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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 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
8 | 8 |
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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2856 __ bind(&no_padding); | 2856 __ bind(&no_padding); |
2857 } | 2857 } |
2858 | 2858 |
2859 EmitReturn(instr, false); | 2859 EmitReturn(instr, false); |
2860 if (no_frame_start != -1) { | 2860 if (no_frame_start != -1) { |
2861 info()->AddNoFrameRange(no_frame_start, masm_->pc_offset()); | 2861 info()->AddNoFrameRange(no_frame_start, masm_->pc_offset()); |
2862 } | 2862 } |
2863 } | 2863 } |
2864 | 2864 |
2865 | 2865 |
2866 void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { | |
2867 Register result = ToRegister(instr->result()); | |
2868 __ mov(result, Operand::ForCell(instr->hydrogen()->cell().handle())); | |
2869 if (instr->hydrogen()->RequiresHoleCheck()) { | |
2870 __ cmp(result, factory()->the_hole_value()); | |
2871 DeoptimizeIf(equal, instr, Deoptimizer::kHole); | |
2872 } | |
2873 } | |
2874 | |
2875 | |
2876 template <class T> | 2866 template <class T> |
2877 void LCodeGen::EmitVectorLoadICRegisters(T* instr) { | 2867 void LCodeGen::EmitVectorLoadICRegisters(T* instr) { |
2878 DCHECK(FLAG_vector_ics); | 2868 DCHECK(FLAG_vector_ics); |
2879 Register vector_register = ToRegister(instr->temp_vector()); | 2869 Register vector_register = ToRegister(instr->temp_vector()); |
2880 Register slot_register = VectorLoadICDescriptor::SlotRegister(); | 2870 Register slot_register = VectorLoadICDescriptor::SlotRegister(); |
2881 DCHECK(vector_register.is(VectorLoadICDescriptor::VectorRegister())); | 2871 DCHECK(vector_register.is(VectorLoadICDescriptor::VectorRegister())); |
2882 DCHECK(slot_register.is(eax)); | 2872 DCHECK(slot_register.is(eax)); |
2883 | 2873 |
2884 AllowDeferredHandleDereference vector_structure_check; | 2874 AllowDeferredHandleDereference vector_structure_check; |
2885 Handle<TypeFeedbackVector> vector = instr->hydrogen()->feedback_vector(); | 2875 Handle<TypeFeedbackVector> vector = instr->hydrogen()->feedback_vector(); |
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2901 if (FLAG_vector_ics) { | 2891 if (FLAG_vector_ics) { |
2902 EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr); | 2892 EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr); |
2903 } | 2893 } |
2904 ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL; | 2894 ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL; |
2905 Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode, | 2895 Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode, |
2906 PREMONOMORPHIC).code(); | 2896 PREMONOMORPHIC).code(); |
2907 CallCode(ic, RelocInfo::CODE_TARGET, instr); | 2897 CallCode(ic, RelocInfo::CODE_TARGET, instr); |
2908 } | 2898 } |
2909 | 2899 |
2910 | 2900 |
2911 void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) { | |
2912 Register value = ToRegister(instr->value()); | |
2913 Handle<PropertyCell> cell_handle = instr->hydrogen()->cell().handle(); | |
2914 | |
2915 // If the cell we are storing to contains the hole it could have | |
2916 // been deleted from the property dictionary. In that case, we need | |
2917 // to update the property details in the property dictionary to mark | |
2918 // it as no longer deleted. We deoptimize in that case. | |
2919 if (instr->hydrogen()->RequiresHoleCheck()) { | |
2920 __ cmp(Operand::ForCell(cell_handle), factory()->the_hole_value()); | |
2921 DeoptimizeIf(equal, instr, Deoptimizer::kHole); | |
2922 } | |
2923 | |
2924 // Store the value. | |
2925 __ mov(Operand::ForCell(cell_handle), value); | |
2926 // Cells are always rescanned, so no write barrier here. | |
2927 } | |
2928 | |
2929 | |
2930 void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { | 2901 void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { |
2931 Register context = ToRegister(instr->context()); | 2902 Register context = ToRegister(instr->context()); |
2932 Register result = ToRegister(instr->result()); | 2903 Register result = ToRegister(instr->result()); |
2933 __ mov(result, ContextOperand(context, instr->slot_index())); | 2904 __ mov(result, ContextOperand(context, instr->slot_index())); |
2934 | 2905 |
2935 if (instr->hydrogen()->RequiresHoleCheck()) { | 2906 if (instr->hydrogen()->RequiresHoleCheck()) { |
2936 __ cmp(result, factory()->the_hole_value()); | 2907 __ cmp(result, factory()->the_hole_value()); |
2937 if (instr->hydrogen()->DeoptimizesOnHole()) { | 2908 if (instr->hydrogen()->DeoptimizesOnHole()) { |
2938 DeoptimizeIf(equal, instr, Deoptimizer::kHole); | 2909 DeoptimizeIf(equal, instr, Deoptimizer::kHole); |
2939 } else { | 2910 } else { |
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5796 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 5767 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
5797 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5768 RecordSafepoint(Safepoint::kNoLazyDeopt); |
5798 } | 5769 } |
5799 | 5770 |
5800 | 5771 |
5801 #undef __ | 5772 #undef __ |
5802 | 5773 |
5803 } } // namespace v8::internal | 5774 } } // namespace v8::internal |
5804 | 5775 |
5805 #endif // V8_TARGET_ARCH_IA32 | 5776 #endif // V8_TARGET_ARCH_IA32 |
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