[Bug tree-optimization/55022] [4.8 Regression] air.f90 is miscompliled with -m64 -O2 -fgraphite-identity after revision 190619
mircea.namolaru at inria dot fr
gcc-bugzilla@gcc.gnu.org
Wed Apr 23 08:58:00 GMT 2014
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55022
--- Comment #27 from Mircea Namolaru <mircea.namolaru at inria dot fr> ---
Hi,
Many thanks.
I've passed over the meta-bug opened by you for Graphite,
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59859 and seems to me
that many of the problem have been already solved (some by you) or at least
as in case of some compile-time/memory usage/missed optimization issues
we know how to solve it - some form of delinearization of array accesses
that for sure was not for GCC 4.9.
Btw, there is also another Graphite bug in this list
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59586 that was solved but didn't
make it for GCC 4.9.0.
Mircea
----- Original Message -----
> From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
> To: "mircea namolaru" <mircea.namolaru@inria.fr>
> Sent: Tuesday, April 22, 2014 3:34:09 PM
> Subject: [Bug tree-optimization/55022] [4.8 Regression] air.f90 is miscompliled with -m64 -O2 -fgraphite-identity
> after revision 190619
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55022
>
> --- Comment #26 from Richard Biener <rguenth at gcc dot gnu.org> ---
> Author: rguenth
> Date: Tue Apr 22 13:33:37 2014
> New Revision: 209633
>
> URL: http://gcc.gnu.org/viewcvs?rev=209633&root=gcc&view=rev
> Log:
> 2014-04-22 Richard Biener <rguenther@suse.de>
>
> Backport from mainline
> 2014-04-14 Richard Biener <rguenther@suse.de>
>
> PR middle-end/55022
> * fold-const.c (negate_expr_p): Don't negate directional rounding
> division.
> (fold_negate_expr): Likewise.
>
> * gcc.dg/graphite/pr55022.c: New testcase.
>
> Added:
> branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/graphite/pr55022.c
> Modified:
> branches/gcc-4_9-branch/gcc/ChangeLog
> branches/gcc-4_9-branch/gcc/fold-const.c
> branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
>
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