Removed transitions from the accessor pair descriptors.

src/mark-compact.cc

 // 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 1893 matching lines @@
                                          value);
 
     PropertyDetails details(descriptors->GetDetails(i));
 
     switch (details.type()) {
       case NORMAL:
       case FIELD:
       case CONSTANT_FUNCTION:
       case HANDLER:
       case INTERCEPTOR:
+      case CALLBACKS:
         base_marker()->MarkObjectAndPush(value);
         break;
-      case CALLBACKS:
-        if (!value->IsAccessorPair()) {
-          base_marker()->MarkObjectAndPush(value);
-        } else if (base_marker()->MarkObjectWithoutPush(value)) {
-          AccessorPair* accessors = AccessorPair::cast(value);
-          MarkAccessorPairSlot(accessors, AccessorPair::kGetterOffset);
-          MarkAccessorPairSlot(accessors, AccessorPair::kSetterOffset);
-        }
-        break;
       case TRANSITION:
       case NONEXISTENT:
         UNREACHABLE();
         break;
     }
   }
 }
 
 template <class T>
 void Marker<T>::MarkTransitionArray(TransitionArray* transitions) {
@@ skipping 18 matching lines @@
         transitions_start, proto_trans_slot, prototype_transitions);
   }
 
   for (int i = 0; i < transitions->number_of_transitions(); ++i) {
     Object** key_slot = transitions->GetKeySlot(i);
     Object* key = *key_slot;
     if (key->IsHeapObject()) {
       base_marker()->MarkObjectAndPush(HeapObject::cast(key));
       mark_compact_collector()->RecordSlot(transitions_start, key_slot, key);
     }
-
-    Object** value_slot = transitions->GetValueSlot(i);
-    if (!(*value_slot)->IsHeapObject()) continue;
-    HeapObject* value = HeapObject::cast(*value_slot);
-
-    if (value->IsAccessorPair()) {
-      mark_compact_collector()->RecordSlot(transitions_start,
-                                           value_slot,
-                                           value);
-
-      base_marker()->MarkObjectWithoutPush(value);
-      AccessorPair* accessors = AccessorPair::cast(value);
-      MarkAccessorPairSlot(accessors, AccessorPair::kGetterOffset);
-      MarkAccessorPairSlot(accessors, AccessorPair::kSetterOffset);
-    }
   }
 }
 
 
 template <class T>
 void Marker<T>::MarkAccessorPairSlot(AccessorPair* accessors, int offset) {
   Object** slot = HeapObject::RawField(accessors, offset);
   HeapObject* accessor = HeapObject::cast(*slot);
   if (accessor->IsMap()) return;
   mark_compact_collector()->RecordSlot(slot, slot, accessor);
@@ skipping 2168 matching lines @@
   while (buffer != NULL) {
     SlotsBuffer* next_buffer = buffer->next();
     DeallocateBuffer(buffer);
     buffer = next_buffer;
   }
   *buffer_address = NULL;
 }
 
 
 } }  // namespace v8::internal