[llvm] [Transforms][IPO] Add func suffix in ArgumentPromotion and DeadArgume… (PR #105742)

[via llvm-commits]

yonghong-song wrote:

> No test cases need to be updated? The naming convention may be depended upon later, so better cover it with a test case.

I ran through both clang and llvm test. All tests passed. I can add a selftest shortly. But it would be good to get some suggestions about what suffix we should use.

https://github.com/llvm/llvm-project/pull/105742