[turbofan] Next step towards shared operators.

src/compiler/js-inlining.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/compiler/ast-graph-builder.h"
 #include "src/compiler/common-operator.h"
 #include "src/compiler/generic-node-inl.h"
 #include "src/compiler/graph-inl.h"
 #include "src/compiler/graph-visualizer.h"
 #include "src/compiler/js-inlining.h"
@@ skipping 102 matching lines @@
 
   Node* final_merge = NodeProperties::GetControlInput(graph->end(), 0);
   if (final_merge->opcode() == IrOpcode::kReturn) {
     // nothing to do
     return;
   }
   DCHECK_EQ(IrOpcode::kMerge, final_merge->opcode());
 
   int predecessors =
       OperatorProperties::GetControlInputCount(final_merge->op());
-  Operator* op_phi = jsgraph_->common()->Phi(kMachAnyTagged, predecessors);
-  Operator* op_ephi = jsgraph_->common()->EffectPhi(predecessors);
+  const Operator* op_phi =
+      jsgraph_->common()->Phi(kMachAnyTagged, predecessors);
+  const Operator* op_ephi = jsgraph_->common()->EffectPhi(predecessors);
 
   NodeVector values(jsgraph_->zone());
   NodeVector effects(jsgraph_->zone());
   // Iterate over all control flow predecessors,
   // which must be return statements.
   InputIter iter = final_merge->inputs().begin();
   while (iter != final_merge->inputs().end()) {
     Node* input = *iter;
     switch (input->opcode()) {
       case IrOpcode::kReturn:
@@ skipping 152 matching lines @@
 
   Inlinee inlinee(&jsgraph);
   inlinee.UnifyReturn();
   inlinee.InlineAtCall(jsgraph_, node);
 
   jsgraph_->graph()->SetNextNodeId(inlinee.graph()->NextNodeID());
 }
 }
 }
 }  // namespace v8::internal::compiler