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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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| 537       } | 537       } | 
| 538     } | 538     } | 
| 539     Translation translation(&translations_, frame_count, jsframe_count, | 539     Translation translation(&translations_, frame_count, jsframe_count, | 
| 540                             zone()); | 540                             zone()); | 
| 541     WriteTranslation(environment, &translation); | 541     WriteTranslation(environment, &translation); | 
| 542     int deoptimization_index = deoptimizations_.length(); | 542     int deoptimization_index = deoptimizations_.length(); | 
| 543     int pc_offset = masm()->pc_offset(); | 543     int pc_offset = masm()->pc_offset(); | 
| 544     environment->Register(deoptimization_index, | 544     environment->Register(deoptimization_index, | 
| 545                           translation.index(), | 545                           translation.index(), | 
| 546                           (mode == Safepoint::kLazyDeopt) ? pc_offset : -1); | 546                           (mode == Safepoint::kLazyDeopt) ? pc_offset : -1); | 
| 547     deoptimizations_.Add(environment); | 547     deoptimizations_.Add(environment, zone()); | 
| 548   } | 548   } | 
| 549 } | 549 } | 
| 550 | 550 | 
| 551 | 551 | 
| 552 void LCodeGen::DeoptimizeIf(Condition cc, LEnvironment* environment) { | 552 void LCodeGen::DeoptimizeIf(Condition cc, LEnvironment* environment) { | 
| 553   RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); | 553   RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt); | 
| 554   ASSERT(environment->HasBeenRegistered()); | 554   ASSERT(environment->HasBeenRegistered()); | 
| 555   int id = environment->deoptimization_index(); | 555   int id = environment->deoptimization_index(); | 
| 556   Address entry = Deoptimizer::GetDeoptimizationEntry(id, Deoptimizer::EAGER); | 556   Address entry = Deoptimizer::GetDeoptimizationEntry(id, Deoptimizer::EAGER); | 
| 557   if (entry == NULL) { | 557   if (entry == NULL) { | 
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| 632   } | 632   } | 
| 633   code->set_deoptimization_data(*data); | 633   code->set_deoptimization_data(*data); | 
| 634 } | 634 } | 
| 635 | 635 | 
| 636 | 636 | 
| 637 int LCodeGen::DefineDeoptimizationLiteral(Handle<Object> literal) { | 637 int LCodeGen::DefineDeoptimizationLiteral(Handle<Object> literal) { | 
| 638   int result = deoptimization_literals_.length(); | 638   int result = deoptimization_literals_.length(); | 
| 639   for (int i = 0; i < deoptimization_literals_.length(); ++i) { | 639   for (int i = 0; i < deoptimization_literals_.length(); ++i) { | 
| 640     if (deoptimization_literals_[i].is_identical_to(literal)) return i; | 640     if (deoptimization_literals_[i].is_identical_to(literal)) return i; | 
| 641   } | 641   } | 
| 642   deoptimization_literals_.Add(literal); | 642   deoptimization_literals_.Add(literal, zone()); | 
| 643   return result; | 643   return result; | 
| 644 } | 644 } | 
| 645 | 645 | 
| 646 | 646 | 
| 647 void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { | 647 void LCodeGen::PopulateDeoptimizationLiteralsWithInlinedFunctions() { | 
| 648   ASSERT(deoptimization_literals_.length() == 0); | 648   ASSERT(deoptimization_literals_.length() == 0); | 
| 649 | 649 | 
| 650   const ZoneList<Handle<JSFunction> >* inlined_closures = | 650   const ZoneList<Handle<JSFunction> >* inlined_closures = | 
| 651       chunk()->inlined_closures(); | 651       chunk()->inlined_closures(); | 
| 652 | 652 | 
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| 679     Safepoint::DeoptMode deopt_mode) { | 679     Safepoint::DeoptMode deopt_mode) { | 
