https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102494
--- Comment #5 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Hongtao.liu from comment #4)
> >
> > But for the case in PR, it's v8qi -> 2 v4hi, and no vector reduction for
> > v4hi.
>
> We need add (define_expand "reduc_plus_scal_v4hi" just like (define_expand
> "reduc_plus_scal_v8qi" in mmx.md.
Also for reduc_{umax,umin,smax,smin}_scal_v4hi
