cgraph.h (struct cgraph_edge): Add prev_caller and prev_callee fields.

cgraph.h (struct cgraph_edge): Add prev_caller and prev_callee fields.

2005-03-02  Richard Guenther  <rguenth@gcc.gnu.org>

	* cgraph.h (struct cgraph_edge): Add prev_caller and
	prev_callee fields.
	(cgraph_node_remove_callees): Export.
	* cgraph.c (cgraph_create_edge): Initialize prev_caller
	and prev_callee.
	(cgraph_edge_remove_callee): New function.
	(cgraph_edge_remove_caller): Likewise.
	(cgraph_remove_edge): Use.
	(cgraph_redirect_edge_callee): Likewise.
	(cgraph_node_remove_callees): New function.
	(cgraph_node_remove_callers): Likewise.
	(cgraph_remove_node): Use.
	* tree-optimize.c (tree_rest_of_compilation): Use
	cgraph_node_remove_callees instead of manual loop.
	* cgraphunit.c (cgraph_finalize_function): Likewise.
	(cgraph_expand_function): Likewise.
	(cgraph_remove_unreachable_nodes): Likewise.

From-SVN: r95777