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Commit 4c82daea authored by David Majnemer's avatar David Majnemer
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LoopRotate: Don't walk the uses of a Constant 

LoopRotate wanted to avoid live range interference by looking at the
uses of a Value in the loop latch and seeing if any lied outside of the
loop.  We would wrongly perform this operation on Constants.

This fixes PR22337.

llvm-svn: 227171
parent b9f60c17
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