[PATCH 1/2] Add _arch_/_cpu_ to index_*/bit_* in x86 cpu-features.h

[Florian Weimer]

* H. J. Lu:

> ../sysdeps/x86_64/tst-audit10.c: In function ‘avx512_enabled’:
> ../sysdeps/x86_64/tst-audit10.c:34:15: error: ‘bit_AVX512F’ undeclared
> (first use in this function)
>    if (!(ebx & bit_AVX512F))
>
> which is changed by
>
> ommit 3c0f7407eedb524c9114bb675cd55b903c71daaa
> Author: Florian Weimer <fweimer@redhat.com>
> Date:   Mon Mar 7 16:00:25 2016 +0100
>
>     tst-audit4, tst-audit10: Compile AVX/AVX-512 code separately [BZ #19269]
>
>     This ensures that GCC will not use unsupported instructions before
>     the run-time check to ensure support.
>
> bit_AVX512F is defined in <cpuid.h>  from GCC.  Apparently, your GCC
> doesn't have it.  You can try this patch.

Roland committed a fix which included <cpu-features.h> (commit
3bd80c0de2f8e7ca8020d37739339636d169957e) in tst-audit10.c I assumed
that this addressed this particular build failure (it does for me with
GCC 4.7).

Ah, you removed that flag in 6aa3e97e2530f9917f504eb4146af119a3f27229.
So you need to adjust tst-audit10 for this change.

> -tests += tst-audit3 tst-audit4 tst-audit5 tst-audit6 tst-audit7 tst-audit10
> +tests += tst-audit3 tst-audit4 tst-audit5 tst-audit6 tst-audit7
> +
> +ifeq (yes,$(config-cflags-avx512))
> +tests += tst-audit10
> +endif

The test should be marked as UNSUPPORTED instead.