* tree.h (TYPE_ARTIFICIAL): New flag.
	* dwarf2out.c (modified_type_die): Add a DW_AT_artificial attribute to
	the DIE of the type if it is artificial.
	(gen_array_type_die): Likewise.
	(gen_enumeration_type_die): Likewise.
	(gen_struct_or_union_type_die): Likewise.
	* lto-streamer-in.c (unpack_ts_base_value_fields): Use TYPE_ARTIFICIAL.
	* lto-streamer-out.c (pack_ts_base_value_fields): Likewise.
ada/
	* gcc-interface/utils.c (record_builtin_type): Set TYPE_ARTIFICIAL on
	the type according to the ARTIFICIAL_P parameter.
	(create_type_decl): Likewise.
	(create_type_stub_decl): Set TYPE_ARTIFICIAL on the type to 1.

Co-Authored-By: Nicolas Setton <setton@adacore.com>
Co-Authored-By: Olivier Hainque <hainque@adacore.com>

From-SVN: r175781