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-rw-r--r--lib/CodeGen/SelectionDAG/SelectionDAG.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 08ef505bab..82a1746bb3 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -199,6 +199,8 @@ bool ISD::isScalarToVector(const SDNode *N) {
if (N->getOperand(0).getOpcode() == ISD::UNDEF)
return false;
unsigned NumElems = N->getNumOperands();
+ if (NumElems == 1)
+ return false;
for (unsigned i = 1; i < NumElems; ++i) {
SDValue V = N->getOperand(i);
if (V.getOpcode() != ISD::UNDEF)