Revert of [compiler] merge binary-operator-reducer

src/compiler/binary-operator-reducer.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_BINARY_OPERATOR_REDUCER_H_
+#define V8_COMPILER_BINARY_OPERATOR_REDUCER_H_
+
+#include "src/compiler/graph-reducer.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+// Forward declarations.
+class CommonOperatorBuilder;
+class Graph;
+class MachineOperatorBuilder;
+class Operator;
+
+
+// Performs strength reduction on nodes that have common operators.
+class BinaryOperatorReducer final : public AdvancedReducer {
+ public:
+  BinaryOperatorReducer(Editor* editor, Graph* graph,
+                        CommonOperatorBuilder* common,
+                        MachineOperatorBuilder* machine);
+  ~BinaryOperatorReducer() final {}
+
+  Reduction Reduce(Node* node) final;
+
+ private:
+  Reduction ReduceFloat52Mul(Node* node);
+  Reduction ReduceFloat52Div(Node* node);
+
+  Reduction Change(Node* node, Operator const* op, Node* a);
+
+  Graph* graph() const { return graph_; }
+  CommonOperatorBuilder* common() const { return common_; }
+  MachineOperatorBuilder* machine() const { return machine_; }
+  Node* dead() const { return dead_; }
+
+  Graph* const graph_;
+  CommonOperatorBuilder* const common_;
+  MachineOperatorBuilder* const machine_;
+  Node* const dead_;
+};
+
+}  // namespace compiler
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_COMPILER_BINARY_OPERATOR_REDUCER_H_