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! Verify that gang reduction on orphan OpenACC loops reported as errors.
! { dg-do compile }
subroutine s1
implicit none
integer, parameter :: n = 100
integer :: i, sum
sum = 0
!$acc parallel reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc end parallel
!$acc parallel loop gang reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc parallel
!$acc loop gang reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc end parallel
end subroutine s1
subroutine s2
implicit none
!$acc routine gang
integer, parameter :: n = 100
integer :: i, j, sum
sum = 0
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do i = 1, n
sum = sum + 1
end do
!$acc loop reduction(+:sum)
! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do i = 1, n
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do j = 1, n
sum = sum + 1
end do
end do
end subroutine s2
integer function f1 ()
implicit none
integer, parameter :: n = 100
integer :: i, sum
sum = 0
!$acc parallel reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc end parallel
!$acc parallel loop gang reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc parallel
!$acc loop gang reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc end parallel
f1 = sum
end function f1
integer function f2 ()
implicit none
!$acc routine gang
integer, parameter :: n = 100
integer :: i, j, sum
sum = 0
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do i = 1, n
sum = sum + 1
end do
!$acc loop reduction(+:sum)
! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do i = 1, n
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do j = 1, n
sum = sum + 1
end do
end do
f2 = sum
end function f2
module m
contains
subroutine s3
implicit none
integer, parameter :: n = 100
integer :: i, sum
sum = 0
!$acc parallel reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc end parallel
!$acc parallel loop gang reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc parallel
!$acc loop gang reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc end parallel
end subroutine s3
subroutine s4
implicit none
!$acc routine gang
integer, parameter :: n = 100
integer :: i, j, sum
sum = 0
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do i = 1, n
sum = sum + 1
end do
!$acc loop reduction(+:sum)
! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do i = 1, n
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do j = 1, n
sum = sum + 1
end do
end do
end subroutine s4
integer function f3 ()
implicit none
integer, parameter :: n = 100
integer :: i, sum
sum = 0
!$acc parallel reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc end parallel
!$acc parallel loop gang reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc parallel
!$acc loop gang reduction(+:sum)
do i = 1, n
sum = sum + 1
end do
!$acc end parallel
f3 = sum
end function f3
integer function f4 ()
implicit none
!$acc routine gang
integer, parameter :: n = 100
integer :: i, j, sum
sum = 0
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do i = 1, n
sum = sum + 1
end do
!$acc loop reduction(+:sum)
! { dg-warning "insufficient partitioning available to parallelize loop" "" { target *-*-* } .-1 }
do i = 1, n
!$acc loop gang reduction(+:sum) ! { dg-error "gang reduction on an orphan loop" }
do j = 1, n
sum = sum + 1
end do
end do
f4 = sum
end function f4
end module m
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