--- old/src/hotspot/share/opto/c2_globals.hpp	2019-01-30 18:16:07.000000000 -0800
+++ new/src/hotspot/share/opto/c2_globals.hpp	2019-01-30 18:16:07.000000000 -0800
@@ -516,7 +516,7 @@
           "Sets max value cached by the java.lang.Integer autobox cache")   \
           range(0, max_jint)                                                \
                                                                             \
-  experimental(bool, AggressiveUnboxing, false,                             \
+  experimental(bool, AggressiveUnboxing, true,                              \
           "Control optimizations for aggressive boxing elimination")        \
                                                                             \
   develop(bool, TracePostallocExpand, false, "Trace expanding nodes after"  \