[llvm] [AMDGPU] Remove the AnnotateKernelFeatures pass (PR #130198)

[Jun Wang via llvm-commits]

jwanggit86 wrote:

> Should also add a test for what happens on undefined behavior, and flat_scratch does end up really getting used. We shouldn't have any verifier errors or anything

Please elaborate on "undefined behavior".

https://github.com/llvm/llvm-project/pull/130198