From: Paolo Bonzini <bonzini@gnu.org>
To: Karel Gardas <kgardas@objectsecurity.com>
Cc: Steven Bosscher <stevenb@suse.de>, GCC Mailing List <gcc@gcc.gnu.org>
Subject: Re: Compilation performance comparison of gcc3.4.1 and gcc3.5.0 2004-08-30 on MICO sources
Date: Wed, 01 Sep 2004 07:18:00 -0000 [thread overview]
Message-ID: <413578D7.5040909@gnu.org> (raw)
In-Reply-To: <Pine.LNX.4.43.0408311251230.1006-100000@thinkpad.gardas.net>
3.4.1 seems to have a problem with the expander at -O2:
> expand : 8.79 (26%) usr 0.01 ( 0%) sys 8.90 (24%) wall
So this 3.4.1 bug is somehow work around by gimplification and tree
optimization, and this masks the 40% difference (which would still be
there at -O2 if it weren't for the improvement in expander time).
Paolo
next prev parent reply other threads:[~2004-09-01 7:18 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-31 9:58 Karel Gardas
2004-08-31 10:12 ` Steven Bosscher
2004-08-31 10:28 ` Karel Gardas
2004-08-31 10:44 ` Paolo Bonzini
2004-08-31 10:46 ` Karel Gardas
2004-08-31 10:49 ` Steven Bosscher
2004-08-31 11:00 ` Paolo Bonzini
2004-08-31 11:24 ` Steven Bosscher
2004-08-31 19:30 ` Mike Stump
2004-08-31 12:48 ` Karel Gardas
2004-09-01 7:18 ` Paolo Bonzini [this message]
2004-08-31 10:55 ` Steven Bosscher
2004-08-31 13:57 ` Karel Gardas
2004-09-01 11:18 ` Giovanni Bajo
2004-09-02 9:41 ` Karel Gardas
2004-09-02 20:32 ` Compilation performance comparison of gcc3.4.1 and gcc3.5.02004-08-30 " Giovanni Bajo
2004-09-04 7:35 ` Karel Gardas
2004-09-02 9:44 ` Compilation performance comparison of gcc3.4.1 and gcc3.5.0 2004-08-30 " Karel Gardas
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