Line data    Source code

       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       39760 : class V8_EXPORT_PRIVATE EscapeAnalysisReducer final
      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             :   void Finalize() override;
      30             : 
      31             :   // Verifies that all virtual allocation nodes have been dealt with. Run it
      32             :   // after this reducer has been applied. Has no effect in release mode.
      33             :   void VerifyReplacement() const;
      34             : 
      35             :   bool compilation_failed() const { return compilation_failed_; }
      36             : 
      37             :  private:
      38             :   Reduction ReduceNode(Node* node);
      39             :   Reduction ReduceLoad(Node* node);
      40             :   Reduction ReduceStore(Node* node);
      41             :   Reduction ReduceCheckMaps(Node* node);
      42             :   Reduction ReduceAllocate(Node* node);
      43             :   Reduction ReduceFinishRegion(Node* node);
      44             :   Reduction ReduceReferenceEqual(Node* node);
      45             :   Reduction ReduceObjectIsSmi(Node* node);
      46             :   Reduction ReduceFrameStateUses(Node* node);
      47             :   Node* ReduceDeoptState(Node* node, Node* effect, bool multiple_users);
      48             :   Node* ReduceStateValueInput(Node* node, int node_index, Node* effect,
      49             :                               bool node_multiused, bool already_cloned,
      50             :                               bool multiple_users);
      51             : 
      52             :   JSGraph* jsgraph() const { return jsgraph_; }
      53             :   EscapeAnalysis* escape_analysis() const { return escape_analysis_; }
      54             :   Zone* zone() const { return zone_; }
      55             : 
      56             :   JSGraph* const jsgraph_;
      57             :   EscapeAnalysis* escape_analysis_;
      58             :   Zone* const zone_;
      59             :   // This bit vector marks nodes we already processed (allocs, loads, stores)
      60             :   // and nodes that do not need a visit from ReduceDeoptState etc.
      61             :   BitVector fully_reduced_;
      62             :   bool exists_virtual_allocate_;
      63             :   std::set<Node*> arguments_elements_;
      64             :   bool compilation_failed_ = false;
      65             : 
      66             :   DISALLOW_COPY_AND_ASSIGN(EscapeAnalysisReducer);
      67             : };
      68             : 
      69             : }  // namespace compiler
      70             : }  // namespace internal
      71             : }  // namespace v8
      72             : 
      73             : #endif  // V8_COMPILER_ESCAPE_ANALYSIS_REDUCER_H_