Revert of binary-operator-reducer: reduce mul+div(shift)

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_