https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89021
--- Comment #49 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #48)
> (In reply to H.J. Lu from comment #4)
> > That sounds right. We can even vectorize
> >
> > void
> > foo (char* restrict r, char* restrict a){
> > for (int i = 0; i < 8; i++){
> > r[i] += a[i];
> > }
> > }
>
> This loop is still not vectorized:
>
> pr89021.c:3:5: missed: not vectorized: iteration count smaller than
> vectorization factor.
> pr89021.c:3:5: missed: Loop costings not worthwhile.
> pr89021.c:3:5: missed: couldn't vectorize loop
> pr89021.c:3:5: missed: Loop costings not worthwhile.
> pr89021.c:2:1: note: vectorized 0 loops in function.
To enable V2SF vectorizer, we need to add V2SF patterns with SSE.
