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* [Bug tree-optimization/47426] New: [4.6 Regression] wrong code with -O2 -fipa-pta
@ 2011-01-24 3:11 zsojka at seznam dot cz
2011-01-24 4:11 ` [Bug tree-optimization/47426] " zsojka at seznam dot cz
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: zsojka at seznam dot cz @ 2011-01-24 3:11 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47426
Summary: [4.6 Regression] wrong code with -O2 -fipa-pta
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zsojka@seznam.cz
CC: rguenth@gcc.gnu.org
Host: x86_64-pc-linux-gnu
Target: x86_64-pc-linux-gnu
Created attachment 23093
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23093
foo.c
Output:
$ gcc main.c foo.c -O2
$ ./a.out
$ gcc main.c foo.c -O2 -fipa-pta
$ ./a.out
Aborted
foo.c is miscompiled
I don't know if this should be marked as regression.
Tested revisions:
r169143 - fail
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug tree-optimization/47426] [4.6 Regression] wrong code with -O2 -fipa-pta 2011-01-24 3:11 [Bug tree-optimization/47426] New: [4.6 Regression] wrong code with -O2 -fipa-pta zsojka at seznam dot cz @ 2011-01-24 4:11 ` zsojka at seznam dot cz 2011-01-24 8:25 ` hjl.tools at gmail dot com ` (5 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: zsojka at seznam dot cz @ 2011-01-24 4:11 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47426 --- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> 2011-01-24 02:05:12 UTC --- Created attachment 23094 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23094 main.c ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/47426] [4.6 Regression] wrong code with -O2 -fipa-pta 2011-01-24 3:11 [Bug tree-optimization/47426] New: [4.6 Regression] wrong code with -O2 -fipa-pta zsojka at seznam dot cz 2011-01-24 4:11 ` [Bug tree-optimization/47426] " zsojka at seznam dot cz @ 2011-01-24 8:25 ` hjl.tools at gmail dot com 2011-01-25 11:20 ` rguenth at gcc dot gnu.org ` (4 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: hjl.tools at gmail dot com @ 2011-01-24 8:25 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47426 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2011.01.24 05:19:22 Target Milestone|--- |4.6.0 Ever Confirmed|0 |1 --- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2011-01-24 05:19:22 UTC --- It is caused by revision 158374: http://gcc.gnu.org/ml/gcc-cvs/2010-04/msg00480.html ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/47426] [4.6 Regression] wrong code with -O2 -fipa-pta 2011-01-24 3:11 [Bug tree-optimization/47426] New: [4.6 Regression] wrong code with -O2 -fipa-pta zsojka at seznam dot cz 2011-01-24 4:11 ` [Bug tree-optimization/47426] " zsojka at seznam dot cz 2011-01-24 8:25 ` hjl.tools at gmail dot com @ 2011-01-25 11:20 ` rguenth at gcc dot gnu.org 2011-01-25 13:24 ` rguenth at gcc dot gnu.org ` (3 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-01-25 11:20 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47426 Richard Guenther <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org |gnu.org | --- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-01-25 11:10:34 UTC --- Mine (it's not really a regression). ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/47426] [4.6 Regression] wrong code with -O2 -fipa-pta 2011-01-24 3:11 [Bug tree-optimization/47426] New: [4.6 Regression] wrong code with -O2 -fipa-pta zsojka at seznam dot cz ` (2 preceding siblings ...) 2011-01-25 11:20 ` rguenth at gcc dot gnu.org @ 2011-01-25 13:24 ` rguenth at gcc dot gnu.org 2011-01-25 16:46 ` rguenth at gcc dot gnu.org ` (2 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-01-25 13:24 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47426 --- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-01-25 13:16:58 UTC --- The problem is that i_1(D) has an empty points-to set. It doesn't even receive constraints which is because the function is static but it escapes from getfoo which results in us failing to add NONLOCAL parameter inputs. