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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #include "src/arm/lithium-codegen-arm.h" | 7 #include "src/arm/lithium-codegen-arm.h" |
8 #include "src/arm/lithium-gap-resolver-arm.h" | 8 #include "src/arm/lithium-gap-resolver-arm.h" |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/code-factory.h" | 10 #include "src/code-factory.h" |
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589 } | 589 } |
590 } | 590 } |
591 | 591 |
592 | 592 |
593 void LCodeGen::WriteTranslation(LEnvironment* environment, | 593 void LCodeGen::WriteTranslation(LEnvironment* environment, |
594 Translation* translation) { | 594 Translation* translation) { |
595 if (environment == NULL) return; | 595 if (environment == NULL) return; |
596 | 596 |
597 // The translation includes one command per value in the environment. | 597 // The translation includes one command per value in the environment. |
598 int translation_size = environment->translation_size(); | 598 int translation_size = environment->translation_size(); |
599 // The output frame height does not include the parameters. | |
600 int height = translation_size - environment->parameter_count(); | |
601 | 599 |
602 WriteTranslation(environment->outer(), translation); | 600 WriteTranslation(environment->outer(), translation); |
603 | 601 WriteTranslationFrame(environment, translation); |
604 switch (environment->frame_type()) { | |
605 case JS_FUNCTION: { | |
606 int shared_id = DefineDeoptimizationLiteral( | |
607 environment->entry() ? environment->entry()->shared() | |
608 : info()->shared_info()); | |
609 translation->BeginJSFrame(environment->ast_id(), shared_id, height); | |
610 if (info()->closure().is_identical_to(environment->closure())) { | |
611 translation->StoreJSFrameFunction(); | |
612 } else { | |
613 int closure_id = DefineDeoptimizationLiteral(environment->closure()); | |
614 translation->StoreLiteral(closure_id); | |
615 } | |
616 break; | |
617 } | |
618 case JS_CONSTRUCT: { | |
619 int shared_id = DefineDeoptimizationLiteral( | |
620 environment->entry() ? environment->entry()->shared() | |
621 : info()->shared_info()); | |
622 translation->BeginConstructStubFrame(shared_id, translation_size); | |
623 if (info()->closure().is_identical_to(environment->closure())) { | |
624 translation->StoreJSFrameFunction(); | |
625 } else { | |
626 int closure_id = DefineDeoptimizationLiteral(environment->closure()); | |
627 translation->StoreLiteral(closure_id); | |
628 } | |
629 break; | |
630 } | |
631 case JS_GETTER: { | |
632 DCHECK(translation_size == 1); | |
633 DCHECK(height == 0); | |
634 int shared_id = DefineDeoptimizationLiteral( | |
635 environment->entry() ? environment->entry()->shared() | |
636 : info()->shared_info()); | |
637 translation->BeginGetterStubFrame(shared_id); | |
638 if (info()->closure().is_identical_to(environment->closure())) { | |
639 translation->StoreJSFrameFunction(); | |
640 } else { | |
641 int closure_id = DefineDeoptimizationLiteral(environment->closure()); | |
642 translation->StoreLiteral(closure_id); | |
643 } | |
644 break; | |
645 } | |
646 case JS_SETTER: { | |
647 DCHECK(translation_size == 2); | |
648 DCHECK(height == 0); | |
649 int shared_id = DefineDeoptimizationLiteral( | |
650 environment->entry() ? environment->entry()->shared() | |
651 : info()->shared_info()); | |
652 translation->BeginSetterStubFrame(shared_id); | |
653 if (info()->closure().is_identical_to(environment->closure())) { | |
654 translation->StoreJSFrameFunction(); | |
655 } else { | |
656 int closure_id = DefineDeoptimizationLiteral(environment->closure()); | |
657 translation->StoreLiteral(closure_id); | |
658 } | |
659 break; | |
660 } | |
661 case ARGUMENTS_ADAPTOR: { | |
662 int shared_id = DefineDeoptimizationLiteral( | |
