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* [Bug testsuite/96149] New: gcc.dg/vect/slp-46.c on aarch64
@ 2020-07-10 12:52 clyon at gcc dot gnu.org
2020-07-10 13:01 ` [Bug testsuite/96149] " rguenth at gcc dot gnu.org
2021-08-31 5:15 ` [Bug tree-optimization/96149] " pinskia at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: clyon at gcc dot gnu.org @ 2020-07-10 12:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96149
Bug ID: 96149
Summary: gcc.dg/vect/slp-46.c on aarch64
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
Assignee: unassigned at gcc dot gnu.org
Reporter: clyon at gcc dot gnu.org
Target Milestone: ---
gcc.dg/vect/slp-46.c fails on aarch64 since it was introduced.
In the logs I can see:
PASS: gcc.dg/vect/slp-46.c execution test
gcc.dg/vect/slp-46.c: pattern found 0 times
FAIL: gcc.dg/vect/slp-46.c scan-tree-dump-times vect "vectorizing stmts using
SLP" 2
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug testsuite/96149] gcc.dg/vect/slp-46.c on aarch64
2020-07-10 12:52 [Bug testsuite/96149] New: gcc.dg/vect/slp-46.c on aarch64 clyon at gcc dot gnu.org
@ 2020-07-10 13:01 ` rguenth at gcc dot gnu.org
2021-08-31 5:15 ` [Bug tree-optimization/96149] " pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-07-10 13:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96149
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The two single-element interleaving cases are expected to be SLP vectorized
where the target needs a splat operation (permute of two doubles {0, 0}).
Ah, the reason is the aarch64 speciality that forces load/store-lanes ...
slp-46.c:17:3: note: can use vec_store_lanes<OI><V2DF>
slp-46.c:17:3: note: can use vec_load_lanes<OI><V2DF>
slp-46.c:17:3: missed: Built SLP cancelled: can use load/store-lanes
I don't think we have an effective target for this? So XFAIL for aarch64?
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/96149] gcc.dg/vect/slp-46.c on aarch64
2020-07-10 12:52 [Bug testsuite/96149] New: gcc.dg/vect/slp-46.c on aarch64 clyon at gcc dot gnu.org
2020-07-10 13:01 ` [Bug testsuite/96149] " rguenth at gcc dot gnu.org
@ 2021-08-31 5:15 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-31 5:15 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96149
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|testsuite |tree-optimization
Ever confirmed|0 |1
Version|10.0 |11.0
Keywords| |missed-optimization, xfail
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-08-31
Severity|normal |enhancement
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The testcase was xfail'ed at r11-5087.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-08-31 5:15 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2020-07-10 12:52 [Bug testsuite/96149] New: gcc.dg/vect/slp-46.c on aarch64 clyon at gcc dot gnu.org
2020-07-10 13:01 ` [Bug testsuite/96149] " rguenth at gcc dot gnu.org
2021-08-31 5:15 ` [Bug tree-optimization/96149] " pinskia at gcc dot gnu.org
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