_4 = -0.7853981633974483; | |
1512 // pi/2 in 80-bit extended precision | |
1513 // static const unsigned char pi_2_bits_x[] = {0x35,0xc2,0x68,0x21,0xa2,0xda,0x0f,0xc9,0xff,0x3f,0x00,0x00,0x00,0x00,0x00,0x00}; | |
1514 // -pi/2 in 80-bit extended precision | |
1515 // 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}; | |
1516 // Cutoff value for using this argument reduction technique | |
1517 //static const double pi_2_minus_epsilon = 1.564660403643354; | |
1518 //static const double neg_pi_2_plus_epsilon = -1.564660403643354; | |
1519 | |
1520 // Pseudocode for sin: | |
1521 // if (x <= Math.PI / 4.0) { | |
1522 // if (x >= -Math.PI / 4.0) return fsin(x); | |
1523 // if (x >= -Math.PI / 2.0) return -fcos(x + Math.PI / 2.0); | |
1524 // } else { | |
1525 // if (x <= Math.PI / 2.0) return fcos(x - Math.PI / 2.0); | |
1526 // } | |
1527 // return StrictMath.sin(x); | |
1528 | |
1529 // Pseudocode for cos: | |
1530 // if (x <= Math.PI / 4.0) { | |
1531 // if (x >= -Math.PI / 4.0) return fcos(x); | |
1532 // if (x >= -Math.PI / 2.0) return fsin(x + Math.PI / 2.0); | |
1533 // } else { | |
1534 // if (x <= Math.PI / 2.0) return -fsin(x - Math.PI / 2.0); | |
1535 // } | |
1536 // return StrictMath.cos(x); | |
1537 | |
1538 // Actually, sticking in an 80-bit Intel value into C2 will be tough; it | |
1539 // requires a special machine instruction to load it. Instead we'll try | |
1540 // the 'easy' case. If we really need the extra range +/- PI/2 we'll | |
1541 // probably do the math inside the SIN encoding. | |
1542 | |
1543 // Make the merge point | |
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1544 RegionNode* r = new (C) RegionNode(3); |
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1545 Node* phi = new (C) PhiNode(r, Type::DOUBLE); |
0 | 1546 |
1547 // Flatten arg so we need only 1 test | |
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1548 Node *abs = _gvn.transform(new (C) AbsDNode(arg)); |
0 | 1549 // Node for PI/4 constant |
1550 Node *pi4 = makecon(TypeD::make(pi_4)); | |
1551 // Check PI/4 : abs(arg) | |
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1552 Node *cmp = _gvn.transform(new (C) CmpDNode(pi4,abs)); |
0 | 1553 // Check: If PI/4 < abs(arg) then go slow |
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1554 Node *bol = _gvn.transform( new (C) BoolNode( cmp, BoolTest::lt ) ); |
0 | 1555 // Branch either way |
1556 IfNode *iff = create_and_xform_if(control(),bol, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
1557 set_control(opt_iff(r,iff)); | |
1558 | |
1559 // Set fast path result | |
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1560 phi->init_req(2, n); |
0 | 1561 |
1562 // Slow path - non-blocking leaf call | |
1563 Node* call = NULL; | |
1564 switch (id) { | |
1565 case vmIntrinsics::_dsin: | |
1566 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1567 CAST_FROM_FN_PTR(address, SharedRuntime::dsin), | |
1568 "Sin", NULL, arg, top()); | |
1569 break; | |
1570 case vmIntrinsics::_dcos: | |
1571 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1572 CAST_FROM_FN_PTR(address, SharedRuntime::dcos), | |
1573 "Cos", NULL, arg, top()); | |
1574 break; | |
1575 case vmIntrinsics::_dtan: | |
1576 call = make_runtime_call(RC_LEAF, OptoRuntime::Math_D_D_Type(), | |
1577 CAST_FROM_FN_PTR(address, SharedRuntime::dtan), | |
1578 "Tan", NULL, arg, top()); | |
1579 break; | |
1580 } | |
1581 assert(control()->in(0) == call, ""); | |
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1582 Node* slow_result = _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
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1583 r->init_req(1, control()); |
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1584 phi->init_req(1, slow_result); |
0 | 1585 |
1586 // Post-merge | |
1587 set_control(_gvn.transform(r)); | |
1588 record_for_igvn(r); | |
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1589 n = _gvn.transform(phi); |
0 | 1590 |
1591 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1592 } | |
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1593 set_result(n); |
0 | 1594 return true; |
1595 } | |
1596 | |
6205 | 1597 void LibraryCallKit::finish_pow_exp(Node* result, Node* x, Node* y, const TypeFunc* call_type, address funcAddr, const char* funcName) { |
1598 //------------------- | |
1599 //result=(result.isNaN())? funcAddr():result; | |
1600 // Check: If isNaN() by checking result!=result? then either trap | |
1601 // or go to runtime | |
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1602 Node* cmpisnan = _gvn.transform(new (C) CmpDNode(result, result)); |
6205 | 1603 // Build the boolean node |
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1604 Node* bolisnum = _gvn.transform(new (C) BoolNode(cmpisnan, BoolTest::eq)); |
6205 | 1605 |
1606 if (!too_many_traps(Deoptimization::Reason_intrinsic)) { | |
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1607 { BuildCutout unless(this, bolisnum, PROB_STATIC_FREQUENT); |
6205 | 1608 // The pow or exp intrinsic returned a NaN, which requires a call |
1609 // to the runtime. Recompile with the runtime call. | |
1610 uncommon_trap(Deoptimization::Reason_intrinsic, | |
1611 Deoptimization::Action_make_not_entrant); | |
1612 } | |
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1613 set_result(result); |
6205 | 1614 } else { |
1615 // If this inlining ever returned NaN in the past, we compile a call | |
1616 // to the runtime to properly handle corner cases | |
1617 | |
1618 IfNode* iff = create_and_xform_if(control(), bolisnum, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
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1619 Node* if_slow = _gvn.transform( new (C) IfFalseNode(iff) ); |
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1620 Node* if_fast = _gvn.transform( new (C) IfTrueNode(iff) ); |
6205 | 1621 |
1622 if (!if_slow->is_top()) { | |
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1623 RegionNode* result_region = new (C) RegionNode(3); |
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1624 PhiNode* result_val = new (C) PhiNode(result_region, Type::DOUBLE); |
6205 | 1625 |
1626 result_region->init_req(1, if_fast); | |
1627 result_val->init_req(1, result); | |
1628 | |
1629 set_control(if_slow); | |
1630 | |
1631 const TypePtr* no_memory_effects = NULL; | |
1632 Node* rt = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, | |
1633 no_memory_effects, | |
1634 x, top(), y, y ? top() : NULL); | |
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1635 Node* value = _gvn.transform(new (C) ProjNode(rt, TypeFunc::Parms+0)); |
6205 | 1636 #ifdef ASSERT |
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1637 Node* value_top = _gvn.transform(new (C) ProjNode(rt, TypeFunc::Parms+1)); |
6205 | 1638 assert(value_top == top(), "second value must be top"); |
1639 #endif | |
1640 | |
1641 result_region->init_req(2, control()); | |
1642 result_val->init_req(2, value); | |
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1643 set_result(result_region, result_val); |
6205 | 1644 } else { |
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1645 set_result(result); |
6205 | 1646 } |
1647 } | |
1648 } | |
1649 | |
0 | 1650 //------------------------------inline_exp------------------------------------- |
1651 // Inline exp instructions, if possible. The Intel hardware only misses | |
1652 // really odd corner cases (+/- Infinity). Just uncommon-trap them. | |
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1653 bool LibraryCallKit::inline_exp() { |
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1654 Node* arg = round_double_node(argument(0)); |
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1655 Node* n = _gvn.transform(new (C) ExpDNode(C, control(), arg)); |
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1656 |
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1657 finish_pow_exp(n, arg, NULL, OptoRuntime::Math_D_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dexp), "EXP"); |
0 | 1658 |
1659 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1660 return true; | |
1661 } | |
1662 | |
1663 //------------------------------inline_pow------------------------------------- | |
1664 // Inline power instructions, if possible. | |
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1665 bool LibraryCallKit::inline_pow() { |
0 | 1666 // Pseudocode for pow |
1667 // if (x <= 0.0) { | |
6205 | 1668 // long longy = (long)y; |
1669 // if ((double)longy == y) { // if y is long | |
1670 // if (y + 1 == y) longy = 0; // huge number: even | |
1671 // result = ((1&longy) == 0)?-DPow(abs(x), y):DPow(abs(x), y); | |
0 | 1672 // } else { |
1673 // result = NaN; | |
1674 // } | |
1675 // } else { | |
1676 // result = DPow(x,y); | |
1677 // } | |
1678 // if (result != result)? { | |
6205 | 1679 // result = uncommon_trap() or runtime_call(); |
0 | 1680 // } |
1681 // return result; | |
1682 | |
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1683 Node* x = round_double_node(argument(0)); |
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1684 Node* y = round_double_node(argument(2)); |
0 | 1685 |
6205 | 1686 Node* result = NULL; |
1687 | |
1688 if (!too_many_traps(Deoptimization::Reason_intrinsic)) { | |
1689 // Short form: skip the fancy tests and just check for NaN result. | |
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1690 result = _gvn.transform(new (C) PowDNode(C, control(), x, y)); |
0 | 1691 } else { |
6205 | 1692 // If this inlining ever returned NaN in the past, include all |
1693 // checks + call to the runtime. | |
0 | 1694 |
1695 // Set the merge point for If node with condition of (x <= 0.0) | |
1696 // There are four possible paths to region node and phi node | |
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1697 RegionNode *r = new (C) RegionNode(4); |
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1698 Node *phi = new (C) PhiNode(r, Type::DOUBLE); |
0 | 1699 |
1700 // Build the first if node: if (x <= 0.0) | |
1701 // Node for 0 constant | |
1702 Node *zeronode = makecon(TypeD::ZERO); | |
1703 // Check x:0 | |
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1704 Node *cmp = _gvn.transform(new (C) CmpDNode(x, zeronode)); |
0 | 1705 // Check: If (x<=0) then go complex path |
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1706 Node *bol1 = _gvn.transform( new (C) BoolNode( cmp, BoolTest::le ) ); |
0 | 1707 // Branch either way |
1708 IfNode *if1 = create_and_xform_if(control(),bol1, PROB_STATIC_INFREQUENT, COUNT_UNKNOWN); | |
1709 // Fast path taken; set region slot 3 | |
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1710 Node *fast_taken = _gvn.transform( new (C) IfFalseNode(if1) ); |
0 | 1711 r->init_req(3,fast_taken); // Capture fast-control |
1712 | |
1713 // Fast path not-taken, i.e. slow path | |
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1714 Node *complex_path = _gvn.transform( new (C) IfTrueNode(if1) ); |
0 | 1715 |
1716 // Set fast path result | |
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1717 Node *fast_result = _gvn.transform( new (C) PowDNode(C, control(), x, y) ); |
0 | 1718 phi->init_req(3, fast_result); |
1719 | |
1720 // Complex path | |
6205 | 1721 // Build the second if node (if y is long) |
1722 // Node for (long)y | |
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1723 Node *longy = _gvn.transform( new (C) ConvD2LNode(y)); |
6205 | 1724 // Node for (double)((long) y) |
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1725 Node *doublelongy= _gvn.transform( new (C) ConvL2DNode(longy)); |
6205 | 1726 // Check (double)((long) y) : y |
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1727 Node *cmplongy= _gvn.transform(new (C) CmpDNode(doublelongy, y)); |
6205 | 1728 // Check if (y isn't long) then go to slow path |
1729 | |
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1730 Node *bol2 = _gvn.transform( new (C) BoolNode( cmplongy, BoolTest::ne ) ); |
605 | 1731 // Branch either way |
0 | 1732 IfNode *if2 = create_and_xform_if(complex_path,bol2, PROB_STATIC_INFREQUENT, COUNT_UNKNOWN); |
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1733 Node* ylong_path = _gvn.transform( new (C) IfFalseNode(if2)); |
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1734 |
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1735 Node *slow_path = _gvn.transform( new (C) IfTrueNode(if2) ); |
6205 | 1736 |
1737 // Calculate DPow(abs(x), y)*(1 & (long)y) | |
0 | 1738 // Node for constant 1 |
6205 | 1739 Node *conone = longcon(1); |
1740 // 1& (long)y | |
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1741 Node *signnode= _gvn.transform( new (C) AndLNode(conone, longy) ); |
6205 | 1742 |
1743 // A huge number is always even. Detect a huge number by checking | |
1744 // if y + 1 == y and set integer to be tested for parity to 0. | |
1745 // Required for corner case: | |
1746 // (long)9.223372036854776E18 = max_jlong | |
1747 // (double)(long)9.223372036854776E18 = 9.223372036854776E18 | |
1748 // max_jlong is odd but 9.223372036854776E18 is even | |
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1749 Node* yplus1 = _gvn.transform( new (C) AddDNode(y, makecon(TypeD::make(1)))); |
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1750 Node *cmpyplus1= _gvn.transform(new (C) CmpDNode(yplus1, y)); |
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1751 Node *bolyplus1 = _gvn.transform( new (C) BoolNode( cmpyplus1, BoolTest::eq ) ); |
6205 | 1752 Node* correctedsign = NULL; |
1753 if (ConditionalMoveLimit != 0) { | |
1754 correctedsign = _gvn.transform( CMoveNode::make(C, NULL, bolyplus1, signnode, longcon(0), TypeLong::LONG)); | |
1755 } else { | |
1756 IfNode *ifyplus1 = create_and_xform_if(ylong_path,bolyplus1, PROB_FAIR, COUNT_UNKNOWN); | |
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1757 RegionNode *r = new (C) RegionNode(3); |
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1758 Node *phi = new (C) PhiNode(r, TypeLong::LONG); |
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1759 r->init_req(1, _gvn.transform( new (C) IfFalseNode(ifyplus1))); |
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1760 r->init_req(2, _gvn.transform( new (C) IfTrueNode(ifyplus1))); |
6205 | 1761 phi->init_req(1, signnode); |
1762 phi->init_req(2, longcon(0)); | |
1763 correctedsign = _gvn.transform(phi); | |
1764 ylong_path = _gvn.transform(r); | |
1765 record_for_igvn(r); | |
1766 } | |
1767 | |
0 | 1768 // zero node |
6205 | 1769 Node *conzero = longcon(0); |
1770 // Check (1&(long)y)==0? | |
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1771 Node *cmpeq1 = _gvn.transform(new (C) CmpLNode(correctedsign, conzero)); |
6205 | 1772 // Check if (1&(long)y)!=0?, if so the result is negative |
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1773 Node *bol3 = _gvn.transform( new (C) BoolNode( cmpeq1, BoolTest::ne ) ); |
0 | 1774 // abs(x) |
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1775 Node *absx=_gvn.transform( new (C) AbsDNode(x)); |
0 | 1776 // abs(x)^y |
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1777 Node *absxpowy = _gvn.transform( new (C) PowDNode(C, control(), absx, y) ); |
0 | 1778 // -abs(x)^y |
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1779 Node *negabsxpowy = _gvn.transform(new (C) NegDNode (absxpowy)); |
6205 | 1780 // (1&(long)y)==1?-DPow(abs(x), y):DPow(abs(x), y) |
1781 Node *signresult = NULL; | |
1782 if (ConditionalMoveLimit != 0) { | |
1783 signresult = _gvn.transform( CMoveNode::make(C, NULL, bol3, absxpowy, negabsxpowy, Type::DOUBLE)); | |
1784 } else { | |
1785 IfNode *ifyeven = create_and_xform_if(ylong_path,bol3, PROB_FAIR, COUNT_UNKNOWN); | |
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1786 RegionNode *r = new (C) RegionNode(3); |
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1787 Node *phi = new (C) PhiNode(r, Type::DOUBLE); |
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1788 r->init_req(1, _gvn.transform( new (C) IfFalseNode(ifyeven))); |
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1789 r->init_req(2, _gvn.transform( new (C) IfTrueNode(ifyeven))); |
6205 | 1790 phi->init_req(1, absxpowy); |
1791 phi->init_req(2, negabsxpowy); | |
1792 signresult = _gvn.transform(phi); | |
1793 ylong_path = _gvn.transform(r); | |
1794 record_for_igvn(r); | |
1795 } | |
0 | 1796 // Set complex path fast result |
6205 | 1797 r->init_req(2, ylong_path); |
0 | 1798 phi->init_req(2, signresult); |
1799 | |
1800 static const jlong nan_bits = CONST64(0x7ff8000000000000); | |
1801 Node *slow_result = makecon(TypeD::make(*(double*)&nan_bits)); // return NaN | |
1802 r->init_req(1,slow_path); | |
1803 phi->init_req(1,slow_result); | |
1804 | |
1805 // Post merge | |
1806 set_control(_gvn.transform(r)); | |
1807 record_for_igvn(r); | |
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1808 result = _gvn.transform(phi); |
0 | 1809 } |
1810 | |
6205 | 1811 finish_pow_exp(result, x, y, OptoRuntime::Math_DD_D_Type(), CAST_FROM_FN_PTR(address, SharedRuntime::dpow), "POW"); |
0 | 1812 |
1813 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
1814 return true; | |
1815 } | |
1816 | |
1817 //------------------------------runtime_math----------------------------- | |
1818 bool LibraryCallKit::runtime_math(const TypeFunc* call_type, address funcAddr, const char* funcName) { | |
1819 assert(call_type == OptoRuntime::Math_DD_D_Type() || call_type == OptoRuntime::Math_D_D_Type(), | |
1820 "must be (DD)D or (D)D type"); | |
1821 | |
1822 // Inputs | |
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1823 Node* a = round_double_node(argument(0)); |
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1824 Node* b = (call_type == OptoRuntime::Math_DD_D_Type()) ? round_double_node(argument(2)) : NULL; |
0 | 1825 |
1826 const TypePtr* no_memory_effects = NULL; | |
1827 Node* trig = make_runtime_call(RC_LEAF, call_type, funcAddr, funcName, | |
1828 no_memory_effects, | |
1829 a, top(), b, b ? top() : NULL); | |
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1830 Node* value = _gvn.transform(new (C) ProjNode(trig, TypeFunc::Parms+0)); |
0 | 1831 #ifdef ASSERT |
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1832 Node* value_top = _gvn.transform(new (C) ProjNode(trig, TypeFunc::Parms+1)); |
0 | 1833 assert(value_top == top(), "second value must be top"); |
1834 #endif | |
1835 | |
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1836 set_result(value); |
0 | 1837 return true; |
1838 } | |
1839 | |
1840 //------------------------------inline_math_native----------------------------- | |
1841 bool LibraryCallKit::inline_math_native(vmIntrinsics::ID id) { | |
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1842 #define FN_PTR(f) CAST_FROM_FN_PTR(address, f) |
0 | 1843 switch (id) { |
1844 // These intrinsics are not properly supported on all hardware | |
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1845 case vmIntrinsics::_dcos: return Matcher::has_match_rule(Op_CosD) ? inline_trig(id) : |
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1846 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dcos), "COS"); |
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1847 case vmIntrinsics::_dsin: return Matcher::has_match_rule(Op_SinD) ? inline_trig(id) : |
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1848 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dsin), "SIN"); |
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1849 case vmIntrinsics::_dtan: return Matcher::has_match_rule(Op_TanD) ? inline_trig(id) : |
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1850 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dtan), "TAN"); |
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1851 |
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1852 case vmIntrinsics::_dlog: return Matcher::has_match_rule(Op_LogD) ? inline_math(id) : |
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1853 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dlog), "LOG"); |
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1854 case vmIntrinsics::_dlog10: return Matcher::has_match_rule(Op_Log10D) ? inline_math(id) : |
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1855 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dlog10), "LOG10"); |
0 | 1856 |
1857 // These intrinsics are supported on all hardware | |
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1858 case vmIntrinsics::_dsqrt: return Matcher::has_match_rule(Op_SqrtD) ? inline_math(id) : false; |
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1859 case vmIntrinsics::_dabs: return Matcher::has_match_rule(Op_AbsD) ? inline_math(id) : false; |
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1860 |
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1861 case vmIntrinsics::_dexp: return Matcher::has_match_rule(Op_ExpD) ? inline_exp() : |
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1862 runtime_math(OptoRuntime::Math_D_D_Type(), FN_PTR(SharedRuntime::dexp), "EXP"); |
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1863 case vmIntrinsics::_dpow: return Matcher::has_match_rule(Op_PowD) ? inline_pow() : |
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1864 runtime_math(OptoRuntime::Math_DD_D_Type(), FN_PTR(SharedRuntime::dpow), "POW"); |
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1865 #undef FN_PTR |
0 | 1866 |
1867 // These intrinsics are not yet correctly implemented | |
1868 case vmIntrinsics::_datan2: | |
1869 return false; | |
1870 | |
1871 default: | |
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1872 fatal_unexpected_iid(id); |
0 | 1873 return false; |
1874 } | |
1875 } | |
1876 | |
1877 static bool is_simple_name(Node* n) { | |
1878 return (n->req() == 1 // constant | |
1879 || (n->is_Type() && n->as_Type()->type()->singleton()) | |
1880 || n->is_Proj() // parameter or return value | |
1881 || n->is_Phi() // local of some sort | |
1882 ); | |
1883 } | |
1884 | |
1885 //----------------------------inline_min_max----------------------------------- | |
1886 bool LibraryCallKit::inline_min_max(vmIntrinsics::ID id) { | |
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1887 set_result(generate_min_max(id, argument(0), argument(1))); |
0 | 1888 return true; |
1889 } | |
1890 | |
1891 Node* | |
1892 LibraryCallKit::generate_min_max(vmIntrinsics::ID id, Node* x0, Node* y0) { | |
1893 // These are the candidate return value: | |
1894 Node* xvalue = x0; | |
1895 Node* yvalue = y0; | |
1896 | |
1897 if (xvalue == yvalue) { | |
1898 return xvalue; | |
1899 } | |
1900 | |
1901 bool want_max = (id == vmIntrinsics::_max); | |
1902 | |
1903 const TypeInt* txvalue = _gvn.type(xvalue)->isa_int(); | |
1904 const TypeInt* tyvalue = _gvn.type(yvalue)->isa_int(); | |
1905 if (txvalue == NULL || tyvalue == NULL) return top(); | |
1906 // This is not really necessary, but it is consistent with a | |
1907 // hypothetical MaxINode::Value method: | |
1908 int widen = MAX2(txvalue->_widen, tyvalue->_widen); | |
1909 | |
1910 // %%% This folding logic should (ideally) be in a different place. | |
1911 // Some should be inside IfNode, and there to be a more reliable | |
1912 // transformation of ?: style patterns into cmoves. We also want | |
1913 // more powerful optimizations around cmove and min/max. | |
1914 | |
1915 // Try to find a dominating comparison of these guys. | |
1916 // It can simplify the index computation for Arrays.copyOf | |
1917 // and similar uses of System.arraycopy. | |
1918 // First, compute the normalized version of CmpI(x, y). | |
1919 int cmp_op = Op_CmpI; | |
1920 Node* xkey = xvalue; | |
1921 Node* ykey = yvalue; | |
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1922 Node* ideal_cmpxy = _gvn.transform( new(C) CmpINode(xkey, ykey) ); |
0 | 1923 if (ideal_cmpxy->is_Cmp()) { |
1924 // E.g., if we have CmpI(length - offset, count), | |
1925 // it might idealize to CmpI(length, count + offset) | |
1926 cmp_op = ideal_cmpxy->Opcode(); | |
1927 xkey = ideal_cmpxy->in(1); | |
1928 ykey = ideal_cmpxy->in(2); | |
1929 } | |
1930 | |
1931 // Start by locating any relevant comparisons. | |
1932 Node* start_from = (xkey->outcnt() < ykey->outcnt()) ? xkey : ykey; | |
1933 Node* cmpxy = NULL; | |
1934 Node* cmpyx = NULL; | |
1935 for (DUIterator_Fast kmax, k = start_from->fast_outs(kmax); k < kmax; k++) { | |
1936 Node* cmp = start_from->fast_out(k); | |
1937 if (cmp->outcnt() > 0 && // must have prior uses | |
1938 cmp->in(0) == NULL && // must be context-independent | |
1939 cmp->Opcode() == cmp_op) { // right kind of compare | |
1940 if (cmp->in(1) == xkey && cmp->in(2) == ykey) cmpxy = cmp; | |
1941 if (cmp->in(1) == ykey && cmp->in(2) == xkey) cmpyx = cmp; | |
1942 } | |
1943 } | |
1944 | |
1945 const int NCMPS = 2; | |
1946 Node* cmps[NCMPS] = { cmpxy, cmpyx }; | |
1947 int cmpn; | |
1948 for (cmpn = 0; cmpn < NCMPS; cmpn++) { | |
1949 if (cmps[cmpn] != NULL) break; // find a result | |
1950 } | |
1951 if (cmpn < NCMPS) { | |
1952 // Look for a dominating test that tells us the min and max. | |
1953 int depth = 0; // Limit search depth for speed | |
1954 Node* dom = control(); | |
1955 for (; dom != NULL; dom = IfNode::up_one_dom(dom, true)) { | |
1956 if (++depth >= 100) break; | |
1957 Node* ifproj = dom; | |
1958 if (!ifproj->is_Proj()) continue; | |
1959 Node* iff = ifproj->in(0); | |
1960 if (!iff->is_If()) continue; | |
1961 Node* bol = iff->in(1); | |
1962 if (!bol->is_Bool()) continue; | |
1963 Node* cmp = bol->in(1); | |
1964 if (cmp == NULL) continue; | |
1965 for (cmpn = 0; cmpn < NCMPS; cmpn++) | |
1966 if (cmps[cmpn] == cmp) break; | |
1967 if (cmpn == NCMPS) continue; | |
1968 BoolTest::mask btest = bol->as_Bool()->_test._test; | |
1969 if (ifproj->is_IfFalse()) btest = BoolTest(btest).negate(); | |
1970 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); | |
1971 // At this point, we know that 'x btest y' is true. | |
1972 switch (btest) { | |
1973 case BoolTest::eq: | |
1974 // They are proven equal, so we can collapse the min/max. | |
1975 // Either value is the answer. Choose the simpler. | |
1976 if (is_simple_name(yvalue) && !is_simple_name(xvalue)) | |
1977 return yvalue; | |
1978 return xvalue; | |
1979 case BoolTest::lt: // x < y | |
1980 case BoolTest::le: // x <= y | |
1981 return (want_max ? yvalue : xvalue); | |
1982 case BoolTest::gt: // x > y | |
1983 case BoolTest::ge: // x >= y | |
1984 return (want_max ? xvalue : yvalue); | |
1985 } | |
1986 } | |
1987 } | |
1988 | |
1989 // We failed to find a dominating test. | |
1990 // Let's pick a test that might GVN with prior tests. | |
1991 Node* best_bol = NULL; | |
1992 BoolTest::mask best_btest = BoolTest::illegal; | |
1993 for (cmpn = 0; cmpn < NCMPS; cmpn++) { | |
1994 Node* cmp = cmps[cmpn]; | |
1995 if (cmp == NULL) continue; | |
1996 for (DUIterator_Fast jmax, j = cmp->fast_outs(jmax); j < jmax; j++) { | |
1997 Node* bol = cmp->fast_out(j); | |
1998 if (!bol->is_Bool()) continue; | |
1999 BoolTest::mask btest = bol->as_Bool()->_test._test; | |
2000 if (btest == BoolTest::eq || btest == BoolTest::ne) continue; | |
2001 if (cmp->in(1) == ykey) btest = BoolTest(btest).commute(); | |
2002 if (bol->outcnt() > (best_bol == NULL ? 0 : best_bol->outcnt())) { | |
2003 best_bol = bol->as_Bool(); | |
2004 best_btest = btest; | |
2005 } | |
2006 } | |
2007 } | |
2008 | |
2009 Node* answer_if_true = NULL; | |
2010 Node* answer_if_false = NULL; | |
2011 switch (best_btest) { | |
2012 default: | |
2013 if (cmpxy == NULL) | |
2014 cmpxy = ideal_cmpxy; | |
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2015 best_bol = _gvn.transform( new(C) BoolNode(cmpxy, BoolTest::lt) ); |
0 | 2016 // and fall through: |
2017 case BoolTest::lt: // x < y | |
2018 case BoolTest::le: // x <= y | |
2019 answer_if_true = (want_max ? yvalue : xvalue); | |
2020 answer_if_false = (want_max ? xvalue : yvalue); | |
2021 break; | |
2022 case BoolTest::gt: // x > y | |
2023 case BoolTest::ge: // x >= y | |
2024 answer_if_true = (want_max ? xvalue : yvalue); | |
2025 answer_if_false = (want_max ? yvalue : xvalue); | |
2026 break; | |
2027 } | |
2028 | |
2029 jint hi, lo; | |
2030 if (want_max) { | |
2031 // We can sharpen the minimum. | |
2032 hi = MAX2(txvalue->_hi, tyvalue->_hi); | |
2033 lo = MAX2(txvalue->_lo, tyvalue->_lo); | |
2034 } else { | |
2035 // We can sharpen the maximum. | |
2036 hi = MIN2(txvalue->_hi, tyvalue->_hi); | |
2037 lo = MIN2(txvalue->_lo, tyvalue->_lo); | |
2038 } | |
2039 | |
2040 // Use a flow-free graph structure, to avoid creating excess control edges | |
2041 // which could hinder other optimizations. | |
2042 // Since Math.min/max is often used with arraycopy, we want | |
2043 // tightly_coupled_allocation to be able to see beyond min/max expressions. | |
2044 Node* cmov = CMoveNode::make(C, NULL, best_bol, | |
2045 answer_if_false, answer_if_true, | |
2046 TypeInt::make(lo, hi, widen)); | |
2047 | |
2048 return _gvn.transform(cmov); | |
2049 | |
2050 /* | |
2051 // This is not as desirable as it may seem, since Min and Max | |
2052 // nodes do not have a full set of optimizations. | |
2053 // And they would interfere, anyway, with 'if' optimizations | |
2054 // and with CMoveI canonical forms. | |
2055 switch (id) { | |
2056 case vmIntrinsics::_min: | |
2057 result_val = _gvn.transform(new (C, 3) MinINode(x,y)); break; | |
2058 case vmIntrinsics::_max: | |
2059 result_val = _gvn.transform(new (C, 3) MaxINode(x,y)); break; | |
2060 default: | |
2061 ShouldNotReachHere(); | |
2062 } | |
2063 */ | |
2064 } | |
2065 | |
2066 inline int | |
2067 LibraryCallKit::classify_unsafe_addr(Node* &base, Node* &offset) { | |
2068 const TypePtr* base_type = TypePtr::NULL_PTR; | |
2069 if (base != NULL) base_type = _gvn.type(base)->isa_ptr(); | |
2070 if (base_type == NULL) { | |
2071 // Unknown type. | |
2072 return Type::AnyPtr; | |
2073 } else if (base_type == TypePtr::NULL_PTR) { | |
2074 // Since this is a NULL+long form, we have to switch to a rawptr. | |
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2075 base = _gvn.transform( new (C) CastX2PNode(offset) ); |
0 | 2076 offset = MakeConX(0); |
2077 return Type::RawPtr; | |
2078 } else if (base_type->base() == Type::RawPtr) { | |
2079 return Type::RawPtr; | |
2080 } else if (base_type->isa_oopptr()) { | |
2081 // Base is never null => always a heap address. | |
2082 if (base_type->ptr() == TypePtr::NotNull) { | |
2083 return Type::OopPtr; | |
2084 } | |
2085 // Offset is small => always a heap address. | |
2086 const TypeX* offset_type = _gvn.type(offset)->isa_intptr_t(); | |
2087 if (offset_type != NULL && | |
2088 base_type->offset() == 0 && // (should always be?) | |
2089 offset_type->_lo >= 0 && | |
2090 !MacroAssembler::needs_explicit_null_check(offset_type->_hi)) { | |
2091 return Type::OopPtr; | |
2092 } | |
2093 // Otherwise, it might either be oop+off or NULL+addr. | |
2094 return Type::AnyPtr; | |
2095 } else { | |
2096 // No information: | |
2097 return Type::AnyPtr; | |
2098 } | |
2099 } | |
2100 | |
2101 inline Node* LibraryCallKit::make_unsafe_address(Node* base, Node* offset) { | |
2102 int kind = classify_unsafe_addr(base, offset); | |
2103 if (kind == Type::RawPtr) { | |
2104 return basic_plus_adr(top(), base, offset); | |
2105 } else { | |
2106 return basic_plus_adr(base, offset); | |
2107 } | |
2108 } | |
2109 | |
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2110 //--------------------------inline_number_methods----------------------------- |
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2111 // inline int Integer.numberOfLeadingZeros(int) |
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2112 // inline int Long.numberOfLeadingZeros(long) |
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2113 // |
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2114 // inline int Integer.numberOfTrailingZeros(int) |
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2115 // inline int Long.numberOfTrailingZeros(long) |
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2116 // |
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2117 // inline int Integer.bitCount(int) |
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2118 // inline int Long.bitCount(long) |
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2119 // |
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2120 // inline char Character.reverseBytes(char) |
