! RUN: %flang_fc1 -emit-hlfir %s -o - | FileCheck %s

! Test allocatable dummy argument on callee side

! CHECK-LABEL: func @_QPtest_scalar(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<f32>>>{{.*}})
subroutine test_scalar(x)
  real, allocatable :: x

  print *, x
  ! CHECK: %[[x:.*]]:2 = hlfir.declare %[[arg0]]{{.*}}allocatable
  ! CHECK: %[[box:.*]] = fir.load %[[x]]#0 : !fir.ref<!fir.box<!fir.heap<f32>>>
  ! CHECK: %[[addr:.*]] = fir.box_addr %[[box]] : (!fir.box<!fir.heap<f32>>) -> !fir.heap<f32>
  ! CHECK: %[[val:.*]] = fir.load %[[addr]] : !fir.heap<f32>
end subroutine

! CHECK-LABEL: func @_QPtest_array(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.array<?x?xi32>>>>{{.*}})
subroutine test_array(x)
  integer, allocatable :: x(:,:)

  print *, x(1,2)
  ! CHECK: %[[x:.*]]:2 = hlfir.declare %[[arg0]]{{.*}}allocatable
  ! CHECK: %[[box:.*]] = fir.load %[[x]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x?xi32>>>>
  ! CHECK: %[[elem:.*]] = hlfir.designate %[[box]] (%{{.*}}, %{{.*}})  : (!fir.box<!fir.heap<!fir.array<?x?xi32>>>, index, index) -> !fir.ref<i32>
  ! CHECK: fir.load %[[elem]] : !fir.ref<i32>
end subroutine

! CHECK-LABEL: func @_QPtest_char_scalar_deferred(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>{{.*}})
subroutine test_char_scalar_deferred(c)
  character(:), allocatable :: c
  external foo1
  call foo1(c)
  ! CHECK: %[[c:.*]]:2 = hlfir.declare %[[arg0]]{{.*}}allocatable
  ! CHECK: %[[box:.*]] = fir.load %[[c]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>
  ! CHECK-DAG: %[[addr:.*]] = fir.box_addr %[[box]] : (!fir.box<!fir.heap<!fir.char<1,?>>>) -> !fir.heap<!fir.char<1,?>>
  ! CHECK-DAG: %[[box1:.*]] = fir.load %[[c]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>
  ! CHECK-DAG: %[[len:.*]] = fir.box_elesize %[[box1]] : (!fir.box<!fir.heap<!fir.char<1,?>>>) -> index
  ! CHECK: %[[boxchar:.*]] = fir.emboxchar %[[addr]], %[[len]] : (!fir.heap<!fir.char<1,?>>, index) -> !fir.boxchar<1>
  ! CHECK: fir.call @_QPfoo1(%[[boxchar]]) {{.*}}: (!fir.boxchar<1>) -> ()
end subroutine

! CHECK-LABEL: func @_QPtest_char_scalar_explicit_cst(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.char<1,10>>>>{{.*}})
subroutine test_char_scalar_explicit_cst(c)
  character(10), allocatable :: c
  external foo1
  call foo1(c)
  ! CHECK: %[[c:.*]]:2 = hlfir.declare %[[arg0]]{{.*}}allocatable
  ! CHECK: %[[box:.*]] = fir.load %[[c]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.char<1,10>>>>
  ! CHECK: %[[addr:.*]] = fir.box_addr %[[box]] : (!fir.box<!fir.heap<!fir.char<1,10>>>) -> !fir.heap<!fir.char<1,10>>
  ! CHECK: %[[cast:.*]] = fir.convert %[[addr]] : (!fir.heap<!fir.char<1,10>>) -> !fir.ref<!fir.char<1,10>>
  ! CHECK: %[[boxchar:.*]] = fir.emboxchar %[[cast]], %c10{{.*}} : (!fir.ref<!fir.char<1,10>>, index) -> !fir.boxchar<1>
  ! CHECK: fir.call @_QPfoo1(%[[boxchar]]) {{.*}}: (!fir.boxchar<1>) -> ()
end subroutine

