[PATCH] tst-audit4, tst-audit10: Compile AVX/AVX-512 code separately [BZ #19269]

[Richard Henderson]

On 03/07/2016 09:58 AM, Florian Weimer wrote:
> This ensures that GCC will not use unsupported instructions before the
> run-time check to ensure support.
>
> According to the GCC documentation, "avx" and "avx512f" are not
> currently supported as function target attributes, so this seems the
> most conservative fix.

Someone forgot to update the documentation.

     IX86_ATTR_ISA ("avx",       OPT_mavx),

present since 342ad2d6a (2008-12-08), in gcc 4.4,

     IX86_ATTR_ISA ("avx2",      OPT_mavx2),

present since d2a15bb86 (2011-08-18), in gcc 4.7,

     IX86_ATTR_ISA ("avx512f",   OPT_mavx512f),
     IX86_ATTR_ISA ("avx512pf",  OPT_mavx512pf),
     IX86_ATTR_ISA ("avx512er",  OPT_mavx512er),
     IX86_ATTR_ISA ("avx512cd",  OPT_mavx512cd),
     IX86_ATTR_ISA ("avx512dq",  OPT_mavx512dq),
     IX86_ATTR_ISA ("avx512bw",  OPT_mavx512bw),
     IX86_ATTR_ISA ("avx512vl",  OPT_mavx512vl),

present since e13e1b39a (2013-08-22), in gcc 4.9.


r~