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* [Bug tree-optimization/46969] New: -O -ftree-vectorize -ftree-parallelize-loops=2 -fcompare-debug @ 2010-12-15 19:27 zsojka at seznam dot cz 2010-12-15 19:30 ` [Bug tree-optimization/46969] -fcompare-debug failure with -O -ftree-vectorize -ftree-parallelize-loops=2 zsojka at seznam dot cz ` (5 more replies) 0 siblings, 6 replies; 7+ messages in thread From: zsojka at seznam dot cz @ 2010-12-15 19:27 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46969 Summary: -O -ftree-vectorize -ftree-parallelize-loops=2 -fcompare-debug 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: aoliva@gcc.gnu.org Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Created attachment 22772 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22772 reduced testcase (from gcc.dg/vect/pr44507.c) This problem seems to be quite fragile. $ gcc -O -ftree-vectoriztree-parallelize-loops=2 -fcompare-debug pr46969.c gcc: error: pr46969.c: -fcompare-debug failure (length) Tested revisions: r167809 - fail r165699 - fail r161659 - OK 4.5 r166509 - OK ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46969] -fcompare-debug failure with -O -ftree-vectorize -ftree-parallelize-loops=2 2010-12-15 19:27 [Bug tree-optimization/46969] New: -O -ftree-vectorize -ftree-parallelize-loops=2 -fcompare-debug zsojka at seznam dot cz @ 2010-12-15 19:30 ` zsojka at seznam dot cz 2010-12-15 20:15 ` [Bug tree-optimization/46969] [4.6 Regression] " hjl.tools at gmail dot com ` (4 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: zsojka at seznam dot cz @ 2010-12-15 19:30 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46969 --- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> 2010-12-15 19:29:53 UTC --- Created attachment 22773 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22773 dumps - pr46969.*gkd ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46969] [4.6 Regression] -fcompare-debug failure with -O -ftree-vectorize -ftree-parallelize-loops=2 2010-12-15 19:27 [Bug tree-optimization/46969] New: -O -ftree-vectorize -ftree-parallelize-loops=2 -fcompare-debug zsojka at seznam dot cz 2010-12-15 19:30 ` [Bug tree-optimization/46969] -fcompare-debug failure with -O -ftree-vectorize -ftree-parallelize-loops=2 zsojka at seznam dot cz @ 2010-12-15 20:15 ` hjl.tools at gmail dot com 2010-12-16 11:35 ` irar at il dot ibm.com ` (3 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: hjl.tools at gmail dot com @ 2010-12-15 20:15 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46969 H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2010.12.15 20:14:58 CC| |irar at il dot ibm.com Target Milestone|--- |4.6.0 Summary|-fcompare-debug failure |[4.6 Regression] |with -O -ftree-vectorize |-fcompare-debug failure |-ftree-parallelize-loops=2 |with -O -ftree-vectorize | |-ftree-parallelize-loops=2 Ever Confirmed|0 |1 --- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2010-12-15 20:14:58 UTC --- It is caused by revision 161797: http://gcc.gnu.org/ml/gcc-cvs/2010-07/msg00151.html ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46969] [4.6 Regression] -fcompare-debug failure with -O -ftree-vectorize -ftree-parallelize-loops=2 2010-12-15 19:27 [Bug tree-optimization/46969] New: -O -ftree-vectorize -ftree-parallelize-loops=2 -fcompare-debug zsojka at seznam dot cz 2010-12-15 19:30 ` [Bug tree-optimization/46969] -fcompare-debug failure with -O -ftree-vectorize -ftree-parallelize-loops=2 zsojka at seznam dot cz 2010-12-15 20:15 ` [Bug tree-optimization/46969] [4.6 Regression] " hjl.tools at gmail dot com @ 2010-12-16 11:35 ` irar at il dot ibm.com 2010-12-16 13:29 ` jakub at gcc dot gnu.org ` (2 subsequent siblings) 5 siblings, 0 replies; 7+ messages in thread From: irar at il dot ibm.com @ 2010-12-16 11:35 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46969 --- Comment #3 from Ira Rosen <irar at il dot ibm.com> 2010-12-16 11:35:19 UTC --- This revision changed the realignment for the loop, we now use loop peeling to make the accesses aligned. Maybe auto-par doesn't handle the peeled loop correctly? Also after a small change in the code I couldn't see the error anymore, even after reverting the change. