[compiler-rt] [llvm] [Transforms][IPO] Add func suffix in ArgumentPromotion and DeadArgumentElimination (PR #109899)

[Matt Arsenault via llvm-commits]

arsenm wrote:

>  So users will know that function signature get changed

Generally users wouldn't need to know that; but they would know from the signature itself? 

https://github.com/llvm/llvm-project/pull/109899