https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98399
--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> --- (In reply to Hongtao.liu from comment #2) > It's the problem of veclower > The root cause is missing expander of vashrv16qi, although x86 don't have vector int8 shift instruction, it can be emulated by vector int16 shift.