--- old/src/hotspot/share/ci/ciSignature.hpp	2019-03-11 14:25:28.594355675 +0100
+++ new/src/hotspot/share/ci/ciSignature.hpp	2019-03-11 14:25:28.346355678 +0100
@@ -60,6 +60,8 @@
 
   ciType*   return_type() const;
   ciType*   type_at(int index) const;
+  bool      returns_never_null() const;
+  bool      is_never_null_at(int index) const;
 
   int       size() const                         { return _size; }
   int       count() const                        { return _count; }