8307531: [aarch64] JDK8 single-step debugging is extremely slow

Reviewed-by: aph

Author: Sergey Nazarkin

hotspot/src/share/vm/prims/jvmtiExport.cpp

@@ -1239,14 +1239,7 @@ void JvmtiExport::post_method_exit(JavaThread *thread, Method* method, frame cur
     }
   }
 
-#ifdef AARCH64
-  // FIXME: this is just a kludge to get JVMTI going.  Compiled
-  // MethodHandle code doesn't call the JVMTI notify routines, so the
-  // stack depth we see here is wrong.
-  state->invalidate_cur_stack_depth();
-#else
   state->decr_cur_stack_depth();
-#endif
 }
 
 

hotspot/src/share/vm/prims/jvmtiThreadState.cpp

@@ -63,6 +63,7 @@ JvmtiThreadState::JvmtiThreadState(JavaThread* thread)
   _vm_object_alloc_event_collector = NULL;
   _the_class_for_redefinition_verification = NULL;
   _scratch_class_for_redefinition_verification = NULL;
+  _cur_stack_depth = UNKNOWN_STACK_DEPTH;
 
   // JVMTI ForceEarlyReturn support
   _pending_step_for_earlyret = false;