diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 076684993ab..a8621a89a8a 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -9263,7 +9263,6 @@ static SDValue partitionShuffleOfConcats(SDNode *N, SelectionDAG &DAG) {
     }
 
     if (NoUndef) {
-      unsigned Begin = I * NumElemsPerConcat;
       if (SVN->getMaskElt(Begin) % NumElemsPerConcat != 0)
         return SDValue();