[PATCH v2] Support Intel AMX-COMPLEX

[Jiang, Haochen]

> That said, like AMX-FP16 this one also omits x86-64-amx-inval.s-like checks
> (that very testcase could easily be extended instead of making yet further
> tiny new ones); even the original AMX work checked only an AMX-INT8 insn
> there (I'm specifically after the all-operands-must- be-distinct checking), but
> not AMX-BF16. Would be nice if we could gain additions for both (all three) in
> a subsequent patch.

I will add those inval AMX testcases just like the existing ones in these days.

Thx,
Haochen

> 
> Jan