1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/expr.h b/gcc/expr.h
index 6f99680..1f0177a 100644
--- a/gcc/expr.h
+++ b/gcc/expr.h
@@ -298,6 +298,7 @@ extern tree string_constant (tree, tree *, tree *, tree *);
 extern tree byte_representation (tree, tree *, tree *, tree *);
 
 extern enum tree_code maybe_optimize_mod_cmp (enum tree_code, tree *, tree *);
+extern void maybe_optimize_sub_cmp_0 (enum tree_code, tree *, tree *);
 
 /* Two different ways of generating switch statements.  */
 extern int try_casesi (tree, tree, tree, tree, rtx, rtx, rtx, profile_probability);