https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54412
--- Comment #34 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- > It's unfortunate that the best and most common advice for using avx2 with > gcc/mingw is to use a patched compiler. Might it be possible to accept > Debian's patch upstream? Sure, but they need to submit it first, we cannot do it for them.