2010-05-26  Richard Guenther  <rguenther@suse.de>

	PR rtl-optimization/44164
	* tree-ssa-alias.c (aliasing_component_refs_p): Fix the
	no-common access-path disambiguation.
	(indirect_ref_may_alias_decl_p): Adjust.
	(indirect_refs_may_alias_p): Likewise.
	(refs_may_alias_p_1): Likewise.

	* gcc.c-torture/execute/pr44164.c: New testcase.
	* g++.dg/tree-ssa/pr13146.C: Adjust.

From-SVN: r159861