? (GET_CODE (PATTERN (I)) == SET \
? PATTERN (I) : single_set_1 (I)) \
: NULL_RTX)
+#define single_set_1(I) single_set_2 (I, PATTERN (I))
extern int rtx_unstable_p PARAMS ((rtx));
extern int rtx_varies_p PARAMS ((rtx));
extern int modified_in_p PARAMS ((rtx, rtx));
extern int insn_dependent_p PARAMS ((rtx, rtx));
extern int reg_set_p PARAMS ((rtx, rtx));
-extern rtx single_set_1 PARAMS ((rtx));
+extern rtx single_set_2 PARAMS ((rtx, rtx));
extern int multiple_sets PARAMS ((rtx));
extern rtx find_last_value PARAMS ((rtx, rtx *, rtx, int));
extern int refers_to_regno_p PARAMS ((unsigned int, unsigned int,