--- a/hotspot/src/share/vm/adlc/output_h.cpp	Thu Nov 21 18:29:34 2013 -0800
+++ b/hotspot/src/share/vm/adlc/output_h.cpp	Thu Nov 21 19:00:57 2013 -0800
@@ -26,7 +26,11 @@
 #include "adlc.hpp"
 
 // The comment delimiter used in format statements after assembler instructions.
+#if defined(PPC64)
+#define commentSeperator "\t//"
+#else
 #define commentSeperator "!"
+#endif
 
 // Generate the #define that describes the number of registers.
 static void defineRegCount(FILE *fp, RegisterForm *registers) {