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      1 // Copyright 2018 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_JS_HEAP_COPY_REDUCER_H_
      6 #define V8_COMPILER_JS_HEAP_COPY_REDUCER_H_
      7 
      8 #include "src/compiler/graph-reducer.h"
      9 
     10 namespace v8 {
     11 namespace internal {
     12 namespace compiler {
     13 
     14 class JSHeapBroker;
     15 
     16 // The heap copy reducer makes sure that the relevant heap data referenced
     17 // by handles embedded in the graph is copied to the heap broker.
     18 // TODO(jarin) This is just a temporary solution until the graph uses only
     19 // ObjetRef-derived reference to refer to the heap data.
     20 class JSHeapCopyReducer : public Reducer {
     21  public:
     22   explicit JSHeapCopyReducer(JSHeapBroker* broker);
     23 
     24   const char* reducer_name() const override { return "JSHeapCopyReducer"; }
     25 
     26   Reduction Reduce(Node* node) override;
     27 
     28  private:
     29   JSHeapBroker* broker();
     30 
     31   JSHeapBroker* broker_;
     32 };
     33 
     34 }  // namespace compiler
     35 }  // namespace internal
     36 }  // namespace v8
     37 
     38 #endif  // V8_COMPILER_JS_HEAP_COPY_REDUCER_H_
     39