| 680   ASSERT(kind == expected_safepoint_kind_); | 680   ASSERT(kind == expected_safepoint_kind_); | 
| 681   const ZoneList<LOperand*>* operands = pointers->GetNormalizedOperands(); | 681   const ZoneList<LOperand*>* operands = pointers->GetNormalizedOperands(); | 
| 682   Safepoint safepoint = | 682   Safepoint safepoint = | 
| 683       safepoints_.DefineSafepoint(masm(), kind, arguments, deopt_mode); | 683       safepoints_.DefineSafepoint(masm(), kind, arguments, deopt_mode); | 
| 684   for (int i = 0; i < operands->length(); i++) { | 684   for (int i = 0; i < operands->length(); i++) { | 
| 685     LOperand* pointer = operands->at(i); | 685     LOperand* pointer = operands->at(i); | 
| 686     if (pointer->IsStackSlot()) { | 686     if (pointer->IsStackSlot()) { | 
| 687       safepoint.DefinePointerSlot(pointer->index(), zone()); | 687       safepoint.DefinePointerSlot(pointer->index(), zone()); | 
| 688     } else if (pointer->IsRegister() && (kind & Safepoint::kWithRegisters)) { | 688     } else if (pointer->IsRegister() && (kind & Safepoint::kWithRegisters)) { | 
| 689       safepoint.DefinePointerRegister(ToRegister(pointer)); | 689       safepoint.DefinePointerRegister(ToRegister(pointer), zone()); | 
| 690     } | 690     } | 
| 691   } | 691   } | 
| 692 } | 692 } | 
| 693 | 693 | 
| 694 | 694 | 
| 695 void LCodeGen::RecordSafepoint(LPointerMap* pointers, | 695 void LCodeGen::RecordSafepoint(LPointerMap* pointers, | 
| 696                                Safepoint::DeoptMode mode) { | 696                                Safepoint::DeoptMode mode) { | 
| 697   RecordSafepoint(pointers, Safepoint::kSimple, 0, mode); | 697   RecordSafepoint(pointers, Safepoint::kSimple, 0, mode); | 
| 698 } | 698 } | 
| 699 | 699 | 
| 700 | 700 | 
| 701 void LCodeGen::RecordSafepoint(Safepoint::DeoptMode mode) { | 701 void LCodeGen::RecordSafepoint(Safepoint::DeoptMode mode) { | 
| 702   LPointerMap empty_pointers(RelocInfo::kNoPosition); | 702   LPointerMap empty_pointers(RelocInfo::kNoPosition, zone()); | 
| 703   RecordSafepoint(&empty_pointers, mode); | 703   RecordSafepoint(&empty_pointers, mode); | 
| 704 } | 704 } | 
| 705 | 705 | 
| 706 | 706 | 
| 707 void LCodeGen::RecordSafepointWithRegisters(LPointerMap* pointers, | 707 void LCodeGen::RecordSafepointWithRegisters(LPointerMap* pointers, | 
| 708                                             int arguments, | 708                                             int arguments, | 
| 709                                             Safepoint::DeoptMode mode) { | 709                                             Safepoint::DeoptMode mode) { | 
| 710   RecordSafepoint(pointers, Safepoint::kWithRegisters, arguments, mode); | 710   RecordSafepoint(pointers, Safepoint::kWithRegisters, arguments, mode); | 
| 711 } | 711 } | 
| 712 | 712 | 
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| 1978       codegen()->DoDeferredInstanceOfKnownGlobal(instr_, &map_check_); | 1978       codegen()->DoDeferredInstanceOfKnownGlobal(instr_, &map_check_); | 
| 1979     } | 1979     } | 
| 1980     virtual LInstruction* instr() { return instr_; } | 1980     virtual LInstruction* instr() { return instr_; } | 
| 1981     Label* map_check() { return &map_check_; } | 1981     Label* map_check() { return &map_check_; } | 
| 1982    private: | 1982    private: | 
| 1983     LInstanceOfKnownGlobal* instr_; | 1983     LInstanceOfKnownGlobal* instr_; | 
| 1984     Label map_check_; | 1984     Label map_check_; | 
| 1985   }; | 1985   }; | 
| 1986 | 1986 | 
| 1987   DeferredInstanceOfKnownGlobal* deferred; | 1987   DeferredInstanceOfKnownGlobal* deferred; | 
