tree-flow.h (struct gimple_df): Make referenced_vars a uid_decl_map.

2007-10-18  Richard Guenther  <rguenther@suse.de>

	* tree-flow.h (struct gimple_df): Make referenced_vars
	a uid_decl_map.
	(uid_decl_map_eq): Declare.
	(uid_decl_map_hash): Likewise.
	* tree-ssa.c (uid_decl_map_eq): New function.
	(uid_decl_map_hash): Likewise.
	(init_tree_ssa): Make referenced_vars a uid_decl_map.
	* tree-flow-inline.h (first_referenced_var): Deal with
	the referenced_vars representation change.
	(next_referenced_var): Likewise.
	* tree-dfa.c (referenced_var_lookup): Likewise.
	(referenced_var_check_and_insert): Likewise.
	(remove_referenced_var): Likewise.

From-SVN: r129440