Remove elements transitions from the transition array.

src/transitions-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 39 matching lines @@
     }                                                                   \
   }
 
 
 TransitionArray* TransitionArray::cast(Object* object) {
   ASSERT(object->IsTransitionArray());
   return reinterpret_cast<TransitionArray*>(object);
 }
 
 
-Map* TransitionArray::elements_transition() {
-  Object* transition_map = get(kElementsTransitionIndex);
-  return Map::cast(transition_map);
-}
-
-
-void TransitionArray::ClearElementsTransition() {
-  WRITE_FIELD(this, kElementsTransitionOffset, Smi::FromInt(0));
-}
-
-
 bool TransitionArray::HasElementsTransition() {
-  return IsFullTransitionArray() &&
-      get(kElementsTransitionIndex) != Smi::FromInt(0);
+  return kNotFound != Search(GetHeap()->elements_transition_symbol());

[titzer, 2013/07/31 13:55:46]

Yoda condition

[Toon Verwaest, 2013/07/31 15:05:23]

Done.

 }
 
 
-void TransitionArray::set_elements_transition(Map* transition_map,
-                                              WriteBarrierMode mode) {
-  ASSERT(IsFullTransitionArray());
-  Heap* heap = GetHeap();
-  WRITE_FIELD(this, kElementsTransitionOffset, transition_map);
-  CONDITIONAL_WRITE_BARRIER(
-      heap, this, kElementsTransitionOffset, transition_map, mode);
-}
-
-
 Object* TransitionArray::back_pointer_storage() {
   return get(kBackPointerStorageIndex);
 }
 
 
 void TransitionArray::set_back_pointer_storage(Object* back_pointer,
                                                WriteBarrierMode mode) {
   Heap* heap = GetHeap();
   WRITE_FIELD(this, kBackPointerStorageOffset, back_pointer);
   CONDITIONAL_WRITE_BARRIER(
@@ skipping 114 matching lines @@
 
 
 #undef FIELD_ADDR
 #undef WRITE_FIELD
 #undef CONDITIONAL_WRITE_BARRIER
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TRANSITIONS_INL_H_