2009-12-15  Richard Guenther  <rguenther@suse.de>

	* tree.c (free_lang_data_in_binfo): Do not free BINFO_OFFSET
	and BINFO_VPTR_FIELD.
	(free_lang_data_in_type): Do not free TYPE_STUB_DECL if we
	generate debug information.
	(free_lang_data_in_decl): Do not free DECL_SIZE_UNIT,
	DECL_SIZE, DECL_FIELD_OFFSET and DECL_FCONTEXT.
	(free_lang_data): Do not disable debuginfo.
	* lto-streamer-out.c (write_symbol_vec): Deal with
	non-constant DECL_SIZE.
	(pack_ts_base_value_fields): Write types with false
	TREE_ASM_WRITTEN.
	(lto_output_ts_type_tree_pointers): Stream TYPE_STUB_DECL.
	* lto-streamer-in.c (lto_input_ts_type_tree_pointers): Stream
	TYPE_STUB_DECL.
	* dwarf2out.c (add_pure_or_virtual_attribute): Check for
	DECL_CONTEXT.
	(gen_type_die_for_member): Test for TYPE_STUB_DECL.
	* opts.c (decode_options): Do not disable var-tracking for lto.
	* doc/invoke.texi (-flto): Document -flto vs. -g experimental
	status.
	(-fwhopr): Document experimental status.

	lto/
	* lto.c (lto_fixup_field_decl): Fixup DECL_FIELD_OFFSET.
	(lto_post_options): Do not disable debuginfo.

From-SVN: r155259