--- a/src/hotspot/cpu/s390/s390.ad	Thu Sep 05 12:39:48 2019 +0200
+++ b/src/hotspot/cpu/s390/s390.ad	Thu Sep 05 13:56:17 2019 +0200
@@ -5409,6 +5409,14 @@
   ins_pipe(pipe_class_dummy);
 %}
 
+instruct castLL(iRegL dst) %{
+  match(Set dst (CastLL dst));
+  size(0);
+  format %{ "# castLL of $dst" %}
+  ins_encode(/*empty*/);
+  ins_pipe(pipe_class_dummy);
+%}
+
 
 //----------Conditional_store--------------------------------------------------
 // Conditional-store of the updated heap-top.