[PATCH] BZ #14059 - HAS_FMA4 check needs to also check for AVX
Jeff Law
law@redhat.com
Mon May 14 16:28:00 GMT 2012
On 05/14/2012 02:12 AM, Andreas Jaeger wrote:
> On Monday, May 14, 2012 09:52:17 Andreas Jaeger wrote:
>> Btw. here's a small test program to show that the values are setup
>> correctly.
>>
>> Currently it fails on my system (/proc/cpuinfo contains avx but
>> glibc test reports it does not).
>>
>> Hope it's usefull,
>
> Yes, was helpfull for me;)
>
> I found the problem, the assignments to set the bits are wrong.
>
> Instead of
> __cpu_features.feature[index_AVX_Usable] = 1;
>
> use
> __cpu_features.feature[index_AVX_Usable]
> |= bit_AVX_Usable;
>
> The same for the FMA4 test.
FWIW, twiddled the Fedora patch to fix this bug... Everything is still
happy.
Jeff
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