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2121 // inline short Short.reverseBytes(short) |
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2122 // inline int Integer.reverseBytes(int) |
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2123 // inline long Long.reverseBytes(long) |
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2124 bool LibraryCallKit::inline_number_methods(vmIntrinsics::ID id) { |
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2125 Node* arg = argument(0); |
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2126 Node* n; |
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2127 switch (id) { |
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2128 case vmIntrinsics::_numberOfLeadingZeros_i: n = new (C) CountLeadingZerosINode( arg); break; |
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2129 case vmIntrinsics::_numberOfLeadingZeros_l: n = new (C) CountLeadingZerosLNode( arg); break; |
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2130 case vmIntrinsics::_numberOfTrailingZeros_i: n = new (C) CountTrailingZerosINode(arg); break; |
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2131 case vmIntrinsics::_numberOfTrailingZeros_l: n = new (C) CountTrailingZerosLNode(arg); break; |
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2132 case vmIntrinsics::_bitCount_i: n = new (C) PopCountINode( arg); break; |
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2133 case vmIntrinsics::_bitCount_l: n = new (C) PopCountLNode( arg); break; |
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2134 case vmIntrinsics::_reverseBytes_c: n = new (C) ReverseBytesUSNode(0, arg); break; |
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2135 case vmIntrinsics::_reverseBytes_s: n = new (C) ReverseBytesSNode( 0, arg); break; |
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2136 case vmIntrinsics::_reverseBytes_i: n = new (C) ReverseBytesINode( 0, arg); break; |
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2137 case vmIntrinsics::_reverseBytes_l: n = new (C) ReverseBytesLNode( 0, arg); break; |
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2138 default: fatal_unexpected_iid(id); break; |
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2139 } |
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2140 set_result(_gvn.transform(n)); |
0 | 2141 return true; |
2142 } | |
2143 | |
2144 //----------------------------inline_unsafe_access---------------------------- | |
2145 | |
2146 const static BasicType T_ADDRESS_HOLDER = T_LONG; | |
2147 | |
6615
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2148 // Helper that guards and inserts a pre-barrier. |
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2149 void LibraryCallKit::insert_pre_barrier(Node* base_oop, Node* offset, |
7194
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2150 Node* pre_val, bool need_mem_bar) { |
3249
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2151 // We could be accessing the referent field of a reference object. If so, when G1 |
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2152 // is enabled, we need to log the value in the referent field in an SATB buffer. |
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2153 // This routine performs some compile time filters and generates suitable |
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2154 // runtime filters that guard the pre-barrier code. |
6615
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2155 // Also add memory barrier for non volatile load from the referent field |
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2156 // to prevent commoning of loads across safepoint. |
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2157 if (!UseG1GC && !need_mem_bar) |
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2158 return; |
3249
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|
2159 |
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|
2160 // Some compile time checks. |
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|
2161 |
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2162 // If offset is a constant, is it java_lang_ref_Reference::_reference_offset? |
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2163 const TypeX* otype = offset->find_intptr_t_type(); |
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2164 if (otype != NULL && otype->is_con() && |
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2165 otype->get_con() != java_lang_ref_Reference::referent_offset) { |
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2166 // Constant offset but not the reference_offset so just return |
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2167 return; |
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|
2168 } |
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|
2169 |
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2170 // We only need to generate the runtime guards for instances. |
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|
2171 const TypeOopPtr* btype = base_oop->bottom_type()->isa_oopptr(); |
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2172 if (btype != NULL) { |
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2173 if (btype->isa_aryptr()) { |
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2174 // Array type so nothing to do |
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|
2175 return; |
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|
2176 } |
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|
2177 |
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|
2178 const TypeInstPtr* itype = btype->isa_instptr(); |
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|
2179 if (itype != NULL) { |
6615
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2180 // Can the klass of base_oop be statically determined to be |
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2181 // _not_ a sub-class of Reference and _not_ Object? |
3249
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2182 ciKlass* klass = itype->klass(); |
6615
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2183 if ( klass->is_loaded() && |
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2184 !klass->is_subtype_of(env()->Reference_klass()) && |
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2185 !env()->Object_klass()->is_subtype_of(klass)) { |
3249
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|
2186 return; |
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|
2187 } |
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|
2188 } |
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|
2189 } |
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|
2190 |
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|
2191 // The compile time filters did not reject base_oop/offset so |
e1162778c1c8
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|
2192 // we need to generate the following runtime filters |
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|
2193 // |
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2194 // if (offset == java_lang_ref_Reference::_reference_offset) { |
6615
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2195 // if (instance_of(base, java.lang.ref.Reference)) { |
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2196 // pre_barrier(_, pre_val, ...); |
3249
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2197 // } |
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2198 // } |
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|
2199 |
7194
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2200 float likely = PROB_LIKELY( 0.999); |
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2201 float unlikely = PROB_UNLIKELY(0.999); |
3249
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2202 |
3255 | 2203 IdealKit ideal(this); |
3249
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2204 #define __ ideal. |
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|
2205 |
3254
59766fd005ff
7035117: G1: nsk/stress/jni/jnistress002 fails with assertion failure
johnc
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3252
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|
2206 Node* referent_off = __ ConX(java_lang_ref_Reference::referent_offset); |
3249
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|
2207 |
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|
2208 __ if_then(offset, BoolTest::eq, referent_off, unlikely); { |
e1162778c1c8
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|
2209 // Update graphKit memory and control from IdealKit. |
3255 | 2210 sync_kit(ideal); |
3249
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|
2211 |
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|
2212 Node* ref_klass_con = makecon(TypeKlassPtr::make(env()->Reference_klass())); |
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|
2213 Node* is_instof = gen_instanceof(base_oop, ref_klass_con); |
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|
2214 |
e1162778c1c8
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|
2215 // Update IdealKit memory and control from graphKit. |
3255 | 2216 __ sync_kit(this); |
3249
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|
2217 |
e1162778c1c8
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|
2218 Node* one = __ ConI(1); |
6615
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2219 // is_instof == 0 if base_oop == NULL |
3249
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|
2220 __ if_then(is_instof, BoolTest::eq, one, unlikely); { |
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|
2221 |
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|
2222 // Update graphKit from IdeakKit. |
3255 | 2223 sync_kit(ideal); |
3249
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|
2224 |
e1162778c1c8
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|
2225 // Use the pre-barrier to record the value in the referent field |
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|
2226 pre_barrier(false /* do_load */, |
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|
2227 __ ctrl(), |
3258
edd9b016deb6
7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment
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3255
diff
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|
2228 NULL /* obj */, NULL /* adr */, max_juint /* alias_idx */, NULL /* val */, NULL /* val_type */, |
3249
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|
2229 pre_val /* pre_val */, |
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|
2230 T_OBJECT); |
6615
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2231 if (need_mem_bar) { |
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2232 // Add memory barrier to prevent commoning reads from this field |
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2233 // across safepoint since GC can change its value. |
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2234 insert_mem_bar(Op_MemBarCPUOrder); |
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2235 } |
3249
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|
2236 // Update IdealKit from graphKit. |
3255 | 2237 __ sync_kit(this); |
3249
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|
2238 |
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|
2239 } __ end_if(); // _ref_type != ref_none |
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|
2240 } __ end_if(); // offset == referent_offset |
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|
2241 |
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|
2242 // Final sync IdealKit and GraphKit. |
3255 | 2243 final_sync(ideal); |
3249
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|
2244 #undef __ |
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|
2245 } |
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|
2246 |
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|
2247 |
0 | 2248 // Interpret Unsafe.fieldOffset cookies correctly: |
2249 extern jlong Unsafe_field_offset_to_byte_offset(jlong field_offset); | |
2250 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2251 const TypeOopPtr* LibraryCallKit::sharpen_unsafe_type(Compile::AliasType* alias_type, const TypePtr *adr_type, bool is_native_ptr) { |
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2252 // Attempt to infer a sharper value type from the offset and base type. |
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|
2253 ciKlass* sharpened_klass = NULL; |
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|
2254 |
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|
2255 // See if it is an instance field, with an object type. |
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2256 if (alias_type->field() != NULL) { |
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|
2257 assert(!is_native_ptr, "native pointer op cannot use a java address"); |
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2258 if (alias_type->field()->type()->is_klass()) { |
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|
2259 sharpened_klass = alias_type->field()->type()->as_klass(); |
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|
2260 } |
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|
2261 } |
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|
2262 |
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2263 // See if it is a narrow oop array. |
7eca5de9e0b6
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|
2264 if (adr_type->isa_aryptr()) { |
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|
2265 if (adr_type->offset() >= objArrayOopDesc::base_offset_in_bytes()) { |
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2266 const TypeOopPtr *elem_type = adr_type->is_aryptr()->elem()->isa_oopptr(); |
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2267 if (elem_type != NULL) { |
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2268 sharpened_klass = elem_type->klass(); |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2269 } |
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|
2270 } |
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|
2271 } |
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|
2272 |
6847
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|
2273 // The sharpened class might be unloaded if there is no class loader |
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|
2274 // contraint in place. |
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|
2275 if (sharpened_klass != NULL && sharpened_klass->is_loaded()) { |
6795
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|
2276 const TypeOopPtr* tjp = TypeOopPtr::make_from_klass(sharpened_klass); |
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|
2277 |
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|
2278 #ifndef PRODUCT |
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2279 if (PrintIntrinsics || PrintInlining || PrintOptoInlining) { |
6847
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|
2280 tty->print(" from base type: "); adr_type->dump(); |
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|
2281 tty->print(" sharpened value: "); tjp->dump(); |
6795
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|
2282 } |
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|
2283 #endif |
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|
2284 // Sharpen the value type. |
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|
2285 return tjp; |
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diff
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|
2286 } |
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|
2287 return NULL; |
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|
2288 } |
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|
2289 |
0 | 2290 bool LibraryCallKit::inline_unsafe_access(bool is_native_ptr, bool is_store, BasicType type, bool is_volatile) { |
2291 if (callee()->is_static()) return false; // caller must have the capability! | |
2292 | |
2293 #ifndef PRODUCT | |
2294 { | |
2295 ResourceMark rm; | |
2296 // Check the signatures. | |
7194
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2297 ciSignature* sig = callee()->signature(); |
0 | 2298 #ifdef ASSERT |
2299 if (!is_store) { | |
2300 // Object getObject(Object base, int/long offset), etc. | |
2301 BasicType rtype = sig->return_type()->basic_type(); | |
2302 if (rtype == T_ADDRESS_HOLDER && callee()->name() == ciSymbol::getAddress_name()) | |
2303 rtype = T_ADDRESS; // it is really a C void* | |
2304 assert(rtype == type, "getter must return the expected value"); | |
2305 if (!is_native_ptr) { | |
2306 assert(sig->count() == 2, "oop getter has 2 arguments"); | |
2307 assert(sig->type_at(0)->basic_type() == T_OBJECT, "getter base is object"); | |
2308 assert(sig->type_at(1)->basic_type() == T_LONG, "getter offset is correct"); | |
2309 } else { | |
2310 assert(sig->count() == 1, "native getter has 1 argument"); | |
2311 assert(sig->type_at(0)->basic_type() == T_LONG, "getter base is long"); | |
2312 } | |
2313 } else { | |
2314 // void putObject(Object base, int/long offset, Object x), etc. | |
2315 assert(sig->return_type()->basic_type() == T_VOID, "putter must not return a value"); | |
2316 if (!is_native_ptr) { | |
2317 assert(sig->count() == 3, "oop putter has 3 arguments"); | |
2318 assert(sig->type_at(0)->basic_type() == T_OBJECT, "putter base is object"); | |
2319 assert(sig->type_at(1)->basic_type() == T_LONG, "putter offset is correct"); | |
2320 } else { | |
2321 assert(sig->count() == 2, "native putter has 2 arguments"); | |
2322 assert(sig->type_at(0)->basic_type() == T_LONG, "putter base is long"); | |
2323 } | |
2324 BasicType vtype = sig->type_at(sig->count()-1)->basic_type(); | |
2325 if (vtype == T_ADDRESS_HOLDER && callee()->name() == ciSymbol::putAddress_name()) | |
2326 vtype = T_ADDRESS; // it is really a C void* | |
2327 assert(vtype == type, "putter must accept the expected value"); | |
2328 } | |
2329 #endif // ASSERT | |
2330 } | |
2331 #endif //PRODUCT | |
2332 | |
2333 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2334 | |
7194
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|
2335 Node* receiver = argument(0); // type: oop |
0 | 2336 |
2337 // Build address expression. See the code in inline_unsafe_prefetch. | |
7194
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|
2338 Node* adr; |
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|
2339 Node* heap_base_oop = top(); |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2340 Node* offset = top(); |
7194
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|
2341 Node* val; |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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|
2342 |
0 | 2343 if (!is_native_ptr) { |
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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|
2344 // The base is either a Java object or a value produced by Unsafe.staticFieldBase |
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|
2345 Node* base = argument(1); // type: oop |
0 | 2346 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset |
7194
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|
2347 offset = argument(2); // type: long |
0 | 2348 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset |
2349 // to be plain byte offsets, which are also the same as those accepted | |
2350 // by oopDesc::field_base. | |
2351 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
2352 "fieldOffset must be byte-scaled"); | |
2353 // 32-bit machines ignore the high half! | |
2354 offset = ConvL2X(offset); | |
2355 adr = make_unsafe_address(base, offset); | |
2356 heap_base_oop = base; | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
2357 val = is_store ? argument(4) : NULL; |
0 | 2358 } else { |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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|
2359 Node* ptr = argument(1); // type: long |
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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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|
2360 ptr = ConvL2X(ptr); // adjust Java long to machine word |
0 | 2361 adr = make_unsafe_address(NULL, ptr); |
7194
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|
2362 val = is_store ? argument(3) : NULL; |
0 | 2363 } |
2364 | |
2365 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2366 | |
2367 // First guess at the value type. | |
2368 const Type *value_type = Type::get_const_basic_type(type); | |
2369 | |
2370 // Try to categorize the address. If it comes up as TypeJavaPtr::BOTTOM, | |
2371 // there was not enough information to nail it down. | |
2372 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2373 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); | |
2374 | |
2375 // We will need memory barriers unless we can determine a unique | |
2376 // alias category for this reference. (Note: If for some reason | |
2377 // the barriers get omitted and the unsafe reference begins to "pollute" | |
2378 // the alias analysis of the rest of the graph, either Compile::can_alias | |
2379 // or Compile::must_alias will throw a diagnostic assert.) | |
2380 bool need_mem_bar = (alias_type->adr_type() == TypeOopPtr::BOTTOM); | |
2381 | |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2382 // If we are reading the value of the referent field of a Reference |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2383 // object (either by using Unsafe directly or through reflection) |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2384 // then, if G1 is enabled, we need to record the referent in an |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2385 // SATB log buffer using the pre-barrier mechanism. |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
2386 // Also we need to add memory barrier to prevent commoning reads |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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6266
diff
changeset
|
2387 // from this field across safepoint since GC can change its value. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
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6266
diff
changeset
|
2388 bool need_read_barrier = !is_native_ptr && !is_store && |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2389 offset != top() && heap_base_oop != top(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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2385
diff
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|
2390 |
0 | 2391 if (!is_store && type == T_OBJECT) { |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
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|
2392 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type, is_native_ptr); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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|
2393 if (tjp != NULL) { |
0 | 2394 value_type = tjp; |
2395 } | |
2396 } | |
2397 | |
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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|
2398 receiver = null_check(receiver); |
0 | 2399 if (stopped()) { |
2400 return true; | |
2401 } | |
2402 // Heap pointers get a null-check from the interpreter, | |
2403 // as a courtesy. However, this is not guaranteed by Unsafe, | |
2404 // and it is not possible to fully distinguish unintended nulls | |
2405 // from intended ones in this API. | |
2406 | |
2407 if (is_volatile) { | |
2408 // We need to emit leading and trailing CPU membars (see below) in | |
2409 // addition to memory membars when is_volatile. This is a little | |
2410 // too strong, but avoids the need to insert per-alias-type | |
2411 // volatile membars (for stores; compare Parse::do_put_xxx), which | |
605 | 2412 // we cannot do effectively here because we probably only have a |
0 | 2413 // rough approximation of type. |
2414 need_mem_bar = true; | |
2415 // For Stores, place a memory ordering barrier now. | |
2416 if (is_store) | |
2417 insert_mem_bar(Op_MemBarRelease); | |
2418 } | |
2419 | |
2420 // Memory barrier to prevent normal and 'unsafe' accesses from | |
2421 // bypassing each other. Happens after null checks, so the | |
2422 // exception paths do not take memory state from the memory barrier, | |
2423 // so there's no problems making a strong assert about mixing users | |
2424 // of safe & unsafe memory. Otherwise fails in a CTW of rt.jar | |
2425 // around 5701, class sun/reflect/UnsafeBooleanFieldAccessorImpl. | |
2426 if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder); | |
2427 | |
2428 if (!is_store) { | |
2429 Node* p = make_load(control(), adr, value_type, type, adr_type, is_volatile); | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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6894
diff
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|
2430 // load value |
0 | 2431 switch (type) { |
2432 case T_BOOLEAN: | |
2433 case T_CHAR: | |
2434 case T_BYTE: | |
2435 case T_SHORT: | |
2436 case T_INT: | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
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|
2437 case T_LONG: |
0 | 2438 case T_FLOAT: |
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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|
2439 case T_DOUBLE: |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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2385
diff
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|
2440 break; |
0 | 2441 case T_OBJECT: |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
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2385
diff
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|
2442 if (need_read_barrier) { |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
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|
2443 insert_pre_barrier(heap_base_oop, offset, p, !(is_volatile || need_mem_bar)); |
3249
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7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
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2385
diff
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|
2444 } |
0 | 2445 break; |
2446 case T_ADDRESS: | |
2447 // Cast to an int type. | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
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|
2448 p = _gvn.transform(new (C) CastP2XNode(NULL, p)); |
0 | 2449 p = ConvX2L(p); |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
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|
2450 break; |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2451 default: |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
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|
2452 fatal(err_msg_res("unexpected type %d: %s", type, type2name(type))); |
0 | 2453 break; |
2454 } | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2455 // The load node has the control of the preceding MemBarCPUOrder. All |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
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|
2456 // following nodes will have the control of the MemBarCPUOrder inserted at |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
2457 // the end of this method. So, pushing the load onto the stack at a later |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
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|
2458 // point is fine. |
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|
2459 set_result(p); |
0 | 2460 } else { |
2461 // place effect of store into memory | |
2462 switch (type) { | |
2463 case T_DOUBLE: | |
2464 val = dstore_rounding(val); | |
2465 break; | |
2466 case T_ADDRESS: | |
2467 // Repackage the long as a pointer. | |
2468 val = ConvL2X(val); | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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6795
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|
2469 val = _gvn.transform( new (C) CastX2PNode(val) ); |
0 | 2470 break; |
2471 } | |
2472 | |
2473 if (type != T_OBJECT ) { | |
2474 (void) store_to_memory(control(), adr, val, type, adr_type, is_volatile); | |
2475 } else { | |
2476 // Possibly an oop being stored to Java heap or native memory | |
2477 if (!TypePtr::NULL_PTR->higher_equal(_gvn.type(heap_base_oop))) { | |
2478 // oop to Java heap. | |
825 | 2479 (void) store_oop_to_unknown(control(), heap_base_oop, adr, adr_type, val, type); |
0 | 2480 } else { |
2481 // We can't tell at compile time if we are storing in the Java heap or outside | |
2482 // of it. So we need to emit code to conditionally do the proper type of | |
2483 // store. | |
2484 | |
2444
07acc51c1d2a
7032314: Allow to generate CallLeafNoFPNode in IdealKit
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2405
diff
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|
2485 IdealKit ideal(this); |
851
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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836
diff
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|
2486 #define __ ideal. |
0 | 2487 // QQQ who knows what probability is here?? |
851
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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836
diff
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|
2488 __ if_then(heap_base_oop, BoolTest::ne, null(), PROB_UNLIKELY(0.999)); { |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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|
2489 // Sync IdealKit and graphKit. |
2444
07acc51c1d2a
7032314: Allow to generate CallLeafNoFPNode in IdealKit
kvn
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2405
diff
changeset
|
2490 sync_kit(ideal); |
851
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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836
diff
changeset
|
2491 Node* st = store_oop_to_unknown(control(), heap_base_oop, adr, adr_type, val, type); |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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|
2492 // Update IdealKit memory. |
2444
07acc51c1d2a
7032314: Allow to generate CallLeafNoFPNode in IdealKit
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2405
diff
changeset
|
2493 __ sync_kit(this); |
851
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
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diff
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|
2494 } __ else_(); { |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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|
2495 __ store(__ ctrl(), adr, val, type, alias_type->index(), is_volatile); |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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836
diff
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|
2496 } __ end_if(); |
fc4be448891f
6851742: (EA) allocation elimination doesn't work with UseG1GC
kvn
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836
diff
changeset
|
2497 // Final sync IdealKit and GraphKit. |
2444
07acc51c1d2a
7032314: Allow to generate CallLeafNoFPNode in IdealKit
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2498 final_sync(ideal); |
851
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|
2499 #undef __ |
0 | 2500 } |
2501 } | |
2502 } | |
2503 | |
2504 if (is_volatile) { | |
2505 if (!is_store) | |
2506 insert_mem_bar(Op_MemBarAcquire); | |
2507 else | |
2508 insert_mem_bar(Op_MemBarVolatile); | |
2509 } | |
2510 | |
2511 if (need_mem_bar) insert_mem_bar(Op_MemBarCPUOrder); | |
2512 | |
2513 return true; | |
2514 } | |
2515 | |
2516 //----------------------------inline_unsafe_prefetch---------------------------- | |
2517 | |
2518 bool LibraryCallKit::inline_unsafe_prefetch(bool is_native_ptr, bool is_store, bool is_static) { | |
2519 #ifndef PRODUCT | |
2520 { | |
2521 ResourceMark rm; | |
2522 // Check the signatures. | |
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2523 ciSignature* sig = callee()->signature(); |
0 | 2524 #ifdef ASSERT |
2525 // Object getObject(Object base, int/long offset), etc. | |
2526 BasicType rtype = sig->return_type()->basic_type(); | |
2527 if (!is_native_ptr) { | |
2528 assert(sig->count() == 2, "oop prefetch has 2 arguments"); | |
2529 assert(sig->type_at(0)->basic_type() == T_OBJECT, "prefetch base is object"); | |
