* tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_DEVICE_TYPE.
	(enum omp_clause_device_type_kind): New enum.
	(struct tree_omp_clause): Add subcode.device_type_kind.
	* tree.h (OMP_CLAUSE_DEVICE_TYPE_KIND): Define.
	* tree.c (omp_clause_num_ops, omp_clause_code_name): Add entries
	for device_type clause.
	(walk_tree_1): Handle OMP_CLAUSE_DEVICE_TYPE.
	* tree-pretty-print.c (dump_omp_clause): Likewise.
c-family/
	* c-pragma.h (enum pragma_omp_clause): Add
	PRAGMA_OMP_CLAUSE_DEVICE_TYPE.
c/
	* c-parser.c (c_parser_omp_clause_name): Parse device_type.
	(c_parser_omp_clause_device_type): New function.
	(c_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_DEVICE_TYPE.
	(OMP_DECLARE_TARGET_CLAUSE_MASK): Add PRAGMA_OMP_CLAUSE_DEVICE_TYPE.
	(c_parser_omp_declare_target): Handle device_type clauses.  Remove
	diagnostics for declare target with clauses nested in clause-less
	declare target declaration-definition-seq.
	* c-typeck.c (c_finish_omp_clauses): Handle OMP_CLAUSE_DEVICE_TYPE.
cp/
	* parser.c (cp_parser_omp_clause_name): Parse device_type.
	(cp_parser_omp_clause_device_type): New function.
	(cp_parser_omp_all_clauses): Handle PRAGMA_OMP_CLAUSE_DEVICE_TYPE.
	(OMP_DECLARE_TARGET_CLAUSE_MASK): Add PRAGMA_OMP_CLAUSE_DEVICE_TYPE.
	(cp_parser_omp_declare_target): Handle device_type clauses.  Remove
	diagnostics for declare target with clauses nested in clause-less
	declare target declaration-definition-seq.
	* semantics.c (finish_omp_clauses): Handle OMP_CLAUSE_DEVICE_TYPE.
testsuite/
	* c-c++-common/gomp/declare-target-2.c: Don't expect error for
	declare target with clauses in between declare target without clauses
	and end declare target.
	* c-c++-common/gomp/declare-target-4.c: New test.

From-SVN: r274252