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[Bug fortran/53957] Polyhedron 11 benchmark: MP_PROP_DESIGN twice as long as other compiler
- From: "burnus at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 26 Jul 2012 09:58:41 +0000
- Subject: [Bug fortran/53957] Polyhedron 11 benchmark: MP_PROP_DESIGN twice as long as other compiler
- Auto-submitted: auto-generated
- References: <bug-53957-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53957
--- Comment #8 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-07-26 09:58:41 UTC ---
(In reply to comment #7)
> so it would be still worthwhile to pursue your patch if it does not have
> negative effects elsewhere. We should be able to fix the induction code
> to handle this case.
Regarding negative (or positive) impact with regards to performance: That's
difficult to test :-(
However, with the patch, f951 stops with the following ICE
internal compiler error: in free_regset_pool, at sel-sched-ir.c:994
with gfortran.dg/pr42294.f and gfortran.dg/pr44691.f.