[llvm] [SimplifyCFG] handle monotonic wrapped case for D150943 (PR #65882)

[David Koloski via llvm-commits]

djkoloski wrote:

I'm having trouble backporting this to 17.x. I opened #66373 to backport it but it got closed automatically because the 17.x branch does not have the latest changes which remove the repo lockdown. So I opened #66375 to disable the repo lockdown on the 17.x branch but that was also closed automatically (I didn't know that GHA would run using the in-tree actions instead of the ones in the PR). Any suggestions? Should I go through Phabricator for this?

https://github.com/llvm/llvm-project/pull/65882