* ipa-prop.c (ipa_set_jf_known_type): Record always the main variant
	of the type.
	(ipa_set_ancestor_jf) Likewise.
	(check_stmt_for_type_change): Check that we work on main variant.
	(detect_type_change): Look into main variant.
	(compute_known_type_jump_func): Check that main variant has BINFO.

From-SVN: r212108