2530 assert(sig->type_at(1)->basic_type() == T_LONG, "prefetcha offset is correct"); | |
2531 } else { | |
2532 assert(sig->count() == 1, "native prefetch has 1 argument"); | |
2533 assert(sig->type_at(0)->basic_type() == T_LONG, "prefetch base is long"); | |
2534 } | |
2535 #endif // ASSERT | |
2536 } | |
2537 #endif // !PRODUCT | |
2538 | |
2539 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2540 | |
7194
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2541 const int idx = is_static ? 0 : 1; |
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2542 if (!is_static) { |
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2543 null_check_receiver(); |
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2544 if (stopped()) { |
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2545 return true; |
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|
2546 } |
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2547 } |
0 | 2548 |
2549 // Build address expression. See the code in inline_unsafe_access. | |
2550 Node *adr; | |
2551 if (!is_native_ptr) { | |
7194
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2552 // The base is either a Java object or a value produced by Unsafe.staticFieldBase |
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2553 Node* base = argument(idx + 0); // type: oop |
0 | 2554 // The offset is a value produced by Unsafe.staticFieldOffset or Unsafe.objectFieldOffset |
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2555 Node* offset = argument(idx + 1); // type: long |
0 | 2556 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset |
2557 // to be plain byte offsets, which are also the same as those accepted | |
2558 // by oopDesc::field_base. | |
2559 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
2560 "fieldOffset must be byte-scaled"); | |
2561 // 32-bit machines ignore the high half! | |
2562 offset = ConvL2X(offset); | |
2563 adr = make_unsafe_address(base, offset); | |
2564 } else { | |
7194
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2565 Node* ptr = argument(idx + 0); // type: long |
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2566 ptr = ConvL2X(ptr); // adjust Java long to machine word |
0 | 2567 adr = make_unsafe_address(NULL, ptr); |
2568 } | |
2569 | |
2570 // Generate the read or write prefetch | |
2571 Node *prefetch; | |
2572 if (is_store) { | |
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7193318: C2: remove number of inputs requirement from Node's new operator
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2573 prefetch = new (C) PrefetchWriteNode(i_o(), adr); |
0 | 2574 } else { |
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2575 prefetch = new (C) PrefetchReadNode(i_o(), adr); |
0 | 2576 } |
2577 prefetch->init_req(0, control()); | |
2578 set_i_o(_gvn.transform(prefetch)); | |
2579 | |
2580 return true; | |
2581 } | |
2582 | |
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2583 //----------------------------inline_unsafe_load_store---------------------------- |
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2584 // This method serves a couple of different customers (depending on LoadStoreKind): |
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2585 // |
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2586 // LS_cmpxchg: |
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2587 // public final native boolean compareAndSwapObject(Object o, long offset, Object expected, Object x); |
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2588 // public final native boolean compareAndSwapInt( Object o, long offset, int expected, int x); |
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2589 // public final native boolean compareAndSwapLong( Object o, long offset, long expected, long x); |
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2590 // |
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2591 // LS_xadd: |
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2592 // public int getAndAddInt( Object o, long offset, int delta) |
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2593 // public long getAndAddLong(Object o, long offset, long delta) |
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2594 // |
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2595 // LS_xchg: |
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2596 // int getAndSet(Object o, long offset, int newValue) |
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2597 // long getAndSet(Object o, long offset, long newValue) |
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2598 // Object getAndSet(Object o, long offset, Object newValue) |
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2599 // |
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2600 bool LibraryCallKit::inline_unsafe_load_store(BasicType type, LoadStoreKind kind) { |
0 | 2601 // This basic scheme here is the same as inline_unsafe_access, but |
2602 // differs in enough details that combining them would make the code | |
2603 // overly confusing. (This is a true fact! I originally combined | |
2604 // them, but even I was confused by it!) As much code/comments as | |
2605 // possible are retained from inline_unsafe_access though to make | |
605 | 2606 // the correspondences clearer. - dl |
0 | 2607 |
2608 if (callee()->is_static()) return false; // caller must have the capability! | |
2609 | |
2610 #ifndef PRODUCT | |
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2611 BasicType rtype; |
0 | 2612 { |
2613 ResourceMark rm; | |
7194
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2614 // Check the signatures. |
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2615 ciSignature* sig = callee()->signature(); |
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2616 rtype = sig->return_type()->basic_type(); |
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2617 if (kind == LS_xadd || kind == LS_xchg) { |
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2618 // Check the signatures. |
0 | 2619 #ifdef ASSERT |
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2620 assert(rtype == type, "get and set must return the expected type"); |
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2621 assert(sig->count() == 3, "get and set has 3 arguments"); |
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2622 assert(sig->type_at(0)->basic_type() == T_OBJECT, "get and set base is object"); |
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2623 assert(sig->type_at(1)->basic_type() == T_LONG, "get and set offset is long"); |
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2624 assert(sig->type_at(2)->basic_type() == type, "get and set must take expected type as new value/delta"); |
0 | 2625 #endif // ASSERT |
6795
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2626 } else if (kind == LS_cmpxchg) { |
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2627 // Check the signatures. |
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|
2628 #ifdef ASSERT |
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2629 assert(rtype == T_BOOLEAN, "CAS must return boolean"); |
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2630 assert(sig->count() == 4, "CAS has 4 arguments"); |
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2631 assert(sig->type_at(0)->basic_type() == T_OBJECT, "CAS base is object"); |
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2632 assert(sig->type_at(1)->basic_type() == T_LONG, "CAS offset is long"); |
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2633 #endif // ASSERT |
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|
2634 } else { |
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|
2635 ShouldNotReachHere(); |
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|
2636 } |
0 | 2637 } |
2638 #endif //PRODUCT | |
2639 | |
2640 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2641 | |
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2642 // Get arguments: |
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2643 Node* receiver = NULL; |
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2644 Node* base = NULL; |
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2645 Node* offset = NULL; |
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2646 Node* oldval = NULL; |
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2647 Node* newval = NULL; |
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2648 if (kind == LS_cmpxchg) { |
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2649 const bool two_slot_type = type2size[type] == 2; |
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2650 receiver = argument(0); // type: oop |
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2651 base = argument(1); // type: oop |
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2652 offset = argument(2); // type: long |
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2653 oldval = argument(4); // type: oop, int, or long |
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2654 newval = argument(two_slot_type ? 6 : 5); // type: oop, int, or long |
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2655 } else if (kind == LS_xadd || kind == LS_xchg){ |
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2656 receiver = argument(0); // type: oop |
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2657 base = argument(1); // type: oop |
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2658 offset = argument(2); // type: long |
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2659 oldval = NULL; |
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2660 newval = argument(4); // type: oop, int, or long |
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2661 } |
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|
2662 |
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|
2663 // Null check receiver. |
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|
2664 receiver = null_check(receiver); |
0 | 2665 if (stopped()) { |
2666 return true; | |
2667 } | |
2668 | |
2669 // Build field offset expression. | |
2670 // We currently rely on the cookies produced by Unsafe.xxxFieldOffset | |
2671 // to be plain byte offsets, which are also the same as those accepted | |
2672 // by oopDesc::field_base. | |
2673 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); | |
2674 // 32-bit machines ignore the high half of long offsets | |
2675 offset = ConvL2X(offset); | |
2676 Node* adr = make_unsafe_address(base, offset); | |
2677 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2678 | |
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2679 // For CAS, unlike inline_unsafe_access, there seems no point in |
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2680 // trying to refine types. Just use the coarse types here. |
0 | 2681 const Type *value_type = Type::get_const_basic_type(type); |
2682 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2683 assert(alias_type->index() != Compile::AliasIdxBot, "no bare pointers here"); | |
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2684 |
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2685 if (kind == LS_xchg && type == T_OBJECT) { |
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2686 const TypeOopPtr* tjp = sharpen_unsafe_type(alias_type, adr_type); |
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2687 if (tjp != NULL) { |
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2688 value_type = tjp; |
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|
2689 } |
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|
2690 } |
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|
2691 |
0 | 2692 int alias_idx = C->get_alias_index(adr_type); |
2693 | |
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2694 // Memory-model-wise, a LoadStore acts like a little synchronized |
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2695 // block, so needs barriers on each side. These don't translate |
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|
2696 // into actual barriers on most machines, but we still need rest of |
0 | 2697 // compiler to respect ordering. |
2698 | |
2699 insert_mem_bar(Op_MemBarRelease); | |
2700 insert_mem_bar(Op_MemBarCPUOrder); | |
2701 | |
2702 // 4984716: MemBars must be inserted before this | |
2703 // memory node in order to avoid a false | |
2704 // dependency which will confuse the scheduler. | |
2705 Node *mem = memory(alias_idx); | |
2706 | |
2707 // For now, we handle only those cases that actually exist: ints, | |
2708 // longs, and Object. Adding others should be straightforward. | |
6795
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6725
diff
changeset
|
2709 Node* load_store; |
0 | 2710 switch(type) { |
2711 case T_INT: | |
6795
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diff
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|
2712 if (kind == LS_xadd) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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diff
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|
2713 load_store = _gvn.transform(new (C) GetAndAddINode(control(), mem, adr, newval, adr_type)); |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2714 } else if (kind == LS_xchg) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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diff
changeset
|
2715 load_store = _gvn.transform(new (C) GetAndSetINode(control(), mem, adr, newval, adr_type)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2716 } else if (kind == LS_cmpxchg) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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6795
diff
changeset
|
2717 load_store = _gvn.transform(new (C) CompareAndSwapINode(control(), mem, adr, newval, oldval)); |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2718 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
changeset
|
2719 ShouldNotReachHere(); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2720 } |
0 | 2721 break; |
2722 case T_LONG: | |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2723 if (kind == LS_xadd) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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diff
changeset
|
2724 load_store = _gvn.transform(new (C) GetAndAddLNode(control(), mem, adr, newval, adr_type)); |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2725 } else 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
|
2726 load_store = _gvn.transform(new (C) GetAndSetLNode(control(), mem, adr, newval, adr_type)); |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
2727 } else if (kind == LS_cmpxchg) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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diff
changeset
|
2728 load_store = _gvn.transform(new (C) CompareAndSwapLNode(control(), mem, adr, newval, oldval)); |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2729 } else { |
7eca5de9e0b6
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diff
changeset
|
2730 ShouldNotReachHere(); |
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diff
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|
2731 } |
0 | 2732 break; |
2733 case T_OBJECT: | |
4894
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
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diff
changeset
|
2734 // 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
|
2735 // 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
|
2736 // 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
|
2737 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
|
2738 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
|
2739 |
b9bc6cae88f2
7143491: G1 C2 CTW: assert(p2x->outcnt() == 2) failed: expects 2 users: Xor and URShift nodes
kvn
parents:
4778
diff
changeset
|
2740 // Reference stores need a store barrier. |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2741 pre_barrier(true /* do_load*/, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
2742 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
|
2743 NULL /* pre_val*/, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
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|
2744 T_OBJECT); |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
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34
diff
changeset
|
2745 #ifdef _LP64 |
163 | 2746 if (adr->bottom_type()->is_ptr_to_narrowoop()) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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diff
changeset
|
2747 Node *newval_enc = _gvn.transform(new (C) EncodePNode(newval, newval->bottom_type()->make_narrowoop())); |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
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|
2748 if (kind == LS_xchg) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
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diff
changeset
|
2749 load_store = _gvn.transform(new (C) GetAndSetNNode(control(), mem, adr, |
6795
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diff
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|
2750 newval_enc, adr_type, value_type->make_narrowoop())); |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
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|
2751 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
changeset
|
2752 assert(kind == LS_cmpxchg, "wrong LoadStore operation"); |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
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diff
changeset
|
2753 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
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6795
diff
changeset
|
2754 load_store = _gvn.transform(new (C) CompareAndSwapNNode(control(), mem, adr, |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
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|
2755 newval_enc, oldval_enc)); |
7eca5de9e0b6
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diff
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|
2756 } |
113
ba764ed4b6f2
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34
diff
changeset
|
2757 } else |
ba764ed4b6f2
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34
diff
changeset
|
2758 #endif |
221
1e026f8da827
6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents:
174
diff
changeset
|
2759 { |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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diff
changeset
|
2760 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
|
2761 load_store = _gvn.transform(new (C) GetAndSetPNode(control(), mem, adr, newval, adr_type, value_type->is_oopptr())); |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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6725
diff
changeset
|
2762 } else { |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
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parents:
6725
diff
changeset
|
2763 assert(kind == LS_cmpxchg, "wrong LoadStore operation"); |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
2764 load_store = _gvn.transform(new (C) CompareAndSwapPNode(control(), mem, adr, newval, oldval)); |
6795
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6725
diff
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|
2765 } |
221
1e026f8da827
6710487: More than half of JDI Regression tests hang with COOPs in -Xcomp mode
kvn
parents:
174
diff
changeset
|
2766 } |
6795
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7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
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6725
diff
changeset
|
2767 post_barrier(control(), load_store, base, adr, alias_idx, newval, T_OBJECT, true); |
0 | 2768 break; |
2769 default: | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2770 fatal(err_msg_res("unexpected type %d: %s", type, type2name(type))); |
0 | 2771 break; |
2772 } | |
2773 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2774 // SCMemProjNodes represent the memory state of a LoadStore. Their |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2775 // main role is to prevent LoadStore nodes from being optimized away |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2776 // 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
|
2777 Node* proj = _gvn.transform( new (C) SCMemProjNode(load_store)); |
0 | 2778 set_memory(proj, alias_idx); |
2779 | |
2780 // Add the trailing membar surrounding the access | |
2781 insert_mem_bar(Op_MemBarCPUOrder); | |
2782 insert_mem_bar(Op_MemBarAcquire); | |
2783 | |
6795
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2784 #ifdef _LP64 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2785 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
|
2786 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
|
2787 } |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2788 #endif |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2789 |
7eca5de9e0b6
7023898: Intrinsify AtomicLongFieldUpdater.getAndIncrement()
roland
parents:
6725
diff
changeset
|
2790 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
|
2791 set_result(load_store); |
0 | 2792 return true; |
2793 } | |
2794 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2795 //----------------------------inline_unsafe_ordered_store---------------------- |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
2796 // 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
|
2797 // 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
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6894
diff
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|
2798 // public native void sun.misc.Unsafe.putOrderedLong(Object o, long offset, long x); |
0 | 2799 bool LibraryCallKit::inline_unsafe_ordered_store(BasicType type) { |
2800 // This is another variant of inline_unsafe_access, differing in | |
2801 // that it always issues store-store ("release") barrier and ensures | |
2802 // store-atomicity (which only matters for "long"). | |
2803 | |
2804 if (callee()->is_static()) return false; // caller must have the capability! | |
2805 | |
2806 #ifndef PRODUCT | |
2807 { | |
2808 ResourceMark rm; | |
2809 // Check the signatures. | |
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
|
2810 ciSignature* sig = callee()->signature(); |
0 | 2811 #ifdef ASSERT |
2812 BasicType rtype = sig->return_type()->basic_type(); | |
2813 assert(rtype == T_VOID, "must return void"); | |
2814 assert(sig->count() == 3, "has 3 arguments"); | |
2815 assert(sig->type_at(0)->basic_type() == T_OBJECT, "base is object"); | |
2816 assert(sig->type_at(1)->basic_type() == T_LONG, "offset is long"); | |
2817 #endif // ASSERT | |
2818 } | |
2819 #endif //PRODUCT | |
2820 | |
2821 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
2822 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2823 // Get arguments: |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2824 Node* receiver = argument(0); // type: oop |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
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|
2825 Node* base = argument(1); // type: oop |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2826 Node* offset = argument(2); // type: long |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2827 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
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|
2828 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2829 // Null check receiver. |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2830 receiver = null_check(receiver); |
0 | 2831 if (stopped()) { |
2832 return true; | |
2833 } | |
2834 | |
2835 // Build field offset expression. | |
2836 assert(Unsafe_field_offset_to_byte_offset(11) == 11, "fieldOffset must be byte-scaled"); | |
2837 // 32-bit machines ignore the high half of long offsets | |
2838 offset = ConvL2X(offset); | |
2839 Node* adr = make_unsafe_address(base, offset); | |
2840 const TypePtr *adr_type = _gvn.type(adr)->isa_ptr(); | |
2841 const Type *value_type = Type::get_const_basic_type(type); | |
2842 Compile::AliasType* alias_type = C->alias_type(adr_type); | |
2843 | |
2844 insert_mem_bar(Op_MemBarRelease); | |
2845 insert_mem_bar(Op_MemBarCPUOrder); | |
2846 // Ensure that the store is atomic for longs: | |
7194
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twisti
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diff
changeset
|
2847 const bool require_atomic_access = true; |
0 | 2848 Node* store; |
2849 if (type == T_OBJECT) // reference stores need a store barrier. | |
825 | 2850 store = store_oop_to_unknown(control(), base, adr, adr_type, val, type); |
0 | 2851 else { |
2852 store = store_to_memory(control(), adr, val, type, adr_type, require_atomic_access); | |
2853 } | |
2854 insert_mem_bar(Op_MemBarCPUOrder); | |
2855 return true; | |
2856 } | |
2857 | |
7425 | 2858 bool LibraryCallKit::inline_unsafe_fence(vmIntrinsics::ID id) { |
2859 // Regardless of form, don't allow previous ld/st to move down, | |
2860 // then issue acquire, release, or volatile mem_bar. | |
2861 insert_mem_bar(Op_MemBarCPUOrder); | |
2862 switch(id) { | |
2863 case vmIntrinsics::_loadFence: | |
2864 insert_mem_bar(Op_MemBarAcquire); | |
2865 return true; | |
2866 case vmIntrinsics::_storeFence: | |
2867 insert_mem_bar(Op_MemBarRelease); | |
2868 return true; | |
2869 case vmIntrinsics::_fullFence: | |
2870 insert_mem_bar(Op_MemBarVolatile); | |
2871 return true; | |
2872 default: | |
2873 fatal_unexpected_iid(id); | |
2874 return false; | |
2875 } | |
2876 } | |
2877 | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
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|
2878 //----------------------------inline_unsafe_allocate--------------------------- |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
2879 // public native Object sun.mics.Unsafe.allocateInstance(Class<?> cls); |
0 | 2880 bool LibraryCallKit::inline_unsafe_allocate() { |
2881 if (callee()->is_static()) return false; // caller must have the capability! | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
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|
2882 |
beebba0acc11
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twisti
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diff
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|
2883 null_check_receiver(); // null-check, then ignore |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
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|
2884 Node* cls = null_check(argument(1)); |
0 | 2885 if (stopped()) return true; |
2886 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
2887 Node* kls = load_klass_from_mirror(cls, false, NULL, 0); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
2888 kls = null_check(kls); |
0 | 2889 if (stopped()) return true; // argument was like int.class |
2890 | |
2891 // Note: The argument might still be an illegal value like | |
2892 // Serializable.class or Object[].class. The runtime will handle it. | |
2893 // But we must make an explicit check for initialization. | |
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2894 Node* insp = basic_plus_adr(kls, in_bytes(InstanceKlass::init_state_offset())); |
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2895 // Use T_BOOLEAN for InstanceKlass::_init_state so the compiler |
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2896 // can generate code to load it as unsigned byte. |
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2897 Node* inst = make_load(NULL, insp, TypeInt::UBYTE, T_BOOLEAN); |
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2898 Node* bits = intcon(InstanceKlass::fully_initialized); |
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2899 Node* test = _gvn.transform(new (C) SubINode(inst, bits)); |
0 | 2900 // The 'test' is non-zero if we need to take a slow path. |
2901 | |
2902 Node* obj = new_instance(kls, test); | |
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2903 set_result(obj); |
0 | 2904 return true; |
2905 } | |
2906 | |
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2907 #ifdef TRACE_HAVE_INTRINSICS |
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2908 /* |
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2909 * oop -> myklass |
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2910 * myklass->trace_id |= USED |
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2911 * return myklass->trace_id & ~0x3 |
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2912 */ |
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2913 bool LibraryCallKit::inline_native_classID() { |
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2914 null_check_receiver(); // null-check, then ignore |
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2915 Node* cls = null_check(argument(1), T_OBJECT); |
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2916 Node* kls = load_klass_from_mirror(cls, false, NULL, 0); |
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2917 kls = null_check(kls, T_OBJECT); |
6006
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2918 ByteSize offset = TRACE_ID_OFFSET; |
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2919 Node* insp = basic_plus_adr(kls, in_bytes(offset)); |
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2920 Node* tvalue = make_load(NULL, insp, TypeLong::LONG, T_LONG); |
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2921 Node* bits = longcon(~0x03l); // ignore bit 0 & 1 |
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2922 Node* andl = _gvn.transform(new (C) AndLNode(tvalue, bits)); |
6006
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2923 Node* clsused = longcon(0x01l); // set the class bit |
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2924 Node* orl = _gvn.transform(new (C) OrLNode(tvalue, clsused)); |
6006
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2925 |
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2926 const TypePtr *adr_type = _gvn.type(insp)->isa_ptr(); |
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2927 store_to_memory(control(), insp, orl, T_LONG, adr_type); |
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2928 set_result(andl); |
6006
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2929 return true; |
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|
2930 } |
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|
2931 |
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2932 bool LibraryCallKit::inline_native_threadID() { |
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|
2933 Node* tls_ptr = NULL; |
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2934 Node* cur_thr = generate_current_thread(tls_ptr); |
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2935 Node* p = basic_plus_adr(top()/*!oop*/, tls_ptr, in_bytes(JavaThread::osthread_offset())); |
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2936 Node* osthread = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS); |
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2937 p = basic_plus_adr(top()/*!oop*/, osthread, in_bytes(OSThread::thread_id_offset())); |
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2938 |
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2939 Node* threadid = NULL; |
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2940 size_t thread_id_size = OSThread::thread_id_size(); |
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2941 if (thread_id_size == (size_t) BytesPerLong) { |
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2942 threadid = ConvL2I(make_load(control(), p, TypeLong::LONG, T_LONG)); |
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2943 } else if (thread_id_size == (size_t) BytesPerInt) { |
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2944 threadid = make_load(control(), p, TypeInt::INT, T_INT); |
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2945 } else { |
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|
2946 ShouldNotReachHere(); |
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|
2947 } |
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|
2948 set_result(threadid); |
6006
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|
2949 return true; |
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|
2950 } |
