https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90028
--- Comment #6 from Hongtao.liu <crazylht at gmail dot com> ---
(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:
>
> + CFLAGS += -mno-avx512f
(In reply to Ferruh YIGIT from comment #5)
> Tested with latest gcc [1], same output.
>
> [1] Compiled from source:
> gcc (GCC) 9.0.1 20190409 (experimental)
I built rte_kni.i with latest gcc and got
...
vmovdqu64 (%rsi,%rax), %zmm1
kmovw %k1, %k2
vpgatherqq 8(,%zmm1,1), %zmm0{%k2}
vpaddq %zmm1, %zmm0, %zmm0
kmovw %k1, %k3
vpgatherqq 0(,%zmm1,1), %zmm2{%k3}
vpsubq %zmm2, %zmm0, %zmm0
vmovdqu64 %zmm0, (%rcx,%rax)
...
Can't reproduce the issue you mentioned.
Could you please upload *.s and *.o with both version(with and without
-mno-avx512f).
