$OpenBSD$

index eef50fc..9690c7a 100644
--- js/src/jit/LIR.h.orig	Fri Feb 20 15:40:37 2015
+++ js/src/jit/LIR.h	Fri Feb 20 15:40:37 2015
@@ -1419,6 +1419,10 @@ class LIRGraph
         static bool match(const Value &lhs, const Value &rhs) {
             return lhs == rhs;
         }
+
+#ifdef DEBUG
+        bool canOptimizeOutIfUnused();
+#endif
     };