[Bug tree-optimization/18557] Inefficient code generated by -ftree-vectorize on Alpha

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-19 14:21 -------
(In reply to comment #2)
> Subject: Re:  Inefficient code generated by
>         -ftree-vectorize on Alpha
> On Fri, 2004-11-19 at 00:04 +0000, pinskia at gcc dot gnu dot org wrote:
> > ------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-19 00:04 -------
> > Confirmed.
> > One issue is that we don't fold stuff:
> >   D.1061 = 8 - 1;
> >   D.1065 = 2 - 1;
> 
> We correctly rely on CCP to clean it up :)
> 
> Having every single pass fold every statement it generates isn't
> necessarily a win when CCP will do it for you :)

This is how the vectorizer produced the statement in the first place.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18557