c-typeck.c (c_finish_omp_clauses): Mark OpenACC reduction arguments as addressable...

c-typeck.c (c_finish_omp_clauses): Mark OpenACC reduction arguments as addressable when async clause exists.

2016-06-03  Chung-Lin Tang  <cltang@codesourcery.com>

	c/
	* c-typeck.c (c_finish_omp_clauses): Mark OpenACC reduction
	arguments as addressable when async clause exists.

	cp/
	* semantics.c (finish_omp_clauses): Mark OpenACC reduction
	arguments as addressable when async clause exists.

	fortran/
	* trans-openmp.c (gfc_trans_omp_reduction_list): Add mark_addressable
	bool parameter, set reduction clause DECLs as addressable when true.
	(gfc_trans_omp_clauses): Pass clauses->async to
	gfc_trans_omp_reduction_list, add comment describing OpenACC situation.

	libgomp/
	* testsuite/libgomp.oacc-fortran/reduction-8.f90: New testcase.
	* testsuite/libgomp.oacc-c-c++-common/reduction-8.c: New testcase.

From-SVN: r237070