[Bug rtl-optimization/56511] memcpy misses chance to use AVX instructions

[jyasskin at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56511

--- Comment #1 from Jeffrey Yasskin <jyasskin at gcc dot gnu.org> 2013-03-03 06:19:57 UTC ---
LLVM catches this optimization.