[llvm] [AMDGPU] (x or y) xor -1 -> x nor y (PR #130264)

[Ana Mihajlovic via llvm-commits]

mihajlovicana wrote:

https://github.com/llvm/llvm-project/pull/132770 <- since this was merged I am now able to put ballot tests for both wave32 and wave64 in the same file

https://github.com/llvm/llvm-project/pull/130264