[llvm] [LoopUnswitch] Allow i1 truncs in loop unswitch (PR #89738)

[David Sherwood via llvm-commits]

https://github.com/david-arm commented:

Thanks for the nice fix @MDevereau! I just had a couple of minor comments, but other than that it looks reasonable to me.

https://github.com/llvm/llvm-project/pull/89738