[llvm] [BOLT] Speeding up CDSplit (PR #76164)

[Amir Ayupov via llvm-commits]

https://github.com/aaupov approved this pull request.

There are other changes besides avoiding splitting a likely fallthrough but I'm neutral about including them.

Please retitle as "[BOLT] Don't split likely fallthrough in CDSplit"

https://github.com/llvm/llvm-project/pull/76164