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Issue 2164253002: [turbofan] New GraphReducer based LoadElimination. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Teach alias analysis about FinishRegion. Created 4 years, 4 months 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/pipeline.h" 5 #include "src/compiler/pipeline.h"
6 6
7 #include <fstream> // NOLINT(readability/streams) 7 #include <fstream> // NOLINT(readability/streams)
8 #include <sstream> 8 #include <sstream>
9 9
10 #include "src/base/adapters.h" 10 #include "src/base/adapters.h"
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894 typed_lowering_flags |= JSTypedLowering::kDisableIntegerBinaryOpReduction; 894 typed_lowering_flags |= JSTypedLowering::kDisableIntegerBinaryOpReduction;
895 } 895 }
896 JSTypedLowering typed_lowering(&graph_reducer, data->info()->dependencies(), 896 JSTypedLowering typed_lowering(&graph_reducer, data->info()->dependencies(),
897 typed_lowering_flags, data->jsgraph(), 897 typed_lowering_flags, data->jsgraph(),
898 temp_zone); 898 temp_zone);
899 JSIntrinsicLowering intrinsic_lowering( 899 JSIntrinsicLowering intrinsic_lowering(
900 &graph_reducer, data->jsgraph(), 900 &graph_reducer, data->jsgraph(),
901 data->info()->is_deoptimization_enabled() 901 data->info()->is_deoptimization_enabled()
902 ? JSIntrinsicLowering::kDeoptimizationEnabled 902 ? JSIntrinsicLowering::kDeoptimizationEnabled
903 : JSIntrinsicLowering::kDeoptimizationDisabled); 903 : JSIntrinsicLowering::kDeoptimizationDisabled);
904 ValueNumberingReducer value_numbering(temp_zone, data->graph()->zone());
905 SimplifiedOperatorReducer simple_reducer(&graph_reducer, data->jsgraph()); 904 SimplifiedOperatorReducer simple_reducer(&graph_reducer, data->jsgraph());
906 CheckpointElimination checkpoint_elimination(&graph_reducer); 905 CheckpointElimination checkpoint_elimination(&graph_reducer);
907 CommonOperatorReducer common_reducer(&graph_reducer, data->graph(), 906 CommonOperatorReducer common_reducer(&graph_reducer, data->graph(),
908 data->common(), data->machine()); 907 data->common(), data->machine());
909 AddReducer(data, &graph_reducer, &dead_code_elimination); 908 AddReducer(data, &graph_reducer, &dead_code_elimination);
910 AddReducer(data, &graph_reducer, &builtin_reducer); 909 AddReducer(data, &graph_reducer, &builtin_reducer);
911 if (data->info()->is_deoptimization_enabled()) { 910 if (data->info()->is_deoptimization_enabled()) {
912 AddReducer(data, &graph_reducer, &create_lowering); 911 AddReducer(data, &graph_reducer, &create_lowering);
913 } 912 }
914 AddReducer(data, &graph_reducer, &typed_lowering); 913 AddReducer(data, &graph_reducer, &typed_lowering);
915 AddReducer(data, &graph_reducer, &intrinsic_lowering); 914 AddReducer(data, &graph_reducer, &intrinsic_lowering);
916 AddReducer(data, &graph_reducer, &value_numbering);
917 AddReducer(data, &graph_reducer, &simple_reducer); 915 AddReducer(data, &graph_reducer, &simple_reducer);
918 AddReducer(data, &graph_reducer, &checkpoint_elimination); 916 AddReducer(data, &graph_reducer, &checkpoint_elimination);
919 AddReducer(data, &graph_reducer, &common_reducer); 917 AddReducer(data, &graph_reducer, &common_reducer);
920 graph_reducer.ReduceGraph(); 918 graph_reducer.ReduceGraph();
921 } 919 }
922 }; 920 };
923 921
924 922
925 struct EscapeAnalysisPhase { 923 struct EscapeAnalysisPhase {
926 static const char* phase_name() { return "escape analysis"; } 924 static const char* phase_name() { return "escape analysis"; }
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1044 void Run(PipelineData* data, Zone* temp_zone) { 1042 void Run(PipelineData* data, Zone* temp_zone) {
1045 StoreStoreElimination store_store_elimination(data->jsgraph(), temp_zone); 1043 StoreStoreElimination store_store_elimination(data->jsgraph(), temp_zone);
1046 store_store_elimination.Run(); 1044 store_store_elimination.Run();
1047 } 1045 }
1048 }; 1046 };
1049 1047
1050 struct LoadEliminationPhase { 1048 struct LoadEliminationPhase {
1051 static const char* phase_name() { return "load elimination"; } 1049 static const char* phase_name() { return "load elimination"; }
1052 1050
1053 void Run(PipelineData* data, Zone* temp_zone) { 1051 void Run(PipelineData* data, Zone* temp_zone) {
1054 // The memory optimizer requires the graphs to be trimmed, so trim now. 1052 JSGraphReducer graph_reducer(data->jsgraph(), temp_zone);
1055 GraphTrimmer trimmer(temp_zone, data->graph()); 1053 RedundancyElimination redundancy_elimination(&graph_reducer, temp_zone);
1056 NodeVector roots(temp_zone); 1054 LoadElimination load_elimination(&graph_reducer, temp_zone);
1057 data->jsgraph()->GetCachedNodes(&roots); 1055 ValueNumberingReducer value_numbering(temp_zone, data->graph()->zone());
1058 trimmer.TrimGraph(roots.begin(), roots.end()); 1056 AddReducer(data, &graph_reducer, &redundancy_elimination);
1059 1057 AddReducer(data, &graph_reducer, &load_elimination);
1060 // Eliminate redundant loads. 1058 AddReducer(data, &graph_reducer, &value_numbering);
1061 LoadElimination load_elimination(data->graph(), temp_zone); 1059 graph_reducer.ReduceGraph();
1062 load_elimination.Run();
1063 } 1060 }
1064 }; 1061 };
1065 1062
1066 struct MemoryOptimizationPhase { 1063 struct MemoryOptimizationPhase {
1067 static const char* phase_name() { return "memory optimization"; } 1064 static const char* phase_name() { return "memory optimization"; }
1068 1065
1069 void Run(PipelineData* data, Zone* temp_zone) { 1066 void Run(PipelineData* data, Zone* temp_zone) {
1070 // The memory optimizer requires the graphs to be trimmed, so trim now. 1067 // The memory optimizer requires the graphs to be trimmed, so trim now.
1071 GraphTrimmer trimmer(temp_zone, data->graph()); 1068 GraphTrimmer trimmer(temp_zone, data->graph());
1072 NodeVector roots(temp_zone); 1069 NodeVector roots(temp_zone);
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1866 data->DeleteRegisterAllocationZone(); 1863 data->DeleteRegisterAllocationZone();
1867 } 1864 }
1868 1865
1869 CompilationInfo* PipelineImpl::info() const { return data_->info(); } 1866 CompilationInfo* PipelineImpl::info() const { return data_->info(); }
1870 1867
1871 Isolate* PipelineImpl::isolate() const { return info()->isolate(); } 1868 Isolate* PipelineImpl::isolate() const { return info()->isolate(); }
1872 1869
1873 } // namespace compiler 1870 } // namespace compiler
1874 } // namespace internal 1871 } // namespace internal
1875 } // namespace v8 1872 } // namespace v8
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