[llvm] [X86] Fix overflow with large stack probes on x86-64 (PR #113219)

[via llvm-commits]

mconst wrote:

I should have the PR ready within a couple of hours at the latest, although it'll probably still take time for it to be reviewed and merged.  If that's too long, feel free to revert this for now!

Sure, I'll add `-verify-machineinstrs` to the test files.

https://github.com/llvm/llvm-project/pull/113219