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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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396 case Code::TO_BOOLEAN_IC: | 396 case Code::TO_BOOLEAN_IC: |
397 // Clearing these is tricky and does not | 397 // Clearing these is tricky and does not |
398 // make any performance difference. | 398 // make any performance difference. |
399 return; | 399 return; |
400 default: UNREACHABLE(); | 400 default: UNREACHABLE(); |
401 } | 401 } |
402 } | 402 } |
403 | 403 |
404 | 404 |
405 void CallICBase::Clear(Address address, Code* target) { | 405 void CallICBase::Clear(Address address, Code* target) { |
406 if (target->ic_state() == UNINITIALIZED) return; | 406 if (IsCleared(target)) return; |
407 bool contextual = CallICBase::Contextual::decode(target->extra_ic_state()); | 407 bool contextual = CallICBase::Contextual::decode(target->extra_ic_state()); |
408 Code* code = | 408 Code* code = |
409 target->GetIsolate()->stub_cache()->FindCallInitialize( | 409 target->GetIsolate()->stub_cache()->FindCallInitialize( |
410 target->arguments_count(), | 410 target->arguments_count(), |
411 contextual ? RelocInfo::CODE_TARGET_CONTEXT : RelocInfo::CODE_TARGET, | 411 contextual ? RelocInfo::CODE_TARGET_CONTEXT : RelocInfo::CODE_TARGET, |
412 target->kind()); | 412 target->kind()); |
413 SetTargetAtAddress(address, code); | 413 SetTargetAtAddress(address, code); |
414 } | 414 } |
415 | 415 |
416 | 416 |
417 void KeyedLoadIC::Clear(Isolate* isolate, Address address, Code* target) { | 417 void KeyedLoadIC::Clear(Isolate* isolate, Address address, Code* target) { |
418 if (target->ic_state() == UNINITIALIZED) return; | 418 if (IsCleared(target)) return; |
419 // Make sure to also clear the map used in inline fast cases. If we | 419 // Make sure to also clear the map used in inline fast cases. If we |
420 // do not clear these maps, cached code can keep objects alive | 420 // do not clear these maps, cached code can keep objects alive |
421 // through the embedded maps. | 421 // through the embedded maps. |
422 SetTargetAtAddress(address, *initialize_stub(isolate)); | 422 SetTargetAtAddress(address, *pre_monomorphic_stub(isolate)); |
423 } | 423 } |
424 | 424 |
425 | 425 |
426 void LoadIC::Clear(Isolate* isolate, Address address, Code* target) { | 426 void LoadIC::Clear(Isolate* isolate, Address address, Code* target) { |
427 if (target->ic_state() == UNINITIALIZED) return; | 427 if (IsCleared(target)) return; |
428 SetTargetAtAddress(address, *initialize_stub(isolate)); | 428 SetTargetAtAddress(address, *pre_monomorphic_stub(isolate)); |
429 } | 429 } |
430 | 430 |
431 | 431 |
432 void StoreIC::Clear(Isolate* isolate, Address address, Code* target) { | 432 void StoreIC::Clear(Isolate* isolate, Address address, Code* target) { |
433 if (target->ic_state() == UNINITIALIZED) return; | 433 if (IsCleared(target)) return; |
434 SetTargetAtAddress(address, | 434 SetTargetAtAddress(address, |
435 (Code::GetStrictMode(target->extra_ic_state()) == kStrictMode) | 435 (Code::GetStrictMode(target->extra_ic_state()) == kStrictMode) |
436 ? *initialize_stub_strict(isolate) | 436 ? *pre_monomorphic_stub_strict(isolate) |
437 : *initialize_stub(isolate)); | 437 : *pre_monomorphic_stub(isolate)); |
438 } | 438 } |
439 | 439 |
440 | 440 |
441 void KeyedStoreIC::Clear(Isolate* isolate, Address address, Code* target) { | 441 void KeyedStoreIC::Clear(Isolate* isolate, Address address, Code* target) { |
442 if (target->ic_state() == UNINITIALIZED) return; | 442 if (IsCleared(target)) return; |
443 SetTargetAtAddress(address, | 443 SetTargetAtAddress(address, |
444 (Code::GetStrictMode(target->extra_ic_state()) == kStrictMode) | 444 (Code::GetStrictMode(target->extra_ic_state()) == kStrictMode) |
445 ? *initialize_stub_strict(isolate) | 445 ? *pre_monomorphic_stub_strict(isolate) |
446 : *initialize_stub(isolate)); | 446 : *pre_monomorphic_stub(isolate)); |
447 } | 447 } |
448 | 448 |
449 | 449 |
450 void CompareIC::Clear(Isolate* isolate, Address address, Code* target) { | 450 void CompareIC::Clear(Isolate* isolate, Address address, Code* target) { |
451 ASSERT(target->major_key() == CodeStub::CompareIC); | 451 ASSERT(target->major_key() == CodeStub::CompareIC); |
452 CompareIC::State handler_state; | 452 CompareIC::State handler_state; |
453 Token::Value op; | 453 Token::Value op; |
454 ICCompareStub::DecodeMinorKey(target->stub_info(), NULL, NULL, | 454 ICCompareStub::DecodeMinorKey(target->stub_info(), NULL, NULL, |
455 &handler_state, &op); | 455 &handler_state, &op); |
456 // Only clear CompareICs that can retain objects. | 456 // Only clear CompareICs that can retain objects. |
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3162 #undef ADDR | 3162 #undef ADDR |
3163 }; | 3163 }; |
3164 | 3164 |
3165 | 3165 |
3166 Address IC::AddressFromUtilityId(IC::UtilityId id) { | 3166 Address IC::AddressFromUtilityId(IC::UtilityId id) { |
3167 return IC_utilities[id]; | 3167 return IC_utilities[id]; |
3168 } | 3168 } |
3169 | 3169 |
3170 | 3170 |
3171 } } // namespace v8::internal | 3171 } } // namespace v8::internal |
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