663 environment->entry() ? environment->entry()->shared() | |
664 : info()->shared_info()); | |
665 translation->BeginArgumentsAdaptorFrame(shared_id, translation_size); | |
666 if (info()->closure().is_identical_to(environment->closure())) { | |
667 translation->StoreJSFrameFunction(); | |
668 } else { | |
669 int closure_id = DefineDeoptimizationLiteral(environment->closure()); | |
670 translation->StoreLiteral(closure_id); | |
671 } | |
672 break; | |
673 } | |
674 case STUB: | |
675 translation->BeginCompiledStubFrame(translation_size); | |
676 break; | |
677 } | |
678 | 602 |
679 int object_index = 0; | 603 int object_index = 0; |
680 int dematerialized_index = 0; | 604 int dematerialized_index = 0; |
681 for (int i = 0; i < translation_size; ++i) { | 605 for (int i = 0; i < translation_size; ++i) { |
682 LOperand* value = environment->values()->at(i); | 606 LOperand* value = environment->values()->at(i); |
683 AddToTranslation( | 607 AddToTranslation( |
684 environment, translation, value, environment->HasTaggedValueAt(i), | 608 environment, translation, value, environment->HasTaggedValueAt(i), |
685 environment->HasUint32ValueAt(i), &object_index, &dematerialized_index); | 609 environment->HasUint32ValueAt(i), &object_index, &dematerialized_index); |
686 } | 610 } |
687 } | 611 } |
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995 data->SetAstId(i, env->ast_id()); | 919 data->SetAstId(i, env->ast_id()); |
996 data->SetTranslationIndex(i, Smi::FromInt(env->translation_index())); | 920 data->SetTranslationIndex(i, Smi::FromInt(env->translation_index())); |
997 data->SetArgumentsStackHeight(i, | 921 data->SetArgumentsStackHeight(i, |
998 Smi::FromInt(env->arguments_stack_height())); | 922 Smi::FromInt(env->arguments_stack_height())); |
999 data->SetPc(i, Smi::FromInt(env->pc_offset())); | 923 data->SetPc(i, Smi::FromInt(env->pc_offset())); |
1000 } | 924 } |
1001 code->set_deoptimization_data(*data); | 925 code->set_deoptimization_data(*data); |
1002 } | 926 } |
1003 | 927 |
1004 | 928 |
1005 int LCodeGen::DefineDeoptimizationLiteral(Handle<Object> literal) { | |
1006 int result = deoptimization_literals_.length(); | |
1007 for (int i = 0; i < deoptimization_literals_.length(); ++i) { | |
1008 if (deoptimization_literals_[i].is_identical_to(literal)) return i; | |
1009 } | |
1010 deoptimization_literals_.Add(literal, zone()); | |
1011 return result; | |
1012 } | |
1013 | |
1014 | |
1015 void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { | 929 void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { |
1016 DCHECK_EQ(0, deoptimization_literals_.length()); | 930 DCHECK_EQ(0, deoptimization_literals_.length()); |
1017 for (auto function : chunk()->inlined_functions()) { | 931 for (auto function : chunk()->inlined_functions()) { |
1018 DefineDeoptimizationLiteral(function); | 932 DefineDeoptimizationLiteral(function); |
1019 } | 933 } |
1020 inlined_function_count_ = deoptimization_literals_.length(); | 934 inlined_function_count_ = deoptimization_literals_.length(); |
1021 } | 935 } |
1022 | 936 |
1023 | 937 |
1024 void LCodeGen::RecordSafepointWithLazyDeopt( | 938 void LCodeGen::RecordSafepointWithLazyDeopt( |
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6046 __ push(ToRegister(instr->function())); | 5960 __ push(ToRegister(instr->function())); |
6047 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 5961 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
6048 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5962 RecordSafepoint(Safepoint::kNoLazyDeopt); |
6049 } | 5963 } |
6050 | 5964 |
6051 | 5965 |
6052 #undef __ | 5966 #undef __ |
6053 | 5967 |
6054 } // namespace internal | 5968 } // namespace internal |
6055 } // namespace v8 | 5969 } // namespace v8 |
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