Partial recover from performance degradation after handlification of ElementsAccessor::CopyElements…

src/objects.cc

 // Copyright 2013 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 11175 matching lines @@
     }
   } else {
     if (IsHoleyElementsKind(elements_kind)) {
       new_elements_kind = FAST_HOLEY_ELEMENTS;
     } else {
       new_elements_kind = FAST_ELEMENTS;
     }
   }
   Handle<FixedArrayBase> old_elements(object->elements());
   ElementsAccessor* accessor = ElementsAccessor::ForKind(new_elements_kind);
-  accessor->CopyElements(object, new_elements, elements_kind);
+  accessor->CopyElements(*object, new_elements, elements_kind);
 
   if (elements_kind != SLOPPY_ARGUMENTS_ELEMENTS) {
     Handle<Map> new_map = (new_elements_kind != elements_kind)
         ? GetElementsTransitionMap(object, new_elements_kind)
         : handle(object->map());
     object->ValidateElements();
     JSObject::SetMapAndElements(object, new_map, new_elements);
 
     // Transition through the allocation site as well if present.
     JSObject::UpdateAllocationSite(object, new_elements_kind);
@@ skipping 29 matching lines @@
   if (IsHoleyElementsKind(elements_kind)) {
     new_elements_kind = FAST_HOLEY_DOUBLE_ELEMENTS;
   } else {
     new_elements_kind = FAST_DOUBLE_ELEMENTS;
   }
 
   Handle<Map> new_map = GetElementsTransitionMap(object, new_elements_kind);
 
   Handle<FixedArrayBase> old_elements(object->elements());
   ElementsAccessor* accessor = ElementsAccessor::ForKind(FAST_DOUBLE_ELEMENTS);
-  accessor->CopyElements(object, elems, elements_kind);
+  accessor->CopyElements(*object, elems, elements_kind);
 
   object->ValidateElements();
   JSObject::SetMapAndElements(object, new_map, elems);
 
   if (FLAG_trace_elements_transitions) {
     PrintElementsTransition(stdout, object, elements_kind, old_elements,
                             object->GetElementsKind(), elems);
   }
 
   if (object->IsJSArray()) {
@@ skipping 5198 matching lines @@
 #define ERROR_MESSAGES_TEXTS(C, T) T,
   static const char* error_messages_[] = {
       ERROR_MESSAGES_LIST(ERROR_MESSAGES_TEXTS)
   };
 #undef ERROR_MESSAGES_TEXTS
   return error_messages_[reason];
 }
 
 
 } }  // namespace v8::internal