| 1988   deferred = new DeferredInstanceOfKnownGlobal(this, instr); | 1988   deferred = new(zone()) DeferredInstanceOfKnownGlobal(this, instr); | 
| 1989 | 1989 | 
| 1990   Label done, false_result; | 1990   Label done, false_result; | 
| 1991   Register object = ToRegister(instr->InputAt(1)); | 1991   Register object = ToRegister(instr->InputAt(1)); | 
| 1992   Register temp = ToRegister(instr->TempAt(0)); | 1992   Register temp = ToRegister(instr->TempAt(0)); | 
| 1993 | 1993 | 
| 1994   // A Smi is not an instance of anything. | 1994   // A Smi is not an instance of anything. | 
| 1995   __ JumpIfSmi(object, &false_result); | 1995   __ JumpIfSmi(object, &false_result); | 
| 1996 | 1996 | 
| 1997   // This is the inlined call site instanceof cache. The two occurences of the | 1997   // This is the inlined call site instanceof cache. The two occurences of the | 
| 1998   // hole value will be patched to the last map/result pair generated by the | 1998   // hole value will be patched to the last map/result pair generated by the | 
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| 2901   if (r.IsDouble()) { | 2901   if (r.IsDouble()) { | 
| 2902     XMMRegister  scratch = xmm0; | 2902     XMMRegister  scratch = xmm0; | 
| 2903     XMMRegister input_reg = ToDoubleRegister(instr->value()); | 2903     XMMRegister input_reg = ToDoubleRegister(instr->value()); | 
| 2904     __ xorps(scratch, scratch); | 2904     __ xorps(scratch, scratch); | 
| 2905     __ subsd(scratch, input_reg); | 2905     __ subsd(scratch, input_reg); | 
| 2906     __ pand(input_reg, scratch); | 2906     __ pand(input_reg, scratch); | 
| 2907   } else if (r.IsInteger32()) { | 2907   } else if (r.IsInteger32()) { | 
| 2908     EmitIntegerMathAbs(instr); | 2908     EmitIntegerMathAbs(instr); | 
| 2909   } else {  // Tagged case. | 2909   } else {  // Tagged case. | 
| 2910     DeferredMathAbsTaggedHeapNumber* deferred = | 2910     DeferredMathAbsTaggedHeapNumber* deferred = | 
| 2911         new DeferredMathAbsTaggedHeapNumber(this, instr); | 2911         new(zone()) DeferredMathAbsTaggedHeapNumber(this, instr); | 
| 2912     Register input_reg = ToRegister(instr->value()); | 2912     Register input_reg = ToRegister(instr->value()); | 
| 2913     // Smi check. | 2913     // Smi check. | 
| 2914     __ JumpIfNotSmi(input_reg, deferred->entry()); | 2914     __ JumpIfNotSmi(input_reg, deferred->entry()); | 
| 2915     EmitIntegerMathAbs(instr); | 2915     EmitIntegerMathAbs(instr); | 
| 2916     __ bind(deferred->exit()); | 2916     __ bind(deferred->exit()); | 
| 2917   } | 2917   } | 
| 2918 } | 2918 } | 
| 2919 | 2919 | 
| 2920 | 2920 | 
| 2921 void LCodeGen::DoMathFloor(LUnaryMathOperation* instr) { | 2921 void LCodeGen::DoMathFloor(LUnaryMathOperation* instr) { | 
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| 3103   class DeferredDoRandom: public LDeferredCode { | 3103   class DeferredDoRandom: public LDeferredCode { | 
| 3104    public: | 3104    public: | 
| 3105     DeferredDoRandom(LCodeGen* codegen, LRandom* instr) | 3105     DeferredDoRandom(LCodeGen* codegen, LRandom* instr) | 
| 3106         : LDeferredCode(codegen), instr_(instr) { } | 3106         : LDeferredCode(codegen), instr_(instr) { } | 
| 3107     virtual void Generate() { codegen()->DoDeferredRandom(instr_); } | 3107     virtual void Generate() { codegen()->DoDeferredRandom(instr_); } | 
| 3108     virtual LInstruction* instr() { return instr_; } | 3108     virtual LInstruction* instr() { return instr_; } | 
| 3109    private: | 3109    private: | 
| 3110     LRandom* instr_; | 3110     LRandom* instr_; | 
| 3111   }; | 3111   }; | 
| 3112 | 3112 | 
| 3113   DeferredDoRandom* deferred = new DeferredDoRandom(this, instr); | 3113   DeferredDoRandom* deferred = new(zone()) DeferredDoRandom(this, instr); | 
