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| 1 // Copyright 2006-2009 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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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| 38 enum DictionaryCheck { CHECK_DICTIONARY, DICTIONARY_CHECK_DONE }; | 38 enum DictionaryCheck { CHECK_DICTIONARY, DICTIONARY_CHECK_DONE }; |
| 39 | 39 |
| 40 | 40 |
| 41 // IC_UTIL_LIST defines all utility functions called from generated | 41 // IC_UTIL_LIST defines all utility functions called from generated |
| 42 // inline caching code. The argument for the macro, ICU, is the function name. | 42 // inline caching code. The argument for the macro, ICU, is the function name. |
| 43 #define IC_UTIL_LIST(ICU) \ | 43 #define IC_UTIL_LIST(ICU) \ |
| 44 ICU(LoadIC_Miss) \ | 44 ICU(LoadIC_Miss) \ |
| 45 ICU(KeyedLoadIC_Miss) \ | 45 ICU(KeyedLoadIC_Miss) \ |
| 46 ICU(CallIC_Miss) \ | 46 ICU(CallIC_Miss) \ |
| 47 ICU(StoreIC_Miss) \ | 47 ICU(StoreIC_Miss) \ |
| 48 ICU(StoreIC_ArrayLength) \ |
| 48 ICU(SharedStoreIC_ExtendStorage) \ | 49 ICU(SharedStoreIC_ExtendStorage) \ |
| 49 ICU(KeyedStoreIC_Miss) \ | 50 ICU(KeyedStoreIC_Miss) \ |
| 50 /* Utilities for IC stubs. */ \ | 51 /* Utilities for IC stubs. */ \ |
| 51 ICU(LoadCallbackProperty) \ | 52 ICU(LoadCallbackProperty) \ |
| 52 ICU(StoreCallbackProperty) \ | 53 ICU(StoreCallbackProperty) \ |
| 53 ICU(LoadPropertyWithInterceptorOnly) \ | 54 ICU(LoadPropertyWithInterceptorOnly) \ |
| 54 ICU(LoadPropertyWithInterceptorForLoad) \ | 55 ICU(LoadPropertyWithInterceptorForLoad) \ |
| 55 ICU(LoadPropertyWithInterceptorForCall) \ | 56 ICU(LoadPropertyWithInterceptorForCall) \ |
| 57 ICU(KeyedLoadPropertyWithInterceptor) \ |
| 56 ICU(StoreInterceptorProperty) | 58 ICU(StoreInterceptorProperty) |
| 57 | 59 |
| 58 // | 60 // |
| 59 // IC is the base class for LoadIC, StoreIC, CallIC, KeyedLoadIC, | 61 // IC is the base class for LoadIC, StoreIC, CallIC, KeyedLoadIC, |
| 60 // and KeyedStoreIC. | 62 // and KeyedStoreIC. |
| 61 // | 63 // |
| 62 class IC { | 64 class IC { |
| 63 public: | 65 public: |
| 64 | 66 |
| 65 // The ids for utility called from the generated code. | 67 // The ids for utility called from the generated code. |
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| 216 }; | 218 }; |
| 217 | 219 |
| 218 | 220 |
| 219 class LoadIC: public IC { | 221 class LoadIC: public IC { |
| 220 public: | 222 public: |
| 221 LoadIC() : IC(NO_EXTRA_FRAME) { ASSERT(target()->is_load_stub()); } | 223 LoadIC() : IC(NO_EXTRA_FRAME) { ASSERT(target()->is_load_stub()); } |
| 222 | 224 |
| 223 Object* Load(State state, Handle<Object> object, Handle<String> name); | 225 Object* Load(State state, Handle<Object> object, Handle<String> name); |
| 224 | 226 |
| 225 // Code generator routines. | 227 // Code generator routines. |
| 226 static void GenerateInitialize(MacroAssembler* masm); | 228 static void GenerateInitialize(MacroAssembler* masm) { GenerateMiss(masm); } |
| 227 static void GeneratePreMonomorphic(MacroAssembler* masm); | 229 static void GeneratePreMonomorphic(MacroAssembler* masm) { |
| 230 GenerateMiss(masm); |
| 231 } |
| 228 static void GenerateMiss(MacroAssembler* masm); | 232 static void GenerateMiss(MacroAssembler* masm); |
| 229 static void GenerateMegamorphic(MacroAssembler* masm); | 233 static void GenerateMegamorphic(MacroAssembler* masm); |
| 230 static void GenerateNormal(MacroAssembler* masm); | 234 static void GenerateNormal(MacroAssembler* masm); |
| 231 | 235 |
| 232 // Specialized code generator routines. | 236 // Specialized code generator routines. |
| 233 static void GenerateArrayLength(MacroAssembler* masm); | 237 static void GenerateArrayLength(MacroAssembler* masm); |
| 234 static void GenerateStringLength(MacroAssembler* masm); | 238 static void GenerateStringLength(MacroAssembler* masm); |
| 235 static void GenerateFunctionPrototype(MacroAssembler* masm); | 239 static void GenerateFunctionPrototype(MacroAssembler* masm); |
| 236 | 240 |
| 237 // The offset from the inlined patch site to the start of the | 241 // The offset from the inlined patch site to the start of the |
