Go into slow case when encountering object initialization on the top level to...

src/runtime.cc

 // Copyright 2006-2008 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 2133 matching lines @@
 
   // Handle special arguments properties.
   if (key->Equals(Heap::length_symbol())) return Smi::FromInt(n);
   if (key->Equals(Heap::callee_symbol())) return frame->function();
 
   // Lookup in the initial Object.prototype object.
   return Top::initial_object_prototype()->GetProperty(*key);
 }
 
 
+static Object* Runtime_ToFastProperties(Arguments args) {
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_CHECKED(JSObject, object, 0);
+  object->TransformToFastProperties(0);
+  return *object;
+}
+
+
+static Object* Runtime_ToSlowProperties(Arguments args) {
+  ASSERT(args.length() == 1);
+  CONVERT_ARG_CHECKED(JSObject, object, 0);
+  object->NormalizeProperties(CLEAR_INOBJECT_PROPERTIES);
+  return *object;
+}
+
+
 static Object* Runtime_ToBool(Arguments args) {
   NoHandleAllocation ha;
   ASSERT(args.length() == 1);
 
   return args[0]->ToBoolean();
 }
 
 
 // Returns the type string of a value; see ECMA-262, 11.4.3 (p 47).
 // Possible optimizations: put the type string into the oddballs.
@@ skipping 3932 matching lines @@
   } else {
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     Counters::gc_last_resort_from_js.Increment();
     Heap::CollectAllGarbage();
   }
 }
 
 
 } }  // namespace v8::internal