2006-04-08 Daniel Berlin <dberlin@dberlin.org>

	* tree.h (tree_memory_tag): Add old_used_alone.
	(SMT_OLD_USED_ALONE): New macro.
	* tree-ssa-alias.c (recalculate_used_alone): Stop
	marking things for renaming unnecessarily.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@112789 138bc75d-0d04-0410-961f-82ee72b054a4