--- old/src/hotspot/cpu/aarch64/c1_globals_aarch64.hpp	2019-01-24 17:46:48.007292038 +0000
+++ new/src/hotspot/cpu/aarch64/c1_globals_aarch64.hpp	2019-01-24 17:46:47.315261284 +0000
@@ -40,7 +40,7 @@
 define_pd_global(bool, PreferInterpreterNativeStubs, false);
 define_pd_global(bool, ProfileTraps,                 false);
 define_pd_global(bool, UseOnStackReplacement,        true );
-define_pd_global(bool, TieredCompilation,            false);
+define_pd_global(bool, TieredCompilation,            true);
 #ifdef BUILTIN_SIM
 // We compile very aggressively with the builtin simulator because
 // doing so greatly reduces run times and tests more code.