| 3114 | 3114 | 
| 3115   // Having marked this instruction as a call we can use any | 3115   // Having marked this instruction as a call we can use any | 
| 3116   // registers. | 3116   // registers. | 
| 3117   ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); | 3117   ASSERT(ToDoubleRegister(instr->result()).is(xmm1)); | 
| 3118   ASSERT(ToRegister(instr->InputAt(0)).is(eax)); | 3118   ASSERT(ToRegister(instr->InputAt(0)).is(eax)); | 
| 3119   // Assert that the register size is indeed the size of each seed. | 3119   // Assert that the register size is indeed the size of each seed. | 
| 3120   static const int kSeedSize = sizeof(uint32_t); | 3120   static const int kSeedSize = sizeof(uint32_t); | 
| 3121   STATIC_ASSERT(kPointerSize == kSeedSize); | 3121   STATIC_ASSERT(kPointerSize == kSeedSize); | 
| 3122 | 3122 | 
| 3123   __ mov(eax, FieldOperand(eax, GlobalObject::kGlobalContextOffset)); | 3123   __ mov(eax, FieldOperand(eax, GlobalObject::kGlobalContextOffset)); | 
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| 3619    public: | 3619    public: | 
| 3620     DeferredStringCharCodeAt(LCodeGen* codegen, LStringCharCodeAt* instr) | 3620     DeferredStringCharCodeAt(LCodeGen* codegen, LStringCharCodeAt* instr) | 
| 3621         : LDeferredCode(codegen), instr_(instr) { } | 3621         : LDeferredCode(codegen), instr_(instr) { } | 
| 3622     virtual void Generate() { codegen()->DoDeferredStringCharCodeAt(instr_); } | 3622     virtual void Generate() { codegen()->DoDeferredStringCharCodeAt(instr_); } | 
| 3623     virtual LInstruction* instr() { return instr_; } | 3623     virtual LInstruction* instr() { return instr_; } | 
| 3624    private: | 3624    private: | 
| 3625     LStringCharCodeAt* instr_; | 3625     LStringCharCodeAt* instr_; | 
| 3626   }; | 3626   }; | 
| 3627 | 3627 | 
| 3628   DeferredStringCharCodeAt* deferred = | 3628   DeferredStringCharCodeAt* deferred = | 
| 3629       new DeferredStringCharCodeAt(this, instr); | 3629       new(zone()) DeferredStringCharCodeAt(this, instr); | 
| 3630 | 3630 | 
| 3631   StringCharLoadGenerator::Generate(masm(), | 3631   StringCharLoadGenerator::Generate(masm(), | 
| 3632                                     factory(), | 3632                                     factory(), | 
| 3633                                     ToRegister(instr->string()), | 3633                                     ToRegister(instr->string()), | 
| 3634                                     ToRegister(instr->index()), | 3634                                     ToRegister(instr->index()), | 
| 3635                                     ToRegister(instr->result()), | 3635                                     ToRegister(instr->result()), | 
| 3636                                     deferred->entry()); | 3636                                     deferred->entry()); | 
| 3637   __ bind(deferred->exit()); | 3637   __ bind(deferred->exit()); | 
| 3638 } | 3638 } | 
| 3639 | 3639 | 
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| 3675    public: | 3675    public: | 
| 3676     DeferredStringCharFromCode(LCodeGen* codegen, LStringCharFromCode* instr) | 3676     DeferredStringCharFromCode(LCodeGen* codegen, LStringCharFromCode* instr) | 
| 3677         : LDeferredCode(codegen), instr_(instr) { } | 3677         : LDeferredCode(codegen), instr_(instr) { } | 
| 3678     virtual void Generate() { codegen()->DoDeferredStringCharFromCode(instr_); } | 3678     virtual void Generate() { codegen()->DoDeferredStringCharFromCode(instr_); } | 
| 3679     virtual LInstruction* instr() { return instr_; } | 3679     virtual LInstruction* instr() { return instr_; } | 
| 3680    private: | 3680    private: | 
