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[Bug tree-optimization/17050] [3.5 Regression] Performance pessimisation as compared to GCC 3.4
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 3 Sep 2004 22:19:55 -0000
- Subject: [Bug tree-optimization/17050] [3.5 Regression] Performance pessimisation as compared to GCC 3.4
- References: <20040816152907.17050.coyote@coyotegulch.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From steven at gcc dot gnu dot org 2004-09-03 22:19 -------
Hmm and also -std=c99
Hmm, I would certainly be interested in learning what kind of system you are testing on. On
my Opteron I get the following,
GCC 3.3-hammer (SUSE9 system compiler):
run time: 96.195581
GCC 3.5-20040903 (CVS HEAD)
run time: 110.353146
So, there is a regression, but not from 12s to >30s. What flags did you use??
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17050