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* [Bug regression/97018] New: [r11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake)
@ 2020-09-11 6:11 skpgkp2 at gmail dot com
2020-09-11 6:31 ` [Bug regression/97018] [11 " rguenth at gcc dot gnu.org
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: skpgkp2 at gmail dot com @ 2020-09-11 6:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97018
Bug ID: 97018
Summary: [r11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c
scan-assembler-times vfnmsub[123]+ss 32 on
Linux/x86_64 (-m64 -march=cascadelake)
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: regression
Assignee: unassigned at gcc dot gnu.org
Reporter: skpgkp2 at gmail dot com
CC: hjl.tools at gmail dot com
Target Milestone: ---
fma test fail on x86, when compiled with -march=cascadelake
Regression link:
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073111.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073112.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073113.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073114.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073115.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073116.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073117.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073118.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073119.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073120.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073121.html
https://gcc.gnu.org/pipermail/gcc-regression/2020-August/073122.html
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug regression/97018] [11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake)
2020-09-11 6:11 [Bug regression/97018] New: [r11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake) skpgkp2 at gmail dot com
@ 2020-09-11 6:31 ` rguenth at gcc dot gnu.org
2020-09-11 7:12 ` [Bug target/97018] " crazylht at gmail dot com
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-09-11 6:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97018
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |11.0
Last reconfirmed| |2020-09-11
Ever confirmed|0 |1
Summary|[r11 Regression] FAIL: |[11 Regression] FAIL:
|gcc.target/i386/l_fma_float |gcc.target/i386/l_fma_float
|_1.c scan-assembler-times |_1.c scan-assembler-times
|vfnmsub[123]+ss 32 on |vfnmsub[123]+ss 32 on
|Linux/x86_64 (-m64 |Linux/x86_64 (-m64
|-march=cascadelake) |-march=cascadelake)
Status|UNCONFIRMED |WAITING
Target| |x86_64-*-* i?86-*-*
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Do they PASS on the GCC 10 branch?
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/97018] [11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake)
2020-09-11 6:11 [Bug regression/97018] New: [r11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake) skpgkp2 at gmail dot com
2020-09-11 6:31 ` [Bug regression/97018] [11 " rguenth at gcc dot gnu.org
@ 2020-09-11 7:12 ` crazylht at gmail dot com
2020-09-11 16:52 ` cvs-commit at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: crazylht at gmail dot com @ 2020-09-11 7:12 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97018
Hongtao.liu <crazylht at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |crazylht at gmail dot com
--- Comment #2 from Hongtao.liu <crazylht at gmail dot com> ---
There's `-mtune=generic` in the testcase, which will imply 512-bit
vectorization on CLX, but testcase assume 256-bit vectorization.
Add `-mprefer-vector-width=256` or `-mno-avx512f`?
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/97018] [11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake)
2020-09-11 6:11 [Bug regression/97018] New: [r11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake) skpgkp2 at gmail dot com
2020-09-11 6:31 ` [Bug regression/97018] [11 " rguenth at gcc dot gnu.org
2020-09-11 7:12 ` [Bug target/97018] " crazylht at gmail dot com
@ 2020-09-11 16:52 ` cvs-commit at gcc dot gnu.org
2020-09-11 16:53 ` hjl.tools at gmail dot com
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-09-11 16:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97018
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:
https://gcc.gnu.org/g:40e99ed5f4e59c6d0a8e81cd6544c9b4e7ec2fe7
commit r11-3163-g40e99ed5f4e59c6d0a8e81cd6544c9b4e7ec2fe7
Author: Sunil K Pandey <skpgkp2@gmail.com>
Date: Thu Sep 10 23:17:59 2020 -0700
Fix fma test case [PR97018]
These tests are written for 256 bit vector. For -march=cascadelake,
vector size changed to 512 bit. It doubles the number of fma
instruction and test fail. Fix is to explicitly disable 512 bit
vector by passing additional option -mno-avx512f.
Tested on x86-64.
gcc/testsuite/ChangeLog:
PR target/97018
* gcc.target/i386/l_fma_double_1.c: Add option -mno-avx512f.
* gcc.target/i386/l_fma_double_2.c: Likewise.
* gcc.target/i386/l_fma_double_3.c: Likewise.
* gcc.target/i386/l_fma_double_4.c: Likewise.
* gcc.target/i386/l_fma_double_5.c: Likewise.
* gcc.target/i386/l_fma_double_6.c: Likewise.
* gcc.target/i386/l_fma_float_1.c: Likewise.
