3427   Handle<Map> root_map(old_map->FindRootMap(), isolate);  in ReconfigureProperty()  local
3428   if (!old_map->EquivalentToForTransition(*root_map)) {  in ReconfigureProperty()
3434   ElementsKind from_kind = root_map->elements_kind();  in ReconfigureProperty()
3445   int root_nof = root_map->NumberOfOwnDescriptors();  in ReconfigureProperty()
3466     root_map = Map::AsElementsKind(root_map, to_kind);  in ReconfigureProperty()
3469   Handle<Map> target_map = root_map;  in ReconfigureProperty()
3813   Handle<Map> split_map(root_map->FindLastMatchMap(  in ReconfigureProperty()
3909   Map* root_map = old_map->FindRootMap();  in TryUpdate()  local
3910   if (!old_map->EquivalentToForTransition(root_map)) return MaybeHandle<Map>();  in TryUpdate()
3912   ElementsKind from_kind = root_map->elements_kind();  in TryUpdate()
3916     root_map = root_map->LookupElementsTransitionMap(to_kind);  in TryUpdate()
3917     if (root_map == NULL) return MaybeHandle<Map>();  in TryUpdate()
3920   int root_nof = root_map->NumberOfOwnDescriptors();  in TryUpdate()
3925   Map* new_map = root_map;  in TryUpdate()