Patch for faster memcpy on MIPS

[Steven Bosscher]

On Fri, Jan 4, 2013 at 11:41 AM, Steven Bosscher wrote:
> This at least builds and passes testing, see
> http://gcc.gnu.org/ml/gcc-testresults/2013-01/msg00282.html.

FWIW, all newlib FAILs (all UNRESOLVED cases) are due to:
*/ld/ld-new: cannot open linker script file idt64.ld: No such file or directory

> (Not sure why the newlib test results are repeated so many times...)

Ah, 16 multilib configurations -- but no indication of which one is
being tested. I'm not even sure if it really tested 16 different
configurations. Oh well...

Ciao!
Steven