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TheRock/compiler/amd-llvm/flang/test/Lower/CUDA/cuda-repack-arrays.cuf
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! RUN: bbc -emit-hlfir -fcuda -frepack-arrays %s -o - | FileCheck %s
! Verify that -frepack-arrays does not generate fir.pack_array for
! CUDA device dummy arguments. Repacking a device array on the host
! would create a host-side temporary whose address is invalid on the
! GPU, leading to cudaErrorIllegalAddress at kernel launch.
subroutine sub1(db, n1, n2)
real, device :: db(:,:)
integer :: n1, n2
db(1,1) = 1.0
end subroutine
! CHECK-LABEL: func.func @_QPsub1(
! CHECK-SAME: %[[ARG0:.*]]: !fir.box<!fir.array<?x?xf32>> {cuf.data_attr = #cuf.cuda<device>
! CHECK-NOT: fir.pack_array
! CHECK: return
subroutine sub2(x, n)
real :: x(:)
integer :: n
x(1) = 1.0
end subroutine
! CHECK-LABEL: func.func @_QPsub2(
! CHECK: fir.pack_array
! CHECK: fir.unpack_array
! CHECK: return
subroutine sub3(db, n)
real, managed :: db(:)
integer :: n
db(1) = 1.0
end subroutine
! CHECK-LABEL: func.func @_QPsub3(
! CHECK-SAME: %[[ARG0:.*]]: !fir.box<!fir.array<?xf32>> {cuf.data_attr = #cuf.cuda<managed>
! CHECK-NOT: fir.pack_array
! CHECK: return