2009-06-30 Richard Guenther <rguenther@suse.de>

2009-06-30  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-alias.c (walk_aliased_vdefs_1): Change interface to
	use ao_ref references.
	(walk_aliased_vdefs): Likewise.
	* tree-ssa-alias.h (walk_aliased_vdefs): Adjust prototype.
	* tree-ssa-dce.c (struct ref_data): Remove.
	(mark_aliased_reaching_defs_necessary_1): Use the ao_ref argument.
	(mark_aliased_reaching_defs_necessary): Adjust.
	(mark_all_reaching_defs_necessary_1): Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@149086 138bc75d-0d04-0410-961f-82ee72b054a4