Allocate as many object-literal properties as possible inobject....

src/factory.h

 // 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 139 matching lines @@
 
   static Handle<ByteArray> NewByteArray(int length,
                                         PretenureFlag pretenure = NOT_TENURED);
 
   static Handle<Map> NewMap(InstanceType type, int instance_size);
 
   static Handle<JSObject> NewFunctionPrototype(Handle<JSFunction> function);
 
   static Handle<Map> CopyMap(Handle<Map> map);
 
+  // Copy the map adding more inobject properties if possible without
+  // overflowing the instance size.
+  static Handle<Map> CopyMap(Handle<Map> map, int extra_inobject_props);
+
   static Handle<Map> CopyMapDropTransitions(Handle<Map> map);
 
   static Handle<FixedArray> CopyFixedArray(Handle<FixedArray> array);
 
   // Numbers (eg, literals) are pretenured by the parser.
   static Handle<Object> NewNumber(double value,
                                   PretenureFlag pretenure = NOT_TENURED);
 
   static Handle<Object> NewNumberFromInt(int value);
 
   // These objects are used by the api to create env-independent data
   // structures in the heap.
   static Handle<JSObject> NewNeanderObject();
 
   static Handle<JSObject> NewArgumentsObject(Handle<Object> callee, int length);
 
   // JS objects are pretenured when allocated by the bootstrapper and
   // runtime.
   static Handle<JSObject> NewJSObject(Handle<JSFunction> constructor,
                                       PretenureFlag pretenure = NOT_TENURED);
 
   // JS objects are pretenured when allocated by the bootstrapper and
   // runtime.
   static Handle<JSObject> NewJSObjectFromMap(Handle<Map> map);
 
-  // Allocate a JS object representing an object literal.  The object is
-  // pretenured (allocated directly in the old generation).
-  static Handle<JSObject> NewObjectLiteral(int expected_number_of_properties);
-
   // Allocate a JS array representing an array literal.  The array is
   // pretenured (allocated directly in the old generation).
   static Handle<JSArray> NewArrayLiteral(int length);
 
   // JS arrays are pretenured when allocated by the parser.
   static Handle<JSArray> NewJSArray(int init_length,
                                     PretenureFlag pretenure = NOT_TENURED);
 
   static Handle<JSArray> NewJSArrayWithElements(
       Handle<FixedArray> elements,
@@ skipping 149 matching lines @@
   // Update the map cache in the global context with (keys, map)
   static Handle<MapCache> AddToMapCache(Handle<Context> context,
                                         Handle<FixedArray> keys,
                                         Handle<Map> map);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FACTORY_H_