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Exercise nested function decomposition, gcc/tree-nested.c. ! { dg-do run } program sub_collapse_3 call test1 call test2 (2, 6, -2, 4, 13, 18) call test3 (2, 6, -2, 4, 13, 18, 1, 1, 1) call test4 call test5 (2, 6, -2, 4, 13, 18) call test6 (2, 6, -2, 4, 13, 18, 1, 1, 1) contains subroutine test1 integer :: a(3,3,3), k, kk, kkk, l, ll, lll !\$acc parallel !\$acc loop collapse(3) do 115 k=1,3 dokk: do kk=1,3 do kkk=1,3 a(k,kk,kkk) = 1 enddo enddo dokk 115 continue !\$acc end parallel if (any(a(1:3,1:3,1:3).ne.1)) STOP 1 !\$acc parallel !\$acc loop collapse(3) dol: do 120 l=1,3 doll: do ll=1,3 do lll=1,3 a(l,ll,lll) = 2 enddo enddo doll 120 end do dol !\$acc end parallel if (any(a(1:3,1:3,1:3).ne.2)) STOP 2 end subroutine test1 subroutine test2(v1, v2, v3, v4, v5, v6) integer :: i, j, k, a(1:7, -3:5, 12:19), b(1:7, -3:5, 12:19) integer :: v1, v2, v3, v4, v5, v6 logical :: l, r l = .false. r = .false. a(:, :, :) = 0 b(:, :, :) = 0 !\$acc parallel pcopyin (v1, v2, v3, v4, v5, v6) reduction (.or.:l) !\$acc loop reduction (.or.:l) collapse (3) do i = v1, v2 do j = v3, v4 do k = v5, v6 l = l.or.i.lt.2.or.i.gt.6.or.j.lt.-2.or.j.gt.4 l = l.or.k.lt.13.or.k.gt.18 if (.not.l) a(i, j, k) = a(i, j, k) + 1 end do end do end do !\$acc end parallel do i = v1, v2 do j = v3, v4 do k = v5, v6 r = r.or.i.lt.2.or.i.gt.6.or.j.lt.-2.or.j.gt.4 r = r.or.k.lt.13.or.k.gt.18 if (.not.l) b(i, j, k) = b(i, j, k) + 1 end do end do end do if (l .neqv. r) STOP 3 do i = v1, v2 do j = v3, v4 do k = v5, v6 if (a(i, j, k) .ne. b(i, j, k)) STOP 4 end do end do end do end subroutine test2 subroutine test3(v1, v2, v3, v4, v5, v6, v7, v8, v9) integer :: i, j, k, a(1:7, -3:5, 12:19), b(1:7, -3:5, 12:19) integer :: v1, v2, v3, v4, v5, v6, v7, v8, v9 logical :: l, r l = .false. r = .false. a(:, :, :) = 0 b(:, :, :) = 0 !\$acc parallel pcopyin (v1, v2, v3, v4, v5, v6, v7, v8, v9) reduction (.or.:l) !\$acc loop reduction (.or.:l) collapse (3) do i = v1, v2, v7 do j = v3, v4, v8 do k = v5, v6, v9 l = l.or.i.lt.2.or.i.gt.6.or.j.lt.-2.or.j.gt.4 l = l.or.k.lt.13.or.k.gt.18 if (.not.l) a(i, j, k) = a(i, j, k) + 1 end do end do end do !\$acc end parallel do i = v1, v2, v7 do j = v3, v4, v8 do k = v5, v6, v9 r = r.or.i.lt.2.or.i.gt.6.or.j.lt.-2.or.j.gt.4 r = r.or.k.lt.13.or.k.gt.18 if (.not.l) b(i, j, k) = b(i, j, k) + 1 end do end do end do if (l .neqv. r) STOP 5 do i = v1, v2, v7 do j = v3, v4, v8 do k = v5, v6, v9 if (a(i, j, k) .ne. b(i, j, k)) STOP 6 end do end do end do end subroutine test3 subroutine test4 integer :: i, j, k, a(1:7, -3:5, 12:19), b(1:7, -3:5, 12:19) integer :: v1, v2, v3, v4, v5, v6, v7, v8, v9 logical :: l, r l = .false. r = .false. a(:, :, :) = 0 b(:, :, :) = 0 v1 = 2 v2 = 6 v3 = -2 v4 = 4 v5 = 13 v6 = 18 v7 = 1 v8 = 1 v9 = 1 !