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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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 #if V8_TARGET_ARCH_ARM64 | 5 #if V8_TARGET_ARCH_ARM64 |
6 | 6 |
7 #include "src/arm64/frames-arm64.h" | 7 #include "src/arm64/frames-arm64.h" |
8 #include "src/bootstrapper.h" | 8 #include "src/bootstrapper.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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4490 | 4490 |
4491 | 4491 |
4492 void LoadICStub::Generate(MacroAssembler* masm) { GenerateImpl(masm, false); } | 4492 void LoadICStub::Generate(MacroAssembler* masm) { GenerateImpl(masm, false); } |
4493 | 4493 |
4494 | 4494 |
4495 void LoadICStub::GenerateForTrampoline(MacroAssembler* masm) { | 4495 void LoadICStub::GenerateForTrampoline(MacroAssembler* masm) { |
4496 GenerateImpl(masm, true); | 4496 GenerateImpl(masm, true); |
4497 } | 4497 } |
4498 | 4498 |
4499 | 4499 |
4500 static void HandleArrayCases(MacroAssembler* masm, Register receiver, | 4500 static void HandleArrayCases(MacroAssembler* masm, Register feedback, |
4501 Register key, Register vector, Register slot, | 4501 Register receiver_map, Register scratch1, |
4502 Register feedback, Register receiver_map, | 4502 Register scratch2, bool is_polymorphic, |
4503 Register scratch1, Register scratch2, | 4503 Label* miss) { |
4504 bool is_polymorphic, Label* miss) { | |
4505 // feedback initially contains the feedback array | 4504 // feedback initially contains the feedback array |
4506 Label next_loop, prepare_next; | 4505 Label next_loop, prepare_next; |
4507 Label load_smi_map, compare_map; | 4506 Label load_smi_map, compare_map; |
4508 Label start_polymorphic; | 4507 Label start_polymorphic; |
4509 | 4508 |
4510 Register cached_map = scratch1; | 4509 Register cached_map = scratch1; |
4511 | 4510 |
4512 __ Ldr(cached_map, | 4511 __ Ldr(cached_map, |
4513 FieldMemOperand(feedback, FixedArray::OffsetOfElementAt(0))); | 4512 FieldMemOperand(feedback, FixedArray::OffsetOfElementAt(0))); |
4514 __ Ldr(cached_map, FieldMemOperand(cached_map, WeakCell::kValueOffset)); | 4513 __ Ldr(cached_map, FieldMemOperand(cached_map, WeakCell::kValueOffset)); |
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4606 // at WeakCell::kValueOffset. | 4605 // at WeakCell::kValueOffset. |
4607 Label try_array, load_smi_map, compare_map; | 4606 Label try_array, load_smi_map, compare_map; |
4608 Label not_array, miss; | 4607 Label not_array, miss; |
4609 HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, slot, | 4608 HandleMonomorphicCase(masm, receiver, receiver_map, feedback, vector, slot, |
4610 scratch1, &compare_map, &load_smi_map, &try_array); | 4609 scratch1, &compare_map, &load_smi_map, &try_array); |
4611 | 4610 |
4612 // Is it a fixed array? | 4611 // Is it a fixed array? |
4613 __ Bind(&try_array); | 4612 __ Bind(&try_array); |
4614 __ Ldr(scratch1, FieldMemOperand(feedback, HeapObject::kMapOffset)); | 4613 __ Ldr(scratch1, FieldMemOperand(feedback, HeapObject::kMapOffset)); |
4615 __ JumpIfNotRoot(scratch1, Heap::kFixedArrayMapRootIndex, ¬_array); | 4614 __ JumpIfNotRoot(scratch1, Heap::kFixedArrayMapRootIndex, ¬_array); |
4616 HandleArrayCases(masm, receiver, name, vector, slot, feedback, receiver_map, | 4615 HandleArrayCases(masm, feedback, receiver_map, scratch1, x7, true, &miss); |
4617 scratch1, x7, true, &miss); | |
4618 | 4616 |
4619 __ Bind(¬_array); | 4617 __ Bind(¬_array); |
4620 __ JumpIfNotRoot(feedback, Heap::kmegamorphic_symbolRootIndex, &miss); | 4618 __ JumpIfNotRoot(feedback, Heap::kmegamorphic_symbolRootIndex, &miss); |
4621 Code::Flags code_flags = Code::RemoveTypeAndHolderFromFlags( | 4619 Code::Flags code_flags = Code::RemoveTypeAndHolderFromFlags( |
4622 Code::ComputeHandlerFlags(Code::LOAD_IC)); | 4620 Code::ComputeHandlerFlags(Code::LOAD_IC)); |
4623 masm->isolate()->stub_cache()->GenerateProbe(masm, Code::LOAD_IC, code_flags, | 4621 masm->isolate()->stub_cache()->GenerateProbe(masm, Code::LOAD_IC, code_flags, |
