http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50310
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-09-07 11:08:09 UTC --- Created attachment 25219 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25219 gcc47-pr50310-avx.patch For -mavx apparently we have CPU support for LTGT and UNEQ (and loads of other possibilities). For -mno-avx we need to do something in ix86_expand_fp_vcond I guess.