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! See also loop-1-2.f95.
module test
implicit none
contains
subroutine test1
integer :: i, j, k, b(10)
integer, dimension (30) :: a
double precision :: d
real :: r
i = 0
!$acc loop
do 100 ! { dg-error "cannot be a DO WHILE or DO without loop control" }
if (i .gt. 0) exit ! { dg-error "EXIT statement" }
100 i = i + 1
i = 0
!$acc loop
do ! { dg-error "cannot be a DO WHILE or DO without loop control" }
if (i .gt. 0) exit ! { dg-error "EXIT statement" }
i = i + 1
end do
i = 0
!$acc loop
do 200 while (i .lt. 4) ! { dg-error "cannot be a DO WHILE or DO without loop control" }
200 i = i + 1
!$acc loop
do while (i .lt. 8) ! { dg-error "cannot be a DO WHILE or DO without loop control" }
i = i + 1
end do
!$acc loop
do 300 d = 1, 30, 6
i = d
300 a(i) = 1
! { dg-warning "Deleted feature: Loop variable at .1. must be integer" "" { target *-*-* } 32 }
! { dg-error "ACC LOOP iteration variable must be of type integer" "" { target *-*-* } 32 }
!$acc loop
do d = 1, 30, 5
i = d
a(i) = 2
end do
! { dg-warning "Deleted feature: Loop variable at .1. must be integer" "" { target *-*-* } 38 }
! { dg-error "ACC LOOP iteration variable must be of type integer" "" { target *-*-* } 38 }
!$acc loop
do i = 1, 30
if (i .eq. 16) exit ! { dg-error "EXIT statement" }
end do
!$acc loop
outer: do i = 1, 30
do j = 5, 10
if (i .eq. 6 .and. j .eq. 7) exit outer ! { dg-error "EXIT statement" }
end do
end do outer
last: do i = 1, 30
end do last
! different types of loop are allowed
!$acc loop
do i = 1,10
end do
!$acc loop
do 400, i = 1,10
400 a(i) = i
! after loop directive must be loop
!$acc loop
a(1) = 1 ! { dg-error "Expected DO loop" }
do i = 1,10
enddo
! combined directives may be used with/without end
!$acc parallel loop
do i = 1,10
enddo
!$acc parallel loop
do i = 1,10
enddo
!$acc end parallel loop
!$acc kernels loop
do i = 1,10
enddo
!$acc kernels loop
do i = 1,10
enddo
!$acc end kernels loop
!$acc kernels loop reduction(max:i)
do i = 1,10
enddo
!$acc kernels
!$acc loop reduction(max:i)
do i = 1,10
enddo
!$acc end kernels
!$acc parallel loop collapse(0) ! { dg-error "constant positive integer" }
do i = 1,10
enddo
!$acc parallel loop collapse(-1) ! { dg-error "constant positive integer" }
do i = 1,10
enddo
!$acc parallel loop collapse(i) ! { dg-error "Constant expression required" }
do i = 1,10
enddo
!$acc parallel loop collapse(4) ! { dg-error "not enough DO loops for collapsed" }
do i = 1, 3
do j = 4, 6
do k = 5, 7
a(i+j-k) = i + j + k
end do
end do
end do
!$acc parallel loop collapse(2)
do i = 1, 5, 2
do j = i + 1, 7, i ! { dg-error "collapsed loops don.t form rectangular iteration space" }
end do
end do
!$acc parallel loop collapse(2)
do i = 1, 3
do j = 4, 6
end do
end do
!$acc parallel loop collapse(2)
do i = 1, 3
do j = 4, 6
end do
k = 4
end do
!$acc parallel loop collapse(3-1)
do i = 1, 3
do j = 4, 6
end do
k = 4
end do
!$acc parallel loop collapse(1+1)
do i = 1, 3
do j = 4, 6
end do
k = 4
end do
!$acc parallel loop collapse(2)
do i = 1, 3
do ! { dg-error "cannot be a DO WHILE or DO without loop control" }
end do
end do
!$acc parallel loop collapse(2)
do i = 1, 3
do r = 4, 6
end do
! { dg-warning "Deleted feature: Loop variable at .1. must be integer" "" { target *-*-* } 151 }
! { dg-error "ACC LOOP iteration variable must be of type integer" "" { target *-*-* } 151 }
end do
! Both seq and independent are not allowed
!$acc loop independent seq ! { dg-error "SEQ conflicts with INDEPENDENT" }
do i = 1,10
enddo
!$acc cache (a(1:10)) ! { dg-error "ACC CACHE directive must be inside of loop" }
do i = 1,10
!$acc cache(a(i:i+1))
enddo
do i = 1,10
!$acc cache(a(i:i+1))
a(i) = i
!$acc cache(a(i+2:i+2+1))
enddo
end subroutine test1
end module test
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