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|
2951 #endif |
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2952 |
0 | 2953 //------------------------inline_native_time_funcs-------------- |
2954 // inline code for System.currentTimeMillis() and System.nanoTime() | |
2955 // these have the same type and signature | |
6006
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2956 bool LibraryCallKit::inline_native_time_funcs(address funcAddr, const char* funcName) { |
7194
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2957 const TypeFunc* tf = OptoRuntime::void_long_Type(); |
0 | 2958 const TypePtr* no_memory_effects = NULL; |
2959 Node* time = make_runtime_call(RC_LEAF, tf, funcAddr, funcName, no_memory_effects); | |
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2960 Node* value = _gvn.transform(new (C) ProjNode(time, TypeFunc::Parms+0)); |
0 | 2961 #ifdef ASSERT |
7194
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2962 Node* value_top = _gvn.transform(new (C) ProjNode(time, TypeFunc::Parms+1)); |
0 | 2963 assert(value_top == top(), "second value must be top"); |
2964 #endif | |
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2965 set_result(value); |
0 | 2966 return true; |
2967 } | |
2968 | |
2969 //------------------------inline_native_currentThread------------------ | |
2970 bool LibraryCallKit::inline_native_currentThread() { | |
2971 Node* junk = NULL; | |
7194
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|
2972 set_result(generate_current_thread(junk)); |
0 | 2973 return true; |
2974 } | |
2975 | |
2976 //------------------------inline_native_isInterrupted------------------ | |
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2977 // private native boolean java.lang.Thread.isInterrupted(boolean ClearInterrupted); |
0 | 2978 bool LibraryCallKit::inline_native_isInterrupted() { |
2979 // Add a fast path to t.isInterrupted(clear_int): | |
2980 // (t == Thread.current() && (!TLS._osthread._interrupted || !clear_int)) | |
2981 // ? TLS._osthread._interrupted : /*slow path:*/ t.isInterrupted(clear_int) | |
2982 // So, in the common case that the interrupt bit is false, | |
2983 // we avoid making a call into the VM. Even if the interrupt bit | |
2984 // is true, if the clear_int argument is false, we avoid the VM call. | |
2985 // However, if the receiver is not currentThread, we must call the VM, | |
2986 // because there must be some locking done around the operation. | |
2987 | |
2988 // We only go to the fast case code if we pass two guards. | |
2989 // Paths which do not pass are accumulated in the slow_region. | |
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2990 |
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2991 enum { |
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2992 no_int_result_path = 1, // t == Thread.current() && !TLS._osthread._interrupted |
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2993 no_clear_result_path = 2, // t == Thread.current() && TLS._osthread._interrupted && !clear_int |
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2994 slow_result_path = 3, // slow path: t.isInterrupted(clear_int) |
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2995 PATH_LIMIT |
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2996 }; |
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2997 |
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2998 // Ensure that it's not possible to move the load of TLS._osthread._interrupted flag |
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2999 // out of the function. |
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3000 insert_mem_bar(Op_MemBarCPUOrder); |
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3001 |
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3002 RegionNode* result_rgn = new (C) RegionNode(PATH_LIMIT); |
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3003 PhiNode* result_val = new (C) PhiNode(result_rgn, TypeInt::BOOL); |
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3004 |
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3005 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 3006 record_for_igvn(slow_region); |
3007 | |
3008 // (a) Receiving thread must be the current thread. | |
3009 Node* rec_thr = argument(0); | |
3010 Node* tls_ptr = NULL; | |
3011 Node* cur_thr = generate_current_thread(tls_ptr); | |
6804
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3012 Node* cmp_thr = _gvn.transform( new (C) CmpPNode(cur_thr, rec_thr) ); |
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3013 Node* bol_thr = _gvn.transform( new (C) BoolNode(cmp_thr, BoolTest::ne) ); |
0 | 3014 |
7422
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3015 generate_slow_guard(bol_thr, slow_region); |
0 | 3016 |
3017 // (b) Interrupt bit on TLS must be false. | |
3018 Node* p = basic_plus_adr(top()/*!oop*/, tls_ptr, in_bytes(JavaThread::osthread_offset())); | |
3019 Node* osthread = make_load(NULL, p, TypeRawPtr::NOTNULL, T_ADDRESS); | |
3020 p = basic_plus_adr(top()/*!oop*/, osthread, in_bytes(OSThread::interrupted_offset())); | |
7422
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3021 |
787
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|
3022 // Set the control input on the field _interrupted read to prevent it floating up. |
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3023 Node* int_bit = make_load(control(), p, TypeInt::BOOL, T_INT); |
6804
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3024 Node* cmp_bit = _gvn.transform( new (C) CmpINode(int_bit, intcon(0)) ); |
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3025 Node* bol_bit = _gvn.transform( new (C) BoolNode(cmp_bit, BoolTest::ne) ); |
0 | 3026 |
3027 IfNode* iff_bit = create_and_map_if(control(), bol_bit, PROB_UNLIKELY_MAG(3), COUNT_UNKNOWN); | |
3028 | |
3029 // First fast path: if (!TLS._interrupted) return false; | |
6804
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3030 Node* false_bit = _gvn.transform( new (C) IfFalseNode(iff_bit) ); |
0 | 3031 result_rgn->init_req(no_int_result_path, false_bit); |
3032 result_val->init_req(no_int_result_path, intcon(0)); | |
3033 | |
3034 // drop through to next case | |
6804
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|
3035 set_control( _gvn.transform(new (C) IfTrueNode(iff_bit)) ); |
0 | 3036 |
3037 // (c) Or, if interrupt bit is set and clear_int is false, use 2nd fast path. | |
3038 Node* clr_arg = argument(1); | |
6804
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3039 Node* cmp_arg = _gvn.transform( new (C) CmpINode(clr_arg, intcon(0)) ); |
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3040 Node* bol_arg = _gvn.transform( new (C) BoolNode(cmp_arg, BoolTest::ne) ); |
0 | 3041 IfNode* iff_arg = create_and_map_if(control(), bol_arg, PROB_FAIR, COUNT_UNKNOWN); |
3042 | |
3043 // Second fast path: ... else if (!clear_int) return true; | |
6804
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3044 Node* false_arg = _gvn.transform( new (C) IfFalseNode(iff_arg) ); |
0 | 3045 result_rgn->init_req(no_clear_result_path, false_arg); |
3046 result_val->init_req(no_clear_result_path, intcon(1)); | |
3047 | |
3048 // drop through to next case | |
6804
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3049 set_control( _gvn.transform(new (C) IfTrueNode(iff_arg)) ); |
0 | 3050 |
3051 // (d) Otherwise, go to the slow path. | |
3052 slow_region->add_req(control()); | |
3053 set_control( _gvn.transform(slow_region) ); | |
3054 | |
3055 if (stopped()) { | |
3056 // There is no slow path. | |
3057 result_rgn->init_req(slow_result_path, top()); | |
3058 result_val->init_req(slow_result_path, top()); | |
3059 } else { | |
3060 // non-virtual because it is a private non-static | |
3061 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_isInterrupted); | |
3062 | |
3063 Node* slow_val = set_results_for_java_call(slow_call); | |
3064 // this->control() comes from set_results_for_java_call | |
3065 | |
3066 Node* fast_io = slow_call->in(TypeFunc::I_O); | |
3067 Node* fast_mem = slow_call->in(TypeFunc::Memory); | |
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3068 |
0 | 3069 // These two phis are pre-filled with copies of of the fast IO and Memory |
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3070 PhiNode* result_mem = PhiNode::make(result_rgn, fast_mem, Type::MEMORY, TypePtr::BOTTOM); |
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3071 PhiNode* result_io = PhiNode::make(result_rgn, fast_io, Type::ABIO); |
0 | 3072 |
3073 result_rgn->init_req(slow_result_path, control()); | |
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3074 result_io ->init_req(slow_result_path, i_o()); |
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3075 result_mem->init_req(slow_result_path, reset_memory()); |
0 | 3076 result_val->init_req(slow_result_path, slow_val); |
3077 | |
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3078 set_all_memory(_gvn.transform(result_mem)); |
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3079 set_i_o( _gvn.transform(result_io)); |
0 | 3080 } |
3081 | |
3082 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
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3083 set_result(result_rgn, result_val); |
0 | 3084 return true; |
3085 } | |
3086 | |
3087 //---------------------------load_mirror_from_klass---------------------------- | |
3088 // Given a klass oop, load its java mirror (a java.lang.Class oop). | |
3089 Node* LibraryCallKit::load_mirror_from_klass(Node* klass) { | |
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3090 Node* p = basic_plus_adr(klass, in_bytes(Klass::java_mirror_offset())); |
0 | 3091 return make_load(NULL, p, TypeInstPtr::MIRROR, T_OBJECT); |
3092 } | |
3093 | |
3094 //-----------------------load_klass_from_mirror_common------------------------- | |
3095 // Given a java mirror (a java.lang.Class oop), load its corresponding klass oop. | |
3096 // Test the klass oop for null (signifying a primitive Class like Integer.TYPE), | |
3097 // and branch to the given path on the region. | |
3098 // If never_see_null, take an uncommon trap on null, so we can optimistically | |
3099 // compile for the non-null case. | |
3100 // If the region is NULL, force never_see_null = true. | |
3101 Node* LibraryCallKit::load_klass_from_mirror_common(Node* mirror, | |
3102 bool never_see_null, | |
3103 RegionNode* region, | |
3104 int null_path, | |
3105 int offset) { | |
3106 if (region == NULL) never_see_null = true; | |
3107 Node* p = basic_plus_adr(mirror, offset); | |
3108 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; | |
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3109 Node* kls = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, kls_type) ); |
0 | 3110 Node* null_ctl = top(); |
3111 kls = null_check_oop(kls, &null_ctl, never_see_null); | |
3112 if (region != NULL) { | |
3113 // Set region->in(null_path) if the mirror is a primitive (e.g, int.class). | |
3114 region->init_req(null_path, null_ctl); | |
3115 } else { | |
3116 assert(null_ctl == top(), "no loose ends"); | |
3117 } | |
3118 return kls; | |
3119 } | |
3120 | |
3121 //--------------------(inline_native_Class_query helpers)--------------------- | |
3122 // Use this for JVM_ACC_INTERFACE, JVM_ACC_IS_CLONEABLE, JVM_ACC_HAS_FINALIZER. | |
3123 // Fall through if (mods & mask) == bits, take the guard otherwise. | |
3124 Node* LibraryCallKit::generate_access_flags_guard(Node* kls, int modifier_mask, int modifier_bits, RegionNode* region) { | |
3125 // Branch around if the given klass has the given modifier bit set. | |
3126 // Like generate_guard, adds a new path onto the region. | |
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3127 Node* modp = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); |
0 | 3128 Node* mods = make_load(NULL, modp, TypeInt::INT, T_INT); |
3129 Node* mask = intcon(modifier_mask); | |
3130 Node* bits = intcon(modifier_bits); | |
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3131 Node* mbit = _gvn.transform( new (C) AndINode(mods, mask) ); |
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3132 Node* cmp = _gvn.transform( new (C) CmpINode(mbit, bits) ); |
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3133 Node* bol = _gvn.transform( new (C) BoolNode(cmp, BoolTest::ne) ); |
0 | 3134 return generate_fair_guard(bol, region); |
3135 } | |
3136 Node* LibraryCallKit::generate_interface_guard(Node* kls, RegionNode* region) { | |
3137 return generate_access_flags_guard(kls, JVM_ACC_INTERFACE, 0, region); | |
3138 } | |
3139 | |
3140 //-------------------------inline_native_Class_query------------------- | |
3141 bool LibraryCallKit::inline_native_Class_query(vmIntrinsics::ID id) { | |
3142 const Type* return_type = TypeInt::BOOL; | |
3143 Node* prim_return_value = top(); // what happens if it's a primitive class? | |
3144 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3145 bool expect_prim = false; // most of these guys expect to work on refs | |
3146 | |
3147 enum { _normal_path = 1, _prim_path = 2, PATH_LIMIT }; | |
3148 | |
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3149 Node* mirror = argument(0); |
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3150 Node* obj = top(); |
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3151 |
0 | 3152 switch (id) { |
3153 case vmIntrinsics::_isInstance: | |
3154 // nothing is an instance of a primitive type | |
3155 prim_return_value = intcon(0); | |
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3156 obj = argument(1); |
0 | 3157 break; |
3158 case vmIntrinsics::_getModifiers: | |
3159 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
3160 assert(is_power_of_2((int)JVM_ACC_WRITTEN_FLAGS+1), "change next line"); | |
3161 return_type = TypeInt::make(0, JVM_ACC_WRITTEN_FLAGS, Type::WidenMin); | |
3162 break; | |
3163 case vmIntrinsics::_isInterface: | |
3164 prim_return_value = intcon(0); | |
3165 break; | |
3166 case vmIntrinsics::_isArray: | |
3167 prim_return_value = intcon(0); | |
3168 expect_prim = true; // cf. ObjectStreamClass.getClassSignature | |
3169 break; | |
3170 case vmIntrinsics::_isPrimitive: | |
3171 prim_return_value = intcon(1); | |
3172 expect_prim = true; // obviously | |
3173 break; | |
3174 case vmIntrinsics::_getSuperclass: | |
3175 prim_return_value = null(); | |
3176 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); | |
3177 break; | |
3178 case vmIntrinsics::_getComponentType: | |
3179 prim_return_value = null(); | |
3180 return_type = TypeInstPtr::MIRROR->cast_to_ptr_type(TypePtr::BotPTR); | |
3181 break; | |
3182 case vmIntrinsics::_getClassAccessFlags: | |
3183 prim_return_value = intcon(JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); | |
3184 return_type = TypeInt::INT; // not bool! 6297094 | |
3185 break; | |
3186 default: | |
7194
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3187 fatal_unexpected_iid(id); |
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3188 break; |
0 | 3189 } |
3190 | |
3191 const TypeInstPtr* mirror_con = _gvn.type(mirror)->isa_instptr(); | |
3192 if (mirror_con == NULL) return false; // cannot happen? | |
3193 | |
3194 #ifndef PRODUCT | |
3195 if (PrintIntrinsics || PrintInlining || PrintOptoInlining) { | |
3196 ciType* k = mirror_con->java_mirror_type(); | |
3197 if (k) { | |
3198 tty->print("Inlining %s on constant Class ", vmIntrinsics::name_at(intrinsic_id())); | |
3199 k->print_name(); | |
3200 tty->cr(); | |
3201 } | |
3202 } | |
3203 #endif | |
3204 | |
3205 // Null-check the mirror, and the mirror's klass ptr (in case it is a primitive). | |
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|
3206 RegionNode* region = new (C) RegionNode(PATH_LIMIT); |
0 | 3207 record_for_igvn(region); |
6804
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3208 PhiNode* phi = new (C) PhiNode(region, return_type); |
0 | 3209 |
3210 // The mirror will never be null of Reflection.getClassAccessFlags, however | |
3211 // it may be null for Class.isInstance or Class.getModifiers. Throw a NPE | |
3212 // if it is. See bug 4774291. | |
3213 | |
3214 // For Reflection.getClassAccessFlags(), the null check occurs in | |
3215 // the wrong place; see inline_unsafe_access(), above, for a similar | |
3216 // situation. | |
7194
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|
3217 mirror = null_check(mirror); |
0 | 3218 // If mirror or obj is dead, only null-path is taken. |
3219 if (stopped()) return true; | |
3220 | |
3221 if (expect_prim) never_see_null = false; // expect nulls (meaning prims) | |
3222 | |
3223 // Now load the mirror's klass metaobject, and null-check it. | |
3224 // Side-effects region with the control path if the klass is null. | |
7194
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|
3225 Node* kls = load_klass_from_mirror(mirror, never_see_null, region, _prim_path); |
0 | 3226 // If kls is null, we have a primitive mirror. |
3227 phi->init_req(_prim_path, prim_return_value); | |
7194
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3228 if (stopped()) { set_result(region, phi); return true; } |
0 | 3229 |
3230 Node* p; // handy temp | |
3231 Node* null_ctl; | |
3232 | |
3233 // Now that we have the non-null klass, we can perform the real query. | |
3234 // For constant classes, the query will constant-fold in LoadNode::Value. | |
3235 Node* query_value = top(); | |
3236 switch (id) { | |
3237 case vmIntrinsics::_isInstance: | |
3238 // nothing is an instance of a primitive type | |
3239 query_value = gen_instanceof(obj, kls); | |
3240 break; | |
3241 | |
3242 case vmIntrinsics::_getModifiers: | |
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7118863: Move sizeof(klassOopDesc) into the *Klass::*_offset_in_bytes() functions
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|
3243 p = basic_plus_adr(kls, in_bytes(Klass::modifier_flags_offset())); |
0 | 3244 query_value = make_load(NULL, p, TypeInt::INT, T_INT); |
3245 break; | |
3246 | |
3247 case vmIntrinsics::_isInterface: | |
3248 // (To verify this code sequence, check the asserts in JVM_IsInterface.) | |
3249 if (generate_interface_guard(kls, region) != NULL) | |
3250 // A guard was added. If the guard is taken, it was an interface. | |
3251 phi->add_req(intcon(1)); | |
3252 // If we fall through, it's a plain class. | |
3253 query_value = intcon(0); | |
3254 break; | |
3255 | |
3256 case vmIntrinsics::_isArray: | |
3257 // (To verify this code sequence, check the asserts in JVM_IsArrayClass.) | |
3258 if (generate_array_guard(kls, region) != NULL) | |
3259 // A guard was added. If the guard is taken, it was an array. | |
3260 phi->add_req(intcon(1)); | |
3261 // If we fall through, it's a plain class. | |
3262 query_value = intcon(0); | |
3263 break; | |
3264 | |
3265 case vmIntrinsics::_isPrimitive: | |
3266 query_value = intcon(0); // "normal" path produces false | |
3267 break; | |
3268 | |
3269 case vmIntrinsics::_getSuperclass: | |
3270 // The rules here are somewhat unfortunate, but we can still do better | |
3271 // with random logic than with a JNI call. | |
3272 // Interfaces store null or Object as _super, but must report null. | |
3273 // Arrays store an intermediate super as _super, but must report Object. | |
3274 // Other types can report the actual _super. | |
3275 // (To verify this code sequence, check the asserts in JVM_IsInterface.) | |
3276 if (generate_interface_guard(kls, region) != NULL) | |
3277 // A guard was added. If the guard is taken, it was an interface. | |
3278 phi->add_req(null()); | |
3279 if (generate_array_guard(kls, region) != NULL) | |
3280 // A guard was added. If the guard is taken, it was an array. | |
3281 phi->add_req(makecon(TypeInstPtr::make(env()->Object_klass()->java_mirror()))); | |
3282 // If we fall through, it's a plain class. Get its _super. | |
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3283 p = basic_plus_adr(kls, in_bytes(Klass::super_offset())); |
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3284 kls = _gvn.transform( LoadKlassNode::make(_gvn, immutable_memory(), p, TypeRawPtr::BOTTOM, TypeKlassPtr::OBJECT_OR_NULL) ); |
0 | 3285 null_ctl = top(); |
3286 kls = null_check_oop(kls, &null_ctl); | |
3287 if (null_ctl != top()) { | |
3288 // If the guard is taken, Object.superClass is null (both klass and mirror). | |
3289 region->add_req(null_ctl); | |
3290 phi ->add_req(null()); | |
3291 } | |
3292 if (!stopped()) { | |
3293 query_value = load_mirror_from_klass(kls); | |
3294 } | |
3295 break; | |
3296 | |
3297 case vmIntrinsics::_getComponentType: | |
3298 if (generate_array_guard(kls, region) != NULL) { | |
3299 // Be sure to pin the oop load to the guard edge just created: | |
3300 Node* is_array_ctrl = region->in(region->req()-1); | |
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d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
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diff
changeset
|
3301 Node* cma = basic_plus_adr(kls, in_bytes(ArrayKlass::component_mirror_offset())); |
0 | 3302 Node* cmo = make_load(is_array_ctrl, cma, TypeInstPtr::MIRROR, T_OBJECT); |
3303 phi->add_req(cmo); | |
3304 } | |
3305 query_value = null(); // non-array case is null | |
3306 break; | |
3307 | |
3308 case vmIntrinsics::_getClassAccessFlags: | |
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changeset
|
3309 p = basic_plus_adr(kls, in_bytes(Klass::access_flags_offset())); |
0 | 3310 query_value = make_load(NULL, p, TypeInt::INT, T_INT); |
3311 break; | |
3312 | |
3313 default: | |
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|
3314 fatal_unexpected_iid(id); |
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|
3315 break; |
0 | 3316 } |
3317 | |
3318 // Fall-through is the normal case of a query to a real class. | |
3319 phi->init_req(1, query_value); | |
3320 region->init_req(1, control()); | |
3321 | |
3322 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
7194
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|
3323 set_result(region, phi); |
0 | 3324 return true; |
3325 } | |
3326 | |
3327 //--------------------------inline_native_subtype_check------------------------ | |
3328 // This intrinsic takes the JNI calls out of the heart of | |
3329 // UnsafeFieldAccessorImpl.set, which improves Field.set, readObject, etc. | |
3330 bool LibraryCallKit::inline_native_subtype_check() { | |
3331 // Pull both arguments off the stack. | |
3332 Node* args[2]; // two java.lang.Class mirrors: superc, subc | |
3333 args[0] = argument(0); | |
3334 args[1] = argument(1); | |
3335 Node* klasses[2]; // corresponding Klasses: superk, subk | |
3336 klasses[0] = klasses[1] = top(); | |
3337 | |
3338 enum { | |
3339 // A full decision tree on {superc is prim, subc is prim}: | |
3340 _prim_0_path = 1, // {P,N} => false | |
3341 // {P,P} & superc!=subc => false | |
3342 _prim_same_path, // {P,P} & superc==subc => true | |
3343 _prim_1_path, // {N,P} => false | |
3344 _ref_subtype_path, // {N,N} & subtype check wins => true | |
3345 _both_ref_path, // {N,N} & subtype check loses => false | |
3346 PATH_LIMIT | |
3347 }; | |
3348 | |
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3349 RegionNode* region = new (C) RegionNode(PATH_LIMIT); |
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3350 Node* phi = new (C) PhiNode(region, TypeInt::BOOL); |
0 | 3351 record_for_igvn(region); |
3352 | |
3353 const TypePtr* adr_type = TypeRawPtr::BOTTOM; // memory type of loads | |
3354 const TypeKlassPtr* kls_type = TypeKlassPtr::OBJECT_OR_NULL; | |
3355 int class_klass_offset = java_lang_Class::klass_offset_in_bytes(); | |
3356 | |
3357 // First null-check both mirrors and load each mirror's klass metaobject. | |
3358 int which_arg; | |
3359 for (which_arg = 0; which_arg <= 1; which_arg++) { | |
3360 Node* arg = args[which_arg]; | |
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|
3361 arg = null_check(arg); |
0 | 3362 if (stopped()) break; |
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changeset
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3363 args[which_arg] = arg; |
0 | 3364 |
3365 Node* p = basic_plus_adr(arg, class_klass_offset); | |
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3366 Node* kls = LoadKlassNode::make(_gvn, immutable_memory(), p, adr_type, kls_type); |
0 | 3367 klasses[which_arg] = _gvn.transform(kls); |
3368 } | |
3369 | |
3370 // Having loaded both klasses, test each for null. | |
3371 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3372 for (which_arg = 0; which_arg <= 1; which_arg++) { | |
3373 Node* kls = klasses[which_arg]; | |
3374 Node* null_ctl = top(); | |
3375 kls = null_check_oop(kls, &null_ctl, never_see_null); | |
3376 int prim_path = (which_arg == 0 ? _prim_0_path : _prim_1_path); | |
3377 region->init_req(prim_path, null_ctl); | |
3378 if (stopped()) break; | |
3379 klasses[which_arg] = kls; | |
3380 } | |
3381 | |
3382 if (!stopped()) { | |
3383 // now we have two reference types, in klasses[0..1] | |
3384 Node* subk = klasses[1]; // the argument to isAssignableFrom | |
3385 Node* superk = klasses[0]; // the receiver | |
3386 region->set_req(_both_ref_path, gen_subtype_check(subk, superk)); | |
3387 // now we have a successful reference subtype check | |
3388 region->set_req(_ref_subtype_path, control()); | |
3389 } | |
3390 | |
3391 // If both operands are primitive (both klasses null), then | |
3392 // we must return true when they are identical primitives. | |
3393 // It is convenient to test this after the first null klass check. | |
3394 set_control(region->in(_prim_0_path)); // go back to first null check | |
3395 if (!stopped()) { | |
3396 // Since superc is primitive, make a guard for the superc==subc case. | |
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changeset
|
3397 Node* cmp_eq = _gvn.transform( new (C) CmpPNode(args[0], args[1]) ); |
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3398 Node* bol_eq = _gvn.transform( new (C) BoolNode(cmp_eq, BoolTest::eq) ); |
0 | 3399 generate_guard(bol_eq, region, PROB_FAIR); |
3400 if (region->req() == PATH_LIMIT+1) { | |
3401 // A guard was added. If the added guard is taken, superc==subc. | |
3402 region->swap_edges(PATH_LIMIT, _prim_same_path); | |
3403 region->del_req(PATH_LIMIT); | |
3404 } | |
3405 region->set_req(_prim_0_path, control()); // Not equal after all. | |
3406 } | |
3407 | |
3408 // these are the only paths that produce 'true': | |
3409 phi->set_req(_prim_same_path, intcon(1)); | |
3410 phi->set_req(_ref_subtype_path, intcon(1)); | |
3411 | |
3412 // pull together the cases: | |
3413 assert(region->req() == PATH_LIMIT, "sane region"); | |
3414 for (uint i = 1; i < region->req(); i++) { | |
3415 Node* ctl = region->in(i); | |
3416 if (ctl == NULL || ctl == top()) { | |
3417 region->set_req(i, top()); | |
3418 phi ->set_req(i, top()); | |
3419 } else if (phi->in(i) == NULL) { | |
3420 phi->set_req(i, intcon(0)); // all other paths produce 'false' | |
3421 } | |
3422 } | |
3423 | |
3424 set_control(_gvn.transform(region)); | |
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3425 set_result(_gvn.transform(phi)); |
0 | 3426 return true; |
3427 } | |
3428 | |
3429 //---------------------generate_array_guard_common------------------------ | |
3430 Node* LibraryCallKit::generate_array_guard_common(Node* kls, RegionNode* region, | |
3431 bool obj_array, bool not_array) { | |
3432 // If obj_array/non_array==false/false: | |
3433 // Branch around if the given klass is in fact an array (either obj or prim). | |
3434 // If obj_array/non_array==false/true: | |
3435 // Branch around if the given klass is not an array klass of any kind. | |
3436 // If obj_array/non_array==true/true: | |
3437 // Branch around if the kls is not an oop array (kls is int[], String, etc.) | |
3438 // If obj_array/non_array==true/false: | |
3439 // Branch around if the kls is an oop array (Object[] or subtype) | |
3440 // | |
3441 // Like generate_guard, adds a new path onto the region. | |
3442 jint layout_con = 0; | |
3443 Node* layout_val = get_layout_helper(kls, layout_con); | |
3444 if (layout_val == NULL) { | |
3445 bool query = (obj_array | |
3446 ? Klass::layout_helper_is_objArray(layout_con) | |
6725
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3447 : Klass::layout_helper_is_array(layout_con)); |
0 | 3448 if (query == not_array) { |
3449 return NULL; // never a branch | |
3450 } else { // always a branch | |
3451 Node* always_branch = control(); | |
3452 if (region != NULL) | |
3453 region->add_req(always_branch); | |
3454 set_control(top()); | |
3455 return always_branch; | |
3456 } | |
3457 } | |
3458 // Now test the correct condition. | |
3459 jint nval = (obj_array | |
3460 ? ((jint)Klass::_lh_array_tag_type_value | |
3461 << Klass::_lh_array_tag_shift) | |
3462 : Klass::_lh_neutral_value); | |
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3463 Node* cmp = _gvn.transform( new(C) CmpINode(layout_val, intcon(nval)) ); |
0 | 3464 BoolTest::mask btest = BoolTest::lt; // correct for testing is_[obj]array |
3465 // invert the test if we are looking for a non-array | |
3466 if (not_array) btest = BoolTest(btest).negate(); | |
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3467 Node* bol = _gvn.transform( new(C) BoolNode(cmp, btest) ); |
0 | 3468 return generate_fair_guard(bol, region); |
3469 } | |
3470 | |
3471 | |
3472 //-----------------------inline_native_newArray-------------------------- | |
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3473 // private static native Object java.lang.reflect.newArray(Class<?> componentType, int length); |
0 | 3474 bool LibraryCallKit::inline_native_newArray() { |
3475 Node* mirror = argument(0); | |
3476 Node* count_val = argument(1); | |
3477 | |
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3478 mirror = null_check(mirror); |
163 | 3479 // If mirror or obj is dead, only null-path is taken. |
3480 if (stopped()) return true; | |
0 | 3481 |
3482 enum { _normal_path = 1, _slow_path = 2, PATH_LIMIT }; | |
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3483 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
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3484 PhiNode* result_val = new(C) PhiNode(result_reg, |
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3485 TypeInstPtr::NOTNULL); |
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3486 PhiNode* result_io = new(C) PhiNode(result_reg, Type::ABIO); |
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3487 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
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3488 TypePtr::BOTTOM); |
0 | 3489 |
3490 bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check); | |
3491 Node* klass_node = load_array_klass_from_mirror(mirror, never_see_null, | |
3492 result_reg, _slow_path); | |
3493 Node* normal_ctl = control(); | |
3494 Node* no_array_ctl = result_reg->in(_slow_path); | |
3495 | |
3496 // Generate code for the slow case. We make a call to newArray(). | |
3497 set_control(no_array_ctl); | |
3498 if (!stopped()) { | |
3499 // Either the input type is void.class, or else the | |
3500 // array klass has not yet been cached. Either the | |
3501 // ensuing call will throw an exception, or else it | |
3502 // will cache the array klass for next time. | |
3503 PreserveJVMState pjvms(this); | |
3504 CallJavaNode* slow_call = generate_method_call_static(vmIntrinsics::_newArray); | |
3505 Node* slow_result = set_results_for_java_call(slow_call); | |
3506 // this->control() comes from set_results_for_java_call | |
3507 result_reg->set_req(_slow_path, control()); | |
3508 result_val->set_req(_slow_path, slow_result); | |
3509 result_io ->set_req(_slow_path, i_o()); | |
3510 result_mem->set_req(_slow_path, reset_memory()); | |
3511 } | |
3512 | |
3513 set_control(normal_ctl); | |
3514 if (!stopped()) { | |
3515 // Normal case: The array type has been cached in the java.lang.Class. | |
3516 // The following call works fine even if the array type is polymorphic. | |
3517 // It could be a dynamic mix of int[], boolean[], Object[], etc. | |
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3518 Node* obj = new_array(klass_node, count_val, 0); // no arguments to push |
0 | 3519 result_reg->init_req(_normal_path, control()); |
3520 result_val->init_req(_normal_path, obj); | |
3521 result_io ->init_req(_normal_path, i_o()); | |
