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TheRock/compiler/amd-llvm/flang/test/Semantics/OpenACC/acc-host-data-common.f90
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

37 lines
1.0 KiB
Fortran

! RUN: %python %S/../test_errors.py %s %flang -fopenacc
! Regression test: a variable that lives in a COMMON block must not be
! rejected when it appears in an OpenACC `host_data use_device(...)`
! clause. The CUDA Fortran restriction "object with ATTRIBUTES(USEDEVICE)
! may not be in COMMON" applies only to user-spelled
! `attributes(usedevice)` dummy arguments, not to the internal
! CUDADataAttr::UseDevice marker that name resolution attaches to
! construct-scoped copies of `use_device` operands.
subroutine vadd(a, b, c, n)
real(8) :: a(*), b(*), c(*)
integer :: n, i
do i = 1, n - 1
c(i) = a(i) + b(i)
end do
end subroutine
program acc_host_data_common
integer, parameter :: N = 100
real(8) :: a(2:N), b(2:N), c0(2:N), c1(2:N)
common /arrays/ a, b, c0, c1
integer :: i
!$acc data copy(a, b, c0)
!$acc parallel loop
do i = 2, N
a(i) = i
b(i) = 2.0_8 * i
end do
!$acc host_data use_device(a, b, c0)
call vadd(a, b, c0, N)
!$acc end host_data
!$acc end data
end program