--- old/src/share/vm/runtime/globals.hpp	2013-05-14 08:14:53.000000000 -0400
+++ new/src/share/vm/runtime/globals.hpp	2013-05-14 08:14:52.000000000 -0400
@@ -539,6 +539,9 @@
   product(bool, UseAES, false,                                               \
           "Control whether AES instructions can be used on x86/x64")        \
                                                                             \
+  develop(bool, UseCLMUL, false,                                            \
+          "Control whether CLMUL instructions can be used on x86/x64")      \
+                                                                            \
   product(uintx, LargePageSizeInBytes, 0,                                   \
           "Large page size (0 to let VM choose the page size")              \
                                                                             \