Refacturing BuildEmitDeepCopy.

src/code-stubs-hydrogen.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 481 matching lines @@
 
   // Nothing to do, just change the map.
 
   if_builder.Else();
 
   HInstruction* elements = AddLoadElements(js_array);
 
   HInstruction* elements_length =
       AddInstruction(new(zone) HFixedArrayBaseLength(elements));
 
-  HValue* new_elements =
-      BuildAllocateAndInitializeElements(context(), to_kind, elements_length);
+  HValue* new_elements = BuildAllocateElementsAndInitializeElementsHeader(
+      context(), to_kind, elements_length);
 
   BuildCopyElements(context(), elements,
                     casted_stub()->from_kind(), new_elements,
                     to_kind, array_length, elements_length);
 
   AddStore(js_array, HObjectAccess::ForElementsPointer(), new_elements);
 
   if_builder.End();
 
   AddStore(js_array, HObjectAccess::ForMap(), map);
@@ skipping 156 matching lines @@
       ? graph()->GetConstant1()
       : graph()->GetConstantUndefined();
 }
 
 
 Handle<Code> CompareNilICStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 } }  // namespace v8::internal