Fwd: 10% runtime regression in rnflow Polyhedron benchmark

[Sergey Ostanevich]

---------- Forwarded message ----------
From: Sergey Ostanevich <sergos.gnu@gmail.com>
Date: Wed, Sep 26, 2012 at 4:55 PM
Subject: Re: 10% runtime regression in rnflow Polyhedron benchmark
To: Dominique Dhumieres <dominiq@lps.ens.fr>


On Mon, Sep 17, 2012 at 1:18 PM, Dominique Dhumieres <dominiq@lps.ens.fr> wrote:
> Hi Uros,
>
>> Recent patch introduced 10% runtime regression on x86_64 targets in
>> rnflow Polyhedron benchmark [1]. Did somebody alread bisected to the
>> offending patch?
>
> I see it since some time. It is on my TODO list to open a new PR.
> You can suppress the slowdown with -fno-tree-loop-if-convert.
>
> I think I have already done the bissection, but right now I am
> chasing another problem and I'll need a couple hours to get to
> it.
>

commit 024fee2c369096e6fe6cde620243df5843893004
Author: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Thu Sep 13 12:43:58 2012 +0000


PR54717 filed

regards,
Sergos