[turbofan] Some strength reduction on Smi/HeapObject checks.

src/compiler/simplified-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_SIMPLIFIED_OPERATOR_REDUCER_H_
 #define V8_COMPILER_SIMPLIFIED_OPERATOR_REDUCER_H_
 
 #include "src/compiler/graph-reducer.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class TypeCache;
 
 namespace compiler {
 
 // Forward declarations.
 class JSGraph;
 class MachineOperatorBuilder;
 class SimplifiedOperatorBuilder;
 
-
-class SimplifiedOperatorReducer final : public Reducer {
+class SimplifiedOperatorReducer final : public AdvancedReducer {
  public:
-  explicit SimplifiedOperatorReducer(JSGraph* jsgraph);
+  SimplifiedOperatorReducer(Editor* editor, JSGraph* jsgraph);
   ~SimplifiedOperatorReducer() final;
 
   Reduction Reduce(Node* node) final;
 
  private:
   Reduction ReduceReferenceEqual(Node* node);
   Reduction ReduceTypeGuard(Node* node);
 
   Reduction Change(Node* node, const Operator* op, Node* a);
   Reduction ReplaceBoolean(bool value);
@@ skipping 14 matching lines @@
   TypeCache const& type_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(SimplifiedOperatorReducer);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_SIMPLIFIED_OPERATOR_REDUCER_H_