[PATCH v1 1/1] Set Prefer_No_AVX512 flag for hygon platform

[Florian Weimer]

* Jiamei Xie:

> Benchmarks indicate evex can be more profitable on Hygon hardware
> than AVX512. So add Prefer_No_AVX512 to make it run with evex.
>
> Signed-off-by: Li jing <lijing@hygon.cn>
> Signed-off-by: Xie jiamei <xiejiamei@hygon.cn>
> ---
>  sysdeps/x86/cpu-features.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
> index b67ef541dd..d0d6d9305a 100644
> --- a/sysdeps/x86/cpu-features.c
> +++ b/sysdeps/x86/cpu-features.c
> @@ -1131,6 +1131,10 @@ disable_tsx:
>        update_active (cpu_features);
>      }
>  
> +   /* Benchmarks indicate evex can be more profitable on Hygon hardware than AVX512 */
> +  if (model == 0x7)
> +    cpu_features->preferred[index_arch_Prefer_No_AVX512] |= bit_arch_Prefer_No_AVX512;
> +
>    /* Support i586 if CX8 is available.  */
>    if (CPU_FEATURES_CPU_P (cpu_features, CX8))
>      cpu_features->preferred[index_arch_I586] |= bit_arch_I586;

Please wrap these lines so that they are not longer than 79 characters.
And surely this must be under the HygonGenuine condition?

Thanks,
Florian