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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(¬_array); | 4632 __ bind(¬_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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