[Bug fortran/53957] Polyhedron 11 benchmark: MP_PROP_DESIGN twice as long as other compiler

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53957

--- Comment #9 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-26 10:18:55 UTC ---
(In reply to comment #8)
> (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.

That's a pre-existing issue on current trunk, unrelated to the patch.