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Florian Hahn
95265ffb1f
As preparation for LoopInterchange becoming a loop pass, it needs to preserve ScalarEvolution. Even though interchanging should not change the trip count of the loop, it modifies loop entry, latch and exit blocks. I added -verify-scev to some loop interchange tests, but the verification does not catch problems caused by missing invalidation of SE in loop interchange, as the trip counts themselves do not change. So there might be potential to make the SE verification covering more stuff in the future. Reviewers: mkazantsev, efriedma, karthikthecool Reviewed By: efriedma Differential Revision: https://reviews.llvm.org/D52026 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@342209 91177308-0d34-0410-b5e6-96231b3b80d8
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