[turbofan] Make Node::set_op safer via wrapper.

src/compiler/tail-call-optimization.cc

 // Copyright 2015 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/tail-call-optimization.h"
 
 #include "src/compiler/common-operator.h"
 #include "src/compiler/graph.h"
 #include "src/compiler/linkage.h"
 #include "src/compiler/node-properties.h"
@@ skipping 45 matching lines @@
       //   |          |      |       |
       //   |          +--+ +-+       |
       //   +----------+  | |  +------+
       //               \ | | /
       //           TailCall[Descriptor]
       //                 ^
       //                 |
 
       DCHECK_EQ(call, NodeProperties::GetControlInput(control, 0));
       DCHECK_EQ(3, node->InputCount());
-      node->set_op(
-          common()->TailCall(OpParameter<CallDescriptor const*>(call)));
       node->ReplaceInput(0, NodeProperties::GetEffectInput(call));
       node->ReplaceInput(1, NodeProperties::GetControlInput(call));
       node->RemoveInput(2);
       for (int index = 0; index < call->op()->ValueInputCount(); ++index) {
         node->InsertInput(graph()->zone(), index,
                           NodeProperties::GetValueInput(call, index));
       }
+      NodeProperties::ChangeOp(
+          node, common()->TailCall(OpParameter<CallDescriptor const*>(call)));
       return Changed(node);
     }
   }
   return NoChange();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8