--- a/src/hotspot/cpu/x86/x86_32.ad	Thu Oct 17 20:27:44 2019 +0100
+++ b/src/hotspot/cpu/x86/x86_32.ad	Thu Oct 17 20:53:35 2019 +0100
@@ -7315,6 +7315,14 @@
   ins_pipe( empty );
 %}
 
+instruct castLL( eRegL dst ) %{
+  match(Set dst (CastLL dst));
+  format %{ "#castLL of $dst" %}
+  ins_encode( /*empty encoding*/ );
+  ins_cost(0);
+  ins_pipe( empty );
+%}
+
 
 // Load-locked - same as a regular pointer load when used with compare-swap
 instruct loadPLocked(eRegP dst, memory mem) %{