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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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5311 | 5311 |
5312 __ bind(&done); | 5312 __ bind(&done); |
5313 } | 5313 } |
5314 | 5314 |
5315 | 5315 |
5316 void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) { | 5316 void LCodeGen::DoCheckPrototypeMaps(LCheckPrototypeMaps* instr) { |
5317 ASSERT(instr->temp()->Equals(instr->result())); | 5317 ASSERT(instr->temp()->Equals(instr->result())); |
5318 Register prototype_reg = ToRegister(instr->temp()); | 5318 Register prototype_reg = ToRegister(instr->temp()); |
5319 Register map_reg = ToRegister(instr->temp2()); | 5319 Register map_reg = ToRegister(instr->temp2()); |
5320 | 5320 |
5321 Handle<JSObject> holder = instr->holder(); | 5321 ZoneList<Handle<JSObject> >* prototypes = instr->prototypes(); |
5322 Handle<JSObject> current_prototype = instr->prototype(); | 5322 ZoneList<Handle<Map> >* maps = instr->maps(); |
5323 | 5323 |
5324 // Load prototype object. | 5324 ASSERT(prototypes->length() == maps->length()); |
5325 __ LoadHeapObject(prototype_reg, current_prototype); | |
5326 | 5325 |
5327 // Check prototype maps up to the holder. | 5326 for (int i = 0; i < prototypes->length(); i++) { |
5328 while (!current_prototype.is_identical_to(holder)) { | 5327 __ LoadHeapObject(prototype_reg, prototypes->at(i)); |
5329 __ ldr(map_reg, FieldMemOperand(prototype_reg, HeapObject::kMapOffset)); | 5328 __ ldr(map_reg, FieldMemOperand(prototype_reg, HeapObject::kMapOffset)); |
5330 DoCheckMapCommon(map_reg, | 5329 DoCheckMapCommon(map_reg, |
5331 Handle<Map>(current_prototype->map()), | 5330 maps->at(i), |
5332 ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment()); | 5331 ALLOW_ELEMENT_TRANSITION_MAPS, |
5333 current_prototype = | 5332 instr->environment()); |
5334 Handle<JSObject>(JSObject::cast(current_prototype->GetPrototype())); | |
5335 // Load next prototype object. | |
5336 __ LoadHeapObject(prototype_reg, current_prototype); | |
5337 } | 5333 } |
5338 | |
5339 // Check the holder map. | |
5340 __ ldr(map_reg, FieldMemOperand(prototype_reg, HeapObject::kMapOffset)); | |
5341 DoCheckMapCommon(map_reg, | |
5342 Handle<Map>(current_prototype->map()), | |
5343 ALLOW_ELEMENT_TRANSITION_MAPS, instr->environment()); | |
5344 } | 5334 } |
5345 | 5335 |
5346 | 5336 |
5347 void LCodeGen::DoAllocateObject(LAllocateObject* instr) { | 5337 void LCodeGen::DoAllocateObject(LAllocateObject* instr) { |
5348 class DeferredAllocateObject: public LDeferredCode { | 5338 class DeferredAllocateObject: public LDeferredCode { |
5349 public: | 5339 public: |
5350 DeferredAllocateObject(LCodeGen* codegen, LAllocateObject* instr) | 5340 DeferredAllocateObject(LCodeGen* codegen, LAllocateObject* instr) |
5351 : LDeferredCode(codegen), instr_(instr) { } | 5341 : LDeferredCode(codegen), instr_(instr) { } |
5352 virtual void Generate() { codegen()->DoDeferredAllocateObject(instr_); } | 5342 virtual void Generate() { codegen()->DoDeferredAllocateObject(instr_); } |
5353 virtual LInstruction* instr() { return instr_; } | 5343 virtual LInstruction* instr() { return instr_; } |
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6111 __ sub(scratch, result, Operand(index, LSL, kPointerSizeLog2 - kSmiTagSize)); | 6101 __ sub(scratch, result, Operand(index, LSL, kPointerSizeLog2 - kSmiTagSize)); |
6112 __ ldr(result, FieldMemOperand(scratch, | 6102 __ ldr(result, FieldMemOperand(scratch, |
6113 FixedArray::kHeaderSize - kPointerSize)); | 6103 FixedArray::kHeaderSize - kPointerSize)); |
6114 __ bind(&done); | 6104 __ bind(&done); |
6115 } | 6105 } |
6116 | 6106 |
6117 | 6107 |
6118 #undef __ | 6108 #undef __ |
6119 | 6109 |
6120 } } // namespace v8::internal | 6110 } } // namespace v8::internal |
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