https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94373
--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> --- (In reply to Hongtao.liu from comment #2) > I think > Change lea_cost from 2 --> 1 in skylake can fix this regressions. > > Since it's stage4 now, i hold my patch. Classify: it's for -O2 -mtune=skylake-avx512 not sure the what cause the regression for -O2 -mtune=generic.