Merge r9145 from the bleeding_edge to the 3.4 branch.

test/mjsunit/regress/regress-94425.js

 // Copyright 2010 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 26 matching lines @@
 // arr is in the large object space now.
 // Write new space object into it.
 arr[arr.length - 2] = new Object;
 
 // Shift array multiple times to ensure that young
 // object crosses region boundary.
 for (var i = 0; i < 9; i++) arr.shift();
 
 // Do a GC to verify region dirty marks.
 gc();