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[Bug tree-optimization/54776] [4.8 Regression] tramp3d-v4: 20% performance regression using -O3
- From: "hubicka at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 05 Nov 2012 16:24:07 +0000
- Subject: [Bug tree-optimization/54776] [4.8 Regression] tramp3d-v4: 20% performance regression using -O3
- Auto-submitted: auto-generated
- References: <bug-54776-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54776
--- Comment #12 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-11-05 16:24:07 UTC ---
Yeah + there is quite nice code size savings. I must say it took quite a while
to chase out all bugs that was affecting tramp3d's performance.
One thing I noticed however is that our EH tables are several times bigger than
clang's that probably counts as a bug. I will open separate PR for that. At
quick glance all throwing calls seems quite resonable to me.
Honza