--- a/src/hotspot/cpu/aarch64/gc/shared/barrierSetAssembler_aarch64.cpp	Wed Jun 13 06:35:04 2018 +0200
+++ b/src/hotspot/cpu/aarch64/gc/shared/barrierSetAssembler_aarch64.cpp	Wed Jun 13 10:01:53 2018 +0200
@@ -109,6 +109,11 @@
   }
 }
 
+void BarrierSetAssembler::obj_equals(MacroAssembler* masm,
+                                     Register obj1, Register obj2) {
+  __ cmp(obj1, obj2);
+}
+
 void BarrierSetAssembler::try_resolve_jobject_in_native(MacroAssembler* masm, Register jni_env,
                                                         Register obj, Register tmp, Label& slowpath) {
   // If mask changes we need to ensure that the inverse is still encodable as an immediate