[llvm] [SimpleLoopUnswitch] Fix exponential unswitch (PR #66883)

[Florian Hahn via llvm-commits]

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@@ -3768,7 +3775,7 @@ bool SimpleLoopUnswitchLegacyPass::runOnLoop(Loop *L, LPPassManager &LPM) {
       // If the current loop has been unswitched using a partially invariant
       // condition, we should not re-add the current loop to avoid unswitching
       // on the same condition again.
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fhahn wrote:

Comment above needs updating

https://github.com/llvm/llvm-project/pull/66883