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Issue 1189153002: Revert of [strong] Implement strong mode restrictions on property access (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 6 months ago
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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/bootstrapper.h" 10 #include "src/bootstrapper.h"
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4423 4423
4424 void LoadICTrampolineStub::Generate(MacroAssembler* masm) { 4424 void LoadICTrampolineStub::Generate(MacroAssembler* masm) {
4425 EmitLoadTypeFeedbackVector(masm, LoadWithVectorDescriptor::VectorRegister()); 4425 EmitLoadTypeFeedbackVector(masm, LoadWithVectorDescriptor::VectorRegister());
4426 LoadICStub stub(isolate(), state()); 4426 LoadICStub stub(isolate(), state());
4427 stub.GenerateForTrampoline(masm); 4427 stub.GenerateForTrampoline(masm);
4428 } 4428 }
4429 4429
4430 4430
4431 void KeyedLoadICTrampolineStub::Generate(MacroAssembler* masm) { 4431 void KeyedLoadICTrampolineStub::Generate(MacroAssembler* masm) {
4432 EmitLoadTypeFeedbackVector(masm, LoadWithVectorDescriptor::VectorRegister()); 4432 EmitLoadTypeFeedbackVector(masm, LoadWithVectorDescriptor::VectorRegister());
4433 KeyedLoadICStub stub(isolate(), state()); 4433 KeyedLoadICStub stub(isolate());
4434 stub.GenerateForTrampoline(masm); 4434 stub.GenerateForTrampoline(masm);
4435 } 4435 }
4436 4436
4437 4437
4438 static void HandleArrayCases(MacroAssembler* masm, Register receiver, 4438 static void HandleArrayCases(MacroAssembler* masm, Register receiver,
4439 Register key, Register vector, Register slot, 4439 Register key, Register vector, Register slot,
4440 Register feedback, bool is_polymorphic, 4440 Register feedback, bool is_polymorphic,
4441 Label* miss) { 4441 Label* miss) {
4442 // feedback initially contains the feedback array 4442 // feedback initially contains the feedback array
4443 Label next, next_loop, prepare_next; 4443 Label next, next_loop, prepare_next;
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4627 // We have a polymorphic element handler. 4627 // We have a polymorphic element handler.
4628 Label polymorphic, try_poly_name; 4628 Label polymorphic, try_poly_name;
4629 __ bind(&polymorphic); 4629 __ bind(&polymorphic);
4630 HandleArrayCases(masm, receiver, key, vector, slot, feedback, true, &miss); 4630 HandleArrayCases(masm, receiver, key, vector, slot, feedback, true, &miss);
4631 4631
4632 __ bind(&not_array); 4632 __ bind(&not_array);
4633 // Is it generic? 4633 // Is it generic?
4634 __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex); 4634 __ CompareRoot(feedback, Heap::kmegamorphic_symbolRootIndex);
4635 __ j(not_equal, &try_poly_name); 4635 __ j(not_equal, &try_poly_name);
4636 Handle<Code> megamorphic_stub = 4636 Handle<Code> megamorphic_stub =
4637 KeyedLoadIC::ChooseMegamorphicStub(masm->isolate(), GetExtraICState()); 4637 KeyedLoadIC::ChooseMegamorphicStub(masm->isolate());
4638 __ jmp(megamorphic_stub, RelocInfo::CODE_TARGET); 4638 __ jmp(megamorphic_stub, RelocInfo::CODE_TARGET);
4639 4639
4640 __ bind(&try_poly_name); 4640 __ bind(&try_poly_name);
4641 // We might have a name in feedback, and a fixed array in the next slot. 4641 // We might have a name in feedback, and a fixed array in the next slot.
4642 __ cmp(key, feedback); 4642 __ cmp(key, feedback);
4643 __ j(not_equal, &miss); 4643 __ j(not_equal, &miss);
4644 // If the name comparison succeeded, we know we have a fixed array with 4644 // If the name comparison succeeded, we know we have a fixed array with
4645 // at least one map/handler pair. 4645 // at least one map/handler pair.
4646 __ mov(feedback, FieldOperand(vector, slot, times_half_pointer_size, 4646 __ mov(feedback, FieldOperand(vector, slot, times_half_pointer_size,
4647 FixedArray::kHeaderSize + kPointerSize)); 4647 FixedArray::kHeaderSize + kPointerSize));
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5478 Operand(ebp, 7 * kPointerSize), NULL); 5478 Operand(ebp, 7 * kPointerSize), NULL);
5479 } 5479 }
5480 5480
5481 5481
5482 #undef __ 5482 #undef __
5483 5483
5484 } // namespace internal 5484 } // namespace internal
5485 } // namespace v8 5485 } // namespace v8
5486 5486
5487 #endif // V8_TARGET_ARCH_IA32 5487 #endif // V8_TARGET_ARCH_IA32
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