2012-06-11  Richard Guenther  <rguenther@suse.de>

	* alias.c (aliases_everything_p): Remove.
	(DIFFERENT_ALIAS_SETS_P): Likewise.
	(true_dependence_1): Use mems_in_disjoint_alias_sets_p directly.
	Do not use aliases_everything_p or special-case ANDs.  Do not
	special-case BLKmode moves.
	(may_alias_p): Likewise.  Handle BLKmode similar like everywhere
	- for SCATCH only.

From-SVN: r188384