2011-12-15  Richard Guenther  <rguenther@suse.de>

	PR lto/51564
	* tree.h (REGISTER_DEFS_IN_THIS_STMT, NECESSARY,
	STMT_IN_SSA_EDGE_WORKLIST): Remove no longer existing flag
	uses documentation.
	(TREE_ASM_WRITTEN): Update documentation to mention its use
	on TYPE_DECLs from debug info generation.
	* tree-streamer-out.c (pack_ts_base_value_fields): Stream
	TREE_ASM_WRITTEN as always zero for TYPE_DECLs, similar to
	all other types.

	* g++.dg/lto/pr51564-1_0.C: New testcase.

From-SVN: r182367