[llvm] [SystemZ] Add shrink-wrapping support for ELF prologue/epilogue (PR #225240)

[via llvm-commits]

================

----------------
MarkVeerasingam wrote:

Resolved.
You are correct, other architectures dont do this. I removed the block and everything seemed to be good on my end, tested with check-llvm and ran `shrinkwrap.ll` (contains `-verify-machineinstrs` flag).

https://github.com/llvm/llvm-project/pull/225240