tree-ssa-structalias.c (create_variable_info_for): Remove strange whole-program condition, prepare to be called for non-globals.

2009-08-26  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-structalias.c (create_variable_info_for): Remove
	strange whole-program condition, prepare to be called for non-globals.
	(intra_create_variable_infos): For restrict qualified DECL_BY_REFERENCE
	params build a representative with known type and track its fields.

	* gcc.dg/tree-ssa/restrict-4.c: New testcase.

From-SVN: r151117