* [Bug tree-optimization/65494] [5.0 Regression] Loop is not vectorized because of operand canonicalization.
2015-03-20 15:29 [Bug tree-optimization/65494] New: [5.0 Regression] Loop is not vectorized because of operand canonicalization ysrumyan at gmail dot com
@ 2015-03-20 16:04 ` ysrumyan at gmail dot com
2015-03-20 16:43 ` jakub at gcc dot gnu.org
` (5 subsequent siblings)
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From: ysrumyan at gmail dot com @ 2015-03-20 16:04 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65494
--- Comment #1 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
Created attachment 35072
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35072&action=edit
test-case to reproduce
The following options are used to reproduce: -Ofast -funroll-loops
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/65494] [5.0 Regression] Loop is not vectorized because of operand canonicalization.
2015-03-20 15:29 [Bug tree-optimization/65494] New: [5.0 Regression] Loop is not vectorized because of operand canonicalization ysrumyan at gmail dot com
2015-03-20 16:04 ` [Bug tree-optimization/65494] " ysrumyan at gmail dot com
@ 2015-03-20 16:43 ` jakub at gcc dot gnu.org
2015-03-20 16:50 ` [Bug tree-optimization/65494] [5 " jakub at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu.org @ 2015-03-20 16:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65494
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-03-20
CC| |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r216728.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/65494] [5 Regression] Loop is not vectorized because of operand canonicalization.
2015-03-20 15:29 [Bug tree-optimization/65494] New: [5.0 Regression] Loop is not vectorized because of operand canonicalization ysrumyan at gmail dot com
2015-03-20 16:04 ` [Bug tree-optimization/65494] " ysrumyan at gmail dot com
2015-03-20 16:43 ` jakub at gcc dot gnu.org
@ 2015-03-20 16:50 ` jakub at gcc dot gnu.org
2015-03-20 17:40 ` jakub at gcc dot gnu.org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu.org @ 2015-03-20 16:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65494
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |5.0
Summary|[5.0 Regression] Loop is |[5 Regression] Loop is not
|not vectorized because of |vectorized because of
|operand canonicalization. |operand canonicalization.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/65494] [5 Regression] Loop is not vectorized because of operand canonicalization.
2015-03-20 15:29 [Bug tree-optimization/65494] New: [5.0 Regression] Loop is not vectorized because of operand canonicalization ysrumyan at gmail dot com
` (2 preceding siblings ...)
2015-03-20 16:50 ` [Bug tree-optimization/65494] [5 " jakub at gcc dot gnu.org
@ 2015-03-20 17:40 ` jakub at gcc dot gnu.org
2015-03-23 10:38 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu.org @ 2015-03-20 17:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65494
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
vect_build_slp_tree apparently has code to handle (limited number) of
permutations for commutative operands, but even if I bump the && *npermutes < 4
test to && *npermutes < 32, for some reason we still don't handle it (but only
retry 7 times, so don't run into this increased limit).
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/65494] [5 Regression] Loop is not vectorized because of operand canonicalization.
2015-03-20 15:29 [Bug tree-optimization/65494] New: [5.0 Regression] Loop is not vectorized because of operand canonicalization ysrumyan at gmail dot com
` (3 preceding siblings ...)
2015-03-20 17:40 ` jakub at gcc dot gnu.org
@ 2015-03-23 10:38 ` rguenth at gcc dot gnu.org
2015-03-23 13:02 ` rguenth at gcc dot gnu.org
2015-03-23 14:18 ` rguenth at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-03-23 10:38 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65494
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, for some reason I decided to re-alloc 'matches' before dealing with
children.
Not doing that fixes this bug,
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/65494] [5 Regression] Loop is not vectorized because of operand canonicalization.
2015-03-20 15:29 [Bug tree-optimization/65494] New: [5.0 Regression] Loop is not vectorized because of operand canonicalization ysrumyan at gmail dot com
` (4 preceding siblings ...)
2015-03-23 10:38 ` rguenth at gcc dot gnu.org
@ 2015-03-23 13:02 ` rguenth at gcc dot gnu.org
2015-03-23 14:18 ` rguenth at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-03-23 13:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65494
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar 23 12:47:54 2015
New Revision: 221592
URL: https://gcc.gnu.org/viewcvs?rev=221592&root=gcc&view=rev
Log:
2015-03-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/65494
* tree-vect-slp.c (vect_build_slp_tree): Do not (re-)allocate
matches here.
(vect_analyze_slp_instance): But do that here, always and once.
* gcc.dg/vect/pr65494.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr65494.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-slp.c
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/65494] [5 Regression] Loop is not vectorized because of operand canonicalization.
2015-03-20 15:29 [Bug tree-optimization/65494] New: [5.0 Regression] Loop is not vectorized because of operand canonicalization ysrumyan at gmail dot com
` (5 preceding siblings ...)
2015-03-23 13:02 ` rguenth at gcc dot gnu.org
@ 2015-03-23 14:18 ` rguenth at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-03-23 14:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65494
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 8+ messages in thread