[llvm] [PseudoProbe] Add PseudoProbeDescUpdatePass (PR #99839)

[via llvm-commits]

https://github.com/WenleiHe requested changes to this pull request.

I'm not sure if this is the right fix. PGO generally operates with pre-split functions. So ideally we want all the funclets to map back to the same original functions as opposed to using separate functions to represent funclets. 

Compiler generated functions are not unique to partial inline. Coroutine split is another example. How is that handled and how is partial inline different? cc @wlei-llvm 

https://github.com/llvm/llvm-project/pull/99839