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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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2975 | 2975 |
2976 __ Jump(lr); | 2976 __ Jump(lr); |
2977 | 2977 |
2978 if (no_frame_start != -1) { | 2978 if (no_frame_start != -1) { |
2979 info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); | 2979 info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); |
2980 } | 2980 } |
2981 } | 2981 } |
2982 } | 2982 } |
2983 | 2983 |
2984 | 2984 |
2985 void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { | |
2986 Register result = ToRegister(instr->result()); | |
2987 __ mov(ip, Operand(Handle<Object>(instr->hydrogen()->cell().handle()))); | |
2988 __ ldr(result, FieldMemOperand(ip, Cell::kValueOffset)); | |
2989 if (instr->hydrogen()->RequiresHoleCheck()) { | |
2990 __ LoadRoot(ip, Heap::kTheHoleValueRootIndex); | |
2991 __ cmp(result, ip); | |
2992 DeoptimizeIf(eq, instr, Deoptimizer::kHole); | |
2993 } | |
2994 } | |
2995 | |
2996 | |
2997 template <class T> | 2985 template <class T> |
2998 void LCodeGen::EmitVectorLoadICRegisters(T* instr) { | 2986 void LCodeGen::EmitVectorLoadICRegisters(T* instr) { |
2999 DCHECK(FLAG_vector_ics); | 2987 DCHECK(FLAG_vector_ics); |
3000 Register vector_register = ToRegister(instr->temp_vector()); | 2988 Register vector_register = ToRegister(instr->temp_vector()); |
3001 Register slot_register = VectorLoadICDescriptor::SlotRegister(); | 2989 Register slot_register = VectorLoadICDescriptor::SlotRegister(); |
3002 DCHECK(vector_register.is(VectorLoadICDescriptor::VectorRegister())); | 2990 DCHECK(vector_register.is(VectorLoadICDescriptor::VectorRegister())); |
3003 DCHECK(slot_register.is(r0)); | 2991 DCHECK(slot_register.is(r0)); |
3004 | 2992 |
3005 AllowDeferredHandleDereference vector_structure_check; | 2993 AllowDeferredHandleDereference vector_structure_check; |
3006 Handle<TypeFeedbackVector> vector = instr->hydrogen()->feedback_vector(); | 2994 Handle<TypeFeedbackVector> vector = instr->hydrogen()->feedback_vector(); |
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3022 if (FLAG_vector_ics) { | 3010 if (FLAG_vector_ics) { |
3023 EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr); | 3011 EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr); |
3024 } | 3012 } |
3025 ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL; | 3013 ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL; |
3026 Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode, | 3014 Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode, |
3027 PREMONOMORPHIC).code(); | 3015 PREMONOMORPHIC).code(); |
3028 CallCode(ic, RelocInfo::CODE_TARGET, instr); | 3016 CallCode(ic, RelocInfo::CODE_TARGET, instr); |
3029 } | 3017 } |
3030 | 3018 |
3031 | 3019 |
3032 void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) { | |
3033 Register value = ToRegister(instr->value()); | |
3034 Register cell = scratch0(); | |
3035 | |
3036 // Load the cell. | |
3037 __ mov(cell, Operand(instr->hydrogen()->cell().handle())); | |
3038 | |
3039 // If the cell we are storing to contains the hole it could have | |
3040 // been deleted from the property dictionary. In that case, we need | |
3041 // to update the property details in the property dictionary to mark | |
3042 // it as no longer deleted. | |
3043 if (instr->hydrogen()->RequiresHoleCheck()) { | |
3044 // We use a temp to check the payload (CompareRoot might clobber ip). | |
3045 Register payload = ToRegister(instr->temp()); | |
3046 __ ldr(payload, FieldMemOperand(cell, Cell::kValueOffset)); | |
3047 __ CompareRoot(payload, Heap::kTheHoleValueRootIndex); | |
3048 DeoptimizeIf(eq, instr, Deoptimizer::kHole); | |
3049 } | |
3050 | |
3051 // Store the value. | |
3052 __ str(value, FieldMemOperand(cell, Cell::kValueOffset)); | |
3053 // Cells are always rescanned, so no write barrier here. | |
3054 } | |
3055 | |
3056 | |
3057 void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { | 3020 void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { |
3058 Register context = ToRegister(instr->context()); | 3021 Register context = ToRegister(instr->context()); |
3059 Register result = ToRegister(instr->result()); | 3022 Register result = ToRegister(instr->result()); |
3060 __ ldr(result, ContextOperand(context, instr->slot_index())); | 3023 __ ldr(result, ContextOperand(context, instr->slot_index())); |
3061 if (instr->hydrogen()->RequiresHoleCheck()) { | 3024 if (instr->hydrogen()->RequiresHoleCheck()) { |
3062 __ LoadRoot(ip, Heap::kTheHoleValueRootIndex); | 3025 __ LoadRoot(ip, Heap::kTheHoleValueRootIndex); |
3063 __ cmp(result, ip); | 3026 __ cmp(result, ip); |
3064 if (instr->hydrogen()->DeoptimizesOnHole()) { | 3027 if (instr->hydrogen()->DeoptimizesOnHole()) { |
3065 DeoptimizeIf(eq, instr, Deoptimizer::kHole); | 3028 DeoptimizeIf(eq, instr, Deoptimizer::kHole); |
3066 } else { | 3029 } else { |
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5965 __ Push(scope_info); | 5928 __ Push(scope_info); |
5966 __ push(ToRegister(instr->function())); | 5929 __ push(ToRegister(instr->function())); |
5967 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 5930 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
5968 RecordSafepoint(Safepoint::kNoLazyDeopt); | 5931 RecordSafepoint(Safepoint::kNoLazyDeopt); |
5969 } | 5932 } |
5970 | 5933 |
5971 | 5934 |
5972 #undef __ | 5935 #undef __ |
5973 | 5936 |
5974 } } // namespace v8::internal | 5937 } } // namespace v8::internal |
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