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Re: performance bug or known gcc-3.2 limit?
- From: Gerald Pfeifer <pfeifer at dbai dot tuwien dot ac dot at>
- To: Robert Schiele <rschiele at uni-mannheim dot de>
- Cc: gcc at gcc dot gnu dot org
- Date: Wed, 17 Jul 2002 18:24:59 +0200 (CEST)
- Subject: Re: performance bug or known gcc-3.2 limit?
On Fri, 12 Jul 2002, Robert Schiele wrote:
> When compiling a program with a real huge switch statement, current
> head revision takes almost infinite time.
If you haven't done so, please submit this via our bug tracking system
(http://gcc.gnu.org) and drop me a note with the number of the problem
report.
> i486-suse-linux (AMD Athlon(tm) XP 1800+):
> gcc-2.95.3: 0m0.520s
> gcc-3.1: 0m5.210s
> gcc-3.2: stopped after 30 Minutes
>
> sparc-suse-linux (Ultra 10):
> gcc-2.95.3: 0m2.370s
> gcc-3.1: 0m12.100s
> gcc-3.2: stopped after 30 Minutes
>
> sparc-sun-solaris2.9 (Ultra 5):
> gcc-2.95.3: 0m2.130s
> gcc-3.1: 0m13.690s
> gcc-3.2: stopped after 30 Minutes
As this is a clear regression from previous versions of GCC, I will then
raise its priority.
Gerald
--
Gerald "Jerry" pfeifer@dbai.tuwien.ac.at http://www.dbai.tuwien.ac.at/~pfeifer/