diff --git a/lib/Target/IA64/IA64ISelLowering.h b/lib/Target/IA64/IA64ISelLowering.h
index 5b33348ced1..924691d70c9 100644
--- a/lib/Target/IA64/IA64ISelLowering.h
+++ b/lib/Target/IA64/IA64ISelLowering.h
@@ -38,6 +38,10 @@ namespace llvm {
       /// operand, producing an f64 value containing the integer representation
       /// of that FP value.
       FCTIDZ, FCTIWZ,
+      
+      /// GETFD - the getf.d instruction takes a floating point operand and
+      /// returns its 64-bit memory representation as an i64
+      GETFD
     };
   }