Optimize the allocation of small, non-nested literal...

bleeding_edge/src/heap.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 473 matching lines @@
   // Allocates a function initialized with a shared part.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   static Object* AllocateFunction(Map* function_map,
                                   SharedFunctionInfo* shared,
                                   Object* prototype,
                                   PretenureFlag pretenure = TENURED);
 
   // Indicies for direct access into argument objects.
+  static const int kArgumentsObjectSize =
+      JSObject::kHeaderSize + 2 * kPointerSize;
   static const int arguments_callee_index = 0;
   static const int arguments_length_index = 1;
 
   // Allocates an arguments object - optionally with an elements array.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   static Object* AllocateArgumentsObject(Object* callee, int length);
 
   // Converts a double into either a Smi or a HeapNumber object.
@@ skipping 1172 matching lines @@
 
   // To speed up scavenge collections new space string are kept
   // separate from old space strings.
   static List<Object*> new_space_strings_;
   static List<Object*> old_space_strings_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_