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diff --git a/deps/v8/src/compiler/js-call-reducer.h b/deps/v8/src/compiler/js-call-reducer.h
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+++ b/deps/v8/src/compiler/js-call-reducer.h
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+// Copyright 2015 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_CALL_REDUCER_H_
+#define V8_COMPILER_JS_CALL_REDUCER_H_
+
+#include "src/base/flags.h"
+#include "src/compiler/graph-reducer.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// Forward declarations.
+class CommonOperatorBuilder;
+class JSGraph;
+class JSOperatorBuilder;
+
+
+// Performs strength reduction on {JSCallConstruct} and {JSCallFunction} nodes,
+// which might allow inlining or other optimizations to be performed afterwards.
+class JSCallReducer final : public Reducer {
+ public:
+  // Flags that control the mode of operation.
+  enum Flag {
+    kNoFlags = 0u,
+    kDeoptimizationEnabled = 1u << 0,
+  };
+  typedef base::Flags<Flag> Flags;
+
+  JSCallReducer(JSGraph* jsgraph, Flags flags,
+                MaybeHandle<Context> native_context)
+      : jsgraph_(jsgraph), flags_(flags), native_context_(native_context) {}
+
+  Reduction Reduce(Node* node) final;
+
+ private:
+  Reduction ReduceArrayConstructor(Node* node);
+  Reduction ReduceNumberConstructor(Node* node);
+  Reduction ReduceFunctionPrototypeApply(Node* node);
+  Reduction ReduceFunctionPrototypeCall(Node* node);
+  Reduction ReduceJSCallConstruct(Node* node);
+  Reduction ReduceJSCallFunction(Node* node);
+
+  MaybeHandle<Context> GetNativeContext(Node* node);
+
+  Graph* graph() const;
+  Flags flags() const { return flags_; }
+  JSGraph* jsgraph() const { return jsgraph_; }
+  Isolate* isolate() const;
+  MaybeHandle<Context> native_context() const { return native_context_; }
+  CommonOperatorBuilder* common() const;
+  JSOperatorBuilder* javascript() const;
+
+  JSGraph* const jsgraph_;
+  Flags const flags_;
+  MaybeHandle<Context> const native_context_;
+};
+
+DEFINE_OPERATORS_FOR_FLAGS(JSCallReducer::Flags)
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_COMPILER_JS_CALL_REDUCER_H_