* gcc.target/i386/l_fma_float_2.c: Likewise.
* gcc.target/i386/l_fma_float_3.c: Likewise.
* gcc.target/i386/l_fma_float_4.c: Likewise.
* gcc.target/i386/l_fma_float_5.c: Likewise.
* gcc.target/i386/l_fma_float_6.c: Likewise.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/97018] [11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake)
2020-09-11 6:11 [Bug regression/97018] New: [r11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake) skpgkp2 at gmail dot com
` (2 preceding siblings ...)
2020-09-11 16:52 ` cvs-commit at gcc dot gnu.org
@ 2020-09-11 16:53 ` hjl.tools at gmail dot com
2020-09-11 17:07 ` skpgkp2 at gmail dot com
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: hjl.tools at gmail dot com @ 2020-09-11 16:53 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97018
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for GCC 11.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/97018] [11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake)
2020-09-11 6:11 [Bug regression/97018] New: [r11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake) skpgkp2 at gmail dot com
` (3 preceding siblings ...)
2020-09-11 16:53 ` hjl.tools at gmail dot com
@ 2020-09-11 17:07 ` skpgkp2 at gmail dot com
2020-09-11 17:20 ` hjl.tools at gmail dot com
2020-09-11 18:14 ` hjl.tools at gmail dot com
6 siblings, 0 replies; 8+ messages in thread
From: skpgkp2 at gmail dot com @ 2020-09-11 17:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97018
--- Comment #5 from Sunil Pandey <skpgkp2 at gmail dot com> ---
(In reply to Richard Biener from comment #1)
> Do they PASS on the GCC 10 branch?
GCC 10 branch has same issue. Same patch should be applied to GCC 10 too.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/97018] [11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake)
2020-09-11 6:11 [Bug regression/97018] New: [r11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake) skpgkp2 at gmail dot com
` (4 preceding siblings ...)
2020-09-11 17:07 ` skpgkp2 at gmail dot com
@ 2020-09-11 17:20 ` hjl.tools at gmail dot com
2020-09-11 18:14 ` hjl.tools at gmail dot com
6 siblings, 0 replies; 8+ messages in thread
From: hjl.tools at gmail dot com @ 2020-09-11 17:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97018
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|FIXED |---
Status|RESOLVED |REOPENED
Version|11.0 |10.2.0
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
GCC 10 has the same issue.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/97018] [11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake)
2020-09-11 6:11 [Bug regression/97018] New: [r11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake) skpgkp2 at gmail dot com
` (5 preceding siblings ...)
2020-09-11 17:20 ` hjl.tools at gmail dot com
@ 2020-09-11 18:14 ` hjl.tools at gmail dot com
6 siblings, 0 replies; 8+ messages in thread
From: hjl.tools at gmail dot com @ 2020-09-11 18:14 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97018
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Summary|[10/11 Regression] FAIL: |[11 Regression] FAIL:
|gcc.target/i386/l_fma_float |gcc.target/i386/l_fma_float
|_1.c scan-assembler-times |_1.c scan-assembler-times
|vfnmsub[123]+ss 32 on |vfnmsub[123]+ss 32 on
|Linux/x86_64 (-m64 |Linux/x86_64 (-m64
|-march=cascadelake) |-march=cascadelake)
Resolution|--- |FIXED
--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Sunil Pandey from comment #5)
> (In reply to Richard Biener from comment #1)
> > Do they PASS on the GCC 10 branch?
>
> GCC 10 branch has same issue. Same patch should be applied to GCC 10 too.
They have been failing on GCC 10 branch for a while. They aren't a recent
regression. No plan to fix.
^ permalink raw reply [flat|nested] 8+ messages in thread
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2020-09-11 6:11 [Bug regression/97018] New: [r11 Regression] FAIL: gcc.target/i386/l_fma_float_1.c scan-assembler-times vfnmsub[123]+ss 32 on Linux/x86_64 (-m64 -march=cascadelake) skpgkp2 at gmail dot com
2020-09-11 6:31 ` [Bug regression/97018] [11 " rguenth at gcc dot gnu.org
2020-09-11 7:12 ` [Bug target/97018] " crazylht at gmail dot com
2020-09-11 16:52 ` cvs-commit at gcc dot gnu.org
2020-09-11 16:53 ` hjl.tools at gmail dot com
2020-09-11 17:07 ` skpgkp2 at gmail dot com
2020-09-11 17:20 ` hjl.tools at gmail dot com
2020-09-11 18:14 ` hjl.tools at gmail dot com
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