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Author SHA1 Message Date
Andrew Wei ea7ab5a42c [IndVarSimplify] Notify top most loop to drop cached exit counts 
Some nested loops may share the same ExitingBB, so after we finishing FoldExit,
we need to notify OuterLoop and SCEV to drop any stored trip count.

Patched by: guopeilin
Reviewed By: mkazantsev

Differential Revision: https://reviews.llvm.org/D91325
 2020-11-19 15:37:54 +08:00