PR middle-end/65337
	* tree-ssa-dce.c (bb_postorder): New static var.
	(forward_edge_to_pdom): Remove.
	(remove_dead_stmt): Instead of redirecting edges only keep an edge
	on a path to nearest live BB.
	(eliminate_unnecessary_stmts): Free bb_postorder.
	* cfganal.c (dfs_find_deadend): Add START_POINTES.
	* cfganal.h (inverted_post_order_compute): Update prototype.

From-SVN: r231856