https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78379
--- Comment #5 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> --- (In reply to Uroš Bizjak from comment #4) > (In reply to Jerry DeLisle from comment #3) > > I did apply your second patch: > > > > I do not get any improvement and results are diminished from current trunk, > > so I am missing something. This is same machine I used showing results in > > 51119. It does have avx. > > You have AMD processor, can you try with -mprefer-avx128 option? You may notice I was invoking the wrong executable in what I posted in comment #3. I did rerun the correct one several times and tried it with -mavx -mprefer-avx128. I get the same poor results regardless.
