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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/95654] nvptx offloading: FAIL:
 libgomp.fortran/pr66199-5.f90   -O3 -fomit-frame-pointer -funroll-loops
 -fpeel-loops -ftracer -finline-functions  execution test
Date: Thu, 17 Sep 2020 13:53:35 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95654

--- Comment #12 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #7)
> Minimal example after commit 91347c3bbf7 "Fortran: OpenMP - fix simd with
> (last)private (PR97061)":
> ...
> ! { dg-do run }=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
>=20
> program main
>   implicit none
>   integer :: d1
>   !$omp target map(from: d1)=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20
>=20
>   !$omp teams distribute parallel do simd default(none) lastprivate(d1)=
=20=20=20=20=20
>=20
>   do d1 =3D 0, 31
>   end do
>   !$omp end target=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
>=20
>   if (d1 /=3D 32) stop 3
> end program
> ...

To further reduce: set num_teams to 2, and num_threads to 1:
...
  !$omp teams distribute parallel do simd default(none) lastprivate(d1)
num_teams (2) num_threads (1)
...
Makes it easier to reason about the code.=