[llvm] [FuncSpec] Update function specialization to handle phi-chains (PR #71442)

[Mats Petersson via llvm-commits]

Leporacanthicus wrote:

Closing this PR, a new PR at https://github.com/llvm/llvm-project/pull/72903

Thanks for the feedback here.

https://github.com/llvm/llvm-project/pull/71442