https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #21 from Ferruh YIGIT ---
(In reply to Jakub Jelinek from comment #19)
> Upstream 2.31 and 2.31.1 is affected too, but 2.31 branch starting with
> August 2018 is not affected. As the fix has been backported also to 2.30
> branch, I g
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #20 from Ferruh YIGIT ---
Confirmed that issue is fixed with the latest assembler [1].
[1]
as --version
GNU assembler (GNU Binutils) 2.32.51.20190410?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #19 from Jakub Jelinek ---
Upstream 2.31 and 2.31.1 is affected too, but 2.31 branch starting with August
2018 is not affected. As the fix has been backported also to 2.30 branch, I
guess 2.30 is affected too, 2.32 is not affected.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #18 from Ferruh YIGIT ---
(In reply to Nick Clifton from comment #17)
> (In reply to Jakub Jelinek from comment #8)
> > Fedora binutils-2.31.1-24.fc29.x86_64 has the bug, haven't checked upstream
> > 2.31.1 nor which exact patch fixed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
Nick Clifton changed:
What|Removed |Added
CC||nickc at gcc dot gnu.org
--- Comment #17
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
Martin Liška changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
See Also|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #15 from Martin Liška ---
Fixed in bintuils with:
commit 629cfaf1b0fbb32a985607c774bd8e7870b9fa94 (HEAD, refs/bisect/bad)
Author: Jan Beulich
Date: Mon Jul 30 17:25:05 2018 +0200
x86: don't mistakenly scale non-8-bit displace
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #14 from Martin Liška ---
$ as --version
GNU assembler (GNU Binutils; openSUSE Tumbleweed) 2.32
is fine:
$ as --64 avx512.s -o avx512.o && objdump -S avx512.o | grep gather
234b: 62 f2 fd 2a 91 04 0dvpgatherqq 0x8(,%ym
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #13 from Ferruh YIGIT ---
(In reply to Hongtao.liu from comment #6)
> (In reply to Ferruh YIGIT from comment #1)
> > Created attachment 46115 [details]
> > 19.05-rc1 -mno-avx512f gcc build on skylake
> >
> > The build is done with ch
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #12 from Ferruh YIGIT ---
Created attachment 46128
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46128&action=edit
19.05-rc1 -mno-avx512f gcc build on skylake .s file via --save-temp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #11 from Ferruh YIGIT ---
Created attachment 46127
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46127&action=edit
19.05-rc1 -mno-avx512f gcc build on skylake .o file
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #10 from Ferruh YIGIT ---
Created attachment 46126
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46126&action=edit
19.05-rc1 default gcc build (avx512 enabled) on skylake .s file via
--save-temps
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #9 from Ferruh YIGIT ---
Created attachment 46125
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46125&action=edit
19.05-rc1 default gcc build (avx512 enabled) on skylake .o file
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #8 from Jakub Jelinek ---
Fedora binutils-2.31.1-24.fc29.x86_64 has the bug, haven't checked upstream
2.31.1 nor which exact patch fixed it. But as I said, there is no testcase
coverage for this, so it might break any time again.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #7 from Jakub Jelinek ---
Looks like gas bug to me:
vpgatherqq 8(,%ymm1,1), %ymm0{%k2}
vpgatherqq 8(%rcx,%ymm1,1), %ymm0{%k2}
vpgatherqq %ymm2, 8(,%ymm1,1), %ymm0
vpgatherqq %ymm2, 8(%rcx,%ymm1,1), %ymm0
when assem
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #6 from Hongtao.liu ---
(In reply to Ferruh YIGIT from comment #1)
> Created attachment 46115 [details]
> 19.05-rc1 -mno-avx512f gcc build on skylake
>
> The build is done with changing the lib/librte_kni/Makefile as following:
>
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #5 from Ferruh YIGIT ---
Tested with latest gcc [1], same output.
[1] Compiled from source:
gcc (GCC) 9.0.1 20190409 (experimental)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #4 from Ferruh YIGIT ---
Created attachment 46117
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46117&action=edit
.s file generated by "--save-temps" param
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #3 from Ferruh YIGIT ---
Created attachment 46116
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46116&action=edit
.i file generated by "--save-temps" param
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #2 from Ferruh YIGIT ---
While preparing the support files for this report, via --save-temps, recognized
that generated .s file output is a little different, and correct assuming the
suspicion on source of the failure was right:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #1 from Ferruh YIGIT ---
Created attachment 46115
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=46115&action=edit
19.05-rc1 -mno-avx512f gcc build on skylake
The build is done with changing the lib/librte_kni/Makefile as follo
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