https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101639
--- Comment #22 from Hongtao Liu <liuhongt at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #21)
> (In reply to Hongtao Liu from comment #20)
> > (In reply to Hongtao Liu from comment #19)
> > > Created attachment 62562 [details]
> > > avx512/avx2 reduc_mask_{and,ixor,xor}_m
> > >
> > > I didn't support V*HImode for reduc_mask_xor_m since x86 only has
> > > vmovmskps/pd and vpmovmskb. for others, unit test looks ok and I'm going
> > > to
> > > have more test for that.
> >
> > It failed bootstrap in stage3 with --with-arch=native on SPR, need to take a
> > look.
>
> It might very well be a bug on the vectorizer side of course.
should be related to reduc_mask_and, the mask needs to be compared to
allones(-1), no zero since any zero bit will cause the result to be zero.
