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Re: 3.3 compile time regression (22400%)

From: Steven Bosscher <s dot bosscher at student dot tudelft dot nl>
To: Richard Guenther <rguenth at tat dot physik dot uni-tuebingen dot de>
Cc: gcc at gcc dot gnu dot org
Date: 22 Mar 2003 14:24:00 +0100
Subject: Re: 3.3 compile time regression (22400%)
References: <Pine.LNX.4.44.0303181300580.22005-100000@bellatrix.tat.physik.uni-tuebingen.de>

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

PR 2692 is another example of excesive "expand" time.  If you or
somebody has a profiling compiler, it may be worth to investigate that
PR as well.

Greetz
Steven

References:
- 3.3 compile time regression (22400%)
  - From: Richard Guenther

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