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Issue 717093002: Perform receiver patching for sloppy mode in high-level IR. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Minor fix. Created 6 years, 1 month ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 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 #include "src/compiler/code-generator.h" 5 #include "src/compiler/code-generator.h"
6 #include "src/compiler/code-generator-impl.h" 6 #include "src/compiler/code-generator-impl.h"
7 #include "src/compiler/gap-resolver.h" 7 #include "src/compiler/gap-resolver.h"
8 #include "src/compiler/node-matchers.h" 8 #include "src/compiler/node-matchers.h"
9 #include "src/compiler/node-properties-inl.h" 9 #include "src/compiler/node-properties-inl.h"
10 #include "src/mips/macro-assembler-mips.h" 10 #include "src/mips/macro-assembler-mips.h"
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708 register_save_area_size += kPointerSize; 708 register_save_area_size += kPointerSize;
709 } 709 }
710 frame()->SetRegisterSaveAreaSize(register_save_area_size); 710 frame()->SetRegisterSaveAreaSize(register_save_area_size);
711 __ MultiPush(saves); 711 __ MultiPush(saves);
712 } 712 }
713 } else if (descriptor->IsJSFunctionCall()) { 713 } else if (descriptor->IsJSFunctionCall()) {
714 CompilationInfo* info = this->info(); 714 CompilationInfo* info = this->info();
715 __ Prologue(info->IsCodePreAgingActive()); 715 __ Prologue(info->IsCodePreAgingActive());
716 frame()->SetRegisterSaveAreaSize( 716 frame()->SetRegisterSaveAreaSize(
717 StandardFrameConstants::kFixedFrameSizeFromFp); 717 StandardFrameConstants::kFixedFrameSizeFromFp);
718
719 // Sloppy mode functions and builtins need to replace the receiver with the
720 // global proxy when called as functions (without an explicit receiver
721 // object).
722 // TODO(mstarzinger/verwaest): Should this be moved back into the CallIC?
723 if (info->strict_mode() == SLOPPY && !info->is_native()) {
724 Label ok;
725 // +2 for return address and saved frame pointer.
726 int receiver_slot = info->scope()->num_parameters() + 2;
727 __ lw(a2, MemOperand(fp, receiver_slot * kPointerSize));
728 __ LoadRoot(at, Heap::kUndefinedValueRootIndex);
729 __ Branch(&ok, ne, a2, Operand(at));
730
731 __ lw(a2, GlobalObjectOperand());
732 __ lw(a2, FieldMemOperand(a2, GlobalObject::kGlobalProxyOffset));
733 __ sw(a2, MemOperand(fp, receiver_slot * kPointerSize));
734 __ bind(&ok);
735 }
736 } else { 718 } else {
737 __ StubPrologue(); 719 __ StubPrologue();
738 frame()->SetRegisterSaveAreaSize( 720 frame()->SetRegisterSaveAreaSize(
739 StandardFrameConstants::kFixedFrameSizeFromFp); 721 StandardFrameConstants::kFixedFrameSizeFromFp);
740 } 722 }
741 int stack_slots = frame()->GetSpillSlotCount(); 723 int stack_slots = frame()->GetSpillSlotCount();
742 if (stack_slots > 0) { 724 if (stack_slots > 0) {
743 __ Subu(sp, sp, Operand(stack_slots * kPointerSize)); 725 __ Subu(sp, sp, Operand(stack_slots * kPointerSize));
744 } 726 }
745 } 727 }
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961 } 943 }
962 } 944 }
963 MarkLazyDeoptSite(); 945 MarkLazyDeoptSite();
964 } 946 }
965 947
966 #undef __ 948 #undef __
967 949
968 } // namespace compiler 950 } // namespace compiler
969 } // namespace internal 951 } // namespace internal
970 } // namespace v8 952 } // namespace v8
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