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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 97 ExtraICState extra_ic_state); | 97 ExtraICState extra_ic_state); |
| 98 | 98 |
| 99 Handle<Code> ComputeLoadNonexistent(Handle<Name> name, Handle<HeapType> type); | 99 Handle<Code> ComputeLoadNonexistent(Handle<Name> name, Handle<HeapType> type); |
| 100 | 100 |
| 101 Handle<Code> ComputeKeyedLoadElement(Handle<Map> receiver_map); | 101 Handle<Code> ComputeKeyedLoadElement(Handle<Map> receiver_map); |
| 102 | 102 |
| 103 Handle<Code> ComputeKeyedStoreElement(Handle<Map> receiver_map, | 103 Handle<Code> ComputeKeyedStoreElement(Handle<Map> receiver_map, |
| 104 StrictModeFlag strict_mode, | 104 StrictModeFlag strict_mode, |
| 105 KeyedAccessStoreMode store_mode); | 105 KeyedAccessStoreMode store_mode); |
| 106 | 106 |
| 107 Handle<Code> ComputeCallField(int argc, | |
| 108 Code::Kind, | |
| 109 ExtraICState extra_state, | |
| 110 Handle<Name> name, | |
| 111 Handle<Object> object, | |
| 112 Handle<JSObject> holder, | |
| 113 PropertyIndex index); | |
| 114 | |
| 115 Handle<Code> ComputeCallConstant(int argc, | |
| 116 Code::Kind, | |
| 117 ExtraICState extra_state, | |
| 118 Handle<Name> name, | |
| 119 Handle<Object> object, | |
| 120 Handle<JSObject> holder, | |
| 121 Handle<JSFunction> function); | |
| 122 | |
| 123 Handle<Code> ComputeCallInterceptor(int argc, | |
| 124 Code::Kind, | |
| 125 ExtraICState extra_state, | |
| 126 Handle<Name> name, | |
| 127 Handle<Object> object, | |
| 128 Handle<JSObject> holder); | |
| 129 | |
| 130 Handle<Code> ComputeCallGlobal(int argc, | |
| 131 Code::Kind, | |
| 132 ExtraICState extra_state, | |
| 133 Handle<Name> name, | |
| 134 Handle<JSObject> object, | |
| 135 Handle<GlobalObject> holder, | |
| 136 Handle<PropertyCell> cell, | |
| 137 Handle<JSFunction> function); | |
| 138 | |
| 139 // --- | |
| 140 | |
| 141 Handle<Code> ComputeCallInitialize(int argc); | |
| 142 | |
| 143 Handle<Code> ComputeKeyedCallInitialize(int argc); | |
| 144 | |
| 145 Handle<Code> ComputeCallPreMonomorphic(int argc, | |
| 146 Code::Kind kind, | |
| 147 ExtraICState extra_state); | |
| 148 | |
| 149 Handle<Code> ComputeCallNormal(int argc, | |
| 150 Code::Kind kind, | |
| 151 ExtraICState state); | |
| 152 | |
| 153 Handle<Code> ComputeCallArguments(int argc); | |
| 154 | |
| 155 Handle<Code> ComputeCallMegamorphic(int argc, | |
| 156 Code::Kind kind, | |
| 157 ExtraICState state); | |
| 158 | |
| 159 Handle<Code> ComputeCallMiss(int argc, | |
| 160 Code::Kind kind, | |
| 161 ExtraICState state); | |
| 162 | |
| 163 // --- | 107 // --- |
| 164 | 108 |
| 165 Handle<Code> ComputeLoad(InlineCacheState ic_state, ExtraICState extra_state); | 109 Handle<Code> ComputeLoad(InlineCacheState ic_state, ExtraICState extra_state); |
| 166 Handle<Code> ComputeStore(InlineCacheState ic_state, | 110 Handle<Code> ComputeStore(InlineCacheState ic_state, |
| 167 ExtraICState extra_state); | 111 ExtraICState extra_state); |
| 168 | 112 |
| 169 // --- | 113 // --- |
| 170 | 114 |
| 171 Handle<Code> ComputeCompareNil(Handle<Map> receiver_map, | 115 Handle<Code> ComputeCompareNil(Handle<Map> receiver_map, |
| 172 CompareNilICStub& stub); | 116 CompareNilICStub& stub); |
| 173 | 117 |
| 174 // --- | 118 // --- |
| 175 | 119 |
| 176 Handle<Code> ComputeLoadElementPolymorphic(MapHandleList* receiver_maps); | 120 Handle<Code> ComputeLoadElementPolymorphic(MapHandleList* receiver_maps); |
