[turbofan] Remove locally constructed simplified builders.

src/compiler/js-typed-lowering.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_TYPED_LOWERING_H_
 #define V8_COMPILER_JS_TYPED_LOWERING_H_
 
 #include "src/compiler/graph-reducer.h"
 #include "src/compiler/opcodes.h"
-#include "src/compiler/simplified-operator.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 class Factory;
 
 
 namespace compiler {
 
 // Forward declarations.
 class CommonOperatorBuilder;
 class JSGraph;
 class JSOperatorBuilder;
 class MachineOperatorBuilder;
+class SimplifiedOperatorBuilder;
 
 
 // Lowers JS-level operators to simplified operators based on types.
 class JSTypedLowering final : public AdvancedReducer {
  public:
   JSTypedLowering(Editor* editor, JSGraph* jsgraph, Zone* zone);
   ~JSTypedLowering() final {}
 
   Reduction Reduce(Node* node) final;
 
@@ skipping 38 matching lines @@
                             const Operator* shift_op);
 
   Node* Word32Shl(Node* const lhs, int32_t const rhs);
 
   Factory* factory() const;
   Graph* graph() const;
   JSGraph* jsgraph() const { return jsgraph_; }
   Isolate* isolate() const;
   JSOperatorBuilder* javascript() const;
   CommonOperatorBuilder* common() const;
-  SimplifiedOperatorBuilder* simplified() { return &simplified_; }
+  SimplifiedOperatorBuilder* simplified() const;
   MachineOperatorBuilder* machine() const;
 
   // Limits up to which context allocations are inlined.
   static const int kFunctionContextAllocationLimit = 16;
   static const int kBlockContextAllocationLimit = 16;
 
   JSGraph* jsgraph_;
-  SimplifiedOperatorBuilder simplified_;
   Type* shifted_int32_ranges_[4];
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_JS_TYPED_LOWERING_H_