3522 result_mem->init_req(_normal_path, reset_memory()); | |
3523 } | |
3524 | |
3525 // Return the combined state. | |
3526 set_i_o( _gvn.transform(result_io) ); | |
3527 set_all_memory( _gvn.transform(result_mem) ); | |
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3528 |
0 | 3529 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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3530 set_result(result_reg, result_val); |
0 | 3531 return true; |
3532 } | |
3533 | |
3534 //----------------------inline_native_getLength-------------------------- | |
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3535 // public static native int java.lang.reflect.Array.getLength(Object array); |
0 | 3536 bool LibraryCallKit::inline_native_getLength() { |
3537 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; | |
3538 | |
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3539 Node* array = null_check(argument(0)); |
0 | 3540 // If array is dead, only null-path is taken. |
3541 if (stopped()) return true; | |
3542 | |
3543 // Deoptimize if it is a non-array. | |
3544 Node* non_array = generate_non_array_guard(load_object_klass(array), NULL); | |
3545 | |
3546 if (non_array != NULL) { | |
3547 PreserveJVMState pjvms(this); | |
3548 set_control(non_array); | |
3549 uncommon_trap(Deoptimization::Reason_intrinsic, | |
3550 Deoptimization::Action_maybe_recompile); | |
3551 } | |
3552 | |
3553 // If control is dead, only non-array-path is taken. | |
3554 if (stopped()) return true; | |
3555 | |
3556 // The works fine even if the array type is polymorphic. | |
3557 // It could be a dynamic mix of int[], boolean[], Object[], etc. | |
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3558 Node* result = load_array_length(array); |
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3559 |
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3560 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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3561 set_result(result); |
0 | 3562 return true; |
3563 } | |
3564 | |
3565 //------------------------inline_array_copyOf---------------------------- | |
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3566 // public static <T,U> T[] java.util.Arrays.copyOf( U[] original, int newLength, Class<? extends T[]> newType); |
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3567 // public static <T,U> T[] java.util.Arrays.copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType); |
0 | 3568 bool LibraryCallKit::inline_array_copyOf(bool is_copyOfRange) { |
3569 if (too_many_traps(Deoptimization::Reason_intrinsic)) return false; | |
3570 | |
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3571 // Get the arguments. |
0 | 3572 Node* original = argument(0); |
3573 Node* start = is_copyOfRange? argument(1): intcon(0); | |
3574 Node* end = is_copyOfRange? argument(2): argument(1); | |
3575 Node* array_type_mirror = is_copyOfRange? argument(3): argument(2); | |
3576 | |
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3577 Node* newcopy; |
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3578 |
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3579 // Set the original stack and the reexecute bit for the interpreter to reexecute |
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3580 // the bytecode that invokes Arrays.copyOf if deoptimization happens. |
902
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3581 { PreserveReexecuteState preexecs(this); |
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3582 jvms()->set_should_reexecute(true); |
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3583 |
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3584 array_type_mirror = null_check(array_type_mirror); |
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3585 original = null_check(original); |
902
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3586 |
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3587 // Check if a null path was taken unconditionally. |
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3588 if (stopped()) return true; |
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|
3589 |
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3590 Node* orig_length = load_array_length(original); |
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3591 |
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3592 Node* klass_node = load_klass_from_mirror(array_type_mirror, false, NULL, 0); |
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3593 klass_node = null_check(klass_node); |
902
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3594 |
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3595 RegionNode* bailout = new (C) RegionNode(1); |
902
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3596 record_for_igvn(bailout); |
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|
3597 |
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3598 // Despite the generic type of Arrays.copyOf, the mirror might be int, int[], etc. |
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3599 // Bail out if that is so. |
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3600 Node* not_objArray = generate_non_objArray_guard(klass_node, bailout); |
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3601 if (not_objArray != NULL) { |
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3602 // Improve the klass node's type from the new optimistic assumption: |
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3603 ciKlass* ak = ciArrayKlass::make(env()->Object_klass()); |
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3604 const Type* akls = TypeKlassPtr::make(TypePtr::NotNull, ak, 0/*offset*/); |
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3605 Node* cast = new (C) CastPPNode(klass_node, akls); |
902
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|
3606 cast->init_req(0, control()); |
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3607 klass_node = _gvn.transform(cast); |
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|
3608 } |
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|
3609 |
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3610 // Bail out if either start or end is negative. |
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|
3611 generate_negative_guard(start, bailout, &start); |
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3612 generate_negative_guard(end, bailout, &end); |
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|
3613 |
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|
3614 Node* length = end; |
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|
3615 if (_gvn.type(start) != TypeInt::ZERO) { |
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3616 length = _gvn.transform(new (C) SubINode(end, start)); |
902
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|
3617 } |
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|
3618 |
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|
3619 // Bail out if length is negative. |
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|
3620 // Without this the new_array would throw |
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|
3621 // NegativeArraySizeException but IllegalArgumentException is what |
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|
3622 // should be thrown |
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|
3623 generate_negative_guard(length, bailout, &length); |
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|
3624 |
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|
3625 if (bailout->req() > 1) { |
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|
3626 PreserveJVMState pjvms(this); |
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3627 set_control(_gvn.transform(bailout)); |
902
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|
3628 uncommon_trap(Deoptimization::Reason_intrinsic, |
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|
3629 Deoptimization::Action_maybe_recompile); |
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|
3630 } |
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3631 |
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3632 if (!stopped()) { |
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3633 // How many elements will we copy from the original? |
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3634 // The answer is MinI(orig_length - start, length). |
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3635 Node* orig_tail = _gvn.transform(new (C) SubINode(orig_length, start)); |
900
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3636 Node* moved = generate_min_max(vmIntrinsics::_min, orig_tail, length); |
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3637 |
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3638 newcopy = new_array(klass_node, length, 0); // no argments to push |
900
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3639 |
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3640 // Generate a direct call to the right arraycopy function(s). |
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3641 // We know the copy is disjoint but we might not know if the |
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3642 // oop stores need checking. |
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3643 // Extreme case: Arrays.copyOf((Integer[])x, 10, String[].class). |
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3644 // This will fail a store-check if x contains any non-nulls. |
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3645 bool disjoint_bases = true; |
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3646 // if start > orig_length then the length of the copy may be |
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3647 // negative. |
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3648 bool length_never_negative = !is_copyOfRange; |
900
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3649 generate_arraycopy(TypeAryPtr::OOPS, T_OBJECT, |
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3650 original, start, newcopy, intcon(0), moved, |
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3651 disjoint_bases, length_never_negative); |
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3652 } |
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3653 } // original reexecute is set back here |
0 | 3654 |
3655 C->set_has_split_ifs(true); // Has chance for split-if optimization | |
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3656 if (!stopped()) { |
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3657 set_result(newcopy); |
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3658 } |
0 | 3659 return true; |
3660 } | |
3661 | |
3662 | |
3663 //----------------------generate_virtual_guard--------------------------- | |
3664 // Helper for hashCode and clone. Peeks inside the vtable to avoid a call. | |
3665 Node* LibraryCallKit::generate_virtual_guard(Node* obj_klass, | |
3666 RegionNode* slow_region) { | |
3667 ciMethod* method = callee(); | |
3668 int vtable_index = method->vtable_index(); | |
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3669 // Get the Method* out of the appropriate vtable entry. |
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3670 int entry_offset = (InstanceKlass::vtable_start_offset() + |
0 | 3671 vtable_index*vtableEntry::size()) * wordSize + |
3672 vtableEntry::method_offset_in_bytes(); | |
3673 Node* entry_addr = basic_plus_adr(obj_klass, entry_offset); | |
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3674 Node* target_call = make_load(NULL, entry_addr, TypePtr::NOTNULL, T_ADDRESS); |
0 | 3675 |
3676 // Compare the target method with the expected method (e.g., Object.hashCode). | |
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3677 const TypePtr* native_call_addr = TypeMetadataPtr::make(method); |
0 | 3678 |
3679 Node* native_call = makecon(native_call_addr); | |
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3680 Node* chk_native = _gvn.transform( new(C) CmpPNode(target_call, native_call) ); |
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3681 Node* test_native = _gvn.transform( new(C) BoolNode(chk_native, BoolTest::ne) ); |
0 | 3682 |
3683 return generate_slow_guard(test_native, slow_region); | |
3684 } | |
3685 | |
3686 //-----------------------generate_method_call---------------------------- | |
3687 // Use generate_method_call to make a slow-call to the real | |
3688 // method if the fast path fails. An alternative would be to | |
3689 // use a stub like OptoRuntime::slow_arraycopy_Java. | |
3690 // This only works for expanding the current library call, | |
3691 // not another intrinsic. (E.g., don't use this for making an | |
3692 // arraycopy call inside of the copyOf intrinsic.) | |
3693 CallJavaNode* | |
3694 LibraryCallKit::generate_method_call(vmIntrinsics::ID method_id, bool is_virtual, bool is_static) { | |
3695 // When compiling the intrinsic method itself, do not use this technique. | |
3696 guarantee(callee() != C->method(), "cannot make slow-call to self"); | |
3697 | |
3698 ciMethod* method = callee(); | |
3699 // ensure the JVMS we have will be correct for this call | |
3700 guarantee(method_id == method->intrinsic_id(), "must match"); | |
3701 | |
3702 const TypeFunc* tf = TypeFunc::make(method); | |
3703 CallJavaNode* slow_call; | |
3704 if (is_static) { | |
3705 assert(!is_virtual, ""); | |
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3706 slow_call = new(C) CallStaticJavaNode(tf, |
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3707 SharedRuntime::get_resolve_static_call_stub(), |
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3708 method, bci()); |
0 | 3709 } else if (is_virtual) { |
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3710 null_check_receiver(); |
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3711 int vtable_index = Method::invalid_vtable_index; |
0 | 3712 if (UseInlineCaches) { |
3713 // Suppress the vtable call | |
3714 } else { | |
3715 // hashCode and clone are not a miranda methods, | |
3716 // so the vtable index is fixed. | |
3717 // No need to use the linkResolver to get it. | |
3718 vtable_index = method->vtable_index(); | |
3719 } | |
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3720 slow_call = new(C) CallDynamicJavaNode(tf, |
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3721 SharedRuntime::get_resolve_virtual_call_stub(), |
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3722 method, vtable_index, bci()); |
0 | 3723 } else { // neither virtual nor static: opt_virtual |
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3724 null_check_receiver(); |
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|
3725 slow_call = new(C) CallStaticJavaNode(tf, |
0 | 3726 SharedRuntime::get_resolve_opt_virtual_call_stub(), |
3727 method, bci()); | |
3728 slow_call->set_optimized_virtual(true); | |
3729 } | |
3730 set_arguments_for_java_call(slow_call); | |
3731 set_edges_for_java_call(slow_call); | |
3732 return slow_call; | |
3733 } | |
3734 | |
3735 | |
3736 //------------------------------inline_native_hashcode-------------------- | |
3737 // Build special case code for calls to hashCode on an object. | |
3738 bool LibraryCallKit::inline_native_hashcode(bool is_virtual, bool is_static) { | |
3739 assert(is_static == callee()->is_static(), "correct intrinsic selection"); | |
3740 assert(!(is_virtual && is_static), "either virtual, special, or static"); | |
3741 | |
3742 enum { _slow_path = 1, _fast_path, _null_path, PATH_LIMIT }; | |
3743 | |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
3744 RegionNode* result_reg = new(C) RegionNode(PATH_LIMIT); |
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7193318: C2: remove number of inputs requirement from Node's new operator
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3745 PhiNode* result_val = new(C) PhiNode(result_reg, |
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|
3746 TypeInt::INT); |
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|
3747 PhiNode* result_io = new(C) PhiNode(result_reg, Type::ABIO); |
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3748 PhiNode* result_mem = new(C) PhiNode(result_reg, Type::MEMORY, |
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|
3749 TypePtr::BOTTOM); |
0 | 3750 Node* obj = NULL; |
3751 if (!is_static) { | |
3752 // Check for hashing null object | |
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|
3753 obj = null_check_receiver(); |
0 | 3754 if (stopped()) return true; // unconditionally null |
3755 result_reg->init_req(_null_path, top()); | |
3756 result_val->init_req(_null_path, top()); | |
3757 } else { | |
3758 // Do a null check, and return zero if null. | |
3759 // System.identityHashCode(null) == 0 | |
3760 obj = argument(0); | |
3761 Node* null_ctl = top(); | |
3762 obj = null_check_oop(obj, &null_ctl); | |
3763 result_reg->init_req(_null_path, null_ctl); | |
3764 result_val->init_req(_null_path, _gvn.intcon(0)); | |
3765 } | |
3766 | |
3767 // Unconditionally null? Then return right away. | |
3768 if (stopped()) { | |
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|
3769 set_control( result_reg->in(_null_path)); |
0 | 3770 if (!stopped()) |
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|
3771 set_result(result_val->in(_null_path)); |
0 | 3772 return true; |
3773 } | |
3774 | |
3775 // After null check, get the object's klass. | |
3776 Node* obj_klass = load_object_klass(obj); | |
3777 | |
3778 // This call may be virtual (invokevirtual) or bound (invokespecial). | |
3779 // For each case we generate slightly different code. | |
3780 | |
3781 // We only go to the fast case code if we pass a number of guards. The | |
3782 // paths which do not pass are accumulated in the slow_region. | |
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|
3783 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 3784 record_for_igvn(slow_region); |
3785 | |
3786 // If this is a virtual call, we generate a funny guard. We pull out | |
3787 // the vtable entry corresponding to hashCode() from the target object. | |
3788 // If the target method which we are calling happens to be the native | |
3789 // Object hashCode() method, we pass the guard. We do not need this | |
3790 // guard for non-virtual calls -- the caller is known to be the native | |
3791 // Object hashCode(). | |
3792 if (is_virtual) { | |
3793 generate_virtual_guard(obj_klass, slow_region); | |
3794 } | |
3795 | |
3796 // Get the header out of the object, use LoadMarkNode when available | |
3797 Node* header_addr = basic_plus_adr(obj, oopDesc::mark_offset_in_bytes()); | |
1609 | 3798 Node* header = make_load(control(), header_addr, TypeX_X, TypeX_X->basic_type()); |
0 | 3799 |
3800 // Test the header to see if it is unlocked. | |
3801 Node *lock_mask = _gvn.MakeConX(markOopDesc::biased_lock_mask_in_place); | |
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|
3802 Node *lmasked_header = _gvn.transform( new (C) AndXNode(header, lock_mask) ); |
0 | 3803 Node *unlocked_val = _gvn.MakeConX(markOopDesc::unlocked_value); |
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3804 Node *chk_unlocked = _gvn.transform( new (C) CmpXNode( lmasked_header, unlocked_val)); |
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3805 Node *test_unlocked = _gvn.transform( new (C) BoolNode( chk_unlocked, BoolTest::ne) ); |
0 | 3806 |
3807 generate_slow_guard(test_unlocked, slow_region); | |
3808 | |
3809 // Get the hash value and check to see that it has been properly assigned. | |
3810 // We depend on hash_mask being at most 32 bits and avoid the use of | |
3811 // hash_mask_in_place because it could be larger than 32 bits in a 64-bit | |
3812 // vm: see markOop.hpp. | |
3813 Node *hash_mask = _gvn.intcon(markOopDesc::hash_mask); | |
3814 Node *hash_shift = _gvn.intcon(markOopDesc::hash_shift); | |
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3815 Node *hshifted_header= _gvn.transform( new (C) URShiftXNode(header, hash_shift) ); |
0 | 3816 // This hack lets the hash bits live anywhere in the mark object now, as long |
605 | 3817 // as the shift drops the relevant bits into the low 32 bits. Note that |
0 | 3818 // Java spec says that HashCode is an int so there's no point in capturing |
3819 // an 'X'-sized hashcode (32 in 32-bit build or 64 in 64-bit build). | |
3820 hshifted_header = ConvX2I(hshifted_header); | |
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|
3821 Node *hash_val = _gvn.transform( new (C) AndINode(hshifted_header, hash_mask) ); |
0 | 3822 |
3823 Node *no_hash_val = _gvn.intcon(markOopDesc::no_hash); | |
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|
3824 Node *chk_assigned = _gvn.transform( new (C) CmpINode( hash_val, no_hash_val)); |
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3825 Node *test_assigned = _gvn.transform( new (C) BoolNode( chk_assigned, BoolTest::eq) ); |
0 | 3826 |
3827 generate_slow_guard(test_assigned, slow_region); | |
3828 | |
3829 Node* init_mem = reset_memory(); | |
3830 // fill in the rest of the null path: | |
3831 result_io ->init_req(_null_path, i_o()); | |
3832 result_mem->init_req(_null_path, init_mem); | |
3833 | |
3834 result_val->init_req(_fast_path, hash_val); | |
3835 result_reg->init_req(_fast_path, control()); | |
3836 result_io ->init_req(_fast_path, i_o()); | |
3837 result_mem->init_req(_fast_path, init_mem); | |
3838 | |
3839 // Generate code for the slow case. We make a call to hashCode(). | |
3840 set_control(_gvn.transform(slow_region)); | |
3841 if (!stopped()) { | |
3842 // No need for PreserveJVMState, because we're using up the present state. | |
3843 set_all_memory(init_mem); | |
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3844 vmIntrinsics::ID hashCode_id = is_static ? vmIntrinsics::_identityHashCode : vmIntrinsics::_hashCode; |
0 | 3845 CallJavaNode* slow_call = generate_method_call(hashCode_id, is_virtual, is_static); |
3846 Node* slow_result = set_results_for_java_call(slow_call); | |
3847 // this->control() comes from set_results_for_java_call | |
3848 result_reg->init_req(_slow_path, control()); | |
3849 result_val->init_req(_slow_path, slow_result); | |
3850 result_io ->set_req(_slow_path, i_o()); | |
3851 result_mem ->set_req(_slow_path, reset_memory()); | |
3852 } | |
3853 | |
3854 // Return the combined state. | |
3855 set_i_o( _gvn.transform(result_io) ); | |
3856 set_all_memory( _gvn.transform(result_mem) ); | |
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|
3857 |
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|
3858 set_result(result_reg, result_val); |
0 | 3859 return true; |
3860 } | |
3861 | |
3862 //---------------------------inline_native_getClass---------------------------- | |
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3863 // public final native Class<?> java.lang.Object.getClass(); |
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3864 // |
605 | 3865 // Build special case code for calls to getClass on an object. |
0 | 3866 bool LibraryCallKit::inline_native_getClass() { |
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3867 Node* obj = null_check_receiver(); |
0 | 3868 if (stopped()) return true; |
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3869 set_result(load_mirror_from_klass(load_object_klass(obj))); |
0 | 3870 return true; |
3871 } | |
3872 | |
3873 //-----------------inline_native_Reflection_getCallerClass--------------------- | |
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3874 // public static native Class<?> sun.reflect.Reflection.getCallerClass(); |
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|
3875 // |
0 | 3876 // In the presence of deep enough inlining, getCallerClass() becomes a no-op. |
3877 // | |
8866
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3878 // NOTE: This code must perform the same logic as JVM_GetCallerClass |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3879 // in that it must skip particular security frames and checks for |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3880 // caller sensitive methods. |
0 | 3881 bool LibraryCallKit::inline_native_Reflection_getCallerClass() { |
3882 #ifndef PRODUCT | |
3883 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
3884 tty->print_cr("Attempting to inline sun.reflect.Reflection.getCallerClass"); | |
3885 } | |
3886 #endif | |
3887 | |
3888 if (!jvms()->has_method()) { | |
3889 #ifndef PRODUCT | |
3890 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
3891 tty->print_cr(" Bailing out because intrinsic was inlined at top level"); | |
3892 } | |
3893 #endif | |
3894 return false; | |
3895 } | |
3896 | |
3897 // Walk back up the JVM state to find the caller at the required | |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3898 // depth. |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3899 JVMState* caller_jvms = jvms(); |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3900 |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3901 // Cf. JVM_GetCallerClass |
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3902 // NOTE: Start the loop at depth 1 because the current JVM state does |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3903 // not include the Reflection.getCallerClass() frame. |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3904 for (int n = 1; caller_jvms != NULL; caller_jvms = caller_jvms->caller(), n++) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3905 ciMethod* m = caller_jvms->method(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3906 switch (n) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3907 case 0: |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3908 fatal("current JVM state does not include the Reflection.getCallerClass frame"); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3909 break; |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3910 case 1: |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3911 // Frame 0 and 1 must be caller sensitive (see JVM_GetCallerClass). |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
3912 if (!m->caller_sensitive()) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3913 #ifndef PRODUCT |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3914 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3915 tty->print_cr(" Bailing out: CallerSensitive annotation expected at frame %d", n); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3916 } |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
3917 #endif |
16885e702c88
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|
3918 return false; // bail-out; let JVM_GetCallerClass do the work |
0 | 3919 } |
8866
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3920 break; |
16885e702c88
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|
3921 default: |
16885e702c88
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changeset
|
3922 if (!m->is_ignored_by_security_stack_walk()) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3923 // We have reached the desired frame; return the holder class. |
16885e702c88
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|
3924 // Acquire method holder as java.lang.Class and push as constant. |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
3925 ciInstanceKlass* caller_klass = caller_jvms->method()->holder(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3926 ciInstance* caller_mirror = caller_klass->java_mirror(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3927 set_result(makecon(TypeInstPtr::make(caller_mirror))); |
16885e702c88
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|
3928 |
0 | 3929 #ifndef PRODUCT |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3930 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3931 tty->print_cr(" Succeeded: caller = %d) %s.%s, JVMS depth = %d", n, caller_klass->name()->as_utf8(), caller_jvms->method()->name()->as_utf8(), jvms()->depth()); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3932 tty->print_cr(" JVM state at this point:"); |
16885e702c88
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|
3933 for (int i = jvms()->depth(), n = 1; i >= 1; i--, n++) { |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3934 ciMethod* m = jvms()->of_depth(i)->method(); |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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3935 tty->print_cr(" %d) %s.%s", n, m->holder()->name()->as_utf8(), m->name()->as_utf8()); |
16885e702c88
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|
3936 } |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3937 } |
0 | 3938 #endif |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3939 return true; |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3940 } |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
changeset
|
3941 break; |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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diff
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|
3942 } |
0 | 3943 } |
3944 | |
3945 #ifndef PRODUCT | |
3946 if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) { | |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
3947 tty->print_cr(" Bailing out because caller depth exceeded inlining depth = %d", jvms()->depth()); |
0 | 3948 tty->print_cr(" JVM state at this point:"); |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
3949 for (int i = jvms()->depth(), n = 1; i >= 1; i--, n++) { |
7194
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|
3950 ciMethod* m = jvms()->of_depth(i)->method(); |
8866
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7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3951 tty->print_cr(" %d) %s.%s", n, m->holder()->name()->as_utf8(), m->name()->as_utf8()); |
0 | 3952 } |
3953 } | |
3954 #endif | |
8866
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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changeset
|
3955 |
16885e702c88
7198429: need checked categorization of caller-sensitive methods in the JDK
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|
3956 return false; // bail-out; let JVM_GetCallerClass do the work |
0 | 3957 } |
3958 | |
3959 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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|
3960 Node* arg = argument(0); |
beebba0acc11
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|
3961 Node* result; |
0 | 3962 |
3963 switch (id) { | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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3964 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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3965 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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|
3966 case vmIntrinsics::_doubleToRawLongBits: result = new (C) MoveD2LNode(arg); break; |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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|
3967 case vmIntrinsics::_longBitsToDouble: result = new (C) MoveL2DNode(arg); break; |
0 | 3968 |
3969 case vmIntrinsics::_doubleToLongBits: { | |
3970 // 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
|
3971 RegionNode *r = new (C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
3972 Node *phi = new (C) PhiNode(r, TypeLong::LONG); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
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diff
changeset
|
3973 |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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changeset
|
3974 Node *cmpisnan = _gvn.transform(new (C) CmpDNode(arg, arg)); |
0 | 3975 // Build the boolean node |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
3976 Node *bolisnan = _gvn.transform(new (C) BoolNode(cmpisnan, BoolTest::ne)); |
0 | 3977 |
3978 // Branch either way. | |
3979 // NaN case is less traveled, which makes all the difference. | |
3980 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
3981 Node *opt_isnan = _gvn.transform(ifisnan); | |
3982 assert( opt_isnan->is_If(), "Expect an IfNode"); | |
3983 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
|
3984 Node *iftrue = _gvn.transform( new (C) IfTrueNode(opt_ifisnan) ); |
0 | 3985 |
3986 set_control(iftrue); | |
3987 | |
