diff --git a/llvm/include/llvm/CodeGen/SelectionDAGCSEMap.h b/llvm/include/llvm/CodeGen/SelectionDAGCSEMap.h
index c44d09b010ca179c9f400a22113ec565715dab8c..dd1071a3173d687fb8cc8cc87d566470f06e7d33 100644
--- a/llvm/include/llvm/CodeGen/SelectionDAGCSEMap.h
+++ b/llvm/include/llvm/CodeGen/SelectionDAGCSEMap.h
@@ -35,6 +35,7 @@ namespace llvm {
   class SelectionDAGCSEMap {
     void **Buckets;
     unsigned NumBuckets;  // Always a power of 2.
+    unsigned NumNodes;
   public:
     class NodeID;
     SelectionDAGCSEMap();