tree-ssa-structalias.c (struct variable_info): Remove has_union.

tree-ssa-structalias.c (struct variable_info): Remove has_union.

2008-07-06  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-structalias.c (struct variable_info): Remove has_union.
	(new_var_info): Deal with it.
	(solution_set_add): Likewise.
	(bitpos_of_field): Make signed, fix.
	(struct fieldoff): Remove type and decl fields.  Make size field
	unsigned HOST_WIDE_INT.  Add has_unknown_size and may_have_pointers
	flags.
	(fieldoff_compare): Deal with it.
	(push_fields_onto_fieldstack): Remove has_union argument, glob
	adjacent non-pointer fields together.
	(create_function_info_for): Do not set has_union.
	(create_variable_info_for): Simplify.

	* gcc.dg/tree-ssa/pta-callused.c: Adjust testcase.

From-SVN: r137530