FreddyLeaf wrote:

> > @RKSimon @phoebewang Thanks comments! knm has AVX512_VPOPCNTDQ, I guess we 
> > also require it work without avx512vl? And we are going to keep 
> > -march/mtune/mcpu support for knl/knm, but removing some specific ISA's 
> > intrinsic and lowering supports? Did I get your point wrong?
> 
> That's correct - we keep -march/mtune/mcpu support for knl/knm but reduce its 
> feature set to avx512f/avx512cd and we don't provide any support for xeon-phi 
> specific features (avx512pf etc.) apart from the minimal binutils/assembly 
> handling necessary.
> 
> If we keep support for VPOPCNTDQ on knm then yes we will need to allow 
> non-VLX handling, but I don't know much about general availability of knm 
> workstations (knl cpus/machines do turn up on ebay etc. quite frequently).

Thanks confirming! Modified the warning message and commit title.

https://github.com/llvm/llvm-project/pull/75580
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