3988 static const jlong nan_bits = CONST64(0x7ff8000000000000); | |
3989 Node *slow_result = longcon(nan_bits); // return NaN | |
3990 phi->init_req(1, _gvn.transform( slow_result )); | |
3991 r->init_req(1, iftrue); | |
3992 | |
3993 // Else fall through | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
3994 Node *iffalse = _gvn.transform(new (C) IfFalseNode(opt_ifisnan)); |
0 | 3995 set_control(iffalse); |
3996 | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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changeset
|
3997 phi->init_req(2, _gvn.transform(new (C) MoveD2LNode(arg))); |
0 | 3998 r->init_req(2, iffalse); |
3999 | |
4000 // Post merge | |
4001 set_control(_gvn.transform(r)); | |
4002 record_for_igvn(r); | |
4003 | |
7194
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changeset
|
4004 C->set_has_split_ifs(true); // Has chance for split-if optimization |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
4005 result = phi; |
0 | 4006 assert(result->bottom_type()->isa_long(), "must be"); |
4007 break; | |
4008 } | |
4009 | |
4010 case vmIntrinsics::_floatToIntBits: { | |
4011 // 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
|
4012 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
|
4013 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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changeset
|
4014 |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
4015 Node *cmpisnan = _gvn.transform(new (C) CmpFNode(arg, arg)); |
0 | 4016 // 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
|
4017 Node *bolisnan = _gvn.transform(new (C) BoolNode(cmpisnan, BoolTest::ne)); |
0 | 4018 |
4019 // Branch either way. | |
4020 // NaN case is less traveled, which makes all the difference. | |
4021 IfNode *ifisnan = create_and_xform_if(control(), bolisnan, PROB_STATIC_FREQUENT, COUNT_UNKNOWN); | |
4022 Node *opt_isnan = _gvn.transform(ifisnan); | |
4023 assert( opt_isnan->is_If(), "Expect an IfNode"); | |
4024 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
|
4025 Node *iftrue = _gvn.transform( new (C) IfTrueNode(opt_ifisnan) ); |
0 | 4026 |
4027 set_control(iftrue); | |
4028 | |
4029 static const jint nan_bits = 0x7fc00000; | |
4030 Node *slow_result = makecon(TypeInt::make(nan_bits)); // return NaN | |
4031 phi->init_req(1, _gvn.transform( slow_result )); | |
4032 r->init_req(1, iftrue); | |
4033 | |
4034 // Else fall through | |
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
|
4035 Node *iffalse = _gvn.transform(new (C) IfFalseNode(opt_ifisnan)); |
0 | 4036 set_control(iffalse); |
4037 | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4038 phi->init_req(2, _gvn.transform(new (C) MoveF2INode(arg))); |
0 | 4039 r->init_req(2, iffalse); |
4040 | |
4041 // Post merge | |
4042 set_control(_gvn.transform(r)); | |
4043 record_for_igvn(r); | |
4044 | |
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
|
4045 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
|
4046 result = phi; |
0 | 4047 assert(result->bottom_type()->isa_int(), "must be"); |
4048 break; | |
4049 } | |
4050 | |
4051 default: | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4052 fatal_unexpected_iid(id); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4053 break; |
0 | 4054 } |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4055 set_result(_gvn.transform(result)); |
0 | 4056 return true; |
4057 } | |
4058 | |
4059 #ifdef _LP64 | |
4060 #define XTOP ,top() /*additional argument*/ | |
4061 #else //_LP64 | |
4062 #define XTOP /*no additional argument*/ | |
4063 #endif //_LP64 | |
4064 | |
4065 //----------------------inline_unsafe_copyMemory------------------------- | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4066 // public native void sun.misc.Unsafe.copyMemory(Object srcBase, long srcOffset, Object destBase, long destOffset, long bytes); |
0 | 4067 bool LibraryCallKit::inline_unsafe_copyMemory() { |
4068 if (callee()->is_static()) return false; // caller must have the capability! | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4069 null_check_receiver(); // null-check receiver |
0 | 4070 if (stopped()) return true; |
4071 | |
4072 C->set_has_unsafe_access(true); // Mark eventual nmethod as "unsafe". | |
4073 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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6894
diff
changeset
|
4074 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
|
4075 Node* src_off = ConvL2X(argument(2)); // type: long |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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diff
changeset
|
4076 Node* dst_ptr = argument(4); // type: oop |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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diff
changeset
|
4077 Node* dst_off = ConvL2X(argument(5)); // type: long |
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
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changeset
|
4078 Node* size = ConvL2X(argument(7)); // type: long |
0 | 4079 |
4080 assert(Unsafe_field_offset_to_byte_offset(11) == 11, | |
4081 "fieldOffset must be byte-scaled"); | |
4082 | |
4083 Node* src = make_unsafe_address(src_ptr, src_off); | |
4084 Node* dst = make_unsafe_address(dst_ptr, dst_off); | |
4085 | |
4086 // Conservatively insert a memory barrier on all memory slices. | |
4087 // Do not let writes of the copy source or destination float below the copy. | |
4088 insert_mem_bar(Op_MemBarCPUOrder); | |
4089 | |
4090 // Call it. Note that the length argument is not scaled. | |
4091 make_runtime_call(RC_LEAF|RC_NO_FP, | |
4092 OptoRuntime::fast_arraycopy_Type(), | |
4093 StubRoutines::unsafe_arraycopy(), | |
4094 "unsafe_arraycopy", | |
4095 TypeRawPtr::BOTTOM, | |
4096 src, dst, size XTOP); | |
4097 | |
4098 // Do not let reads of the copy destination float above the copy. | |
4099 insert_mem_bar(Op_MemBarCPUOrder); | |
4100 | |
4101 return true; | |
4102 } | |
4103 | |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4104 //------------------------clone_coping----------------------------------- |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4105 // 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
|
4106 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
|
4107 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
|
4108 Node* raw_obj = alloc_obj->in(1); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4109 assert(alloc_obj->is_CheckCastPP() && raw_obj->is_Proj() && raw_obj->in(0)->is_Allocate(), ""); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4110 |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4111 AllocateNode* alloc = NULL; |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4112 if (ReduceBulkZeroing) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4113 // We will be completely responsible for initializing this object - |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4114 // mark Initialize node as complete. |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4115 alloc = AllocateNode::Ideal_allocation(alloc_obj, &_gvn); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4116 // 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
|
4117 guarantee(alloc != NULL && alloc->maybe_set_complete(&_gvn), ""); |
4763
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4118 // Mark as complete_with_arraycopy so that on AllocateNode |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4119 // expansion, we know this AllocateNode is initialized by an array |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4120 // 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
|
4121 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
|
4122 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4123 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4124 // Copy the fastest available way. |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4125 // 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
|
4126 Node* src = obj; |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4127 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
|
4128 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
|
4129 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4130 // 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
|
4131 // 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
|
4132 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
|
4133 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
|
4134 // base_off: |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4135 // 8 - 32-bit VM |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4136 // 12 - 64-bit VM, compressed klass |
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4137 // 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
|
4138 if (base_off % BytesPerLong != 0) { |
6848
8e47bac5643a
7054512: Compress class pointers after perm gen removal
roland
parents:
6847
diff
changeset
|
4139 assert(UseCompressedKlassPointers, ""); |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4140 if (is_array) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4141 // 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
|
4142 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
|
4143 } else { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4144 // 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
|
4145 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
|
4146 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4147 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
|
4148 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4149 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
|
4150 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
|
4151 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4152 // 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
|
4153 Node* countx = size; |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4154 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
|
4155 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
|
4156 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4157 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
|
4158 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
|
4159 generate_unchecked_arraycopy(raw_adr_type, T_LONG, disjoint_bases, |
2324 | 4160 src, NULL, dest, NULL, countx, |
4161 /*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
|
4162 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4163 // 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
|
4164 if (card_mark) { |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4165 assert(!is_array, ""); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4166 // 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
|
4167 // 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
|
4168 // 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
|
4169 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
|
4170 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
|
4171 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
|
4172 post_barrier(control(), |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4173 memory(raw_adr_type), |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4174 alloc_obj, |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4175 no_particular_field, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4176 raw_adr_idx, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4177 no_particular_value, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4178 T_OBJECT, |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4179 false); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4180 } |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4181 |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4182 // 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
|
4183 if (alloc != NULL) { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4184 // 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
|
4185 // 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
|
4186 // other threads. |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4187 // 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
|
4188 // 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
|
4189 // AllocateNode and eliminate the MemBarStoreStoreNode if possible |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4190 // 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
|
4191 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
|
4192 } else { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4193 insert_mem_bar(Op_MemBarCPUOrder); |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4194 } |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4195 } |
0 | 4196 |
4197 //------------------------inline_native_clone---------------------------- | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4198 // 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
|
4199 // |
0 | 4200 // Here are the simple edge cases: |
4201 // null receiver => normal trap | |
4202 // virtual and clone was overridden => slow path to out-of-line clone | |
4203 // not cloneable or finalizer => slow path to out-of-line Object.clone | |
4204 // | |
4205 // The general case has two steps, allocation and copying. | |
4206 // Allocation has two cases, and uses GraphKit::new_instance or new_array. | |
4207 // | |
4208 // Copying also has two cases, oop arrays and everything else. | |
4209 // Oop arrays use arrayof_oop_arraycopy (same as System.arraycopy). | |
4210 // Everything else uses the tight inline loop supplied by CopyArrayNode. | |
4211 // | |
4212 // These steps fold up nicely if and when the cloned object's klass | |
4213 // can be sharply typed as an object array, a type array, or an instance. | |
4214 // | |
4215 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
|
4216 PhiNode* result_val; |
0 | 4217 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4218 // 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
|
4219 // 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
|
4220 { PreserveReexecuteState preexecs(this); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4221 jvms()->set_should_reexecute(true); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4222 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4223 Node* obj = null_check_receiver(); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4224 if (stopped()) return true; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4225 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4226 Node* obj_klass = load_object_klass(obj); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4227 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
|
4228 const TypeOopPtr* toop = ((tklass != NULL) |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4229 ? tklass->as_instance_type() |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4230 : TypeInstPtr::NOTNULL); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4231 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4232 // 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
|
4233 // 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
|
4234 insert_mem_bar(Op_MemBarCPUOrder); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4235 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4236 // paths into result_reg: |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4237 enum { |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4238 _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
|
4239 _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
|
4240 _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
|
4241 _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
|
4242 PATH_LIMIT |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4243 }; |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4244 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
|
4245 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
|
4246 TypeInstPtr::NOTNULL); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4247 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
|
4248 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
|
4249 TypePtr::BOTTOM); |
902
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4250 record_for_igvn(result_reg); |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4251 |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4252 const TypePtr* raw_adr_type = TypeRawPtr::BOTTOM; |
fc2281ddce3c
6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
cfang
parents:
900
diff
changeset
|
4253 int raw_adr_idx = Compile::AliasIdxRaw; |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4254 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4255 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
|
4256 if (array_ctl != NULL) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4257 // It's an array. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4258 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4259 set_control(array_ctl); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4260 Node* obj_length = load_array_length(obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4261 Node* obj_size = NULL; |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4262 Node* alloc_obj = new_array(obj_klass, obj_length, 0, &obj_size); // no arguments to push |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4263 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4264 if (!use_ReduceInitialCardMarks()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4265 // If it is an oop array, it requires very special treatment, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4266 // because card marking is required on each card of the array. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4267 Node* is_obja = generate_objArray_guard(obj_klass, (RegionNode*)NULL); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4268 if (is_obja != NULL) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4269 PreserveJVMState pjvms2(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4270 set_control(is_obja); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4271 // Generate a direct call to the right arraycopy function(s). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4272 bool disjoint_bases = true; |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4273 bool length_never_negative = true; |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4274 generate_arraycopy(TypeAryPtr::OOPS, T_OBJECT, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4275 obj, intcon(0), alloc_obj, intcon(0), |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4276 obj_length, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4277 disjoint_bases, length_never_negative); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4278 result_reg->init_req(_objArray_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4279 result_val->init_req(_objArray_path, alloc_obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4280 result_i_o ->set_req(_objArray_path, i_o()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4281 result_mem ->set_req(_objArray_path, reset_memory()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4282 } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4283 } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4284 // 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
|
4285 // (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
|
4286 // comes out of eden (TLAB)... In fact, ReduceInitialCardMarks |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
986
diff
changeset
|
4287 // 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
|
4288 // simulate a fresh allocation, so that no further |
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
986
diff
changeset
|
4289 // 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
|
4290 // the object.) |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4291 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4292 if (!stopped()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4293 copy_to_clone(obj, alloc_obj, obj_size, true, false); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4294 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4295 // Present the results of the copy. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4296 result_reg->init_req(_array_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4297 result_val->init_req(_array_path, alloc_obj); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4298 result_i_o ->set_req(_array_path, i_o()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4299 result_mem ->set_req(_array_path, reset_memory()); |
0 | 4300 } |
4301 } | |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4302 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4303 // 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
|
4304 // 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
|
4305 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
|
4306 record_for_igvn(slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4307 if (!stopped()) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4308 // 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
|
4309 // 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
|
4310 // 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
|
4311 // 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
|
4312 // 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
|
4313 // 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
|
4314 // Object clone(). |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4315 if (is_virtual) { |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4316 generate_virtual_guard(obj_klass, slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4317 } |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4318 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4319 // 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
|
4320 // 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
|
4321 // 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
|
4322 generate_access_flags_guard(obj_klass, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4323 // Test both conditions: |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4324 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
|
4325 // Must be cloneable but not finalizer: |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4326 JVM_ACC_IS_CLONEABLE, |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4327 slow_region); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4328 } |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4329 |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4330 if (!stopped()) { |
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4331 // 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
|
4332 PreserveJVMState pjvms(this); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4333 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
|
4334 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
|
4335 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4336 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
|
4337 |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4338 // Present the results of the slow call. |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4339 result_reg->init_req(_instance_path, control()); |
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
896
diff
changeset
|
4340 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
|
4341 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
|
4342 result_mem ->set_req(_instance_path, reset_memory()); |
0 | 4343 } |
4344 | |
900
9987d9d5eb0e
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4345 // Generate code for the slow case. We make a call to clone(). |
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4346 set_control(_gvn.transform(slow_region)); |
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4347 if (!stopped()) { |
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4348 PreserveJVMState pjvms(this); |
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4349 CallJavaNode* slow_call = generate_method_call(vmIntrinsics::_clone, is_virtual); |
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4350 Node* slow_result = set_results_for_java_call(slow_call); |
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4351 // this->control() comes from set_results_for_java_call |
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4352 result_reg->init_req(_slow_path, control()); |
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4353 result_val->init_req(_slow_path, slow_result); |
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4354 result_i_o ->set_req(_slow_path, i_o()); |
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4355 result_mem ->set_req(_slow_path, reset_memory()); |
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|
4356 } |
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|
4357 |
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|
4358 // Return the combined state. |
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4359 set_control( _gvn.transform(result_reg) ); |
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6868269: CompileTheWorld assertion failure introduced by the reexecute bit implementation
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4360 set_i_o( _gvn.transform(result_i_o) ); |
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4361 set_all_memory( _gvn.transform(result_mem) ); |
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4362 } // original reexecute is set back here |
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4363 |
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4364 set_result(_gvn.transform(result_val)); |
0 | 4365 return true; |
4366 } | |
4367 | |
4368 //------------------------------basictype2arraycopy---------------------------- | |
4369 address LibraryCallKit::basictype2arraycopy(BasicType t, | |
4370 Node* src_offset, | |
4371 Node* dest_offset, | |
4372 bool disjoint_bases, | |
2324 | 4373 const char* &name, |
4374 bool dest_uninitialized) { | |
0 | 4375 const TypeInt* src_offset_inttype = gvn().find_int_type(src_offset);; |
4376 const TypeInt* dest_offset_inttype = gvn().find_int_type(dest_offset);; | |
4377 | |
4378 bool aligned = false; | |
4379 bool disjoint = disjoint_bases; | |
4380 | |
4381 // if the offsets are the same, we can treat the memory regions as | |
4382 // disjoint, because either the memory regions are in different arrays, | |
4383 // or they are identical (which we can treat as disjoint.) We can also | |
4384 // treat a copy with a destination index less that the source index | |
4385 // as disjoint since a low->high copy will work correctly in this case. | |
4386 if (src_offset_inttype != NULL && src_offset_inttype->is_con() && | |
4387 dest_offset_inttype != NULL && dest_offset_inttype->is_con()) { | |
4388 // both indices are constants | |
4389 int s_offs = src_offset_inttype->get_con(); | |
4390 int d_offs = dest_offset_inttype->get_con(); | |
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4391 int element_size = type2aelembytes(t); |
0 | 4392 aligned = ((arrayOopDesc::base_offset_in_bytes(t) + s_offs * element_size) % HeapWordSize == 0) && |
4393 ((arrayOopDesc::base_offset_in_bytes(t) + d_offs * element_size) % HeapWordSize == 0); | |
4394 if (s_offs >= d_offs) disjoint = true; | |
4395 } else if (src_offset == dest_offset && src_offset != NULL) { | |
4396 // This can occur if the offsets are identical non-constants. | |
4397 disjoint = true; | |
4398 } | |
4399 | |
2446 | 4400 return StubRoutines::select_arraycopy_function(t, aligned, disjoint, name, dest_uninitialized); |
0 | 4401 } |
4402 | |
4403 | |
4404 //------------------------------inline_arraycopy----------------------- | |
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4405 // public static native void java.lang.System.arraycopy(Object src, int srcPos, |
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4406 // Object dest, int destPos, |
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4407 // int length); |
0 | 4408 bool LibraryCallKit::inline_arraycopy() { |
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4409 // Get the arguments. |
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4410 Node* src = argument(0); // type: oop |
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4411 Node* src_offset = argument(1); // type: int |
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4412 Node* dest = argument(2); // type: oop |
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4413 Node* dest_offset = argument(3); // type: int |
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4414 Node* length = argument(4); // type: int |
0 | 4415 |
4416 // Compile time checks. If any of these checks cannot be verified at compile time, | |
4417 // we do not make a fast path for this call. Instead, we let the call remain as it | |
4418 // is. The checks we choose to mandate at compile time are: | |
4419 // | |
4420 // (1) src and dest are arrays. | |
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4421 const Type* src_type = src->Value(&_gvn); |
0 | 4422 const Type* dest_type = dest->Value(&_gvn); |
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4423 const TypeAryPtr* top_src = src_type->isa_aryptr(); |
0 | 4424 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); |
4425 if (top_src == NULL || top_src->klass() == NULL || | |
4426 top_dest == NULL || top_dest->klass() == NULL) { | |
4427 // Conservatively insert a memory barrier on all memory slices. | |
4428 // Do not let writes into the source float below the arraycopy. | |
4429 insert_mem_bar(Op_MemBarCPUOrder); | |
4430 | |
4431 // Call StubRoutines::generic_arraycopy stub. | |
4432 generate_arraycopy(TypeRawPtr::BOTTOM, T_CONFLICT, | |
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4433 src, src_offset, dest, dest_offset, length); |
0 | 4434 |
4435 // Do not let reads from the destination float above the arraycopy. | |
4436 // Since we cannot type the arrays, we don't know which slices | |
4437 // might be affected. We could restrict this barrier only to those | |
4438 // memory slices which pertain to array elements--but don't bother. | |
4439 if (!InsertMemBarAfterArraycopy) | |
4440 // (If InsertMemBarAfterArraycopy, there is already one in place.) | |
4441 insert_mem_bar(Op_MemBarCPUOrder); | |
4442 return true; | |
4443 } | |
4444 | |
4445 // (2) src and dest arrays must have elements of the same BasicType | |
4446 // Figure out the size and type of the elements we will be copying. | |
4447 BasicType src_elem = top_src->klass()->as_array_klass()->element_type()->basic_type(); | |
4448 BasicType dest_elem = top_dest->klass()->as_array_klass()->element_type()->basic_type(); | |
4449 if (src_elem == T_ARRAY) src_elem = T_OBJECT; | |
4450 if (dest_elem == T_ARRAY) dest_elem = T_OBJECT; | |
4451 | |
4452 if (src_elem != dest_elem || dest_elem == T_VOID) { | |
4453 // The component types are not the same or are not recognized. Punt. | |
4454 // (But, avoid the native method wrapper to JVM_ArrayCopy.) | |
4455 generate_slow_arraycopy(TypePtr::BOTTOM, | |
2324 | 4456 src, src_offset, dest, dest_offset, length, |
4457 /*dest_uninitialized*/false); | |
0 | 4458 return true; |
4459 } | |
4460 | |
4461 //--------------------------------------------------------------------------- | |
4462 // We will make a fast path for this call to arraycopy. | |
4463 | |
4464 // We have the following tests left to perform: | |
4465 // | |
4466 // (3) src and dest must not be null. | |
4467 // (4) src_offset must not be negative. | |
4468 // (5) dest_offset must not be negative. | |
4469 // (6) length must not be negative. | |
4470 // (7) src_offset + length must not exceed length of src. | |
4471 // (8) dest_offset + length must not exceed length of dest. | |
4472 // (9) each element of an oop array must be assignable | |
4473 | |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
4474 RegionNode* slow_region = new (C) RegionNode(1); |
0 | 4475 record_for_igvn(slow_region); |
4476 | |
4477 // (3) operands must not be null | |
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4478 // We currently perform our null checks with the null_check routine. |
0 | 4479 // This means that the null exceptions will be reported in the caller |