| 238 // inlined load instruction. It is architecture-dependent, and not | 242 // inlined load instruction. It is architecture-dependent, and not |
| 239 // used on ARM. | 243 // used on ARM. |
| 240 static const int kOffsetToLoadInstruction; | 244 static const int kOffsetToLoadInstruction; |
| 241 | 245 |
| 242 private: | 246 private: |
| 243 static void Generate(MacroAssembler* masm, const ExternalReference& f); | |
| 244 | |
| 245 // Update the inline cache and the global stub cache based on the | 247 // Update the inline cache and the global stub cache based on the |
| 246 // lookup result. | 248 // lookup result. |
| 247 void UpdateCaches(LookupResult* lookup, | 249 void UpdateCaches(LookupResult* lookup, |
| 248 State state, | 250 State state, |
| 249 Handle<Object> object, | 251 Handle<Object> object, |
| 250 Handle<String> name); | 252 Handle<String> name); |
| 251 | 253 |
| 252 // Stub accessors. | 254 // Stub accessors. |
| 253 static Code* megamorphic_stub() { | 255 static Code* megamorphic_stub() { |
| 254 return Builtins::builtin(Builtins::LoadIC_Megamorphic); | 256 return Builtins::builtin(Builtins::LoadIC_Megamorphic); |
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| 272 | 274 |
| 273 | 275 |
| 274 class KeyedLoadIC: public IC { | 276 class KeyedLoadIC: public IC { |
| 275 public: | 277 public: |
| 276 KeyedLoadIC() : IC(NO_EXTRA_FRAME) { ASSERT(target()->is_keyed_load_stub()); } | 278 KeyedLoadIC() : IC(NO_EXTRA_FRAME) { ASSERT(target()->is_keyed_load_stub()); } |
| 277 | 279 |
| 278 Object* Load(State state, Handle<Object> object, Handle<Object> key); | 280 Object* Load(State state, Handle<Object> object, Handle<Object> key); |
| 279 | 281 |
| 280 // Code generator routines. | 282 // Code generator routines. |
| 281 static void GenerateMiss(MacroAssembler* masm); | 283 static void GenerateMiss(MacroAssembler* masm); |
| 282 static void GenerateInitialize(MacroAssembler* masm); | 284 static void GenerateRuntimeGetProperty(MacroAssembler* masm); |
| 283 static void GeneratePreMonomorphic(MacroAssembler* masm); | 285 static void GenerateInitialize(MacroAssembler* masm) { GenerateMiss(masm); } |
| 286 static void GeneratePreMonomorphic(MacroAssembler* masm) { |
| 287 GenerateMiss(masm); |
| 288 } |
| 284 static void GenerateGeneric(MacroAssembler* masm); | 289 static void GenerateGeneric(MacroAssembler* masm); |
| 285 static void GenerateString(MacroAssembler* masm); | 290 static void GenerateString(MacroAssembler* masm); |
| 286 | 291 |
| 287 // Generators for external array types. See objects.h. | 292 // Generators for external array types. See objects.h. |
| 288 // These are similar to the generic IC; they optimize the case of | 293 // These are similar to the generic IC; they optimize the case of |
| 289 // operating upon external array types but fall back to the runtime | 294 // operating upon external array types but fall back to the runtime |
| 290 // for all other types. | 295 // for all other types. |
| 291 static void GenerateExternalArray(MacroAssembler* masm, | 296 static void GenerateExternalArray(MacroAssembler* masm, |
| 292 ExternalArrayType array_type); | 297 ExternalArrayType array_type); |
| 298 static void GenerateIndexedInterceptor(MacroAssembler* masm); |
| 293 | 299 |
| 294 // Clear the use of the inlined version. | 300 // Clear the use of the inlined version. |
| 295 static void ClearInlinedVersion(Address address); | 301 static void ClearInlinedVersion(Address address); |
| 296 | 302 |
| 297 private: | 303 private: |
| 298 // Bit mask to be tested against bit field for the cases when | 304 // Bit mask to be tested against bit field for the cases when |
| 299 // generic stub should go into slow case. | 305 // generic stub should go into slow case. |
| 300 // Access check is necessary explicitly since generic stub does not perform | 306 // Access check is necessary explicitly since generic stub does not perform |
| 301 // map checks. | 307 // map checks. |
| 302 static const int kSlowCaseBitFieldMask = | 308 static const int kSlowCaseBitFieldMask = |
