[turbofan] Next step towards shared operators.

src/compiler/js-generic-lowering.cc

 // 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.
 
 #include "src/code-stubs.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph-inl.h"
 #include "src/compiler/js-generic-lowering.h"
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/node-aux-data-inl.h"
@@ skipping 102 matching lines @@
 
 
 JSGenericLowering::JSGenericLowering(CompilationInfo* info, JSGraph* jsgraph,
                                      MachineOperatorBuilder* machine)
     : info_(info),
       jsgraph_(jsgraph),
       linkage_(new (jsgraph->zone()) Linkage(info)),
       machine_(machine) {}
 
 
-void JSGenericLowering::PatchOperator(Node* node, Operator* op) {
+void JSGenericLowering::PatchOperator(Node* node, const Operator* op) {
   node->set_op(op);
 }
 
 
 void JSGenericLowering::PatchInsertInput(Node* node, int index, Node* input) {
   node->InsertInput(zone(), index, input);
 }
 
 
 Node* JSGenericLowering::SmiConstant(int32_t immediate) {
@@ skipping 394 matching lines @@
 Node* JSGenericLowering::LowerJSCallRuntime(Node* node) {
   Runtime::FunctionId function = OpParameter<Runtime::FunctionId>(node);
   int arity = OperatorProperties::GetValueInputCount(node->op());
   ReplaceWithRuntimeCall(node, function, arity);
   return node;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8