This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: 3.3 compile time regression (22400%)
- From: Richard Guenther <rguenth at tat dot physik dot uni-tuebingen dot de>
- To: Steven Bosscher <s dot bosscher at student dot tudelft dot nl>
- Cc: gcc at gcc dot gnu dot org
- Date: Tue, 18 Mar 2003 17:34:37 +0100 (CET)
- Subject: Re: 3.3 compile time regression (22400%)
On 18 Mar 2003, Steven Bosscher wrote:
> Op di 18-03-2003, om 13:13 schreef Richard Guenther:
> > Hi!
> >
> > I'm experiencing huge compile time regression with todays 3.3 compared to
> > 3.2 during compiling of the POOMA library. -ftime-report shows that the
> > culprit is expand:
> >
> > gcc-3.2:
> >
> > expand : 0.83 ( 8%) usr 0.04 ( 8%) sys 0.94 ( 9%) wall
> >
> > gcc-3.3:
> >
> > expand :2151.80 (96%) usr 11.35 (44%) sys2181.19 (95%) wall
> >
> > This is with -O2 -fomit-frame-pointer -funroll-loops -ftime-report
>
> Do you see this slowdown on the mainline too?
Yes, with mainline as of 20030313 I get
min-inline-insns time
100 8.16
150 10.81
200 12.51
250 291.96
-fno-default-inline 12.03
Richard.
--
Richard Guenther <richard dot guenther at uni-tuebingen dot de>
WWW: http://www.tat.physik.uni-tuebingen.de/~rguenth/