--- a/src/hotspot/share/compiler/compilerDirectives.hpp	Mon Jun 10 05:09:52 2019 +0200
+++ b/src/hotspot/share/compiler/compilerDirectives.hpp	Thu Feb 14 14:54:05 2019 +0100
@@ -67,7 +67,7 @@
     cflags(CloneMapDebug,           bool, false, CloneMapDebug) \
     cflags(IGVPrintLevel,           intx, PrintIdealGraphLevel, IGVPrintLevel) \
     cflags(MaxNodeLimit,            intx, MaxNodeLimit, MaxNodeLimit) \
-ZGC_ONLY(cflags(ZOptimizeLoadBarriers, bool, ZOptimizeLoadBarriers, ZOptimizeLoadBarriers))
+ZGC_ONLY(cflags(ZTraceLoadBarriers, bool, false, ZTraceLoadBarriers))
 #else
   #define compilerdirectives_c2_flags(cflags)
 #endif