gcc/c/
	* c-parser.c (c_parser_oacc_shape_clause): New.
	(c_parser_oacc_simple_clause): New.
	(c_parser_oacc_all_clauses): Add auto, gang, seq, vector, worker.
	(OACC_LOOP_CLAUSE_MASK): Add gang, worker, vector, auto, seq.

	gcc/testsuite/
	* c-c++-common/goacc/loop-shape.c: New test.

Co-Authored-By: Bernd Schmidt <bernds@redhat.com>
Co-Authored-By: James Norris <jnorris@codesourcery.com>
Co-Authored-By: Joseph Myers <joseph@codesourcery.com>
Co-Authored-By: Julian Brown <julian@codesourcery.com>
Co-Authored-By: Thomas Schwinge <thomas@codesourcery.com>

From-SVN: r229461