src/hotspot/cpu/x86/globals_x86.hpp

@@ -100,12 +100,12 @@
 #else
 // get_thread() is slow on linux 32 bit, therefore off by default
 define_pd_global(bool, ThreadLocalHandshakes, false);
 #endif
 
-define_pd_global(bool, ValueTypePassFieldsAsArgs, LP64_ONLY(false) NOT_LP64(false));
-define_pd_global(bool, ValueTypeReturnedAsFields, LP64_ONLY(false) NOT_LP64(false));
+define_pd_global(bool, ValueTypePassFieldsAsArgs, LP64_ONLY(true) NOT_LP64(false));
+define_pd_global(bool, ValueTypeReturnedAsFields, LP64_ONLY(true) NOT_LP64(false));
 
 #define ARCH_FLAGS(develop, \
                    product, \
                    diagnostic, \
                    experimental, \