Map::TransitionElementsTo() extracted from JSObject::GetElementsTransitionMap().

src/objects.h

 // Copyright 2012 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include "allocation.h"
 #include "assert-scope.h"
 #include "builtins.h"
@@ skipping 2441 matching lines @@
   // (storage->length() == NumberOfEnumElements()).
   // If storage is NULL, will count the elements without adding
   // them to any storage.
   // Returns the number of enumerable elements.
   int GetEnumElementKeys(FixedArray* storage);
 
   // Returns a new map with all transitions dropped from the object's current
   // map and the ElementsKind set.
   static Handle<Map> GetElementsTransitionMap(Handle<JSObject> object,
                                               ElementsKind to_kind);
-  static Handle<Map> GetElementsTransitionMapSlow(Handle<JSObject> object,
-                                                  ElementsKind elements_kind);
-
   static void TransitionElementsKind(Handle<JSObject> object,
                                      ElementsKind to_kind);
 
   // TODO(mstarzinger): Both public because of ConvertAnsSetLocalProperty().
   static void MigrateToMap(Handle<JSObject> object, Handle<Map> new_map);
   static void GeneralizeFieldRepresentation(Handle<JSObject> object,
                                             int modify_index,
                                             Representation new_representation,
                                             Handle<HeapType> new_field_type,
                                             StoreMode store_mode);
@@ skipping 3832 matching lines @@
       Representation representation,
       TransitionFlag flag);
 
   MUST_USE_RESULT static MaybeHandle<Map> CopyWithConstant(
       Handle<Map> map,
       Handle<Name> name,
       Handle<Object> constant,
       PropertyAttributes attributes,
       TransitionFlag flag);
 
+  // Returns a new map with all transitions dropped from the given map and
+  // the ElementsKind set.
+  static Handle<Map> TransitionElementsTo(Handle<Map> map,
+                                          ElementsKind to_kind);
+
   static Handle<Map> AsElementsKind(Handle<Map> map, ElementsKind kind);
 
   static Handle<Map> CopyAsElementsKind(Handle<Map> map,
                                         ElementsKind kind,
                                         TransitionFlag flag);
 
   static Handle<Map> CopyForObserved(Handle<Map> map);
 
   static Handle<Map> CopyForFreeze(Handle<Map> map);
 
@@ skipping 241 matching lines @@
 
   static Handle<Map> CopyNormalized(Handle<Map> map,
                                     PropertyNormalizationMode mode,
                                     NormalizedMapSharingMode sharing);
 
   // Fires when the layout of an object with a leaf map changes.
   // This includes adding transitions to the leaf map or changing
   // the descriptor array.
   inline void NotifyLeafMapLayoutChange();
 
+  static Handle<Map> TransitionElementsToSlow(Handle<Map> object,
+                                              ElementsKind to_kind);
+
   // Zaps the contents of backing data structures. Note that the
   // heap verifier (i.e. VerifyMarkingVisitor) relies on zapping of objects
   // holding weak references when incremental marking is used, because it also
   // iterates over objects that are otherwise unreachable.
   // In general we only want to call these functions in release mode when
   // heap verification is turned on.
   void ZapPrototypeTransitions();
   void ZapTransitions();
 
   void DeprecateTransitionTree();
@@ skipping 4505 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_