[clang] [llvm] [AMDGPU][clang][CodeGen][opt] Add late-resolved feature identifying predicates (PR #134016)

[Alex Voicu via llvm-commits]

AlexVlx wrote:

> This is worth a release note item.

Indeed! I botched moving the changes from my internal scratchpad, and the rel notes got lost; fixing.

https://github.com/llvm/llvm-project/pull/134016