| 177 Handle<Code> ComputeStoreElementPolymorphic(MapHandleList* receiver_maps, | 121 Handle<Code> ComputeStoreElementPolymorphic(MapHandleList* receiver_maps, |
| 178 KeyedAccessStoreMode store_mode, | 122 KeyedAccessStoreMode store_mode, |
| 179 StrictModeFlag strict_mode); | 123 StrictModeFlag strict_mode); |
| 180 | 124 |
| 181 Handle<Code> ComputePolymorphicIC(TypeHandleList* types, | 125 Handle<Code> ComputePolymorphicIC(TypeHandleList* types, |
| 182 CodeHandleList* handlers, | 126 CodeHandleList* handlers, |
| 183 int number_of_valid_maps, | 127 int number_of_valid_maps, |
| 184 Handle<Name> name, | 128 Handle<Name> name, |
| 185 ExtraICState extra_ic_state); | 129 ExtraICState extra_ic_state); |
| 186 | 130 |
| 187 // Finds the Code object stored in the Heap::non_monomorphic_cache(). | 131 // Finds the Code object stored in the Heap::non_monomorphic_cache(). |
| 188 Code* FindCallInitialize(int argc, Code::Kind kind); | |
| 189 Code* FindPreMonomorphicIC(Code::Kind kind, ExtraICState extra_ic_state); | 132 Code* FindPreMonomorphicIC(Code::Kind kind, ExtraICState extra_ic_state); |
| 190 | 133 |
| 191 #ifdef ENABLE_DEBUGGER_SUPPORT | |
| 192 Handle<Code> ComputeCallDebugBreak(int argc, Code::Kind kind); | |
| 193 | |
| 194 Handle<Code> ComputeCallDebugPrepareStepIn(int argc, Code::Kind kind); | |
| 195 #endif | |
| 196 | |
| 197 // Update cache for entry hash(name, map). | 134 // Update cache for entry hash(name, map). |
| 198 Code* Set(Name* name, Map* map, Code* code); | 135 Code* Set(Name* name, Map* map, Code* code); |
| 199 | 136 |
| 200 // Clear the lookup table (@ mark compact collection). | 137 // Clear the lookup table (@ mark compact collection). |
| 201 void Clear(); | 138 void Clear(); |
| 202 | 139 |
| 203 // Collect all maps that match the name and flags. | 140 // Collect all maps that match the name and flags. |
| 204 void CollectMatchingMaps(SmallMapList* types, | 141 void CollectMatchingMaps(SmallMapList* types, |
| 205 Handle<Name> name, | 142 Handle<Name> name, |
| 206 Code::Flags flags, | 143 Code::Flags flags, |
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| 262 // LoadWithInterceptor. | 199 // LoadWithInterceptor. |
| 263 static const int kInterceptorArgsNameIndex = 0; | 200 static const int kInterceptorArgsNameIndex = 0; |
| 264 static const int kInterceptorArgsInfoIndex = 1; | 201 static const int kInterceptorArgsInfoIndex = 1; |
| 265 static const int kInterceptorArgsThisIndex = 2; | 202 static const int kInterceptorArgsThisIndex = 2; |
| 266 static const int kInterceptorArgsHolderIndex = 3; | 203 static const int kInterceptorArgsHolderIndex = 3; |
| 267 static const int kInterceptorArgsLength = 4; | 204 static const int kInterceptorArgsLength = 4; |
| 268 | 205 |
| 269 private: | 206 private: |
| 270 explicit StubCache(Isolate* isolate); | 207 explicit StubCache(Isolate* isolate); |
| 271 | 208 |
| 272 Handle<Code> ComputeCallInitialize(int argc, Code::Kind kind); | |
| 273 | |
| 274 // The stub cache has a primary and secondary level. The two levels have | 209 // The stub cache has a primary and secondary level. The two levels have |
| 275 // different hashing algorithms in order to avoid simultaneous collisions | 210 // different hashing algorithms in order to avoid simultaneous collisions |
| 276 // in both caches. Unlike a probing strategy (quadratic or otherwise) the | 211 // in both caches. Unlike a probing strategy (quadratic or otherwise) the |
| 277 // update strategy on updates is fairly clear and simple: Any existing entry | 212 // update strategy on updates is fairly clear and simple: Any existing entry |
