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Commit b6d40067 authored by Max Kazantsev's avatar Max Kazantsev
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[SCEV] Enhance SCEVFindUnsafe for division 

This patch allows SCEVFindUnsafe algorithm to tread division by any non-positive
value as safe. Previously, it could only recognize non-zero constants.

Differential Revision: https://reviews.llvm.org/D39228

llvm-svn: 316568
parent 0c7cd071
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