mesa: Drop -fno-builtin-memcmp.

According to the referenced bug report, gcc-4.5 and newer do not inline
memcmp(). I see no difference in performance of ipers with llvmpipe on a
Sandybridge (which does not have "Enhanced REP MOVSB/STOSB") by removing
this flag.

I attempted to confirm the problem with gcc-4.4, but it fails to compile
for quite a few different reasons.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
1 file changed