1 // Copyright 2015 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_COMPILER_ESCAPE_ANALYSIS_REDUCER_H_ 6 #define V8_COMPILER_ESCAPE_ANALYSIS_REDUCER_H_ 7 8 #include "src/base/compiler-specific.h" 9 #include "src/bit-vector.h" 10 #include "src/compiler/escape-analysis.h" 11 #include "src/compiler/graph-reducer.h" 12 #include "src/globals.h" 13 14 namespace v8 { 15 namespace internal { 16 namespace compiler { 17 18 // Forward declarations. 19 class JSGraph; 20 21 class V8_EXPORT_PRIVATE EscapeAnalysisReducer final NON_EXPORTED_BASE(AdvancedReducer)22 : public NON_EXPORTED_BASE(AdvancedReducer) { 23 public: 24 EscapeAnalysisReducer(Editor* editor, JSGraph* jsgraph, 25 EscapeAnalysis* escape_analysis, Zone* zone); 26 27 Reduction Reduce(Node* node) final; 28 29 // Verifies that all virtual allocation nodes have been dealt with. Run it 30 // after this reducer has been applied. Has no effect in release mode. 31 void VerifyReplacement() const; 32 33 bool compilation_failed() const { return compilation_failed_; } 34 35 private: 36 Reduction ReduceNode(Node* node); 37 Reduction ReduceLoad(Node* node); 38 Reduction ReduceStore(Node* node); 39 Reduction ReduceAllocate(Node* node); 40 Reduction ReduceFinishRegion(Node* node); 41 Reduction ReduceReferenceEqual(Node* node); 42 Reduction ReduceObjectIsSmi(Node* node); 43 Reduction ReduceFrameStateUses(Node* node); 44 Node* ReduceDeoptState(Node* node, Node* effect, bool multiple_users); 45 Node* ReduceStateValueInput(Node* node, int node_index, Node* effect, 46 bool node_multiused, bool already_cloned, 47 bool multiple_users); 48 49 JSGraph* jsgraph() const { return jsgraph_; } 50 EscapeAnalysis* escape_analysis() const { return escape_analysis_; } 51 Zone* zone() const { return zone_; } 52 53 JSGraph* const jsgraph_; 54 EscapeAnalysis* escape_analysis_; 55 Zone* const zone_; 56 // This bit vector marks nodes we already processed (allocs, loads, stores) 57 // and nodes that do not need a visit from ReduceDeoptState etc. 58 BitVector fully_reduced_; 59 bool exists_virtual_allocate_; 60 bool compilation_failed_ = false; 61 62 DISALLOW_COPY_AND_ASSIGN(EscapeAnalysisReducer); 63 }; 64 65 } // namespace compiler 66 } // namespace internal 67 } // namespace v8 68 69 #endif // V8_COMPILER_ESCAPE_ANALYSIS_REDUCER_H_ 70