2001-08-28  Daniel Berlin  <dan@cgsoftware.com>

	* df.h (struct df): Add rts_order variable.

	* df.c (df_visit_next_rts): New function.
	(df_visit_next): Renamed to df_visit_next_rc
	(df_analyse_1): Allocate/compute/free rts_order as well.
	(df_rd_global_compute): Use df_visit_next_rc instead of
	df_visit_next.
	(df_ru_global_compute): Use df_visit_next_rts instead of
	df_visit_next.

	* flow.c (flow_reverse_top_sort_order_compute): New function.

	* basic-block.h: Add prototype.

From-SVN: r45246