! CHECK-LABEL: func @_QPtest_char_scalar_explicit_dynamic(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>{{.*}}, %[[arg1:.*]]: !fir.ref<i32>{{.*}})
subroutine test_char_scalar_explicit_dynamic(c, n)
  integer :: n
  character(n), allocatable :: c
  external foo1
  ! Check that the length expr was evaluated before the execution parts.
  ! CHECK: %[[n:.*]]:2 = hlfir.declare %[[arg1]]
  ! CHECK: %[[raw_len:.*]] = fir.load %[[n]]#0 : !fir.ref<i32>
  ! CHECK: %[[c0_i32:.*]] = arith.constant 0 : i32
  ! CHECK: %[[cmp:.*]] = arith.cmpi sgt, %[[raw_len]], %[[c0_i32]] : i32
  ! CHECK: %[[len:.*]] = arith.select %[[cmp]], %[[raw_len]], %[[c0_i32]] : i32
  ! CHECK: %[[c:.*]]:2 = hlfir.declare %[[arg0]] typeparams %[[len]]{{.*}}allocatable
  n = n + 1
  ! CHECK: hlfir.assign %{{.*}} to %[[n]]#0 : i32, !fir.ref<i32>
  call foo1(c)
  ! CHECK: %[[box:.*]] = fir.load %[[c]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>
  ! CHECK: %[[addr:.*]] = fir.box_addr %[[box]] : (!fir.box<!fir.heap<!fir.char<1,?>>>) -> !fir.heap<!fir.char<1,?>>
  ! CHECK: %[[boxchar:.*]] = fir.emboxchar %[[addr]], %[[len]] : (!fir.heap<!fir.char<1,?>>, i32) -> !fir.boxchar<1>
  ! CHECK: fir.call @_QPfoo1(%[[boxchar]]) {{.*}}: (!fir.boxchar<1>) -> ()
end subroutine

! CHECK-LABEL: func @_QPtest_char_array_deferred(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>{{.*}})
subroutine test_char_array_deferred(c)
  character(:), allocatable :: c(:)
  external foo1
  call foo1(c(10))
  ! CHECK: %[[c:.*]]:2 = hlfir.declare %[[arg0]]{{.*}}allocatable
  ! CHECK: %[[box:.*]] = fir.load %[[c]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>
  ! CHECK: %[[len:.*]] = fir.box_elesize %[[box]] : (!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>) -> index
  ! CHECK: %[[boxchar:.*]] = hlfir.designate %[[box]] (%{{.*}})  typeparams %[[len]] : (!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>, index, index) -> !fir.boxchar<1>
  ! CHECK: fir.call @_QPfoo1(%[[boxchar]]) {{.*}}: (!fir.boxchar<1>) -> ()
end subroutine

! CHECK-LABEL: func @_QPtest_char_array_explicit_cst(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,10>>>>>{{.*}})
subroutine test_char_array_explicit_cst(c)
  character(10), allocatable :: c(:)
  external foo1
  call foo1(c(3))
  ! CHECK: %[[c:.*]]:2 = hlfir.declare %[[arg0]]{{.*}}allocatable
  ! CHECK: %[[box:.*]] = fir.load %[[c]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,10>>>>>
  ! CHECK: %[[elem:.*]] = hlfir.designate %[[box]] (%{{.*}})  typeparams %c10{{.*}} : (!fir.box<!fir.heap<!fir.array<?x!fir.char<1,10>>>>, index, index) -> !fir.ref<!fir.char<1,10>>
  ! CHECK: %[[boxchar:.*]] = fir.emboxchar %[[elem]], %c10{{.*}} : (!fir.ref<!fir.char<1,10>>, index) -> !fir.boxchar<1>
  ! CHECK: fir.call @_QPfoo1(%[[boxchar]]) {{.*}}: (!fir.boxchar<1>) -> ()
end subroutine

