tree.h (OMP_CLAUSE_REDUCTION_TASK, [...]): Define.

tree.h (OMP_CLAUSE_REDUCTION_TASK, [...]): Define.

	* tree.h (OMP_CLAUSE_REDUCTION_TASK, OMP_CLAUSE_REDUCTION_INSCAN):
	Define.
	* tree-pretty-print.c (dump_omp_clause): Print reduction modifiers.
	* gimplify.c (gimplify_scan_omp_clauses): Handle
	OMP_CLAUSE_REDUCTION_TASK diagnostics.
gcc/c-family/
	* c-omp.c (c_omp_split_clauses): Handle OMP_CLAUSE_REDUCTION_TASK.
gcc/c/
	* c-parser.c (c_parser_omp_clause_reduction): Add IS_OMP argument,
	parse reduction modifiers.
	(c_parser_oacc_all_clauses, c_parser_omp_all_clauses): Adjust
	c_parser_omp_clause_reduction callers.
gcc/cp/
	* parser.c (cp_parser_omp_clause_reduction): Add IS_OMP argument,
	parse reduction modifiers.
	(cp_parser_oacc_all_clauses, cp_parser_omp_all_clauses): Adjust
	cp_parser_omp_clause_reduction callers.
gcc/testsuite/
	* c-c++-common/gomp/reduction-task-1.c: New test.
	* c-c++-common/gomp/reduction-task-2.c: New test.

From-SVN: r263211