[PATCH] D102615: [LoopDeletion] Break backedge if we can prove that the loop is exited on 1st iteration

Max Kazantsev via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Wed May 26 01:59:26 PDT 2021


mkazantsev added a comment.

@uabelho Looking into your example, I don't think enough evidence it's a miscompile. Your test has non-side-effecting infinite loop, which has undefined behavior. So it's legal to make the replacement. Can you construct the example without an infinite loop?


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