[llvm] [AMDGPU] fix SIPeepholeSDWA optimization for fp16 (PR #109395)

[Pankaj Dwivedi via llvm-commits]

PankajDwivedi-25 wrote:

> Yes, VOPC instructions are available in a VOP3 form as well.

Thank you for your feedback!

It's a weird case here then. I have no clue what is wrong with int8 sorting. Why some of the output values are becoming -1's?
all I can see in the final ASM diff is the folding of bfe into sdwa.

https://github.com/llvm/llvm-project/pull/109395