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Subject: Re: [PATCH 1/2] Add _arch_/_cpu_ to index_*/bit_* in x86
 cpu-features.h
To: Florian Weimer <fw@deneb.enyo.de>, "H.J. Lu" <hjl.tools@gmail.com>
References: <1457049161-13783-1-git-send-email-hjl.tools@gmail.com>
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Cc: Roland McGrath <roland@hack.frob.com>,
        GNU C Library <libc-alpha@sourceware.org>
From: Florian Weimer <fweimer@redhat.com>
Message-ID: <56F5158A.5040302@redhat.com>
Date: Fri, 25 Mar 2016 10:40:00 -0000
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On 03/12/2016 12:06 AM, Florian Weimer wrote:

> This would seem more reasonable:
> 
> diff --git a/sysdeps/x86_64/tst-audit10.c b/sysdeps/x86_64/tst-audit10.c
> index a487b40..0df2275 100644
> --- a/sysdeps/x86_64/tst-audit10.c
> +++ b/sysdeps/x86_64/tst-audit10.c
> @@ -17,13 +17,13 @@
>     <http://www.gnu.org/licenses/>.  */
>  
>  #include <cpuid.h>
> -#include <cpu-features.h>
>  
>  int tst_audit10_aux (void);
>  
>  static int
>  avx512_enabled (void)
>  {
> +#ifdef bit_AVX512F
>    unsigned int eax, ebx, ecx, edx;
>  
>    if (__get_cpuid (1, &eax, &ebx, &ecx, &edx) == 0
> @@ -38,6 +38,9 @@ avx512_enabled (void)
>  
>    /* Verify that ZMM, YMM and XMM states are enabled.  */
>    return (eax & 0xe6) == 0xe6;
> +#else
> +  return 0;
> +#endif
>  }
>  
>  static int

I have committed this, after testing compilation with GCC 4.7 and GCC
5.3.  Bug 19860 mentions a second compilation error, which I did not
see.  I'm waiting for details on that one, maybe it was a spurious issue.

Florian