[llvm] [Passes] Run SimpleLoopUnswitch after introducing invariant branches. (PR #81271)

[Florian Hahn via llvm-commits]

https://github.com/fhahn commented:

> Could you please resolve the comments regarding extra comments and check whether this patch fixes https://github.com/llvm/llvm-project/issues/85551 (and if so add another test)?

Thanks, I added the comment and check that it fixes  https://github.com/llvm/llvm-project/issues/85551. Added a test case in 94ed57dab64ccb248a342a91957f390209c5c7ce.

https://github.com/llvm/llvm-project/pull/81271