[llvm] [Draft] Support save/restore point splitting in shrink-wrap (PR #119359)

[Elizaveta Noskova via llvm-commits]

enoskova-sc wrote:

@asb, I'm a bit sick, so I have to delay publishing the updated version of patch with the relaxed restrictions. I plan to update PR this or next week.

https://github.com/llvm/llvm-project/pull/119359