[turbofan] Next step towards shared operators.

src/compiler/js-generic-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_GENERIC_LOWERING_H_
 #define V8_COMPILER_JS_GENERIC_LOWERING_H_
 
 #include "src/v8.h"
 
 #include "src/allocation.h"
@@ skipping 32 matching lines @@
 #undef DECLARE_LOWER
 
   // Helpers to create new constant nodes.
   Node* SmiConstant(int immediate);
   Node* Int32Constant(int immediate);
   Node* CodeConstant(Handle<Code> code);
   Node* FunctionConstant(Handle<JSFunction> function);
   Node* ExternalConstant(ExternalReference ref);
 
   // Helpers to patch existing nodes in the graph.
-  void PatchOperator(Node* node, Operator* new_op);
+  void PatchOperator(Node* node, const Operator* new_op);
   void PatchInsertInput(Node* node, int index, Node* input);
 
   // Helpers to replace existing nodes with a generic call.
   void ReplaceWithCompareIC(Node* node, Token::Value token, bool pure);
   void ReplaceWithStubCall(Node* node, HydrogenCodeStub* stub,
                            CallDescriptor::Flags flags);
   void ReplaceWithBuiltinCall(Node* node, Builtins::JavaScript id, int args);
   void ReplaceWithRuntimeCall(Node* node, Runtime::FunctionId f, int args = -1);
 
   Zone* zone() const { return graph()->zone(); }
@@ skipping 11 matching lines @@
   Linkage* linkage_;
   MachineOperatorBuilder* machine_;
   SetOncePointer<Node> centrystub_constant_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_JS_GENERIC_LOWERING_H_