[D-runtime] Need support in core.cpuid for AVX detection

[Don Clugston]

On 15 January 2012 23:11, Alex <xtzgzorex at gmail.com> wrote:
> There seems to be commented out support for detecting AVX already:
> https://github.com/D-Programming-Language/druntime/blob/master/src/core/cpuid.d#L275
>
> Any reason this isn't enabled?

I actually wrote that code before any AVX processors had ever been
released. So it was entirely speculative.

>
> Regards,
> Alex
>
> On Sun, Jan 15, 2012 at 11:08 PM, Alex <xtzgzorex at gmail.com> wrote:
>> For what it's worth, bit 28 of ECX indicates whether the CPU has AVX
>> (for the cpuid instruction).
>>
>> Regards,
>> Alex
>>
>> On Sun, Jan 15, 2012 at 11:04 PM, Walter Bright <walter at digitalmars.com> wrote:
>>> http://en.wikipedia.org/wiki/Advanced_Vector_Extensions#CPUs_with_AVX
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