mirror of git://gcc.gnu.org/git/gcc.git
59 lines
1.4 KiB
Fortran
59 lines
1.4 KiB
Fortran
! { dg-do run }
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! { dg-require-effective-target offload_device_nonshared_as }
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subroutine init (v1, v2, N)
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!$omp declare target
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integer :: i, N
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real :: v1(N), v2(N)
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do i = 1, N
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v1(i) = i + 2.0
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v2(i) = i - 3.0
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end do
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end subroutine
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subroutine check (p, N)
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integer :: i, N
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real, parameter :: EPS = 0.00001
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real :: diff, p(N)
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do i = 1, N
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diff = p(i) - (i + 2.0) * (i - 3.0)
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if (diff > EPS .or. -diff > EPS) call abort
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end do
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end subroutine
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subroutine vec_mult (p, N)
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use omp_lib, only: omp_is_initial_device
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real :: p(N)
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real, allocatable :: v1(:), v2(:)
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integer :: i
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!$omp declare target (init)
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!$omp target data map(to: v1, v2, N) map(from: p)
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!$omp task shared(v1, v2, p) depend(out: v1, v2)
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!$omp target map(to: v1, v2, N)
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if (omp_is_initial_device ()) call abort
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allocate (v1(N), v2(N))
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call init (v1, v2, N)
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!$omp end target
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!$omp end task
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!$omp task shared(v1, v2, p) depend(in: v1, v2)
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!$omp target map(to: v1, v2, N) map(from: p)
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if (omp_is_initial_device ()) call abort
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!$omp parallel do
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do i = 1, N
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p(i) = v1(i) * v2(i)
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end do
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deallocate (v1, v2)
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!$omp end target
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!$omp end task
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!$omp end target data
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!$omp taskwait
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call check (p, N)
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end subroutine
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program e_55_2
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integer, parameter :: N = 1000
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real :: p(N)
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call vec_mult (p, N)
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end program
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