Separating transitions from descriptors.

src/handles.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 711 matching lines @@
 
     if (cache_result) {
       indices = isolate->factory()->NewFixedArray(num_enum);
       sort_array2 = isolate->factory()->NewFixedArray(num_enum);
     }
 
     Handle<DescriptorArray> descs =
         Handle<DescriptorArray>(object->map()->instance_descriptors(), isolate);
 
     for (int i = 0; i < descs->number_of_descriptors(); i++) {
-      if (descs->IsProperty(i) && !descs->GetDetails(i).IsDontEnum()) {
+      if (!descs->GetDetails(i).IsDontEnum()) {
         storage->set(index, descs->GetKey(i));
         PropertyDetails details = descs->GetDetails(i);
         sort_array->set(index, Smi::FromInt(details.index()));
         if (!indices.is_null()) {
           if (details.type() != FIELD) {
             indices = Handle<FixedArray>();
             sort_array2 = Handle<FixedArray>();
           } else {
             int field_index = Descriptor::IndexFromValue(descs->GetValue(i));
             if (field_index >= map->inobject_properties()) {
@@ skipping 250 matching lines @@
   data->next = prev_next_;
   data->limit = prev_limit_;
 #ifdef DEBUG
   handles_detached_ = true;
 #endif
   return deferred;
 }
 
 
 } }  // namespace v8::internal