Various OpenACC reduction enhancements - test cases

Various OpenACC reduction enhancements - test cases

2018-12-13  Cesar Philippidis  <cesar@codesourcery.com>
            Nathan Sidwell  <nathan@acm.org>
            Julian Brown  <julian@codesourcery.com>

        gcc/testsuite/
        * c-c++-common/goacc/orphan-reductions-1.c: New test.
        * c-c++-common/goacc/reduction-7.c: New test.
        * c-c++-common/goacc/routine-4.c: Update.
        * g++.dg/goacc/reductions-1.C: New test.
        * gcc.dg/goacc/loop-processing-1.c: Update.
        * gfortran.dg/goacc/orphan-reductions-1.f90: New test.

        libgomp/
        * testsuite/libgomp.oacc-c-c++-common/par-reduction-3.c: New test.
        * testsuite/libgomp.oacc-c-c++-common/reduction-cplx-flt-2.c: New test.
        * testsuite/libgomp.oacc-fortran/reduction-9.f90: New test.