| 3681     LStringCharFromCode* instr_; | 3681     LStringCharFromCode* instr_; | 
| 3682   }; | 3682   }; | 
| 3683 | 3683 | 
| 3684   DeferredStringCharFromCode* deferred = | 3684   DeferredStringCharFromCode* deferred = | 
| 3685       new DeferredStringCharFromCode(this, instr); | 3685       new(zone()) DeferredStringCharFromCode(this, instr); | 
| 3686 | 3686 | 
| 3687   ASSERT(instr->hydrogen()->value()->representation().IsInteger32()); | 3687   ASSERT(instr->hydrogen()->value()->representation().IsInteger32()); | 
| 3688   Register char_code = ToRegister(instr->char_code()); | 3688   Register char_code = ToRegister(instr->char_code()); | 
| 3689   Register result = ToRegister(instr->result()); | 3689   Register result = ToRegister(instr->result()); | 
| 3690   ASSERT(!char_code.is(result)); | 3690   ASSERT(!char_code.is(result)); | 
| 3691 | 3691 | 
| 3692   __ cmp(char_code, String::kMaxAsciiCharCode); | 3692   __ cmp(char_code, String::kMaxAsciiCharCode); | 
| 3693   __ j(above, deferred->entry()); | 3693   __ j(above, deferred->entry()); | 
| 3694   __ Set(result, Immediate(factory()->single_character_string_cache())); | 3694   __ Set(result, Immediate(factory()->single_character_string_cache())); | 
| 3695   __ mov(result, FieldOperand(result, | 3695   __ mov(result, FieldOperand(result, | 
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| 3750     virtual void Generate() { codegen()->DoDeferredNumberTagI(instr_); } | 3750     virtual void Generate() { codegen()->DoDeferredNumberTagI(instr_); } | 
| 3751     virtual LInstruction* instr() { return instr_; } | 3751     virtual LInstruction* instr() { return instr_; } | 
| 3752    private: | 3752    private: | 
| 3753     LNumberTagI* instr_; | 3753     LNumberTagI* instr_; | 
| 3754   }; | 3754   }; | 
| 3755 | 3755 | 
| 3756   LOperand* input = instr->InputAt(0); | 3756   LOperand* input = instr->InputAt(0); | 
| 3757   ASSERT(input->IsRegister() && input->Equals(instr->result())); | 3757   ASSERT(input->IsRegister() && input->Equals(instr->result())); | 
| 3758   Register reg = ToRegister(input); | 3758   Register reg = ToRegister(input); | 
| 3759 | 3759 | 
| 3760   DeferredNumberTagI* deferred = new DeferredNumberTagI(this, instr); | 3760   DeferredNumberTagI* deferred = new(zone()) DeferredNumberTagI(this, instr); | 
| 3761   __ SmiTag(reg); | 3761   __ SmiTag(reg); | 
| 3762   __ j(overflow, deferred->entry()); | 3762   __ j(overflow, deferred->entry()); | 
| 3763   __ bind(deferred->exit()); | 3763   __ bind(deferred->exit()); | 
| 3764 } | 3764 } | 
| 3765 | 3765 | 
| 3766 | 3766 | 
| 3767 void LCodeGen::DoDeferredNumberTagI(LNumberTagI* instr) { | 3767 void LCodeGen::DoDeferredNumberTagI(LNumberTagI* instr) { | 
| 3768   Label slow; | 3768   Label slow; | 
| 3769   Register reg = ToRegister(instr->InputAt(0)); | 3769   Register reg = ToRegister(instr->InputAt(0)); | 
| 3770   Register tmp = reg.is(eax) ? ecx : eax; | 3770   Register tmp = reg.is(eax) ? ecx : eax; | 
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| 3818     virtual void Generate() { codegen()->DoDeferredNumberTagD(instr_); } | 3818     virtual void Generate() { codegen()->DoDeferredNumberTagD(instr_); } | 
| 3819     virtual LInstruction* instr() { return instr_; } | 3819     virtual LInstruction* instr() { return instr_; } | 
| 3820    private: | 3820    private: | 
| 3821     LNumberTagD* instr_; | 3821     LNumberTagD* instr_; | 
| 3822   }; | 3822   }; | 
| 3823 | 3823 | 
| 3824   XMMRegister input_reg = ToDoubleRegister(instr->InputAt(0)); | 3824   XMMRegister input_reg = ToDoubleRegister(instr->InputAt(0)); | 
| 3825   Register reg = ToRegister(instr->result()); | 3825   Register reg = ToRegister(instr->result()); | 
