While C/++ support the routines acc_attach{,_async} and
acc_detach{,_finalize}{,_async} routines since a long time, the Fortran
API routines where only added in OpenACC 3.3.
Unfortunately, they cannot directly be implemented in the library as
GCC will introduce a temporary array descriptor in some cases, which
causes the attempted attachment to the this temporary variable instead
of to the original one.
Therefore, those API routines are handled in a special way in the compiler.
gcc/fortran/ChangeLog:
* trans-stmt.cc (gfc_trans_call_acc_attach_detach): New.
(gfc_trans_call): Call it.
libgomp/ChangeLog:
* libgomp.texi (acc_attach, acc_detach): Update for Fortran
version.
* openacc.f90 (acc_attach{,_async}, acc_detach{,_finalize}{,_async}):
Add.
* openacc_lib.h: Likewise.
* testsuite/libgomp.oacc-fortran/acc-attach-detach-1.f90: New test.
* testsuite/libgomp.oacc-fortran/acc-attach-detach-2.f90: New test.
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