diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index 6b47e1808f0..12f12bd22c5 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -68,6 +68,8 @@ unsigned FastISel::getRegForValue(Value *V,
     BuildMI(MBB, TII.get(TargetInstrInfo::IMPLICIT_DEF), Reg);
     return Reg;
   }
+  
+  return 0;
 }
 
 /// UpdateValueMap - Update the value map to include the new mapping for this