https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88547
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
For 64-byte vectors, we emit
vpcmpgtb %zmm1, %zmm0, %k1
vpxor %xmm1, %xmm1, %xmm1
vpternlogd $0xFF, %zmm0, %zmm0, %zmm0
vmovdqu8 %zmm1, %zmm0{%k1}
for f1, perhaps it would be better to emit:
vpcmpgtb %zmm1, %zmm0, %k1
knotq %k1, %k1
vpmovm2b %k1, %zmm0
?
