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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 881 int index = chunk_->AddInstruction(instr, current_block_); | 881 int index = chunk_->AddInstruction(instr, current_block_); |
| 882 allocator_->SummarizeInstruction(index); | 882 allocator_->SummarizeInstruction(index); |
| 883 } else { | 883 } else { |
| 884 // This instruction should be omitted. | 884 // This instruction should be omitted. |
| 885 allocator_->OmitInstruction(); | 885 allocator_->OmitInstruction(); |
| 886 } | 886 } |
| 887 current_instruction_ = old_current; | 887 current_instruction_ = old_current; |
| 888 } | 888 } |
| 889 | 889 |
| 890 | 890 |
| 891 void LEnvironment::WriteTranslation(LCodeGen* cgen, | |
| 892 Translation* translation) const { | |
| 893 if (this == NULL) return; | |
| 894 | |
| 895 // The translation includes one command per value in the environment. | |
| 896 int translation_size = values()->length(); | |
| 897 // The output frame height does not include the parameters. | |
| 898 int height = translation_size - parameter_count(); | |
| 899 | |
| 900 outer()->WriteTranslation(cgen, translation); | |
| 901 int closure_id = cgen->DefineDeoptimizationLiteral(closure()); | |
| 902 translation->BeginFrame(ast_id(), closure_id, height); | |
| 903 for (int i = 0; i < translation_size; ++i) { | |
| 904 LOperand* value = values()->at(i); | |
| 905 // spilled_registers_ and spilled_double_registers_ are either | |
| 906 // both NULL or both set. | |
| 907 if (spilled_registers_ != NULL && value != NULL) { | |
| 908 if (value->IsRegister() && | |
| 909 spilled_registers_[value->index()] != NULL) { | |
| 910 translation->MarkDuplicate(); | |
| 911 cgen->AddToTranslation(translation, | |
| 912 spilled_registers_[value->index()], | |
| 913 HasTaggedValueAt(i)); | |
| 914 } else if (value->IsDoubleRegister() && | |
| 915 spilled_double_registers_[value->index()] != NULL) { | |
| 916 translation->MarkDuplicate(); | |
| 917 cgen->AddToTranslation(translation, | |
| 918 spilled_double_registers_[value->index()], | |
| 919 false); | |
| 920 } | |
| 921 } | |
| 922 | |
| 923 cgen->AddToTranslation(translation, value, HasTaggedValueAt(i)); | |
| 924 } | |
| 925 } | |
| 926 | |
| 927 | |
| 928 void LEnvironment::PrintTo(StringStream* stream) { | |
| 929 stream->Add("[id=%d|", ast_id()); | |
| 930 stream->Add("[parameters=%d|", parameter_count()); | |
| 931 stream->Add("[arguments_stack_height=%d|", arguments_stack_height()); | |
| 932 for (int i = 0; i < values_.length(); ++i) { | |
| 933 if (i != 0) stream->Add(";"); | |
| 934 if (values_[i] == NULL) { | |
| 935 stream->Add("[hole]"); | |
| 936 } else { | |
| 937 values_[i]->PrintTo(stream); | |
| 938 } | |
| 939 } | |
| 940 stream->Add("]"); | |
| 941 } | |
| 942 | |
| 943 | |
| 944 LEnvironment* LChunkBuilder::CreateEnvironment(HEnvironment* hydrogen_env) { | 891 LEnvironment* LChunkBuilder::CreateEnvironment(HEnvironment* hydrogen_env) { |
| 945 if (hydrogen_env == NULL) return NULL; | 892 if (hydrogen_env == NULL) return NULL; |
| 946 | 893 |
| 947 LEnvironment* outer = CreateEnvironment(hydrogen_env->outer()); | 894 LEnvironment* outer = CreateEnvironment(hydrogen_env->outer()); |
| 948 int ast_id = hydrogen_env->ast_id(); | 895 int ast_id = hydrogen_env->ast_id(); |
| 949 ASSERT(ast_id != AstNode::kNoNumber); | 896 ASSERT(ast_id != AstNode::kNoNumber); |
| 950 int value_count = hydrogen_env->length(); | 897 int value_count = hydrogen_env->length(); |
| 951 LEnvironment* result = new LEnvironment(hydrogen_env->closure(), | 898 LEnvironment* result = new LEnvironment(hydrogen_env->closure(), |
| 952 ast_id, | 899 ast_id, |
| 953 hydrogen_env->parameter_count(), | 900 hydrogen_env->parameter_count(), |
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| 1911 } | 1858 } |
| 1912 | 1859 |
| 1913 | 1860 |
| 1914 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) { | 1861 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) { |
| 1915 HEnvironment* outer = current_block_->last_environment()->outer(); | 1862 HEnvironment* outer = current_block_->last_environment()->outer(); |
| 1916 current_block_->UpdateEnvironment(outer); | 1863 current_block_->UpdateEnvironment(outer); |
| 1917 return NULL; | 1864 return NULL; |
| 1918 } | 1865 } |
| 1919 | 1866 |
| 1920 | 1867 |
| 1921 void LPointerMap::RecordPointer(LOperand* op) { | |
| 1922 // Do not record arguments as pointers. | |
| 1923 if (op->IsStackSlot() && op->index() < 0) return; | |
| 1924 ASSERT(!op->IsDoubleRegister() && !op->IsDoubleStackSlot()); | |
| 1925 pointer_operands_.Add(op); | |
| 1926 } | |
| 1927 | |
| 1928 | |
| 1929 void LPointerMap::PrintTo(StringStream* stream) { | |
| 1930 stream->Add("{"); | |
| 1931 for (int i = 0; i < pointer_operands_.length(); ++i) { | |
| 1932 if (i != 0) stream->Add(";"); | |
| 1933 pointer_operands_[i]->PrintTo(stream); | |
| 1934 } | |
| 1935 stream->Add("} @%d", position()); | |
| 1936 } | |
| 1937 | |
| 1938 } } // namespace v8::internal | 1868 } } // namespace v8::internal |
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