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Summary: The checking pointer grouping algorithm assumes that the starts/ends of the pointers are well formed (start <= end). The runtime memory checking algorithm also assumes this by doing: start0 < end1 && start1 < end0 to detect conflicts. This check only works if start0 <= end0 and start1 <= end1. This change correctly orders the interval ends by either checking the stride (if it is constant) or by using min/max SCEV expressions. Reviewers: anemet, rengolin Subscribers: rengolin, llvm-commits Differential Revision: http://reviews.llvm.org/D11149 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242400 91177308-0d34-0410-b5e6-96231b3b80d8
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