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TheRock/compiler/amd-llvm/flang/test/Lower/OpenMP/target-parameter-array.f90
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

90 lines
2.9 KiB
Fortran

! RUN: %flang_fc1 -emit-hlfir -fopenmp %s -o - | FileCheck %s
! Test that parameter (constant) arrays can be mapped to OpenMP target regions
! and are mapped as read-only when accessed with dynamic indices.
module param_array_module
implicit none
integer, parameter :: dp = selected_real_kind(15, 307)
! Parameter arrays that should be mapped to device
real(dp), parameter :: const_array(3) = [1.0_dp, 2.0_dp, 3.0_dp]
integer, parameter :: int_array(4) = [10, 20, 30, 40]
contains
! Parameter array with dynamic index in target region with teams distribute
! CHECK-LABEL: func.func @_QMparam_array_modulePtest_param_array_target
subroutine test_param_array_target(idx)
integer, intent(in) :: idx
integer :: i
real(dp) :: result
! CHECK: omp.map.info{{.*}}map_clauses(implicit, to){{.*}}{name = "const_array"}
!$omp target teams distribute parallel do
do i = 1, 3
! Access parameter array with dynamic index
result = const_array(idx)
end do
!$omp end target teams distribute parallel do
end subroutine test_param_array_target
! Integer parameter array in simple target region
! CHECK-LABEL: func.func @_QMparam_array_modulePtest_int_param_array
subroutine test_int_param_array(idx)
integer, intent(in) :: idx
integer :: result
! CHECK: omp.map.info{{.*}}map_clauses(implicit, to){{.*}}{name = "int_array"}
!$omp target
! Access parameter array with dynamic index
result = int_array(idx)
!$omp end target
end subroutine test_int_param_array
! Verify scalar parameters are NOT mapped (can be inlined)
! CHECK-LABEL: func.func @_QMparam_array_modulePtest_scalar_param
subroutine test_scalar_param()
integer, parameter :: scalar_const = 42
integer :: result
! CHECK-NOT: omp.map.info{{.*}}{name = "scalar_const"}
!$omp target
result = scalar_const
!$omp end target
end subroutine test_scalar_param
! Test character scalar parameter with dynamic substring access
! CHECK-LABEL: func.func @_QMparam_array_modulePtest_char_substring
subroutine test_char_substring(start_idx, end_idx)
integer, intent(in) :: start_idx, end_idx
character(len=20), parameter :: char_scalar = "constant_string_data"
character(len=10) :: result
! CHECK: omp.map.info{{.*}}map_clauses(implicit, to){{.*}}{name = "char_scalar"}
!$omp target
! Dynamic substring access - character scalar must be mapped
result = char_scalar(start_idx:end_idx)
!$omp end target
end subroutine test_char_substring
! Verify character scalar with constant substring is NOT mapped
! CHECK-LABEL: func.func @_QMparam_array_modulePtest_char_const_substring
subroutine test_char_const_substring()
character(len=20), parameter :: char_const = "constant_string_data"
character(len=5) :: result
! CHECK-NOT: omp.map.info{{.*}}{name = "char_const"}
!$omp target
! Constant substring access - can be inlined, no mapping needed
result = char_const(1:5)
!$omp end target
end subroutine test_char_const_substring
end module param_array_module