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/47426] [4.6 Regression] wrong code with -O2 -fipa-pta 2011-01-24 3:11 [Bug tree-optimization/47426] New: [4.6 Regression] wrong code with -O2 -fipa-pta zsojka at seznam dot cz ` (3 preceding siblings ...) 2011-01-25 13:24 ` rguenth at gcc dot gnu.org @ 2011-01-25 16:46 ` rguenth at gcc dot gnu.org 2011-01-26 9:58 ` jakub at gcc dot gnu.org 2011-02-02 17:51 ` dnovillo at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: rguenth at gcc dot gnu.org @ 2011-01-25 16:46 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47426 --- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-01-25 16:38:32 UTC --- Author: rguenth Date: Tue Jan 25 16:38:26 2011 New Revision: 169241 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169241 Log: 2011-01-25 Richard Guenther <rguenther@suse.de> PR tree-optimization/47426 * tree-ssa-structalias.c (ipa_pta_execute): Make externally visible functions results escape. * gcc.dg/torture/pr47426-1.c: New testcase. * gcc.dg/torture/pr47426-2.c: Likewise. Added: trunk/gcc/testsuite/gcc.dg/torture/pr47426-1.c trunk/gcc/testsuite/gcc.dg/torture/pr47426-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/tree-ssa-structalias.c ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/47426] [4.6 Regression] wrong code with -O2 -fipa-pta 2011-01-24 3:11 [Bug tree-optimization/47426] New: [4.6 Regression] wrong code with -O2 -fipa-pta zsojka at seznam dot cz ` (4 preceding siblings ...) 2011-01-25 16:46 ` rguenth at gcc dot gnu.org @ 2011-01-26 9:58 ` jakub at gcc dot gnu.org 2011-02-02 17:51 ` dnovillo at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: jakub at gcc dot gnu.org @ 2011-01-26 9:58 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47426 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED CC| |jakub at gcc dot gnu.org Resolution| |FIXED --- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-26 08:39:39 UTC --- Fixed. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/47426] [4.6 Regression] wrong code with -O2 -fipa-pta 2011-01-24 3:11 [Bug tree-optimization/47426] New: [4.6 Regression] wrong code with -O2 -fipa-pta zsojka at seznam dot cz ` (5 preceding siblings ...) 2011-01-26 9:58 ` jakub at gcc dot gnu.org @ 2011-02-02 17:51 ` dnovillo at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: dnovillo at gcc dot gnu.org @ 2011-02-02 17:51 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47426 --- Comment #7 from Diego Novillo <dnovillo at gcc dot gnu.org> 2011-02-02 17:47:02 UTC --- Author: dnovillo Date: Wed Feb 2 17:46:57 2011 New Revision: 169584 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169584 Log: 2011-01-25 Richard Guenther <rguenther@suse.de> PR tree-optimization/47426 * tree-ssa-structalias.c (ipa_pta_execute): Make externally visible functions results escape. * gcc.dg/torture/pr47426-1.c: New testcase. * gcc.dg/torture/pr47426-2.c: Likewise. Added: branches/google/integration/gcc/testsuite/gcc.dg/torture/pr47426-1.c branches/google/integration/gcc/testsuite/gcc.dg/torture/pr47426-2.c Modified: branches/google/integration/gcc/ChangeLog branches/google/integration/gcc/tree-ssa-structalias.c ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2011-02-02 17:51 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-01-24 3:11 [Bug tree-optimization/47426] New: [4.6 Regression] wrong code with -O2 -fipa-pta zsojka at seznam dot cz 2011-01-24 4:11 ` [Bug tree-optimization/47426] " zsojka at seznam dot cz 2011-01-24 8:25 ` hjl.tools at gmail dot com 2011-01-25 11:20 ` rguenth at gcc dot gnu.org 2011-01-25 13:24 ` rguenth at gcc dot gnu.org 2011-01-25 16:46 ` rguenth at gcc dot gnu.org 2011-01-26 9:58 ` jakub at gcc dot gnu.org 2011-02-02 17:51 ` dnovillo at gcc dot gnu.org
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