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-rw-r--r--lib/Transforms/Scalar/LoopRotation.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/LoopRotation.cpp b/lib/Transforms/Scalar/LoopRotation.cpp
index 2c76706..f8122bf 100644
--- a/lib/Transforms/Scalar/LoopRotation.cpp
+++ b/lib/Transforms/Scalar/LoopRotation.cpp
@@ -418,6 +418,9 @@ bool LoopRotate::rotateLoop(Loop *L) {
for (unsigned I = 0, E = HeaderChildren.size(); I != E; ++I)
DT->changeImmediateDominator(HeaderChildren[I], OrigPreheaderNode);
+ assert(DT->getNode(Exit)->getIDom() == OrigPreheaderNode);
+ assert(DT->getNode(NewHeader)->getIDom() == OrigPreheaderNode);
+
// Update OrigHeader to be dominated by the new header block.
DT->changeImmediateDominator(OrigHeader, OrigLatch);
}