[committed, libgomp, openacc, testsuite] Fix async/wait logic in lib-13.f90

[committed, libgomp, openacc, testsuite] Fix async/wait logic in lib-13.f90

[Tom de Vries]

Hi,

the purpose of the lib-13.f90 test-case is to test acc_wait_all_async.  The
test indeed calls acc_wait_all_async, but then subsequentlys calls
acc_wait_all, so the acc_wait_all_async functionality is not tested.
Furthermore, all acc_async_test calls are placed in a location where they are
not guaranteed to succeed, which explains why there's an xfail for the lower
optimization levels.

This patch fixes the problems by replacing acc_wait_all with an acc_wait on
the async id used for the acc_wait_all_async call, and moving the
acc_async_test calls to the correct locations.

Reg-tested on x86_64 with nvptx accelerator.

Committed to trunk.

Thanks,
- Tom

[libgomp, openacc, testsuite] Fix async/wait logic in lib-13.f90

2018-07-26  Tom de Vries  <tdevries@suse.de>

	* testsuite/libgomp.oacc-fortran/lib-13.f90: Replace acc_wait_all with
	acc_wait.  Move acc_async_test calls to correct locations.  Remove
	xfail.

---
 libgomp/testsuite/libgomp.oacc-fortran/lib-13.f90 | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/libgomp/testsuite/libgomp.oacc-fortran/lib-13.f90 b/libgomp/testsuite/libgomp.oacc-fortran/lib-13.f90
index 6d713b1cd95..da944c35de9 100644
--- a/libgomp/testsuite/libgomp.oacc-fortran/lib-13.f90
+++ b/libgomp/testsuite/libgomp.oacc-fortran/lib-13.f90
@@ -1,5 +1,4 @@
 ! { dg-do run }
-! { dg-xfail-run-if "TODO" { openacc_nvidia_accel_selected } { "-O0" "-O1" } { "" } }
 
 program main
   use openacc
@@ -22,13 +21,12 @@ program main
     end do
   !$acc end data
 
-  if (acc_async_test (1) .neqv. .TRUE.) call abort
-  if (acc_async_test (2) .neqv. .TRUE.) call abort
-
   call acc_wait_all_async (nprocs + 1)
 
-  if (acc_async_test (nprocs + 1) .neqv. .TRUE.) call abort
+  call acc_wait (nprocs + 1)
 
-  call acc_wait_all ()
+  if (acc_async_test (1) .neqv. .TRUE.) call abort
+  if (acc_async_test (2) .neqv. .TRUE.) call abort
+  if (acc_async_test (nprocs + 1) .neqv. .TRUE.) call abort
 
 end program