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[Bug tree-optimization/33604] [4.3 Regression] Revision 119502 causes significantly slower results with 4.3 compared to 4.2
- From: "michael dot olbrich at gmx dot net" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Dec 2007 12:17:08 -0000
- Subject: [Bug tree-optimization/33604] [4.3 Regression] Revision 119502 causes significantly slower results with 4.3 compared to 4.2
- References: <bug-33604-15171@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #31 from michael dot olbrich at gmx dot net 2007-12-04 12:17 -------
Subject: Re: [4.3 Regression] Revision 119502
causes significantly slower results with 4.3 compared to 4.2
On Tue, Dec 04, 2007 at 11:17:46AM -0000, bonzini at gnu dot org wrote:
> - http://gcc.gnu.org/bugzilla/attachment.cgi?id=14496
same as gcc-bug-report.tar.gz
> - http://gcc.gnu.org/bugzilla/attachment.cgi?id=14497
> - http://gcc.gnu.org/bugzilla/attachment.cgi?id=14497 with the first #if 0 enabled
The difference between 4.2 and 4.3 is not as big but is still there:
0.7s vs. 1.6s
No significant change with "--param max-aliased-vops=100000".
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33604