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* [Bug tree-optimization/55187] New: [4.8 regression] FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times parloops "SUCCESS: may be parallelized" 0
@ 2012-11-03 8:05 schwab@linux-m68k.org
2012-11-03 15:23 ` [Bug tree-optimization/55187] " schwab@linux-m68k.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: schwab@linux-m68k.org @ 2012-11-03 8:05 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55187
Bug #: 55187
Summary: [4.8 regression] FAIL: gcc.dg/autopar/pr49960.c
scan-tree-dump-times parloops "SUCCESS: may be
parallelized" 0
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: schwab@linux-m68k.org
CC: hubicka@gcc.gnu.org
Target: m68k-*-*
gcc.dg/autopar/pr49960.c fails since r192989.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug tree-optimization/55187] [4.8 regression] FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times parloops "SUCCESS: may be parallelized" 0
2012-11-03 8:05 [Bug tree-optimization/55187] New: [4.8 regression] FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times parloops "SUCCESS: may be parallelized" 0 schwab@linux-m68k.org
@ 2012-11-03 15:23 ` schwab@linux-m68k.org
2012-11-03 16:44 ` hubicka at ucw dot cz
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: schwab@linux-m68k.org @ 2012-11-03 15:23 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55187
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|m68k-*-* |
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> 2012-11-03 15:23:25 UTC ---
Also fails on powerpc, likely universal.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug tree-optimization/55187] [4.8 regression] FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times parloops "SUCCESS: may be parallelized" 0
2012-11-03 8:05 [Bug tree-optimization/55187] New: [4.8 regression] FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times parloops "SUCCESS: may be parallelized" 0 schwab@linux-m68k.org
2012-11-03 15:23 ` [Bug tree-optimization/55187] " schwab@linux-m68k.org
@ 2012-11-03 16:44 ` hubicka at ucw dot cz
2012-11-05 16:27 ` [Bug tree-optimization/55187] [4.8 regression] not able to determine number if iterations of loops with perfect nest hubicka at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: hubicka at ucw dot cz @ 2012-11-03 16:44 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55187
--- Comment #2 from Jan Hubicka <hubicka at ucw dot cz> 2012-11-03 16:44:14 UTC ---
> --- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> 2012-11-03 15:23:25 UTC ---
> Also fails on powerpc, likely universal.
Yes, it fails for me too, I am looking into it.
Honza
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug tree-optimization/55187] [4.8 regression] not able to determine number if iterations of loops with perfect nest.
2012-11-03 8:05 [Bug tree-optimization/55187] New: [4.8 regression] FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times parloops "SUCCESS: may be parallelized" 0 schwab@linux-m68k.org
2012-11-03 15:23 ` [Bug tree-optimization/55187] " schwab@linux-m68k.org
2012-11-03 16:44 ` hubicka at ucw dot cz
@ 2012-11-05 16:27 ` hubicka at gcc dot gnu.org
2012-11-07 9:34 ` jakub at gcc dot gnu.org
2012-12-07 10:12 ` [Bug tree-optimization/55187] [4.8 regression] not able to determine number of " rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: hubicka at gcc dot gnu.org @ 2012-11-05 16:27 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55187
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-11-05
Summary|[4.8 regression] FAIL: |[4.8 regression] not able
|gcc.dg/autopar/pr49960.c |to determine number if
|scan-tree-dump-times |iterations of loops with
|parloops "SUCCESS: may be |perfect nest.
|parallelized" 0 |
Ever Confirmed|0 |1
Severity|normal |enhancement
--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-11-05 16:27:17 UTC ---
I fixed autopar testcase by
http://gcc.gnu.org/ml/gcc-patches/2012-11/msg00368.html It was working by
accident, not by design.
We however really miss optimization here: in perfect loop nest the loop headers
should go ahead all the loops (as explained in the mail). So lets make this PR
to track it.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug tree-optimization/55187] [4.8 regression] not able to determine number if iterations of loops with perfect nest.
2012-11-03 8:05 [Bug tree-optimization/55187] New: [4.8 regression] FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times parloops "SUCCESS: may be parallelized" 0 schwab@linux-m68k.org
` (2 preceding siblings ...)
2012-11-05 16:27 ` [Bug tree-optimization/55187] [4.8 regression] not able to determine number if iterations of loops with perfect nest hubicka at gcc dot gnu.org
@ 2012-11-07 9:34 ` jakub at gcc dot gnu.org
2012-12-07 10:12 ` [Bug tree-optimization/55187] [4.8 regression] not able to determine number of " rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-11-07 9:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55187
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |4.8.0
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug tree-optimization/55187] [4.8 regression] not able to determine number of iterations of loops with perfect nest.
2012-11-03 8:05 [Bug tree-optimization/55187] New: [4.8 regression] FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times parloops "SUCCESS: may be parallelized" 0 schwab@linux-m68k.org
` (3 preceding siblings ...)
2012-11-07 9:34 ` jakub at gcc dot gnu.org
@ 2012-12-07 10:12 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-07 10:12 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55187
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |DUPLICATE
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-07 10:11:58 UTC ---
Then it's a dup of PR23855.
*** This bug has been marked as a duplicate of bug 23855 ***
^ permalink raw reply [flat|nested] 6+ messages in thread
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2012-11-03 8:05 [Bug tree-optimization/55187] New: [4.8 regression] FAIL: gcc.dg/autopar/pr49960.c scan-tree-dump-times parloops "SUCCESS: may be parallelized" 0 schwab@linux-m68k.org
2012-11-03 15:23 ` [Bug tree-optimization/55187] " schwab@linux-m68k.org
2012-11-03 16:44 ` hubicka at ucw dot cz
2012-11-05 16:27 ` [Bug tree-optimization/55187] [4.8 regression] not able to determine number if iterations of loops with perfect nest hubicka at gcc dot gnu.org
2012-11-07 9:34 ` jakub at gcc dot gnu.org
2012-12-07 10:12 ` [Bug tree-optimization/55187] [4.8 regression] not able to determine number of " rguenth at gcc dot gnu.org
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