Enable Intel AVX512_FP16 instructions and test

[Cui, Lili]

> On 05.08.2021 14:43, Cui, Lili wrote:
> >>>>> As to the message (I'm sorry for adjusting my prior suggestion),
> >>>>> how about "destination must be distinct from source registers"?
> >>>>>
> >>>> I am confused here, do I need to make some changes ?
> >>>
> >>> Well - use the new suggested text?
> >>
> >> And just to clarify - ideally with these two remaining small items
> >> addressed, I'm okay with the patch now; afaic no need for another
> >> re-posting before you commit the result. I may subsequently try to
> >> deal with the two items you indicated you wouldn't want to address.
> >>
> > Thank you Jan, I know one item that you want to change is "DistinctDest",
> you don't like to add this new insn attribute, maybe you have a better way to
> deal with it. what's the other one?
> 
> The other one was the (afaict) unnecessary decoding of EVEX.W in the
> disassembler for (still) a number of insns.
> 
Get it, really thank you for helping to find many problems with the AVX512_FP16 patch, and also will help make some changes in the future. I will pay attention to your changes, thanks.

Lili.