Merge bleeding edge into the GC branch up to 7948. The asserts

test/cctest/test-disasm-mips.cc

 // 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 412 matching lines @@
           "7c62f804       ins     v0, v1, 0, 32");
   COMPARE(ext_(a0, a1, 31, 1),
           "7ca407c0       ext     a0, a1, 31, 1");
   COMPARE(ext_(s6, s7, 30, 2),
           "7ef60f80       ext     s6, s7, 30, 2");
   COMPARE(ext_(v0, v1, 0, 32),
           "7c62f800       ext     v0, v1, 0, 32");
 
   VERIFY_RUN();
 }