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Subject: [Bug middle-end/40979] induct benchmark 60% slower when compiled with -fgraphite-identity
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D40979

--- Comment #18 from sebpop at gmail dot com <sebpop at gmail dot com> 2011=
-02-01 17:22:06 UTC ---
On Tue, Feb 1, 2011 at 11:15, rguenth at gcc dot gnu.org
<gcc-bugzilla@gcc.gnu.org> wrote:
> I'd suggest
>
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0NEXT_PASS (pass_graphite);
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0{
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0struct opt_pass **p =3D &=
pass_graphite.pass.sub;
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0NEXT_PASS (pass_graphite_=
transforms);
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0NEXT_PASS (pass_lim);
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0NEXT_PASS (pass_copy_prop=
);
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0NEXT_PASS (pass_dce_loop);
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0}
>

That made the loop vectorizable.
Thanks Richi!