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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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4500 __ cmp(scratch, Operand(from_map)); | 4500 __ cmp(scratch, Operand(from_map)); |
4501 __ b(ne, ¬_applicable); | 4501 __ b(ne, ¬_applicable); |
4502 | 4502 |
4503 if (IsSimpleMapChangeTransition(from_kind, to_kind)) { | 4503 if (IsSimpleMapChangeTransition(from_kind, to_kind)) { |
4504 Register new_map_reg = ToRegister(instr->new_map_temp()); | 4504 Register new_map_reg = ToRegister(instr->new_map_temp()); |
4505 __ mov(new_map_reg, Operand(to_map)); | 4505 __ mov(new_map_reg, Operand(to_map)); |
4506 __ str(new_map_reg, FieldMemOperand(object_reg, HeapObject::kMapOffset)); | 4506 __ str(new_map_reg, FieldMemOperand(object_reg, HeapObject::kMapOffset)); |
4507 // Write barrier. | 4507 // Write barrier. |
4508 __ RecordWriteField(object_reg, HeapObject::kMapOffset, new_map_reg, | 4508 __ RecordWriteField(object_reg, HeapObject::kMapOffset, new_map_reg, |
4509 scratch, GetLinkRegisterState(), kDontSaveFPRegs); | 4509 scratch, GetLinkRegisterState(), kDontSaveFPRegs); |
4510 } else if (FLAG_compiled_transitions) { | 4510 } else { |
4511 PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); | 4511 PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
4512 __ Move(r0, object_reg); | 4512 __ Move(r0, object_reg); |
4513 __ Move(r1, to_map); | 4513 __ Move(r1, to_map); |
4514 TransitionElementsKindStub stub(from_kind, to_kind); | 4514 TransitionElementsKindStub stub(from_kind, to_kind); |
4515 __ CallStub(&stub); | 4515 __ CallStub(&stub); |
4516 RecordSafepointWithRegisters( | 4516 RecordSafepointWithRegisters( |
4517 instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); | 4517 instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
4518 } else if (IsFastSmiElementsKind(from_kind) && | |
4519 IsFastDoubleElementsKind(to_kind)) { | |
4520 Register fixed_object_reg = ToRegister(instr->temp()); | |
4521 ASSERT(fixed_object_reg.is(r2)); | |
4522 Register new_map_reg = ToRegister(instr->new_map_temp()); | |
4523 ASSERT(new_map_reg.is(r3)); | |
4524 __ mov(new_map_reg, Operand(to_map)); | |
4525 __ mov(fixed_object_reg, object_reg); | |
4526 CallCode(isolate()->builtins()->TransitionElementsSmiToDouble(), | |
4527 RelocInfo::CODE_TARGET, instr); | |
4528 } else if (IsFastDoubleElementsKind(from_kind) && | |
4529 IsFastObjectElementsKind(to_kind)) { | |
4530 Register fixed_object_reg = ToRegister(instr->temp()); | |
4531 ASSERT(fixed_object_reg.is(r2)); | |
4532 Register new_map_reg = ToRegister(instr->new_map_temp()); | |
4533 ASSERT(new_map_reg.is(r3)); | |
4534 __ mov(new_map_reg, Operand(to_map)); | |
4535 __ mov(fixed_object_reg, object_reg); | |
4536 CallCode(isolate()->builtins()->TransitionElementsDoubleToObject(), | |
4537 RelocInfo::CODE_TARGET, instr); | |
4538 } else { | |
4539 UNREACHABLE(); | |
4540 } | 4518 } |
4541 __ bind(¬_applicable); | 4519 __ bind(¬_applicable); |
4542 } | 4520 } |
4543 | 4521 |
4544 | 4522 |
4545 void LCodeGen::DoTrapAllocationMemento(LTrapAllocationMemento* instr) { | 4523 void LCodeGen::DoTrapAllocationMemento(LTrapAllocationMemento* instr) { |
4546 Register object = ToRegister(instr->object()); | 4524 Register object = ToRegister(instr->object()); |
4547 Register temp = ToRegister(instr->temp()); | 4525 Register temp = ToRegister(instr->temp()); |
4548 __ TestJSArrayForAllocationMemento(object, temp); | 4526 __ TestJSArrayForAllocationMemento(object, temp); |
4549 DeoptimizeIf(eq, instr->environment()); | 4527 DeoptimizeIf(eq, instr->environment()); |
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5841 __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index)); | 5819 __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index)); |
5842 __ ldr(result, FieldMemOperand(scratch, | 5820 __ ldr(result, FieldMemOperand(scratch, |
5843 FixedArray::kHeaderSize - kPointerSize)); | 5821 FixedArray::kHeaderSize - kPointerSize)); |
5844 __ bind(&done); | 5822 __ bind(&done); |
5845 } | 5823 } |
5846 | 5824 |
5847 | 5825 |
5848 #undef __ | 5826 #undef __ |
5849 | 5827 |
5850 } } // namespace v8::internal | 5828 } } // namespace v8::internal |
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