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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_X87 | 7 #if V8_TARGET_ARCH_X87 |
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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3132 __ bind(&no_padding); | 3132 __ bind(&no_padding); |
3133 } | 3133 } |
3134 | 3134 |
3135 EmitReturn(instr, false); | 3135 EmitReturn(instr, false); |
3136 if (no_frame_start != -1) { | 3136 if (no_frame_start != -1) { |
3137 info()->AddNoFrameRange(no_frame_start, masm_->pc_offset()); | 3137 info()->AddNoFrameRange(no_frame_start, masm_->pc_offset()); |
3138 } | 3138 } |
3139 } | 3139 } |
3140 | 3140 |
3141 | 3141 |
3142 void LCodeGen::DoLoadGlobalCell(LLoadGlobalCell* instr) { | |
3143 Register result = ToRegister(instr->result()); | |
3144 __ mov(result, Operand::ForCell(instr->hydrogen()->cell().handle())); | |
3145 if (instr->hydrogen()->RequiresHoleCheck()) { | |
3146 __ cmp(result, factory()->the_hole_value()); | |
3147 DeoptimizeIf(equal, instr, Deoptimizer::kHole); | |
3148 } | |
3149 } | |
3150 | |
3151 | |
3152 template <class T> | 3142 template <class T> |
3153 void LCodeGen::EmitVectorLoadICRegisters(T* instr) { | 3143 void LCodeGen::EmitVectorLoadICRegisters(T* instr) { |
3154 DCHECK(FLAG_vector_ics); | 3144 DCHECK(FLAG_vector_ics); |
3155 Register vector_register = ToRegister(instr->temp_vector()); | 3145 Register vector_register = ToRegister(instr->temp_vector()); |
3156 Register slot_register = VectorLoadICDescriptor::SlotRegister(); | 3146 Register slot_register = VectorLoadICDescriptor::SlotRegister(); |
3157 DCHECK(vector_register.is(VectorLoadICDescriptor::VectorRegister())); | 3147 DCHECK(vector_register.is(VectorLoadICDescriptor::VectorRegister())); |
3158 DCHECK(slot_register.is(eax)); | 3148 DCHECK(slot_register.is(eax)); |
3159 | 3149 |
3160 AllowDeferredHandleDereference vector_structure_check; | 3150 AllowDeferredHandleDereference vector_structure_check; |
3161 Handle<TypeFeedbackVector> vector = instr->hydrogen()->feedback_vector(); | 3151 Handle<TypeFeedbackVector> vector = instr->hydrogen()->feedback_vector(); |
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3177 if (FLAG_vector_ics) { | 3167 if (FLAG_vector_ics) { |
3178 EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr); | 3168 EmitVectorLoadICRegisters<LLoadGlobalGeneric>(instr); |
3179 } | 3169 } |
3180 ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL; | 3170 ContextualMode mode = instr->for_typeof() ? NOT_CONTEXTUAL : CONTEXTUAL; |
3181 Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode, | 3171 Handle<Code> ic = CodeFactory::LoadICInOptimizedCode(isolate(), mode, |
3182 PREMONOMORPHIC).code(); | 3172 PREMONOMORPHIC).code(); |
3183 CallCode(ic, RelocInfo::CODE_TARGET, instr); | 3173 CallCode(ic, RelocInfo::CODE_TARGET, instr); |
3184 } | 3174 } |
3185 | 3175 |
3186 | 3176 |
3187 void LCodeGen::DoStoreGlobalCell(LStoreGlobalCell* instr) { | |
3188 Register value = ToRegister(instr->value()); | |
3189 Handle<PropertyCell> cell_handle = instr->hydrogen()->cell().handle(); | |
3190 | |
3191 // If the cell we are storing to contains the hole it could have | |
3192 // been deleted from the property dictionary. In that case, we need | |
3193 // to update the property details in the property dictionary to mark | |
3194 // it as no longer deleted. We deoptimize in that case. | |
3195 if (instr->hydrogen()->RequiresHoleCheck()) { | |
3196 __ cmp(Operand::ForCell(cell_handle), factory()->the_hole_value()); | |
3197 DeoptimizeIf(equal, instr, Deoptimizer::kHole); | |
3198 } | |
3199 | |
3200 // Store the value. | |
3201 __ mov(Operand::ForCell(cell_handle), value); | |
3202 // Cells are always rescanned, so no write barrier here. | |
3203 } | |
3204 | |
3205 | |
3206 void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { | 3177 void LCodeGen::DoLoadContextSlot(LLoadContextSlot* instr) { |
3207 Register context = ToRegister(instr->context()); | 3178 Register context = ToRegister(instr->context()); |
3208 Register result = ToRegister(instr->result()); | 3179 Register result = ToRegister(instr->result()); |
3209 __ mov(result, ContextOperand(context, instr->slot_index())); | 3180 __ mov(result, ContextOperand(context, instr->slot_index())); |
3210 | 3181 |
3211 if (instr->hydrogen()->RequiresHoleCheck()) { | 3182 if (instr->hydrogen()->RequiresHoleCheck()) { |
3212 __ cmp(result, factory()->the_hole_value()); | 3183 __ cmp(result, factory()->the_hole_value()); |
3213 if (instr->hydrogen()->DeoptimizesOnHole()) { | 3184 if (instr->hydrogen()->DeoptimizesOnHole()) { |
3214 DeoptimizeIf(equal, instr, Deoptimizer::kHole); | 3185 DeoptimizeIf(equal, instr, Deoptimizer::kHole); |
3215 } else { | 3186 } else { |
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6413 CallRuntime(Runtime::kPushBlockContext, 2, instr); | 6384 CallRuntime(Runtime::kPushBlockContext, 2, instr); |
6414 RecordSafepoint(Safepoint::kNoLazyDeopt); | 6385 RecordSafepoint(Safepoint::kNoLazyDeopt); |
6415 } | 6386 } |
6416 | 6387 |
6417 | 6388 |
6418 #undef __ | 6389 #undef __ |
6419 | 6390 |
6420 } } // namespace v8::internal | 6391 } } // namespace v8::internal |
6421 | 6392 |
6422 #endif // V8_TARGET_ARCH_X87 | 6393 #endif // V8_TARGET_ARCH_X87 |
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