\$acc parallel pcopyin (v1, v2, v3, v4, v5, v6, v7, v8, v9) reduction (.or.:l) !\$acc loop reduction (.or.:l) collapse (3) do i = v1, v2, v7 do j = v3, v4, v8 do k = v5, v6, v9 l = l.or.i.lt.2.or.i.gt.6.or.j.lt.-2.or.j.gt.4 l = l.or.k.lt.13.or.k.gt.18 if (.not.l) a(i, j, k) = a(i, j, k) + 1 end do end do end do !\$acc end parallel do i = v1, v2, v7 do j = v3, v4, v8 do k = v5, v6, v9 r = r.or.i.lt.2.or.i.gt.6.or.j.lt.-2.or.j.gt.4 r = r.or.k.lt.13.or.k.gt.18 if (.not.r) b(i, j, k) = b(i, j, k) + 1 end do end do end do if (l .neqv. r) STOP 7 do i = v1, v2, v7 do j = v3, v4, v8 do k = v5, v6, v9 if (a(i, j, k) .ne. b(i, j, k)) STOP 8 end do end do end do end subroutine test4 subroutine test5(v1, v2, v3, v4, v5, v6) integer :: i, j, k, a(1:7, -3:5, 12:19), b(1:7, -3:5, 12:19) integer :: v1, v2, v3, v4, v5, v6 logical :: l, r l = .false. r = .false. a(:, :, :) = 0 b(:, :, :) = 0 !\$acc parallel pcopyin (v1, v2, v3, v4, v5, v6) reduction (.or.:l) !\$acc loop reduction (.or.:l) collapse (3) do i = v1, v2 do j = v3, v4 do k = v5, v6 l = l.or.i.lt.2.or.i.gt.6.or.j.lt.-2.or.j.gt.4 l = l.or.k.lt.13.or.k.gt.18 if (.not.l) a(i, j, k) = a(i, j, k) + 1 end do end do end do !\$acc end parallel do i = v1, v2 do j = v3, v4 do k = v5, v6 r = r.or.i.lt.2.or.i.gt.6.or.j.lt.-2.or.j.gt.4 r = r.or.k.lt.13.or.k.gt.18 if (.not.r) b(i, j, k) = b(i, j, k) + 1 end do end do end do if (l .neqv. r) STOP 9 do i = v1, v2 do j = v3, v4 do k = v5, v6 if (a(i, j, k) .ne. b(i, j, k)) STOP 10 end do end do end do end subroutine test5 subroutine test6(v1, v2, v3, v4, v5, v6, v7, v8, v9) integer :: i, j, k, a(1:7, -3:5, 12:19), b(1:7, -3:5, 12:19) integer :: v1, v2, v3, v4, v5, v6, v7, v8, v9 logical :: l, r l = .false. r = .false. a(:, :, :) = 0 b(:, :, :) = 0 !\$acc parallel pcopyin (v1, v2, v3, v4, v5, v6, v7, v8, v9) reduction (.or.:l) !\$acc loop reduction (.or.:l) collapse (3) do i = v1, v2, v7 do j = v3, v4, v8 do k = v5, v6, v9 l = l.or.i.lt.2.or.i.gt.6.or.j.lt.-2.or.j.gt.4 l = l.or.k.lt.13.or.k.gt.18 if (.not.l) a(i, j, k) = a(i, j, k) + 1 m = i * 100 + j * 10 + k end do end do end do !\$acc end parallel do i = v1, v2, v7 do j = v3, v4, v8 do k = v5, v6, v9 r = r.or.i.lt.2.or.i.gt.6.or.j.lt.-2.or.j.gt.4 r = r.or.k.lt.13.or.k.gt.18 if (.not.r) b(i, j, k) = b(i, j, k) + 1 end do end do end do if (l .neqv. r) STOP 11 do i = v1, v2, v7 do j = v3, v4, v8 do k = v5, v6, v9 if (a(i, j, k) .ne. b(i, j, k)) STOP 12 end do end do end do end subroutine test6 end program sub_collapse_3