diff --git a/lib/Target/TargetSelectionDAG.td b/lib/Target/TargetSelectionDAG.td
index fd8526f3d27..5395c438954 100644
--- a/lib/Target/TargetSelectionDAG.td
+++ b/lib/Target/TargetSelectionDAG.td
@@ -184,6 +184,7 @@ class SDNode<string opcode, SDTypeProfile typeprof,
 def set;
 def node;
 def srcvalue;
+def FLAG;
 
 def imm        : SDNode<"ISD::Constant"  , SDTIntLeaf , [], "ConstantSDNode">;
 def vt         : SDNode<"ISD::VALUETYPE" , SDTOther   , [], "VTSDNode">;