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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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880 int index = chunk_->AddInstruction(instr, current_block_); | 880 int index = chunk_->AddInstruction(instr, current_block_); |
881 allocator_->SummarizeInstruction(index); | 881 allocator_->SummarizeInstruction(index); |
882 } else { | 882 } else { |
883 // This instruction should be omitted. | 883 // This instruction should be omitted. |
884 allocator_->OmitInstruction(); | 884 allocator_->OmitInstruction(); |
885 } | 885 } |
886 current_instruction_ = old_current; | 886 current_instruction_ = old_current; |
887 } | 887 } |
888 | 888 |
889 | 889 |
890 void LEnvironment::WriteTranslation(LCodeGen* cgen, | |
891 Translation* translation) const { | |
892 if (this == NULL) return; | |
893 | |
894 // The translation includes one command per value in the environment. | |
895 int translation_size = values()->length(); | |
896 // The output frame height does not include the parameters. | |
897 int height = translation_size - parameter_count(); | |
898 | |
899 outer()->WriteTranslation(cgen, translation); | |
900 int closure_id = cgen->DefineDeoptimizationLiteral(closure()); | |
901 translation->BeginFrame(ast_id(), closure_id, height); | |
902 for (int i = 0; i < translation_size; ++i) { | |
903 LOperand* value = values()->at(i); | |
904 // spilled_registers_ and spilled_double_registers_ are either | |
905 // both NULL or both set. | |
906 if (spilled_registers_ != NULL && value != NULL) { | |
907 if (value->IsRegister() && | |
908 spilled_registers_[value->index()] != NULL) { | |
909 translation->MarkDuplicate(); | |
910 cgen->AddToTranslation(translation, | |
911 spilled_registers_[value->index()], | |
912 HasTaggedValueAt(i)); | |
913 } else if (value->IsDoubleRegister() && | |
914 spilled_double_registers_[value->index()] != NULL) { | |
915 translation->MarkDuplicate(); | |
916 cgen->AddToTranslation(translation, | |
917 spilled_double_registers_[value->index()], | |
918 false); | |
919 } | |
920 } | |
921 | |
922 cgen->AddToTranslation(translation, value, HasTaggedValueAt(i)); | |
923 } | |
924 } | |
925 | |
926 | |
927 void LEnvironment::PrintTo(StringStream* stream) const { | |
928 stream->Add("[id=%d|", ast_id()); | |
929 stream->Add("[parameters=%d|", parameter_count()); | |
930 stream->Add("[arguments_stack_height=%d|", arguments_stack_height()); | |
931 for (int i = 0; i < values_.length(); ++i) { | |
932 if (i != 0) stream->Add(";"); | |
933 if (values_[i] == NULL) { | |
934 stream->Add("[hole]"); | |
935 } else { | |
936 values_[i]->PrintTo(stream); | |
937 } | |
938 } | |
939 stream->Add("]"); | |
940 } | |
941 | |
942 | |
943 LEnvironment* LChunkBuilder::CreateEnvironment(HEnvironment* hydrogen_env) { | 890 LEnvironment* LChunkBuilder::CreateEnvironment(HEnvironment* hydrogen_env) { |
944 if (hydrogen_env == NULL) return NULL; | 891 if (hydrogen_env == NULL) return NULL; |
945 | 892 |
946 LEnvironment* outer = CreateEnvironment(hydrogen_env->outer()); | 893 LEnvironment* outer = CreateEnvironment(hydrogen_env->outer()); |
947 int ast_id = hydrogen_env->ast_id(); | 894 int ast_id = hydrogen_env->ast_id(); |
948 ASSERT(ast_id != AstNode::kNoNumber); | 895 ASSERT(ast_id != AstNode::kNoNumber); |
949 int value_count = hydrogen_env->length(); | 896 int value_count = hydrogen_env->length(); |
950 LEnvironment* result = new LEnvironment(hydrogen_env->closure(), | 897 LEnvironment* result = new LEnvironment(hydrogen_env->closure(), |
951 ast_id, | 898 ast_id, |
952 hydrogen_env->parameter_count(), | 899 hydrogen_env->parameter_count(), |
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1891 } | 1838 } |
1892 | 1839 |
1893 | 1840 |
1894 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) { | 1841 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) { |
1895 HEnvironment* outer = current_block_->last_environment()->outer(); | 1842 HEnvironment* outer = current_block_->last_environment()->outer(); |
1896 current_block_->UpdateEnvironment(outer); | 1843 current_block_->UpdateEnvironment(outer); |
1897 return NULL; | 1844 return NULL; |
1898 } | 1845 } |
1899 | 1846 |
1900 | 1847 |
1901 void LPointerMap::RecordPointer(LOperand* op) { | |
1902 // Do not record arguments as pointers. | |
1903 if (op->IsStackSlot() && op->index() < 0) return; | |
1904 ASSERT(!op->IsDoubleRegister() && !op->IsDoubleStackSlot()); | |
1905 pointer_operands_.Add(op); | |
1906 } | |
1907 | |
1908 | |
1909 void LPointerMap::PrintTo(StringStream* stream) const { | |
1910 stream->Add("{"); | |
1911 for (int i = 0; i < pointer_operands_.length(); ++i) { | |
1912 if (i != 0) stream->Add(";"); | |
1913 pointer_operands_[i]->PrintTo(stream); | |
1914 } | |
1915 stream->Add("} @%d", position()); | |
1916 } | |
1917 | |
1918 } } // namespace v8::internal | 1848 } } // namespace v8::internal |
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