extern tree default_chkp_bound_type (void);
extern enum machine_mode default_chkp_bound_mode (void);
extern tree default_builtin_chkp_function (unsigned int);
-extern bool can_use_doloop_if_innermost (double_int, double_int,
+extern bool can_use_doloop_if_innermost (const widest_int &,
+ const widest_int &,
unsigned int, bool);