--- old/src/cpu/x86/vm/stubGenerator_x86_64.cpp	2017-02-13 23:17:53.718255063 +0100
+++ new/src/cpu/x86/vm/stubGenerator_x86_64.cpp	2017-02-13 23:17:53.654255251 +0100
@@ -1220,6 +1220,7 @@
       case BarrierSet::CardTableForRS:
       case BarrierSet::CardTableExtension:
       case BarrierSet::ModRef:
+      case BarrierSet::Epsilon:
         break;
       default:
         ShouldNotReachHere();
@@ -1281,6 +1282,9 @@
           __ jcc(Assembler::greaterEqual, L_loop);
         }
         break;
+      case BarrierSet::Epsilon:
+        // TODO: why are we here at all?
+        break;
       default:
         ShouldNotReachHere();