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46969] [4.6 Regression] -fcompare-debug failure with -O -ftree-vectorize -ftree-parallelize-loops=2 2010-12-15 19:27 [Bug tree-optimization/46969] New: -O -ftree-vectorize -ftree-parallelize-loops=2 -fcompare-debug zsojka at seznam dot cz ` (2 preceding siblings ...) 2010-12-16 11:35 ` irar at il dot ibm.com @ 2010-12-16 13:29 ` jakub at gcc dot gnu.org 2010-12-18 21:07 ` jakub at gcc dot gnu.org 2010-12-18 21:08 ` jakub at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2010-12-16 13:29 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46969 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED AssignedTo|unassigned at gcc dot |jakub at gcc dot gnu.org |gnu.org | --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-12-16 13:18:15 UTC --- Created attachment 22784 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22784 gcc46-pr46959.patch Untested fix. ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46969] [4.6 Regression] -fcompare-debug failure with -O -ftree-vectorize -ftree-parallelize-loops=2 2010-12-15 19:27 [Bug tree-optimization/46969] New: -O -ftree-vectorize -ftree-parallelize-loops=2 -fcompare-debug zsojka at seznam dot cz ` (3 preceding siblings ...) 2010-12-16 13:29 ` jakub at gcc dot gnu.org @ 2010-12-18 21:07 ` jakub at gcc dot gnu.org 2010-12-18 21:08 ` jakub at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2010-12-18 21:07 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46969 --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-12-18 21:07:15 UTC --- Author: jakub Date: Sat Dec 18 21:07:12 2010 New Revision: 168034 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168034 Log: PR tree-optimization/46969 * tree-parloops.c (struct reduction_info): Add reduc_version. (reduction_info_hash): Return reduc_version field. (reduction_phi): Set reduc_version to gimple_uid (phi). (build_new_reduction): Set reduc_version to SSA_NAME_VERSION of phi result. (set_reduc_phi_uids): New function. (gather_scalar_reductions): Call it at the end through htab_traverse. * gcc.dg/autopar/pr46969.c: New test. Added: trunk/gcc/testsuite/gcc.dg/autopar/pr46969.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-parloops.c ^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/46969] [4.6 Regression] -fcompare-debug failure with -O -ftree-vectorize -ftree-parallelize-loops=2 2010-12-15 19:27 [Bug tree-optimization/46969] New: -O -ftree-vectorize -ftree-parallelize-loops=2 -fcompare-debug zsojka at seznam dot cz ` (4 preceding siblings ...) 2010-12-18 21:07 ` jakub at gcc dot gnu.org @ 2010-12-18 21:08 ` jakub at gcc dot gnu.org 5 siblings, 0 replies; 7+ messages in thread From: jakub at gcc dot gnu.org @ 2010-12-18 21:08 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46969 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2010-12-18 21:08:14 UTC --- Fixed. ^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2010-12-18 21:08 UTC | newest] Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2010-12-15 19:27 [Bug tree-optimization/46969] New: -O -ftree-vectorize -ftree-parallelize-loops=2 -fcompare-debug zsojka at seznam dot cz 2010-12-15 19:30 ` [Bug tree-optimization/46969] -fcompare-debug failure with -O -ftree-vectorize -ftree-parallelize-loops=2 zsojka at seznam dot cz 2010-12-15 20:15 ` [Bug tree-optimization/46969] [4.6 Regression] " hjl.tools at gmail dot com 2010-12-16 11:35 ` irar at il dot ibm.com 2010-12-16 13:29 ` jakub at gcc dot gnu.org 2010-12-18 21:07 ` jakub at gcc dot gnu.org 2010-12-18 21:08 ` jakub at gcc dot gnu.org
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