[Bug middle-end/52835] [4.7/4.8 Regression] -O3 wrongly optimizes loop __builtin_memcpy away

2012-04-10 Thread rguenth at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52835 Richard Guenther changed: What|Removed |Added CC||garfieldsk at gmail dot com --- Commen

[Bug middle-end/52835] [4.7/4.8 Regression] -O3 wrongly optimizes loop __builtin_memcpy away

2012-04-03 Thread jakub at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52835 Jakub Jelinek changed: What|Removed |Added Status|NEW |RESOLVED Resolution|

[Bug middle-end/52835] [4.7/4.8 Regression] -O3 wrongly optimizes loop __builtin_memcpy away

2012-04-03 Thread jakub at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52835 --- Comment #7 from Jakub Jelinek 2012-04-03 09:05:05 UTC --- Author: jakub Date: Tue Apr 3 09:05:00 2012 New Revision: 186103 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186103 Log: PR tree-optimization/52835 * tree-data-ref.

[Bug middle-end/52835] [4.7/4.8 Regression] -O3 wrongly optimizes loop __builtin_memcpy away

2012-04-03 Thread jakub at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52835 --- Comment #6 from Jakub Jelinek 2012-04-03 08:49:18 UTC --- Author: jakub Date: Tue Apr 3 08:49:14 2012 New Revision: 186101 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=186101 Log: PR tree-optimization/52835 * tree-data-ref.

[Bug middle-end/52835] [4.7/4.8 Regression] -O3 wrongly optimizes loop __builtin_memcpy away

2012-04-02 Thread jakub at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52835 --- Comment #5 from Jakub Jelinek 2012-04-02 19:38:31 UTC --- Created attachment 27069 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27069 gcc48-pr52835.patch Untested fix. Ignoring failures from compute_*loop can't be right.

[Bug middle-end/52835] [4.7/4.8 Regression] -O3 wrongly optimizes loop __builtin_memcpy away

2012-04-02 Thread jakub at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52835 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org --- Comment #4 f

[Bug middle-end/52835] [4.7/4.8 Regression] -O3 wrongly optimizes loop __builtin_memcpy away

2012-04-02 Thread arnaud02 at users dot sourceforge.net
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52835 --- Comment #3 from Arnaud Desitter 2012-04-02 17:54:06 UTC --- Additionally: >cat xxx.f SUBROUTINE XXX(RES,ALP,REN,NN ) DIMENSION ALP(NN),REN (NN),RES (NN) DO IP = 1,NN REN(IP) = 0.0 ALP(IP) = 0.0 CAL

[Bug middle-end/52835] [4.7/4.8 Regression] -O3 wrongly optimizes loop __builtin_memcpy away

2012-04-02 Thread dominiq at lps dot ens.fr
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52835 --- Comment #2 from Dominique d'Humieres 2012-04-02 16:18:47 UTC --- r183622 is OK r183649 miscompiles the code.

[Bug middle-end/52835] [4.7/4.8 Regression] -O3 wrongly optimizes loop __builtin_memcpy away

2012-04-02 Thread burnus at gcc dot gnu.org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52835 Tobias Burnus changed: What|Removed |Added Status|UNCONFIRMED |NEW Keywords|