PR lto/59326
	* tree-core.h (enum omp_clause_schedule_kind): Add
	OMP_CLAUSE_SCHEDULE_LAST.
	(enum omp_clause_default_kind): Add OMP_CLAUSE_DEFAULT_LAST.
	(enum omp_clause_depend_kind): Add OMP_CLAUSE_DEPEND_LAST.
	(enum omp_clause_map_kind): Add OMP_CLAUSE_MAP_LAST.
	(enum omp_clause_proc_bind_kind): Add OMP_CLAUSE_PROC_BIND_LAST.
	* lto-streamer-out.c (lto_is_streamable): Allow streaming
	OMP_CLAUSE.
	(DFS_write_tree_body): Handle OMP_CLAUSE.
	* tree-streamer-out.c (pack_ts_omp_clause_value_fields): New
	function.
	(streamer_pack_tree_bitfields): Call it for OMP_CLAUSE.
	(write_ts_omp_clause_tree_pointers): New function.
	(streamer_write_tree_body): Call it for OMP_CLAUSE.
	(streamer_write_tree_header): For OMP_CLAUSE stream OMP_CLAUSE_CODE.
	* tree-streamer-in.c (unpack_ts_omp_clause_value_fields): New
	function.
	(unpack_value_fields): Call it for OMP_CLAUSE.
	(streamer_alloc_tree): Handle OMP_CLAUSE.
	(lto_input_ts_omp_clause_tree_pointers): New function.
	(streamer_read_tree_body): Call it for OMP_CLAUSE.
lto/
	* lto.c (mentions_vars_p_omp_clause): New function.
	(mentions_vars_p): Call it for OMP_CLAUSE.  Remove break;
	after return stmts.

From-SVN: r205512