--- a/src/hotspot/cpu/aarch64/vm_version_aarch64.hpp	Tue Aug 20 10:46:23 2019 +0200
+++ b/src/hotspot/cpu/aarch64/vm_version_aarch64.hpp	Tue Aug 20 10:11:53 2019 +0100
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2014, Red Hat Inc. All rights reserved.
+ * Copyright (c) 2014, 2019, Red Hat Inc. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -40,7 +40,7 @@
   static int _variant;
   static int _revision;
   static int _stepping;
-
+  static bool _dcpop;
   struct PsrInfo {
     uint32_t dczid_el0;
     uint32_t ctr_el0;
@@ -106,6 +106,7 @@
   static int cpu_model2()                     { return _model2; }
   static int cpu_variant()                    { return _variant; }
   static int cpu_revision()                   { return _revision; }
+  static bool supports_dcpop()                { return _dcpop; }
   static ByteSize dczid_el0_offset() { return byte_offset_of(PsrInfo, dczid_el0); }
   static ByteSize ctr_el0_offset()   { return byte_offset_of(PsrInfo, ctr_el0); }
   static bool is_zva_enabled() {