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
3// found in the LICENSE file.
4
5#ifndef V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_
6#define V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_
7
8#include "src/compiler/graph-reducer.h"
9#include "src/compiler/js-graph.h"
10#include "src/contexts.h"
11#include "src/v8.h"
12
13namespace v8 {
14namespace internal {
15namespace compiler {
16
17// Specializes a given JSGraph to a given context, potentially constant folding
18// some {LoadContext} nodes or strength reducing some {StoreContext} nodes.
19class JSContextSpecializer {
20 public:
21  JSContextSpecializer(CompilationInfo* info, JSGraph* jsgraph, Node* context)
22      : info_(info), jsgraph_(jsgraph), context_(context) {}
23
24  void SpecializeToContext();
25  Reduction ReduceJSLoadContext(Node* node);
26  Reduction ReduceJSStoreContext(Node* node);
27
28 private:
29  CompilationInfo* info_;
30  JSGraph* jsgraph_;
31  Node* context_;
32};
33}
34}
35}  // namespace v8::internal::compiler
36
37#endif  // V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_
38