| 278 // in the primary cache is moved to the secondary cache, and secondary cache | 213 // in the primary cache is moved to the secondary cache, and secondary cache |
| 279 // entries are overwritten. | 214 // entries are overwritten. |
| 280 | 215 |
| 281 // Hash algorithm for the primary table. This algorithm is replicated in | 216 // Hash algorithm for the primary table. This algorithm is replicated in |
| 282 // assembler for every architecture. Returns an index into the table that | 217 // assembler for every architecture. Returns an index into the table that |
| 283 // is scaled by 1 << kHeapObjectTagSize. | 218 // is scaled by 1 << kHeapObjectTagSize. |
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| 351 | 286 |
| 352 // Support functions for IC stubs for callbacks. | 287 // Support functions for IC stubs for callbacks. |
| 353 DECLARE_RUNTIME_FUNCTION(MaybeObject*, StoreCallbackProperty); | 288 DECLARE_RUNTIME_FUNCTION(MaybeObject*, StoreCallbackProperty); |
| 354 | 289 |
| 355 | 290 |
| 356 // Support functions for IC stubs for interceptors. | 291 // Support functions for IC stubs for interceptors. |
| 357 DECLARE_RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorOnly); | 292 DECLARE_RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorOnly); |
| 358 DECLARE_RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorForLoad); | 293 DECLARE_RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorForLoad); |
| 359 DECLARE_RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorForCall); | 294 DECLARE_RUNTIME_FUNCTION(MaybeObject*, LoadPropertyWithInterceptorForCall); |
| 360 DECLARE_RUNTIME_FUNCTION(MaybeObject*, StoreInterceptorProperty); | 295 DECLARE_RUNTIME_FUNCTION(MaybeObject*, StoreInterceptorProperty); |
| 361 DECLARE_RUNTIME_FUNCTION(MaybeObject*, CallInterceptorProperty); | |
| 362 DECLARE_RUNTIME_FUNCTION(MaybeObject*, KeyedLoadPropertyWithInterceptor); | 296 DECLARE_RUNTIME_FUNCTION(MaybeObject*, KeyedLoadPropertyWithInterceptor); |
| 363 | 297 |
| 364 | 298 |
| 365 enum PrototypeCheckType { CHECK_ALL_MAPS, SKIP_RECEIVER }; | 299 enum PrototypeCheckType { CHECK_ALL_MAPS, SKIP_RECEIVER }; |
| 366 enum IcCheckType { ELEMENT, PROPERTY }; | 300 enum IcCheckType { ELEMENT, PROPERTY }; |
| 367 | 301 |
| 368 | 302 |
| 369 // The stub compilers compile stubs for the stub cache. | 303 // The stub compilers compile stubs for the stub cache. |
| 370 class StubCompiler BASE_EMBEDDED { | 304 class StubCompiler BASE_EMBEDDED { |
| 371 public: | 305 public: |
| 372 explicit StubCompiler(Isolate* isolate, | 306 explicit StubCompiler(Isolate* isolate, |
| 373 ExtraICState extra_ic_state = kNoExtraICState) | 307 ExtraICState extra_ic_state = kNoExtraICState) |
| 374 : isolate_(isolate), extra_ic_state_(extra_ic_state), | 308 : isolate_(isolate), extra_ic_state_(extra_ic_state), |
| 375 masm_(isolate, NULL, 256), failure_(NULL) { } | 309 masm_(isolate, NULL, 256), failure_(NULL) { } |
| 376 | 310 |
| 377 // Functions to compile either CallIC or KeyedCallIC. The specific kind | |
| 378 // is extracted from the code flags. | |
| 379 Handle<Code> CompileCallInitialize(Code::Flags flags); | |
| 380 Handle<Code> CompileCallPreMonomorphic(Code::Flags flags); | |
| 381 Handle<Code> CompileCallNormal(Code::Flags flags); | |
| 382 Handle<Code> CompileCallMegamorphic(Code::Flags flags); | |
| 383 Handle<Code> CompileCallArguments(Code::Flags flags); | |
| 384 Handle<Code> CompileCallMiss(Code::Flags flags); | |
