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_TYPE_NARROWING_REDUCER_H_
6 #define V8_COMPILER_TYPE_NARROWING_REDUCER_H_
7 
8 #include "src/base/compiler-specific.h"
9 #include "src/compiler/graph-reducer.h"
10 #include "src/compiler/operation-typer.h"
11 
12 namespace v8 {
13 namespace internal {
14 namespace compiler {
15 
16 // Forward declarations.
17 class JSGraph;
18 
19 class V8_EXPORT_PRIVATE TypeNarrowingReducer final
NON_EXPORTED_BASE(AdvancedReducer)20     : public NON_EXPORTED_BASE(AdvancedReducer) {
21  public:
22   TypeNarrowingReducer(Editor* editor, JSGraph* jsgraph,
23                        JSHeapBroker* js_heap_broker);
24   ~TypeNarrowingReducer() final;
25 
26   const char* reducer_name() const override { return "TypeNarrowingReducer"; }
27 
28   Reduction Reduce(Node* node) final;
29 
30  private:
31   JSGraph* jsgraph() const { return jsgraph_; }
32   Graph* graph() const;
33   Zone* zone() const;
34 
35   JSGraph* const jsgraph_;
36   OperationTyper op_typer_;
37 
38   DISALLOW_COPY_AND_ASSIGN(TypeNarrowingReducer);
39 };
40 
41 }  // namespace compiler
42 }  // namespace internal
43 }  // namespace v8
44 
45 #endif  // V8_COMPILER_TYPE_NARROWING_REDUCER_H_
46