+ /* If no set-flag instruction, must generate a conditional store
+ into a temporary variable. Drop through and handle this
+ like && and ||. */
+
+ if (! ignore
+ && (target == 0
+ || modifier == EXPAND_STACK_PARM
+ || ! safe_from_p (target, exp, 1)
+ /* Make sure we don't have a hard reg (such as function's return
+ value) live across basic blocks, if not optimizing. */
+ || (!optimize && REG_P (target)
+ && REGNO (target) < FIRST_PSEUDO_REGISTER)))
+ target = gen_reg_rtx (tmode != VOIDmode ? tmode : mode);
+
+ if (target)
+ emit_move_insn (target, const0_rtx);
+
+ op1 = gen_label_rtx ();
+ jumpifnot (exp, op1);
+
+ if (target)
+ emit_move_insn (target, const1_rtx);
+
+ emit_label (op1);
+ return ignore ? const0_rtx : target;
+