| 3826   Register tmp = ToRegister(instr->TempAt(0)); | 3826   Register tmp = ToRegister(instr->TempAt(0)); | 
| 3827 | 3827 | 
| 3828   DeferredNumberTagD* deferred = new DeferredNumberTagD(this, instr); | 3828   DeferredNumberTagD* deferred = new(zone()) DeferredNumberTagD(this, instr); | 
| 3829   if (FLAG_inline_new) { | 3829   if (FLAG_inline_new) { | 
| 3830     __ AllocateHeapNumber(reg, tmp, no_reg, deferred->entry()); | 3830     __ AllocateHeapNumber(reg, tmp, no_reg, deferred->entry()); | 
| 3831   } else { | 3831   } else { | 
| 3832     __ jmp(deferred->entry()); | 3832     __ jmp(deferred->entry()); | 
| 3833   } | 3833   } | 
| 3834   __ bind(deferred->exit()); | 3834   __ bind(deferred->exit()); | 
| 3835   __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), input_reg); | 3835   __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), input_reg); | 
| 3836 } | 3836 } | 
| 3837 | 3837 | 
| 3838 | 3838 | 
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| 4018    private: | 4018    private: | 
| 4019     LTaggedToI* instr_; | 4019     LTaggedToI* instr_; | 
| 4020   }; | 4020   }; | 
| 4021 | 4021 | 
| 4022   LOperand* input = instr->InputAt(0); | 4022   LOperand* input = instr->InputAt(0); | 
| 4023   ASSERT(input->IsRegister()); | 4023   ASSERT(input->IsRegister()); | 
| 4024   ASSERT(input->Equals(instr->result())); | 4024   ASSERT(input->Equals(instr->result())); | 
| 4025 | 4025 | 
| 4026   Register input_reg = ToRegister(input); | 4026   Register input_reg = ToRegister(input); | 
| 4027 | 4027 | 
| 4028   DeferredTaggedToI* deferred = new DeferredTaggedToI(this, instr); | 4028   DeferredTaggedToI* deferred = new(zone()) DeferredTaggedToI(this, instr); | 
| 4029 | 4029 | 
| 4030   // Smi check. | 4030   // Smi check. | 
| 4031   __ JumpIfNotSmi(input_reg, deferred->entry()); | 4031   __ JumpIfNotSmi(input_reg, deferred->entry()); | 
| 4032 | 4032 | 
| 4033   // Smi to int32 conversion | 4033   // Smi to int32 conversion | 
| 4034   __ SmiUntag(input_reg);  // Untag smi. | 4034   __ SmiUntag(input_reg);  // Untag smi. | 
| 4035 | 4035 | 
| 4036   __ bind(deferred->exit()); | 4036   __ bind(deferred->exit()); | 
| 4037 } | 4037 } | 
| 4038 | 4038 | 
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| 4359   class DeferredAllocateObject: public LDeferredCode { | 4359   class DeferredAllocateObject: public LDeferredCode { | 
| 4360    public: | 4360    public: | 
| 4361     DeferredAllocateObject(LCodeGen* codegen, LAllocateObject* instr) | 4361     DeferredAllocateObject(LCodeGen* codegen, LAllocateObject* instr) | 
| 4362         : LDeferredCode(codegen), instr_(instr) { } | 4362         : LDeferredCode(codegen), instr_(instr) { } | 
| 4363     virtual void Generate() { codegen()->DoDeferredAllocateObject(instr_); } | 4363     virtual void Generate() { codegen()->DoDeferredAllocateObject(instr_); } | 
| 4364     virtual LInstruction* instr() { return instr_; } | 4364     virtual LInstruction* instr() { return instr_; } | 
| 4365    private: | 4365    private: | 
| 4366     LAllocateObject* instr_; | 4366     LAllocateObject* instr_; | 
| 4367   }; | 4367   }; | 
| 4368 | 4368 | 
| 4369   DeferredAllocateObject* deferred = new DeferredAllocateObject(this, instr); | 4369   DeferredAllocateObject* deferred = | 
|  | 4370       new(zone()) DeferredAllocateObject(this, instr); | 
| 4370 | 4371 | 
| 4371   Register result = ToRegister(instr->result()); | 4372   Register result = ToRegister(instr->result()); | 
| 4372   Register scratch = ToRegister(instr->TempAt(0)); | 4373   Register scratch = ToRegister(instr->TempAt(0)); | 
| 4373   Handle<JSFunction> constructor = instr->hydrogen()->constructor(); | 4374   Handle<JSFunction> constructor = instr->hydrogen()->constructor(); | 