4480 // rather than (correctly) reported inside of the native arraycopy call. | |
4481 // This should be corrected, given time. We do our null check with the | |
4482 // stack pointer restored. | |
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4483 src = null_check(src, T_ARRAY); |
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|
4484 dest = null_check(dest, T_ARRAY); |
0 | 4485 |
4486 // (4) src_offset must not be negative. | |
4487 generate_negative_guard(src_offset, slow_region); | |
4488 | |
4489 // (5) dest_offset must not be negative. | |
4490 generate_negative_guard(dest_offset, slow_region); | |
4491 | |
4492 // (6) length must not be negative (moved to generate_arraycopy()). | |
4493 // generate_negative_guard(length, slow_region); | |
4494 | |
4495 // (7) src_offset + length must not exceed length of src. | |
4496 generate_limit_guard(src_offset, length, | |
4497 load_array_length(src), | |
4498 slow_region); | |
4499 | |
4500 // (8) dest_offset + length must not exceed length of dest. | |
4501 generate_limit_guard(dest_offset, length, | |
4502 load_array_length(dest), | |
4503 slow_region); | |
4504 | |
4505 // (9) each element of an oop array must be assignable | |
4506 // The generate_arraycopy subroutine checks this. | |
4507 | |
4508 // This is where the memory effects are placed: | |
4509 const TypePtr* adr_type = TypeAryPtr::get_array_body_type(dest_elem); | |
4510 generate_arraycopy(adr_type, dest_elem, | |
4511 src, src_offset, dest, dest_offset, length, | |
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|
4512 false, false, slow_region); |
0 | 4513 |
4514 return true; | |
4515 } | |
4516 | |
4517 //-----------------------------generate_arraycopy---------------------- | |
4518 // Generate an optimized call to arraycopy. | |
4519 // Caller must guard against non-arrays. | |
4520 // Caller must determine a common array basic-type for both arrays. | |
4521 // Caller must validate offsets against array bounds. | |
4522 // The slow_region has already collected guard failure paths | |
4523 // (such as out of bounds length or non-conformable array types). | |
4524 // The generated code has this shape, in general: | |
4525 // | |
4526 // if (length == 0) return // via zero_path | |
4527 // slowval = -1 | |
4528 // if (types unknown) { | |
4529 // slowval = call generic copy loop | |
4530 // if (slowval == 0) return // via checked_path | |
4531 // } else if (indexes in bounds) { | |
4532 // if ((is object array) && !(array type check)) { | |
4533 // slowval = call checked copy loop | |
4534 // if (slowval == 0) return // via checked_path | |
4535 // } else { | |
4536 // call bulk copy loop | |
4537 // return // via fast_path | |
4538 // } | |
4539 // } | |
4540 // // adjust params for remaining work: | |
4541 // if (slowval != -1) { | |
4542 // n = -1^slowval; src_offset += n; dest_offset += n; length -= n | |
4543 // } | |
4544 // slow_region: | |
4545 // call slow arraycopy(src, src_offset, dest, dest_offset, length) | |
4546 // return // via slow_call_path | |
4547 // | |
4548 // This routine is used from several intrinsics: System.arraycopy, | |
4549 // Object.clone (the array subcase), and Arrays.copyOf[Range]. | |
4550 // | |
4551 void | |
4552 LibraryCallKit::generate_arraycopy(const TypePtr* adr_type, | |
4553 BasicType basic_elem_type, | |
4554 Node* src, Node* src_offset, | |
4555 Node* dest, Node* dest_offset, | |
4556 Node* copy_length, | |
4557 bool disjoint_bases, | |
4558 bool length_never_negative, | |
4559 RegionNode* slow_region) { | |
4560 | |
4561 if (slow_region == NULL) { | |
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7193318: C2: remove number of inputs requirement from Node's new operator
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|
4562 slow_region = new(C) RegionNode(1); |
0 | 4563 record_for_igvn(slow_region); |
4564 } | |
4565 | |
4566 Node* original_dest = dest; | |
4567 AllocateArrayNode* alloc = NULL; // used for zeroing, if needed | |
2324 | 4568 bool dest_uninitialized = false; |
0 | 4569 |
4570 // See if this is the initialization of a newly-allocated array. | |
4571 // If so, we will take responsibility here for initializing it to zero. | |
4572 // (Note: Because tightly_coupled_allocation performs checks on the | |
4573 // out-edges of the dest, we need to avoid making derived pointers | |
4574 // from it until we have checked its uses.) | |
4575 if (ReduceBulkZeroing | |
4576 && !ZeroTLAB // pointless if already zeroed | |
4577 && basic_elem_type != T_CONFLICT // avoid corner case | |
4778 | 4578 && !src->eqv_uncast(dest) |
0 | 4579 && ((alloc = tightly_coupled_allocation(dest, slow_region)) |
4580 != NULL) | |
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29
diff
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|
4581 && _gvn.find_int_con(alloc->in(AllocateNode::ALength), 1) > 0 |
0 | 4582 && alloc->maybe_set_complete(&_gvn)) { |
4583 // "You break it, you buy it." | |
4584 InitializeNode* init = alloc->initialization(); | |
4585 assert(init->is_complete(), "we just did this"); | |
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a92cdbac8b9e
7081933: Use zeroing elimination optimization for large array
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3742
diff
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|
4586 init->set_complete_with_arraycopy(); |
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|
4587 assert(dest->is_CheckCastPP(), "sanity"); |
0 | 4588 assert(dest->in(0)->in(0) == init, "dest pinned"); |
4589 adr_type = TypeRawPtr::BOTTOM; // all initializations are into raw memory | |
4590 // From this point on, every exit path is responsible for | |
4591 // initializing any non-copied parts of the object to zero. | |
2324 | 4592 // Also, if this flag is set we make sure that arraycopy interacts properly |
4593 // with G1, eliding pre-barriers. See CR 6627983. | |
4594 dest_uninitialized = true; | |
0 | 4595 } else { |
4596 // No zeroing elimination here. | |
4597 alloc = NULL; | |
4598 //original_dest = dest; | |
2324 | 4599 //dest_uninitialized = false; |
0 | 4600 } |
4601 | |
4602 // Results are placed here: | |
4603 enum { fast_path = 1, // normal void-returning assembly stub | |
4604 checked_path = 2, // special assembly stub with cleanup | |
4605 slow_call_path = 3, // something went wrong; call the VM | |
4606 zero_path = 4, // bypass when length of copy is zero | |
4607 bcopy_path = 5, // copy primitive array by 64-bit blocks | |
4608 PATH_LIMIT = 6 | |
4609 }; | |
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4610 RegionNode* result_region = new(C) RegionNode(PATH_LIMIT); |
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4611 PhiNode* result_i_o = new(C) PhiNode(result_region, Type::ABIO); |
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4612 PhiNode* result_memory = new(C) PhiNode(result_region, Type::MEMORY, adr_type); |
0 | 4613 record_for_igvn(result_region); |
4614 _gvn.set_type_bottom(result_i_o); | |
4615 _gvn.set_type_bottom(result_memory); | |
4616 assert(adr_type != TypePtr::BOTTOM, "must be RawMem or a T[] slice"); | |
4617 | |
4618 // The slow_control path: | |
4619 Node* slow_control; | |
4620 Node* slow_i_o = i_o(); | |
4621 Node* slow_mem = memory(adr_type); | |
4622 debug_only(slow_control = (Node*) badAddress); | |
4623 | |
4624 // Checked control path: | |
4625 Node* checked_control = top(); | |
4626 Node* checked_mem = NULL; | |
4627 Node* checked_i_o = NULL; | |
4628 Node* checked_value = NULL; | |
4629 | |
4630 if (basic_elem_type == T_CONFLICT) { | |
2324 | 4631 assert(!dest_uninitialized, ""); |
0 | 4632 Node* cv = generate_generic_arraycopy(adr_type, |
4633 src, src_offset, dest, dest_offset, | |
2324 | 4634 copy_length, dest_uninitialized); |
0 | 4635 if (cv == NULL) cv = intcon(-1); // failure (no stub available) |
4636 checked_control = control(); | |
4637 checked_i_o = i_o(); | |
4638 checked_mem = memory(adr_type); | |
4639 checked_value = cv; | |
4640 set_control(top()); // no fast path | |
4641 } | |
4642 | |
4643 Node* not_pos = generate_nonpositive_guard(copy_length, length_never_negative); | |
4644 if (not_pos != NULL) { | |
4645 PreserveJVMState pjvms(this); | |
4646 set_control(not_pos); | |
4647 | |
4648 // (6) length must not be negative. | |
4649 if (!length_never_negative) { | |
4650 generate_negative_guard(copy_length, slow_region); | |
4651 } | |
4652 | |
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|
4653 // copy_length is 0. |
2324 | 4654 if (!stopped() && dest_uninitialized) { |
0 | 4655 Node* dest_length = alloc->in(AllocateNode::ALength); |
4778 | 4656 if (copy_length->eqv_uncast(dest_length) |
0 | 4657 || _gvn.find_int_con(dest_length, 1) <= 0) { |
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|
4658 // There is no zeroing to do. No need for a secondary raw memory barrier. |
0 | 4659 } else { |
4660 // Clear the whole thing since there are no source elements to copy. | |
4661 generate_clear_array(adr_type, dest, basic_elem_type, | |
4662 intcon(0), NULL, | |
4663 alloc->in(AllocateNode::AllocSize)); | |
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4664 // Use a secondary InitializeNode as raw memory barrier. |
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|
4665 // Currently it is needed only on this path since other |
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|
4666 // paths have stub or runtime calls as raw memory barriers. |
4325cdaa78ad
6857661: 64-bit server VM: assert(is_Initialize(),"invalid node class")
kvn
parents:
833
diff
changeset
|
4667 InitializeNode* init = insert_mem_bar_volatile(Op_Initialize, |
4325cdaa78ad
6857661: 64-bit server VM: assert(is_Initialize(),"invalid node class")
kvn
parents:
833
diff
changeset
|
4668 Compile::AliasIdxRaw, |
4325cdaa78ad
6857661: 64-bit server VM: assert(is_Initialize(),"invalid node class")
kvn
parents:
833
diff
changeset
|
4669 top())->as_Initialize(); |
4325cdaa78ad
6857661: 64-bit server VM: assert(is_Initialize(),"invalid node class")
kvn
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833
diff
changeset
|
4670 init->set_complete(&_gvn); // (there is no corresponding AllocateNode) |
0 | 4671 } |
4672 } | |
4673 | |
4674 // Present the results of the fast call. | |
4675 result_region->init_req(zero_path, control()); | |
4676 result_i_o ->init_req(zero_path, i_o()); | |
4677 result_memory->init_req(zero_path, memory(adr_type)); | |
4678 } | |
4679 | |
2324 | 4680 if (!stopped() && dest_uninitialized) { |
0 | 4681 // We have to initialize the *uncopied* part of the array to zero. |
4682 // The copy destination is the slice dest[off..off+len]. The other slices | |
4683 // are dest_head = dest[0..off] and dest_tail = dest[off+len..dest.length]. | |
4684 Node* dest_size = alloc->in(AllocateNode::AllocSize); | |
4685 Node* dest_length = alloc->in(AllocateNode::ALength); | |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4686 Node* dest_tail = _gvn.transform( new(C) AddINode(dest_offset, |
0 | 4687 copy_length) ); |
4688 | |
4689 // If there is a head section that needs zeroing, do it now. | |
4690 if (find_int_con(dest_offset, -1) != 0) { | |
4691 generate_clear_array(adr_type, dest, basic_elem_type, | |
4692 intcon(0), dest_offset, | |
4693 NULL); | |
4694 } | |
4695 | |
4696 // Next, perform a dynamic check on the tail length. | |
4697 // It is often zero, and we can win big if we prove this. | |
4698 // There are two wins: Avoid generating the ClearArray | |
4699 // with its attendant messy index arithmetic, and upgrade | |
4700 // the copy to a more hardware-friendly word size of 64 bits. | |
4701 Node* tail_ctl = NULL; | |
4778 | 4702 if (!stopped() && !dest_tail->eqv_uncast(dest_length)) { |
6804
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7193318: C2: remove number of inputs requirement from Node's new operator
kvn
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6795
diff
changeset
|
4703 Node* cmp_lt = _gvn.transform( new(C) CmpINode(dest_tail, dest_length) ); |
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kvn
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diff
changeset
|
4704 Node* bol_lt = _gvn.transform( new(C) BoolNode(cmp_lt, BoolTest::lt) ); |
0 | 4705 tail_ctl = generate_slow_guard(bol_lt, NULL); |
4706 assert(tail_ctl != NULL || !stopped(), "must be an outcome"); | |
4707 } | |
4708 | |
4709 // At this point, let's assume there is no tail. | |
4710 if (!stopped() && alloc != NULL && basic_elem_type != T_OBJECT) { | |
4711 // There is no tail. Try an upgrade to a 64-bit copy. | |
4712 bool didit = false; | |
4713 { PreserveJVMState pjvms(this); | |
4714 didit = generate_block_arraycopy(adr_type, basic_elem_type, alloc, | |
4715 src, src_offset, dest, dest_offset, | |
2324 | 4716 dest_size, dest_uninitialized); |
0 | 4717 if (didit) { |
4718 // Present the results of the block-copying fast call. | |
4719 result_region->init_req(bcopy_path, control()); | |
4720 result_i_o ->init_req(bcopy_path, i_o()); | |
4721 result_memory->init_req(bcopy_path, memory(adr_type)); | |
4722 } | |
4723 } | |
4724 if (didit) | |
4725 set_control(top()); // no regular fast path | |
4726 } | |
4727 | |
4728 // Clear the tail, if any. | |
4729 if (tail_ctl != NULL) { | |
4730 Node* notail_ctl = stopped() ? NULL : control(); | |
4731 set_control(tail_ctl); | |
4732 if (notail_ctl == NULL) { | |
4733 generate_clear_array(adr_type, dest, basic_elem_type, | |
4734 dest_tail, NULL, | |
4735 dest_size); | |
4736 } else { | |
4737 // Make a local merge. | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4738 Node* done_ctl = new(C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4739 Node* done_mem = new(C) PhiNode(done_ctl, Type::MEMORY, adr_type); |
0 | 4740 done_ctl->init_req(1, notail_ctl); |
4741 done_mem->init_req(1, memory(adr_type)); | |
4742 generate_clear_array(adr_type, dest, basic_elem_type, | |
4743 dest_tail, NULL, | |
4744 dest_size); | |
4745 done_ctl->init_req(2, control()); | |
4746 done_mem->init_req(2, memory(adr_type)); | |
4747 set_control( _gvn.transform(done_ctl) ); | |
4748 set_memory( _gvn.transform(done_mem), adr_type ); | |
4749 } | |
4750 } | |
4751 } | |
4752 | |
4753 BasicType copy_type = basic_elem_type; | |
4754 assert(basic_elem_type != T_ARRAY, "caller must fix this"); | |
4755 if (!stopped() && copy_type == T_OBJECT) { | |
4756 // If src and dest have compatible element types, we can copy bits. | |
4757 // Types S[] and D[] are compatible if D is a supertype of S. | |
4758 // | |
4759 // If they are not, we will use checked_oop_disjoint_arraycopy, | |
4760 // which performs a fast optimistic per-oop check, and backs off | |
4761 // further to JVM_ArrayCopy on the first per-oop check that fails. | |
4762 // (Actually, we don't move raw bits only; the GC requires card marks.) | |
4763 | |
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6615
diff
changeset
|
4764 // Get the Klass* for both src and dest |
0 | 4765 Node* src_klass = load_object_klass(src); |
4766 Node* dest_klass = load_object_klass(dest); | |
4767 | |
4768 // Generate the subtype check. | |
4769 // This might fold up statically, or then again it might not. | |
4770 // | |
4771 // Non-static example: Copying List<String>.elements to a new String[]. | |
4772 // The backing store for a List<String> is always an Object[], | |
4773 // but its elements are always type String, if the generic types | |
4774 // are correct at the source level. | |
4775 // | |
4776 // Test S[] against D[], not S against D, because (probably) | |
4777 // the secondary supertype cache is less busy for S[] than S. | |
4778 // This usually only matters when D is an interface. | |
4779 Node* not_subtype_ctrl = gen_subtype_check(src_klass, dest_klass); | |
4780 // Plug failing path into checked_oop_disjoint_arraycopy | |
4781 if (not_subtype_ctrl != top()) { | |
4782 PreserveJVMState pjvms(this); | |
4783 set_control(not_subtype_ctrl); | |
4784 // (At this point we can assume disjoint_bases, since types differ.) | |
6831
d8ce2825b193
8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents:
6804
diff
changeset
|
4785 int ek_offset = in_bytes(ObjArrayKlass::element_klass_offset()); |
0 | 4786 Node* p1 = basic_plus_adr(dest_klass, ek_offset); |
164
c436414a719e
6703890: Compressed Oops: add LoadNKlass node to generate narrow oops (32-bits) compare instructions
kvn
parents:
163
diff
changeset
|
4787 Node* n1 = LoadKlassNode::make(_gvn, immutable_memory(), p1, TypeRawPtr::BOTTOM); |
0 | 4788 Node* dest_elem_klass = _gvn.transform(n1); |
4789 Node* cv = generate_checkcast_arraycopy(adr_type, | |
4790 dest_elem_klass, | |
4791 src, src_offset, dest, dest_offset, | |
2324 | 4792 ConvI2X(copy_length), dest_uninitialized); |
0 | 4793 if (cv == NULL) cv = intcon(-1); // failure (no stub available) |
4794 checked_control = control(); | |
4795 checked_i_o = i_o(); | |
4796 checked_mem = memory(adr_type); | |
4797 checked_value = cv; | |
4798 } | |
4799 // At this point we know we do not need type checks on oop stores. | |
4800 | |
4801 // Let's see if we need card marks: | |
4802 if (alloc != NULL && use_ReduceInitialCardMarks()) { | |
4803 // If we do not need card marks, copy using the jint or jlong stub. | |
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
34
diff
changeset
|
4804 copy_type = LP64_ONLY(UseCompressedOops ? T_INT : T_LONG) NOT_LP64(T_INT); |
29
d5fc211aea19
6633953: type2aelembytes{T_ADDRESS} should be 8 bytes in 64 bit VM
kvn
parents:
0
diff
changeset
|
4805 assert(type2aelembytes(basic_elem_type) == type2aelembytes(copy_type), |
0 | 4806 "sizes agree"); |
4807 } | |
4808 } | |
4809 | |
4810 if (!stopped()) { | |
4811 // Generate the fast path, if possible. | |
4812 PreserveJVMState pjvms(this); | |
4813 generate_unchecked_arraycopy(adr_type, copy_type, disjoint_bases, | |
4814 src, src_offset, dest, dest_offset, | |
2324 | 4815 ConvI2X(copy_length), dest_uninitialized); |
0 | 4816 |
4817 // Present the results of the fast call. | |
4818 result_region->init_req(fast_path, control()); | |
4819 result_i_o ->init_req(fast_path, i_o()); | |
4820 result_memory->init_req(fast_path, memory(adr_type)); | |
4821 } | |
4822 | |
4823 // Here are all the slow paths up to this point, in one bundle: | |
4824 slow_control = top(); | |
4825 if (slow_region != NULL) | |
4826 slow_control = _gvn.transform(slow_region); | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
4827 DEBUG_ONLY(slow_region = (RegionNode*)badAddress); |
0 | 4828 |
4829 set_control(checked_control); | |
4830 if (!stopped()) { | |
4831 // Clean up after the checked call. | |
4832 // The returned value is either 0 or -1^K, | |
4833 // where K = number of partially transferred array elements. | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4834 Node* cmp = _gvn.transform( new(C) CmpINode(checked_value, intcon(0)) ); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4835 Node* bol = _gvn.transform( new(C) BoolNode(cmp, BoolTest::eq) ); |
0 | 4836 IfNode* iff = create_and_map_if(control(), bol, PROB_MAX, COUNT_UNKNOWN); |
4837 | |
4838 // If it is 0, we are done, so transfer to the end. | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4839 Node* checks_done = _gvn.transform( new(C) IfTrueNode(iff) ); |
0 | 4840 result_region->init_req(checked_path, checks_done); |
4841 result_i_o ->init_req(checked_path, checked_i_o); | |
4842 result_memory->init_req(checked_path, checked_mem); | |
4843 | |
4844 // If it is not zero, merge into the slow call. | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4845 set_control( _gvn.transform( new(C) IfFalseNode(iff) )); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4846 RegionNode* slow_reg2 = new(C) RegionNode(3); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4847 PhiNode* slow_i_o2 = new(C) PhiNode(slow_reg2, Type::ABIO); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4848 PhiNode* slow_mem2 = new(C) PhiNode(slow_reg2, Type::MEMORY, adr_type); |
0 | 4849 record_for_igvn(slow_reg2); |
4850 slow_reg2 ->init_req(1, slow_control); | |
4851 slow_i_o2 ->init_req(1, slow_i_o); | |
4852 slow_mem2 ->init_req(1, slow_mem); | |
4853 slow_reg2 ->init_req(2, control()); | |
833
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4854 slow_i_o2 ->init_req(2, checked_i_o); |
acba6af809c8
6840775: Multiple JVM crashes seen with 1.6.0_10 through 1.6.0_14
kvn
parents:
827
diff
changeset
|
4855 slow_mem2 ->init_req(2, checked_mem); |
0 | 4856 |
4857 slow_control = _gvn.transform(slow_reg2); | |
4858 slow_i_o = _gvn.transform(slow_i_o2); | |
4859 slow_mem = _gvn.transform(slow_mem2); | |
4860 | |
4861 if (alloc != NULL) { | |
4862 // We'll restart from the very beginning, after zeroing the whole thing. | |
4863 // This can cause double writes, but that's OK since dest is brand new. | |
4864 // So we ignore the low 31 bits of the value returned from the stub. | |
4865 } else { | |
4866 // We must continue the copy exactly where it failed, or else | |
4867 // another thread might see the wrong number of writes to dest. | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4868 Node* checked_offset = _gvn.transform( new(C) XorINode(checked_value, intcon(-1)) ); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4869 Node* slow_offset = new(C) PhiNode(slow_reg2, TypeInt::INT); |
0 | 4870 slow_offset->init_req(1, intcon(0)); |
4871 slow_offset->init_req(2, checked_offset); | |
4872 slow_offset = _gvn.transform(slow_offset); | |
4873 | |
4874 // Adjust the arguments by the conditionally incoming offset. | |
6804
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4875 Node* src_off_plus = _gvn.transform( new(C) AddINode(src_offset, slow_offset) ); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4876 Node* dest_off_plus = _gvn.transform( new(C) AddINode(dest_offset, slow_offset) ); |
e626685e9f6c
7193318: C2: remove number of inputs requirement from Node's new operator
kvn
parents:
6795
diff
changeset
|
4877 Node* length_minus = _gvn.transform( new(C) SubINode(copy_length, slow_offset) ); |
0 | 4878 |
4879 // Tweak the node variables to adjust the code produced below: | |
4880 src_offset = src_off_plus; | |
4881 dest_offset = dest_off_plus; | |
4882 copy_length = length_minus; | |
4883 } | |
4884 } | |
4885 | |
4886 set_control(slow_control); | |
4887 if (!stopped()) { | |
4888 // Generate the slow path, if needed. | |
4889 PreserveJVMState pjvms(this); // replace_in_map may trash the map | |
4890 | |
4891 set_memory(slow_mem, adr_type); | |
4892 set_i_o(slow_i_o); | |
4893 | |
2324 | 4894 if (dest_uninitialized) { |
0 | 4895 generate_clear_array(adr_type, dest, basic_elem_type, |
4896 intcon(0), NULL, | |
4897 alloc->in(AllocateNode::AllocSize)); | |
4898 } | |
4899 | |
4900 generate_slow_arraycopy(adr_type, | |
4901 src, src_offset, dest, dest_offset, | |
2324 | 4902 copy_length, /*dest_uninitialized*/false); |
0 | 4903 |
4904 result_region->init_req(slow_call_path, control()); | |
4905 result_i_o ->init_req(slow_call_path, i_o()); | |
4906 result_memory->init_req(slow_call_path, memory(adr_type)); | |
4907 } | |
4908 | |
4909 // Remove unused edges. | |
4910 for (uint i = 1; i < result_region->req(); i++) { | |
4911 if (result_region->in(i) == NULL) | |
4912 result_region->init_req(i, top()); | |
4913 } | |
4914 | |
4915 // Finished; return the combined state. | |
4916 set_control( _gvn.transform(result_region) ); | |
4917 set_i_o( _gvn.transform(result_i_o) ); | |
4918 set_memory( _gvn.transform(result_memory), adr_type ); | |
4919 | |
4920 // The memory edges above are precise in order to model effects around | |
605 | 4921 // array copies accurately to allow value numbering of field loads around |
0 | 4922 // arraycopy. Such field loads, both before and after, are common in Java |
4923 // collections and similar classes involving header/array data structures. | |
4924 // | |
4925 // But with low number of register or when some registers are used or killed | |
4926 // by arraycopy calls it causes registers spilling on stack. See 6544710. | |
4927 // The next memory barrier is added to avoid it. If the arraycopy can be | |
4928 // optimized away (which it can, sometimes) then we can manually remove | |
4929 // the membar also. | |
958
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4930 // |
c7e94e8fff43
6880053: assert(alloc_obj->as_CheckCastPP()->type() != TypeInstPtr::NOTNULL)
kvn
parents:
950
diff
changeset
|
4931 // 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
|
4932 if (alloc != NULL) { |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4933 // 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
|
4934 // 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
|
4935 // other threads. |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4936 // 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
|
4937 // 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
|
4938 // AllocateNode and eliminate the MemBarStoreStoreNode if possible |
1dc233a8c7fe
7121140: Allocation paths require explicit memory synchronization operations for RMO systems
roland
parents:
4762
diff
changeset
|
4939 // 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
|
4940 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
|
4941 } else if (InsertMemBarAfterArraycopy) |
0 | 4942 insert_mem_bar(Op_MemBarCPUOrder); |
4943 } | |
4944 | |
4945 | |
4946 // Helper function which determines if an arraycopy immediately follows | |
4947 // an allocation, with no intervening tests or other escapes for the object. | |
4948 AllocateArrayNode* | |
4949 LibraryCallKit::tightly_coupled_allocation(Node* ptr, | |
4950 RegionNode* slow_region) { | |
4951 if (stopped()) return NULL; // no fast path | |
4952 if (C->AliasLevel() == 0) return NULL; // no MergeMems around | |
4953 | |
4954 AllocateArrayNode* alloc = AllocateArrayNode::Ideal_array_allocation(ptr, &_gvn); | |
4955 if (alloc == NULL) return NULL; | |
4956 | |
4957 Node* rawmem = memory(Compile::AliasIdxRaw); | |
4958 // Is the allocation's memory state untouched? | |
4959 if (!(rawmem->is_Proj() && rawmem->in(0)->is_Initialize())) { | |
4960 // Bail out if there have been raw-memory effects since the allocation. | |
4961 // (Example: There might have been a call or safepoint.) | |
4962 return NULL; | |
4963 } | |
4964 rawmem = rawmem->in(0)->as_Initialize()->memory(Compile::AliasIdxRaw); | |
4965 if (!(rawmem->is_Proj() && rawmem->in(0) == alloc)) { | |
4966 return NULL; | |
4967 } | |
4968 | |
4969 // There must be no unexpected observers of this allocation. | |
4970 for (DUIterator_Fast imax, i = ptr->fast_outs(imax); i < imax; i++) { | |
4971 Node* obs = ptr->fast_out(i); | |
4972 if (obs != this->map()) { | |
4973 return NULL; | |
4974 } | |
4975 } | |
4976 | |
4977 // This arraycopy must unconditionally follow the allocation of the ptr. | |
4978 Node* alloc_ctl = ptr->in(0); | |
4979 assert(just_allocated_object(alloc_ctl) == ptr, "most recent allo"); | |
4980 | |
4981 Node* ctl = control(); | |
4982 while (ctl != alloc_ctl) { | |
4983 // There may be guards which feed into the slow_region. | |
4984 // Any other control flow means that we might not get a chance | |
4985 // to finish initializing the allocated object. | |
4986 if ((ctl->is_IfFalse() || ctl->is_IfTrue()) && ctl->in(0)->is_If()) { | |
4987 IfNode* iff = ctl->in(0)->as_If(); | |
4988 Node* not_ctl = iff->proj_out(1 - ctl->as_Proj()->_con); | |
4989 assert(not_ctl != NULL && not_ctl != ctl, "found alternate"); | |
4990 if (slow_region != NULL && slow_region->find_edge(not_ctl) >= 1) { | |
4991 ctl = iff->in(0); // This test feeds the known slow_region. | |
4992 continue; | |
4993 } | |
4994 // One more try: Various low-level checks bottom out in | |
4995 // uncommon traps. If the debug-info of the trap omits | |
4996 // any reference to the allocation, as we've already | |
4997 // observed, then there can be no objection to the trap. | |
4998 bool found_trap = false; | |
4999 for (DUIterator_Fast jmax, j = not_ctl->fast_outs(jmax); j < jmax; j++) { | |
5000 Node* obs = not_ctl->fast_out(j); | |
5001 if (obs->in(0) == not_ctl && obs->is_Call() && | |
1748 | 5002 (obs->as_Call()->entry_point() == SharedRuntime::uncommon_trap_blob()->entry_point())) { |
0 | 5003 found_trap = true; break; |
5004 } | |
5005 } | |
5006 if (found_trap) { | |
5007 ctl = iff->in(0); // This test feeds a harmless uncommon trap. | |
5008 continue; | |
5009 } | |
5010 } | |
5011 return NULL; | |
5012 } | |
5013 | |
5014 // If we get this far, we have an allocation which immediately | |
5015 // precedes the arraycopy, and we can take over zeroing the new object. | |
5016 // The arraycopy will finish the initialization, and provide | |
5017 // a new control state to which we will anchor the destination pointer. | |
5018 | |
5019 return alloc; | |
5020 } | |
5021 | |
5022 // Helper for initialization of arrays, creating a ClearArray. | |
5023 // It writes zero bits in [start..end), within the body of an array object. | |
5024 // The memory effects are all chained onto the 'adr_type' alias category. | |
5025 // | |
5026 // Since the object is otherwise uninitialized, we are free | |
5027 // to put a little "slop" around the edges of the cleared area, | |
5028 // as long as it does not go back into the array's header, | |
5029 // or beyond the array end within the heap. | |
5030 // | |
5031 // The lower edge can be rounded down to the nearest jint and the | |
5032 // upper edge can be rounded up to the nearest MinObjAlignmentInBytes. | |
5033 // | |
5034 // Arguments: | |
5035 // adr_type memory slice where writes are generated | |
5036 // dest oop of the destination array | |
5037 // basic_elem_type element type of the destination | |
5038 // slice_idx array index of first element to store | |
5039 // slice_len number of elements to store (or NULL) | |
5040 // dest_size total size in bytes of the array object | |
5041 // | |
5042 // Exactly one of slice_len or dest_size must be non-NULL. | |
5043 // If dest_size is non-NULL, zeroing extends to the end of the object. | |
5044 // If slice_len is non-NULL, the slice_idx value must be a constant. | |
5045 void | |
5046 LibraryCallKit::generate_clear_array(const TypePtr* adr_type, | |
5047 Node* dest, | |
5048 BasicType basic_elem_type, | |
5049 Node* slice_idx, | |
5050 Node* slice_len, | |
5051 Node* dest_size) { | |
5052 // one or the other but not both of slice_len and dest_size: | |
5053 assert((slice_len != NULL? 1: 0) + (dest_size != NULL? 1: 0) == 1, ""); | |
5054 if (slice_len == NULL) slice_len = top(); | |
5055 if (dest_size == NULL) dest_size = top(); | |
5056 | |
5057 // operate on this memory slice: | |
5058 Node* mem = memory(adr_type); // memory slice to operate on | |
5059 | |
5060 // scaling and rounding of indexes: | |
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5061 int scale = exact_log2(type2aelembytes(basic_elem_type)); |
0 | 5062 int abase = arrayOopDesc::base_offset_in_bytes(basic_elem_type); |
5063 int clear_low = (-1 << scale) & (BytesPerInt - 1); | |
5064 int bump_bit = (-1 << scale) & BytesPerInt; | |
5065 | |
5066 // determine constant starts and ends | |
5067 const intptr_t BIG_NEG = -128; | |
5068 assert(BIG_NEG + 2*abase < 0, "neg enough"); | |
5069 intptr_t slice_idx_con = (intptr_t) find_int_con(slice_idx, BIG_NEG); | |
5070 intptr_t slice_len_con = (intptr_t) find_int_con(slice_len, BIG_NEG); | |
5071 if (slice_len_con == 0) { | |
5072 return; // nothing to do here | |
5073 } | |
5074 intptr_t start_con = (abase + (slice_idx_con << scale)) & ~clear_low; | |
5075 intptr_t end_con = find_intptr_t_con(dest_size, -1); | |
5076 if (slice_idx_con >= 0 && slice_len_con >= 0) { | |
5077 assert(end_con < 0, "not two cons"); | |
5078 end_con = round_to(abase + ((slice_idx_con + slice_len_con) << scale), | |
5079 BytesPerLong); | |
5080 } | |
5081 | |
5082 if (start_con >= 0 && end_con >= 0) { | |
5083 // Constant start and end. Simple. | |
5084 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5085 start_con, end_con, &_gvn); | |
5086 } else if (start_con >= 0 && dest_size != top()) { | |
5087 // Constant start, pre-rounded end after the tail of the array. | |
5088 Node* end = dest_size; | |
5089 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5090 start_con, end, &_gvn); | |
5091 } else if (start_con >= 0 && slice_len != top()) { | |
5092 // Constant start, non-constant end. End needs rounding up. | |
