[llvm] [LoopUnroll] Allow expensive trip count emitting which is estimated to be infinite (PR #79869)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

Makes sense conceptually. I wonder whether it would make sense to integrate this in getLoopEstimatedTripCount(), by returning UINT_MAX in this case?

https://github.com/llvm/llvm-project/pull/79869