| 303 (1 << Map::kIsAccessCheckNeeded) | (1 << Map::kHasIndexedInterceptor); | 309 (1 << Map::kIsAccessCheckNeeded) | (1 << Map::kHasIndexedInterceptor); |
| 304 | 310 |
| 305 static void Generate(MacroAssembler* masm, const ExternalReference& f); | |
| 306 | |
| 307 // Update the inline cache. | 311 // Update the inline cache. |
| 308 void UpdateCaches(LookupResult* lookup, | 312 void UpdateCaches(LookupResult* lookup, |
| 309 State state, | 313 State state, |
| 310 Handle<Object> object, | 314 Handle<Object> object, |
| 311 Handle<String> name); | 315 Handle<String> name); |
| 312 | 316 |
| 313 // Stub accessors. | 317 // Stub accessors. |
| 314 static Code* initialize_stub() { | 318 static Code* initialize_stub() { |
| 315 return Builtins::builtin(Builtins::KeyedLoadIC_Initialize); | 319 return Builtins::builtin(Builtins::KeyedLoadIC_Initialize); |
| 316 } | 320 } |
| 317 static Code* megamorphic_stub() { | 321 static Code* megamorphic_stub() { |
| 318 return Builtins::builtin(Builtins::KeyedLoadIC_Generic); | 322 return Builtins::builtin(Builtins::KeyedLoadIC_Generic); |
| 319 } | 323 } |
| 320 static Code* generic_stub() { | 324 static Code* generic_stub() { |
| 321 return Builtins::builtin(Builtins::KeyedLoadIC_Generic); | 325 return Builtins::builtin(Builtins::KeyedLoadIC_Generic); |
| 322 } | 326 } |
| 323 static Code* pre_monomorphic_stub() { | 327 static Code* pre_monomorphic_stub() { |
| 324 return Builtins::builtin(Builtins::KeyedLoadIC_PreMonomorphic); | 328 return Builtins::builtin(Builtins::KeyedLoadIC_PreMonomorphic); |
| 325 } | 329 } |
| 326 static Code* string_stub() { | 330 static Code* string_stub() { |
| 327 return Builtins::builtin(Builtins::KeyedLoadIC_String); | 331 return Builtins::builtin(Builtins::KeyedLoadIC_String); |
| 328 } | 332 } |
| 329 static Code* external_array_stub(JSObject::ElementsKind elements_kind); | 333 static Code* external_array_stub(JSObject::ElementsKind elements_kind); |
| 330 | 334 |
| 335 static Code* indexed_interceptor_stub() { |
| 336 return Builtins::builtin(Builtins::KeyedLoadIC_IndexedInterceptor); |
| 337 } |
| 338 |
| 331 static void Clear(Address address, Code* target); | 339 static void Clear(Address address, Code* target); |
| 332 | 340 |
| 333 // Support for patching the map that is checked in an inlined | 341 // Support for patching the map that is checked in an inlined |
| 334 // version of keyed load. | 342 // version of keyed load. |
| 335 static bool PatchInlinedLoad(Address address, Object* map); | 343 static bool PatchInlinedLoad(Address address, Object* map); |
| 336 | 344 |
| 337 friend class IC; | 345 friend class IC; |
| 338 }; | 346 }; |
| 339 | 347 |
| 340 | 348 |
| 341 class StoreIC: public IC { | 349 class StoreIC: public IC { |
| 342 public: | 350 public: |
| 343 StoreIC() : IC(NO_EXTRA_FRAME) { ASSERT(target()->is_store_stub()); } | 351 StoreIC() : IC(NO_EXTRA_FRAME) { ASSERT(target()->is_store_stub()); } |
| 344 | 352 |
| 345 Object* Store(State state, | 353 Object* Store(State state, |
| 346 Handle<Object> object, | 354 Handle<Object> object, |
| 347 Handle<String> name, | 355 Handle<String> name, |
| 348 Handle<Object> value); | 356 Handle<Object> value); |
| 349 | 357 |
| 350 // Code generators for stub routines. Only called once at startup. | 358 // Code generators for stub routines. Only called once at startup. |
| 351 static void GenerateInitialize(MacroAssembler* masm) { GenerateMiss(masm); } | 359 static void GenerateInitialize(MacroAssembler* masm) { GenerateMiss(masm); } |
| 352 static void GenerateMiss(MacroAssembler* masm); | 360 static void GenerateMiss(MacroAssembler* masm); |
| 353 static void GenerateMegamorphic(MacroAssembler* masm); | 361 static void GenerateMegamorphic(MacroAssembler* masm); |
| 354 static void GenerateExtendStorage(MacroAssembler* masm); | 362 static void GenerateArrayLength(MacroAssembler* masm); |
| 355 | 363 |
| 356 private: | 364 private: |
| 357 // Update the inline cache and the global stub cache based on the | 365 // Update the inline cache and the global stub cache based on the |
| 358 // lookup result. | 366 // lookup result. |
| 359 void UpdateCaches(LookupResult* lookup, | 367 void UpdateCaches(LookupResult* lookup, |
