What's the oldest Mac targeted by D programmers?

[Walter Bright via Digitalmars-d]

On 12/6/2016 1:31 AM, Johan Engelen wrote:
> AVX2 is not listed in machdep.cpu.features, at least not on my machine; you need
> to look in the machdep.cpu.leaf7_features list.
>
> https://csharpmulticore.blogspot.nl/2014/12/how-to-check-intel-avx2-support-on-mac-os-x-haswell.html

Bummer. Seems like I have nothing that does AVX2.

Worse, my motherboard will not support the AMD Carrizo processor (the only AMD 
AVX2 one) so upgrading means a new computer.

Grumble, grumble.