! { dg-do run }

  integer, parameter :: N = 256
  integer, save :: a(N), b(N / 16, 8, 4), c(N / 32, 8, 8)
  integer, save, volatile :: d, e
  integer :: i, j, k, l, m
  integer :: m1, m2, m3, m4, m5, m6, m7, m8
  integer :: m9, m10, m11, m12, m13, m14, m15, m16
  d = 0
  e = 0
  !$omp parallel private (l) shared(k)
    !$omp do schedule(static, 1) ordered(1)
    do i = 1, N
      !$omp atomic write
      a(i) = 1
      !$omp ordered depend ( sink : i - 1 )
      if (i.gt.1) then
        !$omp atomic read
        l = a(i - 1)
        if (l.lt.2) call abort
      end if
      !$omp atomic write
      a(i) = 2
      if (i.lt.N) then
        !$omp atomic read
        l = a(i + 1)
        if (l.eq.3) call abort
      end if
      !$omp ordered depend(source)
      !$omp atomic write
      a(i) = 3
    end do
    !$omp end do nowait
    !$omp do schedule(static) ordered ( 3 )
    do i = 3, N / 16 - 1
      do j = 1, 8, 2
        do k = 2, 4
          !$omp atomic write
          b(i, j, k) = 1
          !$omp ordered depend(sink:i,j-2,k-1) &
          !$omp& depend(sink: i - 2, j - 2, k + 1)
          !$omp ordered depend(sink:i-3,j+2,k-2)
          if (j.gt.2.and.k.gt.2) then
            !$omp atomic read
            l = b(i,j-2,k-1)
            if (l.lt.2) call abort
          end if
          !$omp atomic write
          b(i,j,k) = 2
          if (i.gt.4.and.j.gt.2.and.k.lt.4) then
            !$omp atomic read
            l = b(i-2,j-2, k+1)
            if (l.lt.2) call abort
          end if
          if (i.gt.5.and.j.le.N/16-3.and.k.eq.4) then
            !$omp atomic read
            l = b( i - 3, j+2, k-2)
            if (l.lt.2) call abort
          end if
          !$omp ordered depend(source)
          !$omp atomic write
          b(i, j, k) = 3
        end do
      end do
    end do
    !$omp end do nowait
    !$omp do schedule(dynamic, 15) collapse(2) ordered(13)
    do i = 1, N / 32
      do j = 8, 3, -1
        do k = 7, 1, -2
          do m1 = 4, 4
          do m2 = 4, 4
          do m3 = 4, 4
          do m4 = 4, 4
          do m5 = 4, 4
          do m6 = 4, 4
          do m7 = 4, 4
          do m8 = 4, 4
          do m9 = 4, 4
          do m10 = 4, 4
          do m11 = 4, 4
          do m12 = 4, 4
          do m13 = 4, 4
          do m14 = 4, 4
          do m15 = 4, 4
          do m16 = 4, 4
            !$omp atomic write
            c(i, j, k) = 1
            !$omp ordered depend(sink: i, j, k + 2, m1, m2, m3, m4, &
            !$omp & m5, m6, m7, m8, m9, m10) &
            !$omp depend(sink: i - 2, j + 1, k - 4, m1,m2,m3,m4,m5, &
            !$omp & m6,m7,m8,m9,m10) depend ( sink : i-1,j-2,k-2, &
            !$omp& m1,m2,m3,m4 , m5, m6,m7,m8,m9,m10 )
            if (k.le.5) then
              !$omp atomic read
              l = c(i, j, k + 2)
              if (l.lt.2) call abort
            end if
            !$omp atomic write
            c(i, j, k) = 2
            if (i.ge.3.and.j.lt.8.and.k.ge.5) then
              !$omp atomic read
              l = c(i - 2, j + 1, k - 4)
              if (l.lt.2) call abort
            end if
            if (i.ge.2.and.j.ge.5.and.k.ge.3) then
              !$omp atomic read
              l = c(i - 1, j - 2, k - 2)
              if (l.lt.2) call abort
            end if
            !$omp ordered depend ( source )
            !$omp atomic write
            c(i,j,k)=3
          end do
          end do
          end do
          end do
          end do
          end do
          end do
          end do
          end do
          end do
          end do
          end do
          end do
          end do
          end do
          end do
        end do
      end do
    end do
    !$omp do collapse(2) ordered(4) lastprivate (i,j,k)
    do i = 0, d
      do j = d + 1, 0, -1
        do k = 0, d - 1
          do l = 0, d + 1
            !$omp ordered depend(source)
            !$omp ordered depend(sink: i-2,j+2,k-2,l)
            if (e.eq.0) call abort
          end do
        end do
      end do
    end do
    !$omp single
    if (i.ne.1.or.j.ne.-1.or.k.ne.0) call abort
    i = 8; j = 9; k = 10
    !$omp end single
    !$omp do ordered(4) collapse(2) lastprivate (i, j, k, m)
    do i = 0, d
      do j = d + 1, 0, -1
        do k = 0, d + 1
          do m = 0, d-1
            !$omp ordered depend(source)
            !$omp ordered depend(sink: i - 2, j + 2, k - 2, m)
            call abort
          end do
        end do
      end do
    end do
    !$omp single
    if (i.ne.1.or.j.ne.-1.or.k.ne.2.or.m.ne.0) call abort
    !$omp end single
    !$omp do collapse(2) ordered(4) lastprivate (i,j,k)
    do i = 0, d
      do j = d, 1, -1
        do k = 0, d + 1
          do l = 0, d + 3
            !$omp ordered depend(source)
            !$omp ordered depend(sink: i-2,j+2,k-2,l)
            if (e.eq.0) call abort
          end do
        end do
      end do
    end do
    !$omp end do nowait
    !$omp do
    do i = 1, N
      if (a(i) .ne. 3) call abort
    end do
    !$omp end do nowait
    !$omp do collapse(2) private(k)
    do i = 1, N / 16
      do j = 1, 8
        do k = 1, 4
          if (i.ge.3.and.i.lt.N/16.and.iand(j,1).ne.0.and.k.ge.2) then
            if (b(i,j,k).ne.3) call abort
          else
            if (b(i,j,k).ne.0) call abort
          end if
        end do
      end do
    end do
    !$omp end do nowait
    !$omp do collapse(3)
    do i = 1, N / 32
      do j = 1, 8
        do k = 1, 4
          if (j.ge.3.and.iand(k,1).ne.0) then
            if (c(i,j,k).ne.3) call abort
          else
            if (c(i,j,k).ne.0) call abort
          end if
        end do
      end do
    end do
    !$omp end do nowait
  !$omp end parallel
end