| 385 | |
| 386 Handle<Code> CompileLoadInitialize(Code::Flags flags); | 311 Handle<Code> CompileLoadInitialize(Code::Flags flags); |
| 387 Handle<Code> CompileLoadPreMonomorphic(Code::Flags flags); | 312 Handle<Code> CompileLoadPreMonomorphic(Code::Flags flags); |
| 388 Handle<Code> CompileLoadMegamorphic(Code::Flags flags); | 313 Handle<Code> CompileLoadMegamorphic(Code::Flags flags); |
| 389 | 314 |
| 390 Handle<Code> CompileStoreInitialize(Code::Flags flags); | 315 Handle<Code> CompileStoreInitialize(Code::Flags flags); |
| 391 Handle<Code> CompileStorePreMonomorphic(Code::Flags flags); | 316 Handle<Code> CompileStorePreMonomorphic(Code::Flags flags); |
| 392 Handle<Code> CompileStoreGeneric(Code::Flags flags); | 317 Handle<Code> CompileStoreGeneric(Code::Flags flags); |
| 393 Handle<Code> CompileStoreMegamorphic(Code::Flags flags); | 318 Handle<Code> CompileStoreMegamorphic(Code::Flags flags); |
| 394 | 319 |
| 395 #ifdef ENABLE_DEBUGGER_SUPPORT | |
| 396 Handle<Code> CompileCallDebugBreak(Code::Flags flags); | |
| 397 Handle<Code> CompileCallDebugPrepareStepIn(Code::Flags flags); | |
| 398 #endif | |
| 399 | |
| 400 // Static functions for generating parts of stubs. | 320 // Static functions for generating parts of stubs. |
| 401 static void GenerateLoadGlobalFunctionPrototype(MacroAssembler* masm, | 321 static void GenerateLoadGlobalFunctionPrototype(MacroAssembler* masm, |
| 402 int index, | 322 int index, |
| 403 Register prototype); | 323 Register prototype); |
| 404 | 324 |
| 405 // Helper function used to check that the dictionary doesn't contain | 325 // Helper function used to check that the dictionary doesn't contain |
| 406 // the property. This function may return false negatives, so miss_label | 326 // the property. This function may return false negatives, so miss_label |
| 407 // must always call a backup property check that is complete. | 327 // must always call a backup property check that is complete. |
| 408 // This function is safe to call if the receiver has fast properties. | 328 // This function is safe to call if the receiver has fast properties. |
| 409 // Name must be unique and receiver must be a heap object. | 329 // Name must be unique and receiver must be a heap object. |
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| 861 } | 781 } |
| 862 | 782 |
| 863 Register transition_map() { | 783 Register transition_map() { |
| 864 return registers()[3]; | 784 return registers()[3]; |
| 865 } | 785 } |
| 866 | 786 |
| 867 friend class BaseLoadStoreStubCompiler; | 787 friend class BaseLoadStoreStubCompiler; |
| 868 }; | 788 }; |
| 869 | 789 |
| 870 | 790 |
| 871 class CallStubCompiler: public StubCompiler { | |
| 872 public: | |
| 873 CallStubCompiler(Isolate* isolate, | |
| 874 int argc, | |
| 875 Code::Kind kind, | |
| 876 ExtraICState extra_state, | |
| 877 InlineCacheHolderFlag cache_holder = OWN_MAP); | |
| 878 | |
| 879 Handle<Code> CompileCallField(Handle<JSObject> object, | |
| 880 Handle<JSObject> holder, | |
| 881 PropertyIndex index, | |
| 882 Handle<Name> name); | |
| 883 | |
| 884 // Patch the implicit receiver over the global object if the global object is | |
| 885 // the receiver. | |
| 886 void PatchImplicitReceiver(Handle<Object> object); | |
| 887 | |
| 888 // Returns the register containing the holder of |name|. | |
| 889 Register HandlerFrontendHeader(Handle<Object> object, | |
| 890 Handle<JSObject> holder, | |
| 891 Handle<Name> name, | |
| 892 CheckType check, | |
| 893 Label* miss); | |
