--- old/src/hotspot/cpu/ppc/globals_ppc.hpp	2018-11-21 23:17:33.193500493 -0600
+++ new/src/hotspot/cpu/ppc/globals_ppc.hpp	2018-11-21 23:17:32.603520022 -0600
@@ -126,6 +126,9 @@
   product(bool, UseCountLeadingZerosInstructionsPPC64, true,                \
           "Use count leading zeros instructions.")                          \
                                                                             \
+  product(bool, UseCountTrailingZerosInstructionsPPC64, false,              \
+          "Use count trailing zeros instructions.")                         \
+                                                                            \
   product(bool, UseExtendedLoadAndReserveInstructionsPPC64, false,          \
           "Use extended versions of load-and-reserve instructions.")        \
                                                                             \