Adding GetMoreGeneralElementsKind in elements-kind.h

src/lookup.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/lookup.h"
 
 #include "src/bootstrapper.h"
 #include "src/deoptimizer.h"
 #include "src/isolate-inl.h"
 #include "src/lookup-inl.h"
@@ skipping 116 matching lines @@
 void LookupIterator::PrepareForDataProperty(Handle<Object> value) {
   DCHECK(state_ == DATA || state_ == ACCESSOR);
   DCHECK(HolderIsReceiverOrHiddenPrototype());
 
   Handle<JSObject> holder = GetHolder<JSObject>();
 
   if (IsElement()) {
     ElementsKind kind = holder_map_->elements_kind();
     ElementsKind to = value->OptimalElementsKind();
     if (IsHoleyElementsKind(kind)) to = GetHoleyElementsKind(to);
-    to = IsMoreGeneralElementsKindTransition(kind, to) ? to : kind;
+    to = GetMoreGeneralElementsKind(kind, to);
     JSObject::TransitionElementsKind(holder, to);
     holder_map_ = handle(holder->map(), isolate_);
 
     // Copy the backing store if it is copy-on-write.
     if (IsFastSmiOrObjectElementsKind(to)) {
       JSObject::EnsureWritableFastElements(holder);
     }
 
   } else {
     if (holder_map_->is_dictionary_map()) return;
@@ skipping 395 matching lines @@
       case InterceptorState::kSkipNonMasking:
         return true;
       case InterceptorState::kProcessNonMasking:
         return false;
     }
   }
   return interceptor_state_ == InterceptorState::kProcessNonMasking;
 }
 }  // namespace internal
 }  // namespace v8