| 894 void HandlerFrontendFooter(Label* miss); | |
| 895 | |
| 896 void GenerateJumpFunctionIgnoreReceiver(Handle<JSFunction> function); | |
| 897 void GenerateJumpFunction(Handle<Object> object, | |
| 898 Handle<JSFunction> function); | |
| 899 void GenerateJumpFunction(Handle<Object> object, | |
| 900 Register function, | |
| 901 Label* miss); | |
| 902 // Use to call |actual_closure|, a closure with the same shared function info | |
| 903 // as |function|. | |
| 904 void GenerateJumpFunction(Handle<Object> object, | |
| 905 Register actual_closure, | |
| 906 Handle<JSFunction> function); | |
| 907 | |
| 908 Handle<Code> CompileCallConstant(Handle<Object> object, | |
| 909 Handle<JSObject> holder, | |
| 910 Handle<Name> name, | |
| 911 CheckType check, | |
| 912 Handle<JSFunction> function); | |
| 913 | |
| 914 Handle<Code> CompileCallInterceptor(Handle<JSObject> object, | |
| 915 Handle<JSObject> holder, | |
| 916 Handle<Name> name); | |
| 917 | |
| 918 Handle<Code> CompileCallGlobal(Handle<JSObject> object, | |
| 919 Handle<GlobalObject> holder, | |
| 920 Handle<PropertyCell> cell, | |
| 921 Handle<JSFunction> function, | |
| 922 Handle<Name> name); | |
| 923 | |
| 924 private: | |
| 925 Handle<Code> GetCode(Code::StubType type, Handle<Name> name); | |
| 926 Handle<Code> GetCode(Handle<JSFunction> function); | |
| 927 | |
| 928 const ParameterCount& arguments() { return arguments_; } | |
| 929 | |
| 930 void GenerateNameCheck(Handle<Name> name, Label* miss); | |
| 931 | |
| 932 // Generates code to load the function from the cell checking that | |
| 933 // it still contains the same function. | |
| 934 void GenerateLoadFunctionFromCell(Handle<Cell> cell, | |
| 935 Handle<JSFunction> function, | |
| 936 Label* miss); | |
| 937 | |
| 938 void GenerateFunctionCheck(Register function, Register scratch, Label* miss); | |
| 939 | |
| 940 // Generates a jump to CallIC miss stub. | |
| 941 void GenerateMissBranch(); | |
| 942 | |
| 943 const ParameterCount arguments_; | |
| 944 const Code::Kind kind_; | |
| 945 const InlineCacheHolderFlag cache_holder_; | |
| 946 }; | |
| 947 | |
| 948 | |
| 949 // Holds information about possible function call optimizations. | 791 // Holds information about possible function call optimizations. |
| 950 class CallOptimization BASE_EMBEDDED { | 792 class CallOptimization BASE_EMBEDDED { |
| 951 public: | 793 public: |
| 952 explicit CallOptimization(LookupResult* lookup); | 794 explicit CallOptimization(LookupResult* lookup); |
| 953 | 795 |
| 954 explicit CallOptimization(Handle<JSFunction> function); | 796 explicit CallOptimization(Handle<JSFunction> function); |
| 955 | 797 |
| 956 bool is_constant_call() const { | 798 bool is_constant_call() const { |
| 957 return !constant_function_.is_null(); | 799 return !constant_function_.is_null(); |
| 958 } | 800 } |
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| 1001 Handle<JSFunction> constant_function_; | 843 Handle<JSFunction> constant_function_; |
| 1002 bool is_simple_api_call_; | 844 bool is_simple_api_call_; |
| 1003 Handle<FunctionTemplateInfo> expected_receiver_type_; | 845 Handle<FunctionTemplateInfo> expected_receiver_type_; |
| 1004 Handle<CallHandlerInfo> api_call_info_; | 846 Handle<CallHandlerInfo> api_call_info_; |
| 1005 }; | 847 }; |
| 1006 | 848 |
| 1007 | 849 |
| 1008 } } // namespace v8::internal | 850 } } // namespace v8::internal |
| 1009 | 851 |
| 1010 #endif // V8_STUB_CACHE_H_ | 852 #endif // V8_STUB_CACHE_H_ |
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