4624 receiver, name, feedback, | 4622 receiver, name, feedback, |
4625 receiver_map, scratch1, x7); | 4623 receiver_map, scratch1, x7); |
4626 | 4624 |
4627 __ Bind(&miss); | 4625 __ Bind(&miss); |
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4664 scratch1, &compare_map, &load_smi_map, &try_array); | 4662 scratch1, &compare_map, &load_smi_map, &try_array); |
4665 | 4663 |
4666 __ Bind(&try_array); | 4664 __ Bind(&try_array); |
4667 // Is it a fixed array? | 4665 // Is it a fixed array? |
4668 __ Ldr(scratch1, FieldMemOperand(feedback, HeapObject::kMapOffset)); | 4666 __ Ldr(scratch1, FieldMemOperand(feedback, HeapObject::kMapOffset)); |
4669 __ JumpIfNotRoot(scratch1, Heap::kFixedArrayMapRootIndex, ¬_array); | 4667 __ JumpIfNotRoot(scratch1, Heap::kFixedArrayMapRootIndex, ¬_array); |
4670 | 4668 |
4671 // We have a polymorphic element handler. | 4669 // We have a polymorphic element handler. |
4672 Label polymorphic, try_poly_name; | 4670 Label polymorphic, try_poly_name; |
4673 __ Bind(&polymorphic); | 4671 __ Bind(&polymorphic); |
4674 HandleArrayCases(masm, receiver, key, vector, slot, feedback, receiver_map, | 4672 HandleArrayCases(masm, feedback, receiver_map, scratch1, x7, true, &miss); |
4675 scratch1, x7, true, &miss); | |
4676 | 4673 |
4677 __ Bind(¬_array); | 4674 __ Bind(¬_array); |
4678 // Is it generic? | 4675 // Is it generic? |
4679 __ JumpIfNotRoot(feedback, Heap::kmegamorphic_symbolRootIndex, | 4676 __ JumpIfNotRoot(feedback, Heap::kmegamorphic_symbolRootIndex, |
4680 &try_poly_name); | 4677 &try_poly_name); |
4681 Handle<Code> megamorphic_stub = | 4678 Handle<Code> megamorphic_stub = |
4682 KeyedLoadIC::ChooseMegamorphicStub(masm->isolate(), GetExtraICState()); | 4679 KeyedLoadIC::ChooseMegamorphicStub(masm->isolate(), GetExtraICState()); |
4683 __ Jump(megamorphic_stub, RelocInfo::CODE_TARGET); | 4680 __ Jump(megamorphic_stub, RelocInfo::CODE_TARGET); |
4684 | 4681 |
4685 __ Bind(&try_poly_name); | 4682 __ Bind(&try_poly_name); |
4686 // We might have a name in feedback, and a fixed array in the next slot. | 4683 // We might have a name in feedback, and a fixed array in the next slot. |
4687 __ Cmp(key, feedback); | 4684 __ Cmp(key, feedback); |
4688 __ B(ne, &miss); | 4685 __ B(ne, &miss); |
4689 // If the name comparison succeeded, we know we have a fixed array with | 4686 // If the name comparison succeeded, we know we have a fixed array with |
4690 // at least one map/handler pair. | 4687 // at least one map/handler pair. |
4691 __ Add(feedback, vector, Operand::UntagSmiAndScale(slot, kPointerSizeLog2)); | 4688 __ Add(feedback, vector, Operand::UntagSmiAndScale(slot, kPointerSizeLog2)); |
4692 __ Ldr(feedback, | 4689 __ Ldr(feedback, |
4693 FieldMemOperand(feedback, FixedArray::kHeaderSize + kPointerSize)); | 4690 FieldMemOperand(feedback, FixedArray::kHeaderSize + kPointerSize)); |
4694 HandleArrayCases(masm, receiver, key, vector, slot, feedback, receiver_map, | 4691 HandleArrayCases(masm, feedback, receiver_map, scratch1, x7, false, &miss); |
4695 scratch1, x7, false, &miss); | |
4696 | 4692 |
4697 __ Bind(&miss); | 4693 __ Bind(&miss); |
4698 KeyedLoadIC::GenerateMiss(masm); | 4694 KeyedLoadIC::GenerateMiss(masm); |
4699 | 4695 |
4700 __ Bind(&load_smi_map); | 4696 __ Bind(&load_smi_map); |
4701 __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex); | 4697 __ LoadRoot(receiver_map, Heap::kHeapNumberMapRootIndex); |
4702 __ jmp(&compare_map); | 4698 __ jmp(&compare_map); |
4703 } | 4699 } |
4704 | 4700 |
4705 | 4701 |
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5943 MemOperand(fp, 6 * kPointerSize), NULL); | 5939 MemOperand(fp, 6 * kPointerSize), NULL); |
5944 } | 5940 } |
5945 | 5941 |
5946 | 5942 |
5947 #undef __ | 5943 #undef __ |
5948 | 5944 |
5949 } // namespace internal | 5945 } // namespace internal |
5950 } // namespace v8 | 5946 } // namespace v8 |
5951 | 5947 |
5952 #endif // V8_TARGET_ARCH_ARM64 | 5948 #endif // V8_TARGET_ARCH_ARM64 |
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