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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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