https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82735
--- Comment #13 from Marcin Ślusarz <marcin.slusarz at intel dot com> --- FTR, to reproduce this problem with gcc 9 and 10 I had to either replace -mavx with -march=native or add -mtune=native. The problem starts reproducing with -march=haswell.
