1! { dg-do run }
2! { dg-require-effective-target offload_device }
3
4subroutine init (v1, v2, N)
5  !$omp declare target
6  integer :: i, N
7  real :: v1(N), v2(N)
8  do i = 1, N
9    v1(i) = i + 2.0
10    v2(i) = i - 3.0
11  end do
12end subroutine
13
14subroutine check (p, N)
15  integer :: i, N
16  real, parameter :: EPS = 0.00001
17  real :: diff, p(N)
18  do i = 1, N
19    diff = p(i) - (i + 2.0) * (i - 3.0)
20    if (diff > EPS .or. -diff > EPS) call abort
21  end do
22end subroutine
23
24subroutine vec_mult (p, N)
25  use omp_lib, only: omp_is_initial_device
26  real :: p(N)
27  real, allocatable :: v1(:), v2(:)
28  integer :: i
29  !$omp declare target (init)
30  !$omp target data map(to: v1, v2, N) map(from: p)
31    !$omp task shared(v1, v2, p) depend(out: v1, v2)
32      !$omp target map(to: v1, v2, N)
33        if (omp_is_initial_device ()) call abort
34        allocate (v1(N), v2(N))
35        call init (v1, v2, N)
36      !$omp end target
37    !$omp end task
38    !$omp task shared(v1, v2, p) depend(in: v1, v2)
39      !$omp target map(to: v1, v2, N) map(from: p)
40        if (omp_is_initial_device ()) call abort
41        !$omp parallel do
42        do i = 1, N
43          p(i) = v1(i) * v2(i)
44        end do
45        deallocate (v1, v2)
46      !$omp end target
47    !$omp end task
48  !$omp end target data
49  call check (p, N)
50end subroutine
51
52program e_55_2
53  integer, parameter :: N = 1000
54  real :: p(N)
55  call vec_mult (p, N)
56end program
57