| 360 State state, Handle<JSObject> receiver, | 368 State state, Handle<JSObject> receiver, |
| 361 Handle<String> name, | 369 Handle<String> name, |
| 362 Handle<Object> value); | 370 Handle<Object> value); |
| 363 | 371 |
| 364 // Stub accessors. | 372 // Stub accessors. |
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| 377 class KeyedStoreIC: public IC { | 385 class KeyedStoreIC: public IC { |
| 378 public: | 386 public: |
| 379 KeyedStoreIC() : IC(NO_EXTRA_FRAME) { } | 387 KeyedStoreIC() : IC(NO_EXTRA_FRAME) { } |
| 380 | 388 |
| 381 Object* Store(State state, | 389 Object* Store(State state, |
| 382 Handle<Object> object, | 390 Handle<Object> object, |
| 383 Handle<Object> name, | 391 Handle<Object> name, |
| 384 Handle<Object> value); | 392 Handle<Object> value); |
| 385 | 393 |
| 386 // Code generators for stub routines. Only called once at startup. | 394 // Code generators for stub routines. Only called once at startup. |
| 387 static void GenerateInitialize(MacroAssembler* masm); | 395 static void GenerateInitialize(MacroAssembler* masm) { GenerateMiss(masm); } |
| 388 static void GenerateMiss(MacroAssembler* masm); | 396 static void GenerateMiss(MacroAssembler* masm); |
| 397 static void GenerateRuntimeSetProperty(MacroAssembler* masm); |
| 389 static void GenerateGeneric(MacroAssembler* masm); | 398 static void GenerateGeneric(MacroAssembler* masm); |
| 390 static void GenerateExtendStorage(MacroAssembler* masm); | |
| 391 | 399 |
| 392 // Generators for external array types. See objects.h. | 400 // Generators for external array types. See objects.h. |
| 393 // These are similar to the generic IC; they optimize the case of | 401 // These are similar to the generic IC; they optimize the case of |
| 394 // operating upon external array types but fall back to the runtime | 402 // operating upon external array types but fall back to the runtime |
| 395 // for all other types. | 403 // for all other types. |
| 396 static void GenerateExternalArray(MacroAssembler* masm, | 404 static void GenerateExternalArray(MacroAssembler* masm, |
| 397 ExternalArrayType array_type); | 405 ExternalArrayType array_type); |
| 398 | 406 |
| 399 // Clear the inlined version so the IC is always hit. | 407 // Clear the inlined version so the IC is always hit. |
| 400 static void ClearInlinedVersion(Address address); | 408 static void ClearInlinedVersion(Address address); |
| 401 | 409 |
| 402 // Restore the inlined version so the fast case can get hit. | 410 // Restore the inlined version so the fast case can get hit. |
| 403 static void RestoreInlinedVersion(Address address); | 411 static void RestoreInlinedVersion(Address address); |
| 404 | 412 |
| 405 private: | 413 private: |
| 406 static void Generate(MacroAssembler* masm, const ExternalReference& f); | |
| 407 | |
| 408 // Update the inline cache. | 414 // Update the inline cache. |
| 409 void UpdateCaches(LookupResult* lookup, | 415 void UpdateCaches(LookupResult* lookup, |
| 410 State state, | 416 State state, |
| 411 Handle<JSObject> receiver, | 417 Handle<JSObject> receiver, |
| 412 Handle<String> name, | 418 Handle<String> name, |
| 413 Handle<Object> value); | 419 Handle<Object> value); |
| 414 | 420 |
| 415 // Stub accessors. | 421 // Stub accessors. |
| 416 static Code* initialize_stub() { | 422 static Code* initialize_stub() { |
| 417 return Builtins::builtin(Builtins::KeyedStoreIC_Initialize); | 423 return Builtins::builtin(Builtins::KeyedStoreIC_Initialize); |
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| 434 // The map is the new map that the inlined code should check against. | 440 // The map is the new map that the inlined code should check against. |
| 435 static bool PatchInlinedStore(Address address, Object* map); | 441 static bool PatchInlinedStore(Address address, Object* map); |
| 436 | 442 |
| 437 friend class IC; | 443 friend class IC; |
| 438 }; | 444 }; |
| 439 | 445 |
| 440 | 446 |
| 441 } } // namespace v8::internal | 447 } } // namespace v8::internal |
| 442 | 448 |
| 443 #endif // V8_IC_H_ | 449 #endif // V8_IC_H_ |
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