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Re: GCC testsuite timeout question (gcc.c-torture/compile/20001226-1.c)
- From: Eric Botcazou <ebotcazou at libertysurf dot fr>
- To: Steve Ellcey <sje at cup dot hp dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Wed, 31 Aug 2005 20:19:40 +0200
- Subject: Re: GCC testsuite timeout question (gcc.c-torture/compile/20001226-1.c)
- References: <200508311755.KAA07724@hpsje.cup.hp.com>
> Yes, I think you are right. I can see a substantial slowdown in
> compilation times on IA64 HP-UX at -O2 (though it doesn't time out
> there).
>
> gcc 4.0.0 - 81 seconds
> gcc 3.4.1 - 38 seconds
> gcc 3.4.0 - 37 seconds
> gcc 3.3.5 - 89 seconds
> gcc 3.3.1 - 91 seconds
>
> 3.3 is slow, 3.4 is faster, 4.0.0 seems slow agin, I don't have 4.0.*
> hanging around to test.
Thanks for the figures.
More generally, I think 3.4.x is overall faster than 3.3.x because someone
really competent (Jan Hubicka) sat down a few weeks before the release and
produced a series of patches only aimed at cutting down the memory
consumption and speeding up the compiler. So that's definitely doable,
albeit certainly hard.
--
Eric Botcazou