1 files changed, 6 insertions, 0 deletions
diff --git a/src/main/scala/firrtl/Utils.scala b/src/main/scala/firrtl/Utils.scala
index 71a4d3ef..bb814051 100644
--- a/src/main/scala/firrtl/Utils.scala
+++ b/src/main/scala/firrtl/Utils.scala
@@ -509,10 +509,16 @@ object Utils extends LazyLogging {
     case Default => Flip
     case Flip => Default
   }
+  // Input  <-> SourceFlow <-> Flip
+  // Output <-> SinkFlow   <-> Default
   def to_dir(g: Flow): Direction = g match {
     case SourceFlow => Input
     case SinkFlow => Output
   }
+  def to_dir(o: Orientation): Direction = o match {
+    case Flip => Input
+    case Default => Output
+  }
   def to_flow(d: Direction): Flow = d match {
     case Input => SourceFlow
     case Output => SinkFlow