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Commit 1ecdedad authored by Michael Zolotukhin's avatar Michael Zolotukhin
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[LoopUnrollAnalyzer] Fix a crash in analyzeLoopUnrollCost. 

Condition might be simplified to a Constant, but it doesn't have to be
ConstantInt, so we should dyn_cast, instead of cast.

This fixes PR27886.

llvm-svn: 270924
parent 7509d54b
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