--- a/src/hotspot/cpu/x86/rdtsc_x86.cpp	Wed Nov 27 10:21:22 2019 +0100
+++ b/src/hotspot/cpu/x86/rdtsc_x86.cpp	Tue Nov 26 10:47:46 2019 +0100
@@ -24,6 +24,7 @@
 
 #include "precompiled.hpp"
 #include "rdtsc_x86.hpp"
+#include "runtime/orderAccess.hpp"
 #include "runtime/thread.inline.hpp"
 #include "vm_version_ext_x86.hpp"