[llvm] [AMDGPU][True16][CodeGen] 16bit inline constant check for COPY (PR #150317)

[Ivan Kosarev via llvm-commits]

kosarev wrote:

> It seems we don't have any lit test that generates a COPY with an inline constant.

If this is also the case downstream, including at the revision where this logic was brought in, it should be removed there.

https://github.com/llvm/llvm-project/pull/150317