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* [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs
@ 2022-11-24 9:22 ro at gcc dot gnu.org
2022-11-24 9:24 ` [Bug tree-optimization/107855] " ro at gcc dot gnu.org
` (8 more replies)
0 siblings, 9 replies; 10+ messages in thread
From: ro at gcc dot gnu.org @ 2022-11-24 9:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107855
Bug ID: 107855
Summary: gcc.dg/vect/vect-ifcvt-18.c FAILs
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
CC: lingling.kong7 at gmail dot com
Target Milestone: ---
Target: i386-pc-solaris2.12, x86_64-pc-linux-gnu
Since it was introduced, the new gcc.dg/vect/vect-ifcvt-18.c test FAILs on
Solaris/x86:
* 32-bit:
FAIL: gcc.dg/vect/vect-ifcvt-18.c -flto -ffat-lto-objects scan-tree-dump vect
"vectorized 3 loops"
FAIL: gcc.dg/vect/vect-ifcvt-18.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-ifcvt-18.c execution test
FAIL: gcc.dg/vect/vect-ifcvt-18.c scan-tree-dump vect "vectorized 3 loops"
* 64-bit:
FAIL: gcc.dg/vect/vect-ifcvt-18.c -flto -ffat-lto-objects scan-tree-dump vect
"vectorized 3 loops"
FAIL: gcc.dg/vect/vect-ifcvt-18.c scan-tree-dump vect "vectorized 3 loops"
There are also several gcc-testresults reports for Linux/x86_64.
The 32-bit execution test hits abort in l.34 (nothing useful to be learned
from gdb: res? all optimized out. I'm also including the 32-bit dump.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/107855] gcc.dg/vect/vect-ifcvt-18.c FAILs
2022-11-24 9:22 [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs ro at gcc dot gnu.org
@ 2022-11-24 9:24 ` ro at gcc dot gnu.org
2022-11-24 9:24 ` ro at gcc dot gnu.org
` (7 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: ro at gcc dot gnu.org @ 2022-11-24 9:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107855
--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 53958
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53958&action=edit
32-bit i386-pc-solaris2.11 vect-ifcvt-18.c.172t.vect
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/107855] gcc.dg/vect/vect-ifcvt-18.c FAILs
2022-11-24 9:22 [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs ro at gcc dot gnu.org
2022-11-24 9:24 ` [Bug tree-optimization/107855] " ro at gcc dot gnu.org
@ 2022-11-24 9:24 ` ro at gcc dot gnu.org
2022-11-24 10:52 ` rguenth at gcc dot gnu.org
` (6 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: ro at gcc dot gnu.org @ 2022-11-24 9:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107855
Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |13.0
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/107855] gcc.dg/vect/vect-ifcvt-18.c FAILs
2022-11-24 9:22 [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs ro at gcc dot gnu.org
2022-11-24 9:24 ` [Bug tree-optimization/107855] " ro at gcc dot gnu.org
2022-11-24 9:24 ` ro at gcc dot gnu.org
@ 2022-11-24 10:52 ` rguenth at gcc dot gnu.org
2022-11-24 10:59 ` ro at gcc dot gnu.org
` (5 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-11-24 10:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107855
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can you attach the ifcvt dump as well? The issue seems to be that only the
first loop is if-converted, so floats are not handled at all (only a single
loop is vectorized).
Not sure about the runtime FAIL with 32bit - does that also happen with -O0?
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/107855] gcc.dg/vect/vect-ifcvt-18.c FAILs
2022-11-24 9:22 [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs ro at gcc dot gnu.org
` (2 preceding siblings ...)
2022-11-24 10:52 ` rguenth at gcc dot gnu.org
@ 2022-11-24 10:59 ` ro at gcc dot gnu.org
2022-11-24 11:00 ` ro at gcc dot gnu.org
` (4 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: ro at gcc dot gnu.org @ 2022-11-24 10:59 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107855
--- Comment #3 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 53959
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53959&action=edit
32-bit i386-pc-solaris2.11 vect-ifcvt-18.c.171t.ifcvt
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/107855] gcc.dg/vect/vect-ifcvt-18.c FAILs
2022-11-24 9:22 [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs ro at gcc dot gnu.org
` (3 preceding siblings ...)
2022-11-24 10:59 ` ro at gcc dot gnu.org
@ 2022-11-24 11:00 ` ro at gcc dot gnu.org
2023-04-26 6:57 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: ro at gcc dot gnu.org @ 2022-11-24 11:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107855
--- Comment #4 from Rainer Orth <ro at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #2)
> Can you attach the ifcvt dump as well? The issue seems to be that only the
> first loop is if-converted, so floats are not handled at all (only a single
> loop is vectorized).
Sure, done.
> Not sure about the runtime FAIL with 32bit - does that also happen with -O0?
No, the test runs successfully then.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/107855] gcc.dg/vect/vect-ifcvt-18.c FAILs
2022-11-24 9:22 [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs ro at gcc dot gnu.org
` (4 preceding siblings ...)
