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[Bug fortran/42888] [4.5 Regression] ICE in fold_convert_loc, at fold-const.c:2670
- From: "anlauf at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 30 Jan 2010 00:01:18 -0000
- Subject: [Bug fortran/42888] [4.5 Regression] ICE in fold_convert_loc, at fold-const.c:2670
- References: <bug-42888-6318@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #18 from anlauf at gmx dot de 2010-01-30 00:01 -------
(In reply to comment #17)
> I tried this one and compared it to the semi-solution in comment #9.
> Both "work for me", but the patch from comment #16 appears to produce
> a significant performance regression for my code of the order of 10-15%
> as compared to the one from #9.
My mistake. I had 3 consistent, bad timings, but now it appears that the
system was not properly idle. I redid the timings on an now idle system,
and performance was back to normal. Sorry for the false alarm!
As far as the patch is concerned, I guess that you are on the right track.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42888