--- old/src/hotspot/share/opto/opcodes.cpp	2018-06-01 22:30:02.680243689 +0200
+++ new/src/hotspot/share/opto/opcodes.cpp	2018-06-01 22:30:02.427232768 +0200
@@ -28,6 +28,7 @@
 // Build a table of class names as strings.  Used both for debugging printouts
 // and in the ADL machine descriptions.
 #define macro(x) #x,
+#define optionalmacro(x) macro(x)
 const char *NodeClassNames[] = {
   "Node",
   "Set",