2022-11-24 11:00 ` ro at gcc dot gnu.org
@ 2023-04-26 6:57 ` rguenth at gcc dot gnu.org
2023-05-13 7:03 ` xry111 at gcc dot gnu.org
` (2 subsequent siblings)
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-04-26 6:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107855
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|13.0 |13.2
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 13.1 is being released, retargeting bugs to GCC 13.2.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/107855] gcc.dg/vect/vect-ifcvt-18.c FAILs
2022-11-24 9:22 [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs ro at gcc dot gnu.org
` (5 preceding siblings ...)
2023-04-26 6:57 ` rguenth at gcc dot gnu.org
@ 2023-05-13 7:03 ` xry111 at gcc dot gnu.org
2023-07-27 9:24 ` rguenth at gcc dot gnu.org
2024-02-26 13:56 ` ro at CeBiTec dot Uni-Bielefeld.DE
8 siblings, 0 replies; 10+ messages in thread
From: xry111 at gcc dot gnu.org @ 2023-05-13 7:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107855
Xi Ruoyao <xry111 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2023-05-13
CC| |xry111 at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #6 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
Hmm, the test contains
"/* { dg-additional-options "-Ofast -mavx" { target avx_runtime } } */"
So it passes on AVX capable native builds, but fails otherwise.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/107855] gcc.dg/vect/vect-ifcvt-18.c FAILs
2022-11-24 9:22 [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs ro at gcc dot gnu.org
` (6 preceding siblings ...)
2023-05-13 7:03 ` xry111 at gcc dot gnu.org
@ 2023-07-27 9:24 ` rguenth at gcc dot gnu.org
2024-02-26 13:56 ` ro at CeBiTec dot Uni-Bielefeld.DE
8 siblings, 0 replies; 10+ messages in thread
From: rguenth at gcc dot gnu.org @ 2023-07-27 9:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107855
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|13.2 |13.3
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 13.2 is being released, retargeting bugs to GCC 13.3.
^ permalink raw reply [flat|nested] 10+ messages in thread
* [Bug tree-optimization/107855] gcc.dg/vect/vect-ifcvt-18.c FAILs
2022-11-24 9:22 [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs ro at gcc dot gnu.org
` (7 preceding siblings ...)
2023-07-27 9:24 ` rguenth at gcc dot gnu.org
@ 2024-02-26 13:56 ` ro at CeBiTec dot Uni-Bielefeld.DE
8 siblings, 0 replies; 10+ messages in thread
From: ro at CeBiTec dot Uni-Bielefeld.DE @ 2024-02-26 13:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107855
--- Comment #8 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #6 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
> Hmm, the test contains
>
> "/* { dg-additional-options "-Ofast -mavx" { target avx_runtime } } */"
>
> So it passes on AVX capable native builds, but fails otherwise.
I can reproduce things in a VM now: when it doesn't have avx support,
the test is compiled with -msse2 only and FAILs both for the dump and
execution:
FAIL: gcc.dg/vect/vect-ifcvt-18.c -flto -ffat-lto-objects scan-tree-dump vect
"vectorized 3 loops"
FAIL: gcc.dg/vect/vect-ifcvt-18.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-ifcvt-18.c execution test
FAIL: gcc.dg/vect/vect-ifcvt-18.c scan-tree-dump vect "vectorized 3 loops"
The test aborts here:
Thread 2 received signal SIGABRT, Aborted.
#0 0xfe26e385 in __lwp_sigqueue () from /lib/libc.so.1
#1 0xfe2660ef in thr_kill () from /lib/libc.so.1
#2 0xfe19db82 in raise () from /lib/libc.so.1
#3 0xfe16b1f4 in abort () from /lib/libc.so.1
#4 0x08050d58 in main ()
at
/vol/gcc/src/hg/master/local/gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c:34
and the dump shows
/vol/gcc/src/hg/master/local/gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c:28:17:
note: === analyze_loop_nest ===
/vol/gcc/src/hg/master/local/gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c:28:17:
note: === vect_analyze_loop_form ===
/vol/gcc/src/hg/master/local/gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c:28:17:
note: using as main loop exit: 13 -> 14 [AUX: 0]
/vol/gcc/src/hg/master/local/gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c:28:17:
missed: not vectorized: unsupported control flow in loop.
/vol/gcc/src/hg/master/local/gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c:28:17:
missed: bad loop form.
/vol/gcc/src/hg/master/local/gcc/testsuite/gcc.dg/vect/vect-ifcvt-18.c:28:17:
missed: couldn't vectorize loop
When I add avx support to the VM, the test PASSes.
It seems the test is missing some requirement here.
^ permalink raw reply [flat|nested] 10+ messages in thread
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2022-11-24 9:22 [Bug tree-optimization/107855] New: gcc.dg/vect/vect-ifcvt-18.c FAILs ro at gcc dot gnu.org
2022-11-24 9:24 ` [Bug tree-optimization/107855] " ro at gcc dot gnu.org
2022-11-24 9:24 ` ro at gcc dot gnu.org
2022-11-24 10:52 ` rguenth at gcc dot gnu.org
2022-11-24 10:59 ` ro at gcc dot gnu.org
2022-11-24 11:00 ` ro at gcc dot gnu.org
2023-04-26 6:57 ` rguenth at gcc dot gnu.org
2023-05-13 7:03 ` xry111 at gcc dot gnu.org
2023-07-27 9:24 ` rguenth at gcc dot gnu.org
2024-02-26 13:56 ` ro at CeBiTec dot Uni-Bielefeld.DE
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