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

[via llvm-commits]

mconst wrote:

The buildbot failure looks like it's from the bad instruction you pointed out earlier (which actually gets detected automatically when expensive checks are enabled).  I think the fix should be pretty simple -- I'll try writing up a PR for it soon.

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