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Summary: SimplifyIndVar may introduce zext instructions to widen arguments of the loop exit check. They should not prevent us from splitting the loop at the induction variable, but maybe the check should be more conservative, e.g. making sure it only extends arguments used by a comparison? Reviewers: karthikthecool, mcrosier, mzolotukhin Reviewed By: mcrosier Subscribers: mzolotukhin, llvm-commits Differential Revision: https://reviews.llvm.org/D34879 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@311783 91177308-0d34-0410-b5e6-96231b3b80d8