[llvm] [AMDGPU][True16][CodeGen] remove 32 bit and/or/xor pattern from true16 (PR #131634)

[Joe Nash via llvm-commits]

https://github.com/Sisyph requested changes to this pull request.

This patch doesn't make sense to me. The Pats are for UnformUnaryFrag, so they would go to the SALU, and shouldn't have anything to do with True16. In all the test cases this is turning SALUs into VALUs, which is not good. 

https://github.com/llvm/llvm-project/pull/131634