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[Bug tree-optimization/59487] [4.9 Regression] When compiled with -fwhole-program rnflow.f90 runs up to 40% slower after r202826
- From: "dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 13 Dec 2013 14:13:53 +0000
- Subject: [Bug tree-optimization/59487] [4.9 Regression] When compiled with -fwhole-program rnflow.f90 runs up to 40% slower after r202826
- Auto-submitted: auto-generated
- References: <bug-59487-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59487
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Still the regression must appear with a different revision.
> The one you cited has nothing to do with -fwhole-program.
I see the slowdown with -fwhole-program for all the revisions I have tested
starting at r202826 up to r205891. If this has been fixed and broken again,
bissection won't give reliable results and I am not planning to test the 3000+
revisions in that range.