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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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4448 __ lw(scratch, FieldMemOperand(object_reg, HeapObject::kMapOffset)); | 4448 __ lw(scratch, FieldMemOperand(object_reg, HeapObject::kMapOffset)); |
4449 __ Branch(¬_applicable, ne, scratch, Operand(from_map)); | 4449 __ Branch(¬_applicable, ne, scratch, Operand(from_map)); |
4450 | 4450 |
4451 if (IsSimpleMapChangeTransition(from_kind, to_kind)) { | 4451 if (IsSimpleMapChangeTransition(from_kind, to_kind)) { |
4452 Register new_map_reg = ToRegister(instr->new_map_temp()); | 4452 Register new_map_reg = ToRegister(instr->new_map_temp()); |
4453 __ li(new_map_reg, Operand(to_map)); | 4453 __ li(new_map_reg, Operand(to_map)); |
4454 __ sw(new_map_reg, FieldMemOperand(object_reg, HeapObject::kMapOffset)); | 4454 __ sw(new_map_reg, FieldMemOperand(object_reg, HeapObject::kMapOffset)); |
4455 // Write barrier. | 4455 // Write barrier. |
4456 __ RecordWriteField(object_reg, HeapObject::kMapOffset, new_map_reg, | 4456 __ RecordWriteField(object_reg, HeapObject::kMapOffset, new_map_reg, |
4457 scratch, GetRAState(), kDontSaveFPRegs); | 4457 scratch, GetRAState(), kDontSaveFPRegs); |
4458 } else if (FLAG_compiled_transitions) { | 4458 } else { |
4459 PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); | 4459 PushSafepointRegistersScope scope(this, Safepoint::kWithRegisters); |
4460 __ mov(a0, object_reg); | 4460 __ mov(a0, object_reg); |
4461 __ li(a1, Operand(to_map)); | 4461 __ li(a1, Operand(to_map)); |
4462 TransitionElementsKindStub stub(from_kind, to_kind); | 4462 TransitionElementsKindStub stub(from_kind, to_kind); |
4463 __ CallStub(&stub); | 4463 __ CallStub(&stub); |
4464 RecordSafepointWithRegisters( | 4464 RecordSafepointWithRegisters( |
4465 instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); | 4465 instr->pointer_map(), 0, Safepoint::kNoLazyDeopt); |
4466 } else if (IsFastSmiElementsKind(from_kind) && | |
4467 IsFastDoubleElementsKind(to_kind)) { | |
4468 Register fixed_object_reg = ToRegister(instr->temp()); | |
4469 ASSERT(fixed_object_reg.is(a2)); | |
4470 Register new_map_reg = ToRegister(instr->new_map_temp()); | |
4471 ASSERT(new_map_reg.is(a3)); | |
4472 __ li(new_map_reg, Operand(to_map)); | |
4473 __ mov(fixed_object_reg, object_reg); | |
4474 CallCode(isolate()->builtins()->TransitionElementsSmiToDouble(), | |
4475 RelocInfo::CODE_TARGET, instr); | |
4476 } else if (IsFastDoubleElementsKind(from_kind) && | |
4477 IsFastObjectElementsKind(to_kind)) { | |
4478 Register fixed_object_reg = ToRegister(instr->temp()); | |
4479 ASSERT(fixed_object_reg.is(a2)); | |
4480 Register new_map_reg = ToRegister(instr->new_map_temp()); | |
4481 ASSERT(new_map_reg.is(a3)); | |
4482 __ li(new_map_reg, Operand(to_map)); | |
4483 __ mov(fixed_object_reg, object_reg); | |
4484 CallCode(isolate()->builtins()->TransitionElementsDoubleToObject(), | |
4485 RelocInfo::CODE_TARGET, instr); | |
4486 } else { | |
4487 UNREACHABLE(); | |
4488 } | 4466 } |
4489 __ bind(¬_applicable); | 4467 __ bind(¬_applicable); |
4490 } | 4468 } |
4491 | 4469 |
4492 | 4470 |
4493 void LCodeGen::DoTrapAllocationMemento(LTrapAllocationMemento* instr) { | 4471 void LCodeGen::DoTrapAllocationMemento(LTrapAllocationMemento* instr) { |
4494 Register object = ToRegister(instr->object()); | 4472 Register object = ToRegister(instr->object()); |
4495 Register temp = ToRegister(instr->temp()); | 4473 Register temp = ToRegister(instr->temp()); |
4496 Label fail; | 4474 Label fail; |
4497 __ TestJSArrayForAllocationMemento(object, temp, ne, &fail); | 4475 __ TestJSArrayForAllocationMemento(object, temp, ne, &fail); |
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5858 __ Subu(scratch, result, scratch); | 5836 __ Subu(scratch, result, scratch); |
5859 __ lw(result, FieldMemOperand(scratch, | 5837 __ lw(result, FieldMemOperand(scratch, |
5860 FixedArray::kHeaderSize - kPointerSize)); | 5838 FixedArray::kHeaderSize - kPointerSize)); |
5861 __ bind(&done); | 5839 __ bind(&done); |
5862 } | 5840 } |
5863 | 5841 |
5864 | 5842 |
5865 #undef __ | 5843 #undef __ |
5866 | 5844 |
5867 } } // namespace v8::internal | 5845 } } // namespace v8::internal |
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