[llvm] [AMDGPU] Detect kills in register sets when trying to form V_CMPX instructions. (PR #68293)

[Thomas Symalla via llvm-commits]

tsymalla wrote:

> Can you just drop kill flags without prejudice? We shouldn't really need them anymore at this point

I am not sure about that.

https://github.com/llvm/llvm-project/pull/68293