Removed transitions from the accessor pair descriptors.

src/transitions.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 33 matching lines @@
 // [0] Elements transition
 // [1] First transition
 // [length() - kTransitionSize] Last transition
 class TransitionArray: public FixedArray {
  public:
   // Accessors for fetching instance transition at transition number.
   inline String* GetKey(int transition_number);
   inline void SetKey(int transition_number, String* value);
   inline Object** GetKeySlot(int transition_number);
 
-  inline Object* GetValue(int transition_number);
-  inline void SetValue(int transition_number, Object* value);
-  inline Object** GetValueSlot(int transition_number);
+  inline Map* GetTarget(int transition_number);
+  inline void SetTarget(int transition_number, Map* target);
+  inline Object** GetTargetSlot(int transition_number);
 
-  inline Map* GetTargetMap(int transition_number);
   inline PropertyDetails GetTargetDetails(int transition_number);
 
   inline Map* elements_transition();
   inline void set_elements_transition(
-      Map* value,
+      Map* target,
       WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
   inline Object** GetElementsTransitionSlot();
   inline bool HasElementsTransition();
   inline void ClearElementsTransition();
 
   inline FixedArray* GetPrototypeTransitions();
   inline void SetPrototypeTransitions(
       FixedArray* prototype_transitions,
       WriteBarrierMode mode = UPDATE_WRITE_BARRIER);
   inline Object** GetPrototypeTransitionsSlot();
   inline bool HasPrototypeTransitions();
   inline HeapObject* UncheckedPrototypeTransitions();
 
   // Returns the number of transitions in the array.
   int number_of_transitions() {
     ASSERT(length() >= kFirstIndex);
     int len = length();
     return len <= kFirstIndex ? 0 : (len - kFirstIndex) / kTransitionSize;
   }
 
   inline int number_of_entries() { return number_of_transitions(); }
 
   // Allocate a new transition array with a single entry.
-  static MUST_USE_RESULT MaybeObject* NewWith(String* name, Object* map);
+  static MUST_USE_RESULT MaybeObject* NewWith(String* name, Map* target);
 
   // Copy the transition array, inserting a new transition.
   // TODO(verwaest): This should not cause an existing transition to be
   // overwritten.
-  MUST_USE_RESULT MaybeObject* CopyInsert(String* name, Object* map);
+  MUST_USE_RESULT MaybeObject* CopyInsert(String* name, Map* target);
 
   // Copy a single transition from the origin array.
   inline void CopyFrom(TransitionArray* origin,
                        int origin_transition,
                        int target_transition,
                        const WhitenessWitness& witness);
 
   // Search a transition for a given property name.
   inline int Search(String* name);
 
@@ skipping 11 matching lines @@
   static const int kFirstIndex = 2;
 
   // Layout transition array header.
   static const int kElementsTransitionOffset = FixedArray::kHeaderSize;
   static const int kPrototypeTransitionsOffset = kElementsTransitionOffset +
                                                  kPointerSize;
   static const int kFirstOffset = kPrototypeTransitionsOffset + kPointerSize;
 
   // Layout of map transition.
   static const int kTransitionKey = 0;
-  static const int kTransitionValue = 1;
+  static const int kTransitionTarget = 1;
   static const int kTransitionSize = 2;
 
 #ifdef OBJECT_PRINT
   // Print all the transitions.
   inline void PrintTransitions() {
     PrintTransitions(stdout);
   }
   void PrintTransitions(FILE* out);
 #endif
 
 #ifdef DEBUG
   bool IsSortedNoDuplicates();
   bool IsConsistentWithBackPointers(Map* current_map);
   bool IsEqualTo(TransitionArray* other);
 #endif
 
   // The maximum number of transitions we want in a transition array (should
   // fit in a page).
   static const int kMaxNumberOfTransitions = 1024 + 512;
 
  private:
   // Conversion from transition number to array indices.
   static int ToKeyIndex(int transition_number) {
     return kFirstIndex +
            (transition_number * kTransitionSize) +
            kTransitionKey;
   }
 
-  static int ToValueIndex(int transition_number) {
+  static int ToTargetIndex(int transition_number) {
     return kFirstIndex +
            (transition_number * kTransitionSize) +
-           kTransitionValue;
+           kTransitionTarget;
   }
 
   inline void Set(int transition_number,
                   String* key,
-                  Object* value,
+                  Map* target,
                   const WhitenessWitness&);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(TransitionArray);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TRANSITIONS_H_