| 4374   Handle<Map> initial_map(constructor->initial_map()); | 4375   Handle<Map> initial_map(constructor->initial_map()); | 
| 4375   int instance_size = initial_map->instance_size(); | 4376   int instance_size = initial_map->instance_size(); | 
| 4376   ASSERT(initial_map->pre_allocated_property_fields() + | 4377   ASSERT(initial_map->pre_allocated_property_fields() + | 
| 4377          initial_map->unused_property_fields() - | 4378          initial_map->unused_property_fields() - | 
| 4378          initial_map->inobject_properties() == 0); | 4379          initial_map->inobject_properties() == 0); | 
| 4379 | 4380 | 
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| 4974     StackCheckStub stub; | 4975     StackCheckStub stub; | 
| 4975     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); | 4976     CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr); | 
| 4976     EnsureSpaceForLazyDeopt(); | 4977     EnsureSpaceForLazyDeopt(); | 
| 4977     __ bind(&done); | 4978     __ bind(&done); | 
| 4978     RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); | 4979     RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); | 
| 4979     safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); | 4980     safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index()); | 
| 4980   } else { | 4981   } else { | 
| 4981     ASSERT(instr->hydrogen()->is_backwards_branch()); | 4982     ASSERT(instr->hydrogen()->is_backwards_branch()); | 
| 4982     // Perform stack overflow check if this goto needs it before jumping. | 4983     // Perform stack overflow check if this goto needs it before jumping. | 
| 4983     DeferredStackCheck* deferred_stack_check = | 4984     DeferredStackCheck* deferred_stack_check = | 
| 4984         new DeferredStackCheck(this, instr); | 4985         new(zone()) DeferredStackCheck(this, instr); | 
| 4985     ExternalReference stack_limit = | 4986     ExternalReference stack_limit = | 
| 4986         ExternalReference::address_of_stack_limit(isolate()); | 4987         ExternalReference::address_of_stack_limit(isolate()); | 
| 4987     __ cmp(esp, Operand::StaticVariable(stack_limit)); | 4988     __ cmp(esp, Operand::StaticVariable(stack_limit)); | 
| 4988     __ j(below, deferred_stack_check->entry()); | 4989     __ j(below, deferred_stack_check->entry()); | 
| 4989     EnsureSpaceForLazyDeopt(); | 4990     EnsureSpaceForLazyDeopt(); | 
| 4990     __ bind(instr->done_label()); | 4991     __ bind(instr->done_label()); | 
| 4991     deferred_stack_check->SetExit(instr->done_label()); | 4992     deferred_stack_check->SetExit(instr->done_label()); | 
| 4992     RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); | 4993     RegisterEnvironmentForDeoptimization(env, Safepoint::kLazyDeopt); | 
| 4993     // Don't record a deoptimization index for the safepoint here. | 4994     // Don't record a deoptimization index for the safepoint here. | 
| 4994     // This will be done explicitly when emitting call and the safepoint in | 4995     // This will be done explicitly when emitting call and the safepoint in | 
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| 5104                               FixedArray::kHeaderSize - kPointerSize)); | 5105                               FixedArray::kHeaderSize - kPointerSize)); | 
| 5105   __ bind(&done); | 5106   __ bind(&done); | 
| 5106 } | 5107 } | 
| 5107 | 5108 | 
| 5108 | 5109 | 
| 5109 #undef __ | 5110 #undef __ | 
| 5110 | 5111 | 
| 5111 } }  // namespace v8::internal | 5112 } }  // namespace v8::internal | 
| 5112 | 5113 | 
| 5113 #endif  // V8_TARGET_ARCH_IA32 | 5114 #endif  // V8_TARGET_ARCH_IA32 | 
| OLD | NEW | 
|---|