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 
13 namespace v8 {
14 namespace internal {
15 namespace compiler {
16 
17 // Specializes a given JSGraph to a given context, potentially constant folding
18 // some {LoadContext} nodes or strength reducing some {StoreContext} nodes.
19 class JSContextSpecializer {
20  public:
JSContextSpecializer(CompilationInfo * info,JSGraph * jsgraph,Node * context)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