[llvm] [LICM] Preserve Disjoint flag on OR when hoisting. (PR #140266)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

I am wondering if there's any API we could come up with that would make it easier to avoid missing cases to update when we add new flags

https://github.com/llvm/llvm-project/pull/140266