[PATCH] D134803: [LoopPeeling] Support peeling loops with non-latch exits

[Artem Belevich via Phabricator via llvm-commits]

tra added a comment.

This change may have caused the https://github.com/llvm/llvm-project/issues/28112 to show up again in a few of our tests (the timeout just mentioned by @bgraur) .
Unfortunately it's likely going to be hard to create a reduced reproducer as the issue tends to shows up in large code and often disappears in an unpredictable manner when code gets reduced.

Is there a way to disable this heuristic?

Another possible source of this problem is that the loop transformation didn't take into account 'convergent' attribute and may have duplicated code that should not have been. E.g. here's what we had to do in the past: https://reviews.llvm.org/D17518


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  https://reviews.llvm.org/D134803/new/

https://reviews.llvm.org/D134803