omp-low.c (lower_rec_input_clauses): Handle VLAs properly.

omp-low.c (lower_rec_input_clauses): Handle VLAs properly.

	* omp-low.c (lower_rec_input_clauses): Handle VLAs properly.
	(lower_omp_task_reductions): Likewise.
	* gimplify.c (enum omp_region_type): Add ORT_TASKGROUP.
	(gimple_add_tmp_var, omp_firstprivatize_variable, omp_notice_variable,
	omp_is_private, omp_check_private, gimplify_omp_depend): Handle
	ORT_TASKGROUP like ORT_WORKSHARE.
	(omp_add_variable): Don't add private/firstprivate for VLAs in
	ORT_TASKGROUP.
	(gimplify_expr) <case OMP_TASKGROUP>: Move handling into a separate
	case, make sure to scan omp clauses before gimplifying body.

	* testsuite/libgomp.c-c++-common/task-reduction-5.c (size_t): New
	typedef.
	(bar): Use it instead of __SIZE_TYPE__ directly.
	(foo): Likewise.  Use (~(size_t) 0) instead of __SIZE_MAX__.
	* testsuite/libgomp.c/task-reduction-1.c: New test.
	* testsuite/libgomp.c++/task-reduction-7.C: New test.

From-SVN: r265013