2019-10-15  Richard Biener  <rguenther@suse.de>

	* lto-streamer-out.c (lto_variably_modified_type_p): New.
	(tree_is_indexable): Use it.
	* tree-streamer-out.c (pack_ts_type_common_value_fields):
	Stream variably_modified_type_p as TYPE_LANG_FLAG_0.
	* tree-streamer-in.c (unpack_ts_type_common_value_fields): Likewise.

From-SVN: r277005