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src/compiler/js-context-specialization.h

+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_
+#define V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_
+
+#include "src/compiler/graph-reducer.h"
+#include "src/compiler/js-graph.h"
+#include "src/contexts.h"
+#include "src/v8.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// Specializes a given JSGraph to a given context, potentially constant folding
+// some {LoadContext} nodes.
+class JSContextSpecializer {
+ public:
+  JSContextSpecializer(CompilationInfo* info, JSGraph* jsgraph, Node* context)
+      : info_(info), jsgraph_(jsgraph), context_(context) {}
+
+  void SpecializeToContext();
+  Reduction ReduceJSLoadContext(Node* node);
+
+ private:
+  CompilationInfo* info_;
+  JSGraph* jsgraph_;
+  Node* context_;
+};
+}
+}
+}  // namespace v8::internal::compiler
+
+#endif  // V8_COMPILER_JS_CONTEXT_SPECIALIZATION_H_