Merge 6168:6800 from bleeding_edge to experimental/gc branch.

test/mjsunit/compiler/regress-1085.js

 // Copyright 2011 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 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
 // Test correct checks for negative zero.
 // This test relies on specific type feedback for Math.min.
 function f(x) { return 1 / Math.min(1, x); }
 
 for (var i=0; i<1000000; i++) f(1);
 
 assertEquals(-Infinity, f(-0));