2010-05-04  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/43879
	* tree-ssa-structalias.c (alias_get_name): Use
	DECL_ASSEMBLER_NAME if available.
	(create_function_info_for): Return the varinfo node.
	(ipa_pta_execute): Associate same-body aliases and extra names
	with their origin nodes varinfo.  Dump DECL_ASSEMBLER_NAME.

	* g++.dg/torture/pr43879-1_0.C: New testcase.
	* g++.dg/torture/pr43879-1_1.C: Likewise.

From-SVN: r159026