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-rw-r--r--llvm/lib/Transforms/Utils/BasicBlockUtils.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp b/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
index 8f59913e14b..056753f7ddb 100644
--- a/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
+++ b/llvm/lib/Transforms/Utils/BasicBlockUtils.cpp
@@ -316,6 +316,7 @@ static void UpdateAnalysisInformation(BasicBlock *OldBB, BasicBlock *NewBB,
if (!LI)
return;
+ assert(DT && "DT should be available to update LoopInfo!");
Loop *L = LI->getLoopFor(OldBB);
// If we need to preserve loop analyses, collect some information about how
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