[Bug target/49089] Regression on CFP2006 on Bulldozer From Splitting AVX 32-byte Unaligned Loads

[changpeng.fang at amd dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49089

--- Comment #1 from Changpeng Fang <changpeng.fang at amd dot com> 2011-05-20 
18:01:29 UTC ---
Apparently, this default option setting should only apply to systems that
splitting loads is bebeficial:

config/i386/i386.c(ix86_option_override_internal):

if (!(target_flags_explicit & MASK_AVX256_SPLIT_UNALIGNED_LOAD))
  target_flags |= MASK_AVX256_SPLIT_UNALIGNED_LOAD;