[stubs] Consolidate TryToName implementation

src/builtins/builtins-object.cc

 // Copyright 2016 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/builtins/builtins.h"
 #include "src/builtins/builtins-utils.h"
 
 #include "src/code-factory.h"
 #include "src/property-descriptor.h"
 
@@ skipping 17 matching lines @@
 
   // Smi receivers do not have own properties.
   Label if_objectisnotsmi(assembler);
   assembler->Branch(assembler->WordIsSmi(object), &return_false,
                     &if_objectisnotsmi);
   assembler->Bind(&if_objectisnotsmi);
 
   Node* map = assembler->LoadMap(object);
   Node* instance_type = assembler->LoadMapInstanceType(map);
 
-  Variable var_index(assembler, MachineRepresentation::kWord32);
+  Variable var_index(assembler, MachineType::PointerRepresentation());
 
   Label keyisindex(assembler), if_iskeyunique(assembler);
   assembler->TryToName(key, &keyisindex, &var_index, &if_iskeyunique,
                        &call_runtime);
 
   assembler->Bind(&if_iskeyunique);
   assembler->TryHasOwnProperty(object, map, instance_type, key, &return_true,
                                &return_false, &call_runtime);
 
   assembler->Bind(&keyisindex);
@@ skipping 856 matching lines @@
   if (object->IsJSReceiver()) {
     MAYBE_RETURN(JSReceiver::SetIntegrityLevel(Handle<JSReceiver>::cast(object),
                                                SEALED, Object::THROW_ON_ERROR),
                  isolate->heap()->exception());
   }
   return *object;
 }
 
 }  // namespace internal
 }  // namespace v8