diff --git a/gcc/tree.h b/gcc/tree.h
index ad801f8b3402..343c037dce99 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -510,6 +510,8 @@ struct tree_common
 struct tree_int_cst
 {
   char common[sizeof (struct tree_common)];
+  struct rtx_def *rtl;	/* acts as link to register transfer language
+			   (rtl) info */
   HOST_WIDE_INT int_cst_low;
   HOST_WIDE_INT int_cst_high;
 };