2010-07-05  Richard Guenther  <rguenther@suse.de>

	* tree.c (reference_alias_ptr_type): New function.
	* tree.h (reference_alias_ptr_type): Declare.
	* tree-ssa-loop-ivopts.c (copy_ref_info): Restructure to
	allow non-TARGET_MEM_REF new refs.
	(rewrite_use_address): Pass old alias pointer type to
	create_mem_ref.
	* tree-ssa-address.c (create_mem_ref_raw): Get alias pointer type.
	Build a MEM_REF instead of a TARGET_MEM_REF if possible.
	(create_mem_ref): Get alias pointer type.  Adjust calls to
	create_mem_ref_raw.
	(maybe_fold_tmr): Likewise.
	* tree-flow.h (create_mem_ref): Adjust prototype.

From-SVN: r161840