https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110788
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Hongtao.liu from comment #1)
> I prefer to add an UNSPEC to vpbroadcastm, don't want to mix gpr and kmask
> too much for vec_duplicate:zero_extend pattern.
And got this:
.L3:
vmovapd b(%rax), %ymm1{%k1}
movl %edx, %esi
subl $4, %edx
movzwl %dx, %ecx
vmulpd %ymm3, %ymm1, %ymm0{%k1}{z}
vmovapd %ymm0, a(%rax){%k1}
vpbroadcastd %ecx, %xmm0
addq $32, %rax
vpcmpud $6, %xmm2, %xmm0, %k1
cmpw $4, %si
ja .L3
vzeroupper