5093 // End offset = round_up(abase + ((slice_idx_con + slice_len) << scale), 8) | |
5094 intptr_t end_base = abase + (slice_idx_con << scale); | |
5095 int end_round = (-1 << scale) & (BytesPerLong - 1); | |
5096 Node* end = ConvI2X(slice_len); | |
5097 if (scale != 0) | |
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5098 end = _gvn.transform( new(C) LShiftXNode(end, intcon(scale) )); |
0 | 5099 end_base += end_round; |
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5100 end = _gvn.transform( new(C) AddXNode(end, MakeConX(end_base)) ); |
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5101 end = _gvn.transform( new(C) AndXNode(end, MakeConX(~end_round)) ); |
0 | 5102 mem = ClearArrayNode::clear_memory(control(), mem, dest, |
5103 start_con, end, &_gvn); | |
5104 } else if (start_con < 0 && dest_size != top()) { | |
5105 // Non-constant start, pre-rounded end after the tail of the array. | |
5106 // This is almost certainly a "round-to-end" operation. | |
5107 Node* start = slice_idx; | |
5108 start = ConvI2X(start); | |
5109 if (scale != 0) | |
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5110 start = _gvn.transform( new(C) LShiftXNode( start, intcon(scale) )); |
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5111 start = _gvn.transform( new(C) AddXNode(start, MakeConX(abase)) ); |
0 | 5112 if ((bump_bit | clear_low) != 0) { |
5113 int to_clear = (bump_bit | clear_low); | |
5114 // Align up mod 8, then store a jint zero unconditionally | |
5115 // just before the mod-8 boundary. | |
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5116 if (((abase + bump_bit) & ~to_clear) - bump_bit |
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5117 < arrayOopDesc::length_offset_in_bytes() + BytesPerInt) { |
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5118 bump_bit = 0; |
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5119 assert((abase & to_clear) == 0, "array base must be long-aligned"); |
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5120 } else { |
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5121 // Bump 'start' up to (or past) the next jint boundary: |
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5122 start = _gvn.transform( new(C) AddXNode(start, MakeConX(bump_bit)) ); |
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5123 assert((abase & clear_low) == 0, "array base must be int-aligned"); |
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5124 } |
0 | 5125 // Round bumped 'start' down to jlong boundary in body of array. |
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5126 start = _gvn.transform( new(C) AndXNode(start, MakeConX(~to_clear)) ); |
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5127 if (bump_bit != 0) { |
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5128 // Store a zero to the immediately preceding jint: |
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5129 Node* x1 = _gvn.transform( new(C) AddXNode(start, MakeConX(-bump_bit)) ); |
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5130 Node* p1 = basic_plus_adr(dest, x1); |
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5131 mem = StoreNode::make(_gvn, control(), mem, p1, adr_type, intcon(0), T_INT); |
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5132 mem = _gvn.transform(mem); |
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5133 } |
0 | 5134 } |
5135 Node* end = dest_size; // pre-rounded | |
5136 mem = ClearArrayNode::clear_memory(control(), mem, dest, | |
5137 start, end, &_gvn); | |
5138 } else { | |
5139 // Non-constant start, unrounded non-constant end. | |
5140 // (Nobody zeroes a random midsection of an array using this routine.) | |
5141 ShouldNotReachHere(); // fix caller | |
5142 } | |
5143 | |
5144 // Done. | |
5145 set_memory(mem, adr_type); | |
5146 } | |
5147 | |
5148 | |
5149 bool | |
5150 LibraryCallKit::generate_block_arraycopy(const TypePtr* adr_type, | |
5151 BasicType basic_elem_type, | |
5152 AllocateNode* alloc, | |
5153 Node* src, Node* src_offset, | |
5154 Node* dest, Node* dest_offset, | |
2324 | 5155 Node* dest_size, bool dest_uninitialized) { |
0 | 5156 // See if there is an advantage from block transfer. |
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|
5157 int scale = exact_log2(type2aelembytes(basic_elem_type)); |
0 | 5158 if (scale >= LogBytesPerLong) |
5159 return false; // it is already a block transfer | |
5160 | |
5161 // Look at the alignment of the starting offsets. | |
5162 int abase = arrayOopDesc::base_offset_in_bytes(basic_elem_type); | |
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5163 |
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5164 intptr_t src_off_con = (intptr_t) find_int_con(src_offset, -1); |
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5165 intptr_t dest_off_con = (intptr_t) find_int_con(dest_offset, -1); |
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5166 if (src_off_con < 0 || dest_off_con < 0) |
0 | 5167 // At present, we can only understand constants. |
5168 return false; | |
5169 | |
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5170 intptr_t src_off = abase + (src_off_con << scale); |
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5171 intptr_t dest_off = abase + (dest_off_con << scale); |
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5172 |
0 | 5173 if (((src_off | dest_off) & (BytesPerLong-1)) != 0) { |
5174 // Non-aligned; too bad. | |
5175 // One more chance: Pick off an initial 32-bit word. | |
5176 // This is a common case, since abase can be odd mod 8. | |
5177 if (((src_off | dest_off) & (BytesPerLong-1)) == BytesPerInt && | |
5178 ((src_off ^ dest_off) & (BytesPerLong-1)) == 0) { | |
5179 Node* sptr = basic_plus_adr(src, src_off); | |
5180 Node* dptr = basic_plus_adr(dest, dest_off); | |
5181 Node* sval = make_load(control(), sptr, TypeInt::INT, T_INT, adr_type); | |
5182 store_to_memory(control(), dptr, sval, T_INT, adr_type); | |
5183 src_off += BytesPerInt; | |
5184 dest_off += BytesPerInt; | |
5185 } else { | |
5186 return false; | |
5187 } | |
5188 } | |
5189 assert(src_off % BytesPerLong == 0, ""); | |
5190 assert(dest_off % BytesPerLong == 0, ""); | |
5191 | |
5192 // Do this copy by giant steps. | |
5193 Node* sptr = basic_plus_adr(src, src_off); | |
5194 Node* dptr = basic_plus_adr(dest, dest_off); | |
5195 Node* countx = dest_size; | |
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5196 countx = _gvn.transform( new (C) SubXNode(countx, MakeConX(dest_off)) ); |
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5197 countx = _gvn.transform( new (C) URShiftXNode(countx, intcon(LogBytesPerLong)) ); |
0 | 5198 |
5199 bool disjoint_bases = true; // since alloc != NULL | |
5200 generate_unchecked_arraycopy(adr_type, T_LONG, disjoint_bases, | |
2324 | 5201 sptr, NULL, dptr, NULL, countx, dest_uninitialized); |
0 | 5202 |
5203 return true; | |
5204 } | |
5205 | |
5206 | |
5207 // Helper function; generates code for the slow case. | |
5208 // We make a call to a runtime method which emulates the native method, | |
5209 // but without the native wrapper overhead. | |
5210 void | |
5211 LibraryCallKit::generate_slow_arraycopy(const TypePtr* adr_type, | |
5212 Node* src, Node* src_offset, | |
5213 Node* dest, Node* dest_offset, | |
2324 | 5214 Node* copy_length, bool dest_uninitialized) { |
5215 assert(!dest_uninitialized, "Invariant"); | |
0 | 5216 Node* call = make_runtime_call(RC_NO_LEAF | RC_UNCOMMON, |
5217 OptoRuntime::slow_arraycopy_Type(), | |
5218 OptoRuntime::slow_arraycopy_Java(), | |
5219 "slow_arraycopy", adr_type, | |
5220 src, src_offset, dest, dest_offset, | |
5221 copy_length); | |
5222 | |
5223 // Handle exceptions thrown by this fellow: | |
5224 make_slow_call_ex(call, env()->Throwable_klass(), false); | |
5225 } | |
5226 | |
5227 // Helper function; generates code for cases requiring runtime checks. | |
5228 Node* | |
5229 LibraryCallKit::generate_checkcast_arraycopy(const TypePtr* adr_type, | |
5230 Node* dest_elem_klass, | |
5231 Node* src, Node* src_offset, | |
5232 Node* dest, Node* dest_offset, | |
2324 | 5233 Node* copy_length, bool dest_uninitialized) { |
0 | 5234 if (stopped()) return NULL; |
5235 | |
2324 | 5236 address copyfunc_addr = StubRoutines::checkcast_arraycopy(dest_uninitialized); |
0 | 5237 if (copyfunc_addr == NULL) { // Stub was not generated, go slow path. |
5238 return NULL; | |
5239 } | |
5240 | |
5241 // Pick out the parameters required to perform a store-check | |
5242 // for the target array. This is an optimistic check. It will | |
5243 // look in each non-null element's class, at the desired klass's | |
5244 // super_check_offset, for the desired klass. | |
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5245 int sco_offset = in_bytes(Klass::super_check_offset_offset()); |
0 | 5246 Node* p3 = basic_plus_adr(dest_elem_klass, sco_offset); |
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5247 Node* n3 = new(C) LoadINode(NULL, memory(p3), p3, _gvn.type(p3)->is_ptr()); |
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5248 Node* check_offset = ConvI2X(_gvn.transform(n3)); |
0 | 5249 Node* check_value = dest_elem_klass; |
5250 | |
5251 Node* src_start = array_element_address(src, src_offset, T_OBJECT); | |
5252 Node* dest_start = array_element_address(dest, dest_offset, T_OBJECT); | |
5253 | |
5254 // (We know the arrays are never conjoint, because their types differ.) | |
5255 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5256 OptoRuntime::checkcast_arraycopy_Type(), | |
5257 copyfunc_addr, "checkcast_arraycopy", adr_type, | |
5258 // five arguments, of which two are | |
5259 // intptr_t (jlong in LP64) | |
5260 src_start, dest_start, | |
5261 copy_length XTOP, | |
5262 check_offset XTOP, | |
5263 check_value); | |
5264 | |
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5265 return _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
0 | 5266 } |
5267 | |
5268 | |
5269 // Helper function; generates code for cases requiring runtime checks. | |
5270 Node* | |
5271 LibraryCallKit::generate_generic_arraycopy(const TypePtr* adr_type, | |
5272 Node* src, Node* src_offset, | |
5273 Node* dest, Node* dest_offset, | |
2324 | 5274 Node* copy_length, bool dest_uninitialized) { |
5275 assert(!dest_uninitialized, "Invariant"); | |
0 | 5276 if (stopped()) return NULL; |
5277 address copyfunc_addr = StubRoutines::generic_arraycopy(); | |
5278 if (copyfunc_addr == NULL) { // Stub was not generated, go slow path. | |
5279 return NULL; | |
5280 } | |
5281 | |
5282 Node* call = make_runtime_call(RC_LEAF|RC_NO_FP, | |
5283 OptoRuntime::generic_arraycopy_Type(), | |
5284 copyfunc_addr, "generic_arraycopy", adr_type, | |
5285 src, src_offset, dest, dest_offset, copy_length); | |
5286 | |
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5287 return _gvn.transform(new (C) ProjNode(call, TypeFunc::Parms)); |
0 | 5288 } |
5289 | |
5290 // Helper function; generates the fast out-of-line call to an arraycopy stub. | |
5291 void | |
5292 LibraryCallKit::generate_unchecked_arraycopy(const TypePtr* adr_type, | |
5293 BasicType basic_elem_type, | |
5294 bool disjoint_bases, | |
5295 Node* src, Node* src_offset, | |
5296 Node* dest, Node* dest_offset, | |
2324 | 5297 Node* copy_length, bool dest_uninitialized) { |
0 | 5298 if (stopped()) return; // nothing to do |
5299 | |
5300 Node* src_start = src; | |
5301 Node* dest_start = dest; | |
5302 if (src_offset != NULL || dest_offset != NULL) { | |
5303 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5304 src_start = array_element_address(src, src_offset, basic_elem_type); | |
5305 dest_start = array_element_address(dest, dest_offset, basic_elem_type); | |
5306 } | |
5307 | |
5308 // Figure out which arraycopy runtime method to call. | |
5309 const char* copyfunc_name = "arraycopy"; | |
5310 address copyfunc_addr = | |
5311 basictype2arraycopy(basic_elem_type, src_offset, dest_offset, | |
2324 | 5312 disjoint_bases, copyfunc_name, dest_uninitialized); |
0 | 5313 |
5314 // Call it. Note that the count_ix value is not scaled to a byte-size. | |
5315 make_runtime_call(RC_LEAF|RC_NO_FP, | |
5316 OptoRuntime::fast_arraycopy_Type(), | |
5317 copyfunc_addr, copyfunc_name, adr_type, | |
5318 src_start, dest_start, copy_length XTOP); | |
5319 } | |
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5320 |
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5321 //-------------inline_encodeISOArray----------------------------------- |
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5322 // encode char[] to byte[] in ISO_8859_1 |
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5323 bool LibraryCallKit::inline_encodeISOArray() { |
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changeset
|
5324 assert(callee()->signature()->size() == 5, "encodeISOArray has 5 parameters"); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5325 // no receiver since it is static method |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5326 Node *src = argument(0); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5327 Node *src_offset = argument(1); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5328 Node *dst = argument(2); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5329 Node *dst_offset = argument(3); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5330 Node *length = argument(4); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5331 |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5332 const Type* src_type = src->Value(&_gvn); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5333 const Type* dst_type = dst->Value(&_gvn); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5334 const TypeAryPtr* top_src = src_type->isa_aryptr(); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5335 const TypeAryPtr* top_dest = dst_type->isa_aryptr(); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5336 if (top_src == NULL || top_src->klass() == NULL || |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5337 top_dest == NULL || top_dest->klass() == NULL) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5338 // failed array check |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5339 return false; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5340 } |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5341 |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5342 // Figure out the size and type of the elements we will be copying. |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5343 BasicType src_elem = src_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5344 BasicType dst_elem = dst_type->isa_aryptr()->klass()->as_array_klass()->element_type()->basic_type(); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5345 if (src_elem != T_CHAR || dst_elem != T_BYTE) { |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5346 return false; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5347 } |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5348 Node* src_start = array_element_address(src, src_offset, src_elem); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5349 Node* dst_start = array_element_address(dst, dst_offset, dst_elem); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5350 // 'src_start' points to src array + scaled offset |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5351 // 'dst_start' points to dst array + scaled offset |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5352 |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5353 const TypeAryPtr* mtype = TypeAryPtr::BYTES; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5354 Node* enc = new (C) EncodeISOArrayNode(control(), memory(mtype), src_start, dst_start, length); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5355 enc = _gvn.transform(enc); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5356 Node* res_mem = _gvn.transform(new (C) SCMemProjNode(enc)); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5357 set_memory(res_mem, mtype); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5358 set_result(enc); |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5359 return true; |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5360 } |
b30b3c2a0cf2
6896617: Optimize sun.nio.cs.ISO_8859_1$Encode.encodeArrayLoop() on x86
kvn
parents:
7602
diff
changeset
|
5361 |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5362 //----------------------------inline_reference_get---------------------------- |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5363 // public T java.lang.ref.Reference.get(); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5364 bool LibraryCallKit::inline_reference_get() { |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5365 const int referent_offset = java_lang_ref_Reference::referent_offset; |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5366 guarantee(referent_offset > 0, "should have already been set"); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5367 |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5368 // Get the argument: |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5369 Node* reference_obj = null_check_receiver(); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5370 if (stopped()) return true; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5371 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5372 Node* adr = basic_plus_adr(reference_obj, reference_obj, referent_offset); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5373 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5374 ciInstanceKlass* klass = env()->Object_klass(); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5375 const TypeOopPtr* object_type = TypeOopPtr::make_from_klass(klass); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5376 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5377 Node* no_ctrl = NULL; |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5378 Node* result = make_load(no_ctrl, adr, object_type, T_OBJECT); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5379 |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5380 // Use the pre-barrier to record the value in the referent field |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5381 pre_barrier(false /* do_load */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5382 control(), |
3258
edd9b016deb6
7036021: G1: build failure on win64 and linux with hs21 in jdk6 build environment
johnc
parents:
3255
diff
changeset
|
5383 NULL /* obj */, NULL /* adr */, max_juint /* alias_idx */, NULL /* val */, NULL /* val_type */, |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5384 result /* pre_val */, |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5385 T_OBJECT); |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5386 |
6615
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
5387 // Add memory barrier to prevent commoning reads from this field |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
5388 // across safepoint since GC can change its value. |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
5389 insert_mem_bar(Op_MemBarCPUOrder); |
09aad8452938
7190310: Inlining WeakReference.get(), and hoisting $referent may lead to non-terminating loops
kvn
parents:
6266
diff
changeset
|
5390 |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5391 set_result(result); |
3249
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5392 return true; |
e1162778c1c8
7009266: G1: assert(obj->is_oop_or_null(true )) failed: Error
johnc
parents:
2385
diff
changeset
|
5393 } |
6894 | 5394 |
5395 | |
5396 Node * LibraryCallKit::load_field_from_object(Node * fromObj, const char * fieldName, const char * fieldTypeString, | |
5397 bool is_exact=true, bool is_static=false) { | |
5398 | |
5399 const TypeInstPtr* tinst = _gvn.type(fromObj)->isa_instptr(); | |
5400 assert(tinst != NULL, "obj is null"); | |
5401 assert(tinst->klass()->is_loaded(), "obj is not loaded"); | |
5402 assert(!is_exact || tinst->klass_is_exact(), "klass not exact"); | |
5403 | |
5404 ciField* field = tinst->klass()->as_instance_klass()->get_field_by_name(ciSymbol::make(fieldName), | |
5405 ciSymbol::make(fieldTypeString), | |
5406 is_static); | |
5407 if (field == NULL) return (Node *) NULL; | |
5408 assert (field != NULL, "undefined field"); | |
5409 | |
5410 // Next code copied from Parse::do_get_xxx(): | |
5411 | |
5412 // Compute address and memory type. | |
5413 int offset = field->offset_in_bytes(); | |
5414 bool is_vol = field->is_volatile(); | |
5415 ciType* field_klass = field->type(); | |
5416 assert(field_klass->is_loaded(), "should be loaded"); | |
5417 const TypePtr* adr_type = C->alias_type(field)->adr_type(); | |
5418 Node *adr = basic_plus_adr(fromObj, fromObj, offset); | |
5419 BasicType bt = field->layout_type(); | |
5420 | |
5421 // Build the resultant type of the load | |
5422 const Type *type = TypeOopPtr::make_from_klass(field_klass->as_klass()); | |
5423 | |
5424 // Build the load. | |
5425 Node* loadedField = make_load(NULL, adr, type, bt, adr_type, is_vol); | |
5426 return loadedField; | |
5427 } | |
5428 | |
5429 | |
5430 //------------------------------inline_aescrypt_Block----------------------- | |
5431 bool LibraryCallKit::inline_aescrypt_Block(vmIntrinsics::ID id) { | |
5432 address stubAddr; | |
5433 const char *stubName; | |
5434 assert(UseAES, "need AES instruction support"); | |
5435 | |
5436 switch(id) { | |
5437 case vmIntrinsics::_aescrypt_encryptBlock: | |
5438 stubAddr = StubRoutines::aescrypt_encryptBlock(); | |
5439 stubName = "aescrypt_encryptBlock"; | |
5440 break; | |
5441 case vmIntrinsics::_aescrypt_decryptBlock: | |
5442 stubAddr = StubRoutines::aescrypt_decryptBlock(); | |
5443 stubName = "aescrypt_decryptBlock"; | |
5444 break; | |
5445 } | |
5446 if (stubAddr == NULL) return false; | |
5447 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5448 Node* aescrypt_object = argument(0); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5449 Node* src = argument(1); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5450 Node* src_offset = argument(2); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5451 Node* dest = argument(3); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5452 Node* dest_offset = argument(4); |
6894 | 5453 |
5454 // (1) src and dest are arrays. | |
5455 const Type* src_type = src->Value(&_gvn); | |
5456 const Type* dest_type = dest->Value(&_gvn); | |
5457 const TypeAryPtr* top_src = src_type->isa_aryptr(); | |
5458 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); | |
5459 assert (top_src != NULL && top_src->klass() != NULL && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); | |
5460 | |
5461 // for the quick and dirty code we will skip all the checks. | |
5462 // we are just trying to get the call to be generated. | |
5463 Node* src_start = src; | |
5464 Node* dest_start = dest; | |
5465 if (src_offset != NULL || dest_offset != NULL) { | |
5466 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5467 src_start = array_element_address(src, src_offset, T_BYTE); | |
5468 dest_start = array_element_address(dest, dest_offset, T_BYTE); | |
5469 } | |
5470 | |
5471 // now need to get the start of its expanded key array | |
5472 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java | |
5473 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); | |
5474 if (k_start == NULL) return false; | |
5475 | |
5476 // Call the stub. | |
5477 make_runtime_call(RC_LEAF|RC_NO_FP, OptoRuntime::aescrypt_block_Type(), | |
5478 stubAddr, stubName, TypePtr::BOTTOM, | |
5479 src_start, dest_start, k_start); | |
5480 | |
5481 return true; | |
5482 } | |
5483 | |
5484 //------------------------------inline_cipherBlockChaining_AESCrypt----------------------- | |
5485 bool LibraryCallKit::inline_cipherBlockChaining_AESCrypt(vmIntrinsics::ID id) { | |
5486 address stubAddr; | |
5487 const char *stubName; | |
5488 | |
5489 assert(UseAES, "need AES instruction support"); | |
5490 | |
5491 switch(id) { | |
5492 case vmIntrinsics::_cipherBlockChaining_encryptAESCrypt: | |
5493 stubAddr = StubRoutines::cipherBlockChaining_encryptAESCrypt(); | |
5494 stubName = "cipherBlockChaining_encryptAESCrypt"; | |
5495 break; | |
5496 case vmIntrinsics::_cipherBlockChaining_decryptAESCrypt: | |
5497 stubAddr = StubRoutines::cipherBlockChaining_decryptAESCrypt(); | |
5498 stubName = "cipherBlockChaining_decryptAESCrypt"; | |
5499 break; | |
5500 } | |
5501 if (stubAddr == NULL) return false; | |
5502 | |
7194
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5503 Node* cipherBlockChaining_object = argument(0); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5504 Node* src = argument(1); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5505 Node* src_offset = argument(2); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5506 Node* len = argument(3); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5507 Node* dest = argument(4); |
beebba0acc11
7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
twisti
parents:
6894
diff
changeset
|
5508 Node* dest_offset = argument(5); |
6894 | 5509 |
5510 // (1) src and dest are arrays. | |
5511 const Type* src_type = src->Value(&_gvn); | |
5512 const Type* dest_type = dest->Value(&_gvn); | |
5513 const TypeAryPtr* top_src = src_type->isa_aryptr(); | |
5514 const TypeAryPtr* top_dest = dest_type->isa_aryptr(); | |
5515 assert (top_src != NULL && top_src->klass() != NULL | |
5516 && top_dest != NULL && top_dest->klass() != NULL, "args are strange"); | |
5517 | |
5518 // checks are the responsibility of the caller | |
5519 Node* src_start = src; | |
5520 Node* dest_start = dest; | |
5521 if (src_offset != NULL || dest_offset != NULL) { | |
5522 assert(src_offset != NULL && dest_offset != NULL, ""); | |
5523 src_start = array_element_address(src, src_offset, T_BYTE); | |
5524 dest_start = array_element_address(dest, dest_offset, T_BYTE); | |
5525 } | |
5526 | |
5527 // if we are in this set of code, we "know" the embeddedCipher is an AESCrypt object | |
5528 // (because of the predicated logic executed earlier). | |
5529 // so we cast it here safely. | |
5530 // this requires a newer class file that has this array as littleEndian ints, otherwise we revert to java | |
5531 | |
5532 Node* embeddedCipherObj = load_field_from_object(cipherBlockChaining_object, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); | |
5533 if (embeddedCipherObj == NULL) return false; | |
5534 | |
5535 // cast it to what we know it will be at runtime | |
5536 const TypeInstPtr* tinst = _gvn.type(cipherBlockChaining_object)->isa_instptr(); | |
5537 assert(tinst != NULL, "CBC obj is null"); | |
5538 assert(tinst->klass()->is_loaded(), "CBC obj is not loaded"); | |
5539 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); | |
5540 if (!klass_AESCrypt->is_loaded()) return false; | |
5541 | |
5542 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); | |
5543 const TypeKlassPtr* aklass = TypeKlassPtr::make(instklass_AESCrypt); | |
5544 const TypeOopPtr* xtype = aklass->as_instance_type(); | |
5545 Node* aescrypt_object = new(C) CheckCastPPNode(control(), embeddedCipherObj, xtype); | |
5546 aescrypt_object = _gvn.transform(aescrypt_object); | |
5547 | |
5548 // we need to get the start of the aescrypt_object's expanded key array | |
5549 Node* k_start = get_key_start_from_aescrypt_object(aescrypt_object); | |
5550 if (k_start == NULL) return false; | |
5551 | |
5552 // similarly, get the start address of the r vector | |
5553 Node* objRvec = load_field_from_object(cipherBlockChaining_object, "r", "[B", /*is_exact*/ false); | |
5554 if (objRvec == NULL) return false; | |
5555 Node* r_start = array_element_address(objRvec, intcon(0), T_BYTE); | |
5556 | |
5557 // Call the stub, passing src_start, dest_start, k_start, r_start and src_len | |
5558 make_runtime_call(RC_LEAF|RC_NO_FP, | |
5559 OptoRuntime::cipherBlockChaining_aescrypt_Type(), | |
5560 stubAddr, stubName, TypePtr::BOTTOM, | |
5561 src_start, dest_start, k_start, r_start, len); | |
5562 | |
5563 // return is void so no result needs to be pushed | |
5564 | |
5565 return true; | |
5566 } | |
5567 | |
5568 //------------------------------get_key_start_from_aescrypt_object----------------------- | |
5569 Node * LibraryCallKit::get_key_start_from_aescrypt_object(Node *aescrypt_object) { | |
5570 Node* objAESCryptKey = load_field_from_object(aescrypt_object, "K", "[I", /*is_exact*/ false); | |
5571 assert (objAESCryptKey != NULL, "wrong version of com.sun.crypto.provider.AESCrypt"); | |
5572 if (objAESCryptKey == NULL) return (Node *) NULL; | |
5573 | |
5574 // now have the array, need to get the start address of the K array | |
5575 Node* k_start = array_element_address(objAESCryptKey, intcon(0), T_INT); | |
5576 return k_start; | |
5577 } | |
5578 | |
5579 //----------------------------inline_cipherBlockChaining_AESCrypt_predicate---------------------------- | |
5580 // Return node representing slow path of predicate check. | |
5581 // the pseudo code we want to emulate with this predicate is: | |
5582 // for encryption: | |
5583 // if (embeddedCipherObj instanceof AESCrypt) do_intrinsic, else do_javapath | |
5584 // for decryption: | |
5585 // if ((embeddedCipherObj instanceof AESCrypt) && (cipher!=plain)) do_intrinsic, else do_javapath | |
5586 // note cipher==plain is more conservative than the original java code but that's OK | |
5587 // | |
5588 Node* LibraryCallKit::inline_cipherBlockChaining_AESCrypt_predicate(bool decrypting) { | |
5589 // First, check receiver for NULL since it is virtual method. | |
5590 Node* objCBC = argument(0); | |
7194
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7172640: C2: instrinsic implementations in LibraryCallKit should use argument() instead of pop()
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changeset
|
5591 objCBC = null_check(objCBC); |
6894 | 5592 |
5593 if (stopped()) return NULL; // Always NULL | |
5594 | |
5595 // Load embeddedCipher field of CipherBlockChaining object. | |
5596 Node* embeddedCipherObj = load_field_from_object(objCBC, "embeddedCipher", "Lcom/sun/crypto/provider/SymmetricCipher;", /*is_exact*/ false); | |
5597 | |
5598 // get AESCrypt klass for instanceOf check | |
5599 // AESCrypt might not be loaded yet if some other SymmetricCipher got us to this compile point | |
5600 // will have same classloader as CipherBlockChaining object | |
5601 const TypeInstPtr* tinst = _gvn.type(objCBC)->isa_instptr(); | |
5602 assert(tinst != NULL, "CBCobj is null"); | |
5603 assert(tinst->klass()->is_loaded(), "CBCobj is not loaded"); | |
5604 | |
5605 // we want to do an instanceof comparison against the AESCrypt class | |
5606 ciKlass* klass_AESCrypt = tinst->klass()->as_instance_klass()->find_klass(ciSymbol::make("com/sun/crypto/provider/AESCrypt")); | |
5607 if (!klass_AESCrypt->is_loaded()) { | |
5608 // if AESCrypt is not even loaded, we never take the intrinsic fast path | |
5609 Node* ctrl = control(); | |
5610 set_control(top()); // no regular fast path | |
5611 return ctrl; | |
5612 } | |
5613 ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass(); | |
5614 | |
5615 Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt))); | |
5616 Node* cmp_instof = _gvn.transform(new (C) CmpINode(instof, intcon(1))); | |
5617 Node* bool_instof = _gvn.transform(new (C) BoolNode(cmp_instof, BoolTest::ne)); | |
5618 | |
5619 Node* instof_false = generate_guard(bool_instof, NULL, PROB_MIN); | |
5620 | |
5621 // for encryption, we are done | |
5622 if (!decrypting) | |
5623 return instof_false; // even if it is NULL | |
5624 | |
5625 // for decryption, we need to add a further check to avoid | |
5626 // taking the intrinsic path when cipher and plain are the same | |
5627 // see the original java code for why. | |
5628 RegionNode* region = new(C) RegionNode(3); | |
5629 region->init_req(1, instof_false); | |
5630 Node* src = argument(1); | |
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|
5631 Node* dest = argument(4); |
6894 | 5632 Node* cmp_src_dest = _gvn.transform(new (C) CmpPNode(src, dest)); |
5633 Node* bool_src_dest = _gvn.transform(new (C) BoolNode(cmp_src_dest, BoolTest::eq)); | |
5634 Node* src_dest_conjoint = generate_guard(bool_src_dest, NULL, PROB_MIN); | |
5635 region->init_req(2, src_dest_conjoint); | |
5636 | |
5637 record_for_igvn(region); | |
5638 return _gvn.transform(region); | |
5639 } |