-extern rtx expand_mult (machine_mode, rtx, rtx, rtx, int);
-extern rtx expand_mult_highpart_adjust (machine_mode, rtx, rtx, rtx, rtx, int);
+extern rtx expand_mult (machine_mode, rtx, rtx, rtx, int, bool = false);
+extern rtx expand_mult_highpart_adjust (scalar_int_mode, rtx, rtx, rtx,
+ rtx, int);