! CHECK-LABEL: func @_QPtest_char_array_explicit_dynamic(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>{{.*}}, %[[arg1:.*]]: !fir.ref<i32>{{.*}})
subroutine test_char_array_explicit_dynamic(c, n)
  integer :: n
  character(n), allocatable :: c(:)
  external foo1
  ! Check that the length expr was evaluated before the execution parts.
  ! CHECK: %[[n:.*]]:2 = hlfir.declare %[[arg1]]
  ! CHECK: %[[raw_len:.*]] = fir.load %[[n]]#0 : !fir.ref<i32>
  ! CHECK: %[[c0_i32:.*]] = arith.constant 0 : i32
  ! CHECK: %[[cmp:.*]] = arith.cmpi sgt, %[[raw_len]], %[[c0_i32]] : i32
  ! CHECK: %[[len:.*]] = arith.select %[[cmp]], %[[raw_len]], %[[c0_i32]] : i32
  ! CHECK: %[[c:.*]]:2 = hlfir.declare %[[arg0]] typeparams %[[len]]{{.*}}allocatable
  n = n + 1
  ! CHECK: hlfir.assign %{{.*}} to %[[n]]#0 : i32, !fir.ref<i32>
  call foo1(c(1))
  ! CHECK: %[[box:.*]] = fir.load %[[c]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>>
  ! CHECK: %[[boxchar:.*]] = hlfir.designate %[[box]] (%{{.*}})  typeparams %[[len]] : (!fir.box<!fir.heap<!fir.array<?x!fir.char<1,?>>>>, index, i32) -> !fir.boxchar<1>
  ! CHECK: fir.call @_QPfoo1(%[[boxchar]]) {{.*}}: (!fir.boxchar<1>) -> ()
end subroutine

! Check that when reading allocatable length from descriptor, the width is taking
! into account when the kind is not 1.

! CHECK-LABEL: func @_QPtest_char_scalar_deferred_k2(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.char<2,?>>>>{{.*}})
subroutine test_char_scalar_deferred_k2(c)
  character(kind=2, len=:), allocatable :: c
  external foo2
  call foo2(c)
  ! CHECK: %[[c:.*]]:2 = hlfir.declare %[[arg0]]{{.*}}allocatable
  ! CHECK: %[[box:.*]] = fir.load %[[c]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.char<2,?>>>>
  ! CHECK-DAG: %[[addr:.*]] = fir.box_addr %[[box]] : (!fir.box<!fir.heap<!fir.char<2,?>>>) -> !fir.heap<!fir.char<2,?>>
  ! CHECK-DAG: %[[box1:.*]] = fir.load %[[c]]#0 : !fir.ref<!fir.box<!fir.heap<!fir.char<2,?>>>>
  ! CHECK-DAG: %[[size:.*]] = fir.box_elesize %[[box1]] : (!fir.box<!fir.heap<!fir.char<2,?>>>) -> index
  ! CHECK-DAG: %[[len:.*]] = arith.divsi %[[size]], %c2{{.*}} : index
  ! CHECK: %[[boxchar:.*]] = fir.emboxchar %[[addr]], %[[len]] : (!fir.heap<!fir.char<2,?>>, index) -> !fir.boxchar<2>
  ! CHECK: fir.call @_QPfoo2(%[[boxchar]]) {{.*}}: (!fir.boxchar<2>) -> ()
end subroutine

! Check that assumed length character allocatables are reading the length from
! the descriptor.

! CHECK-LABEL: _QPtest_char_assumed(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>{{.*}}
subroutine test_char_assumed(a)
  integer :: n
  character(len=*), allocatable :: a
  ! CHECK: %[[argLoad:.*]] = fir.load %[[arg0]] : !fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>
  ! CHECK: %[[argLen:.*]] = fir.box_elesize %[[argLoad]] : (!fir.box<!fir.heap<!fir.char<1,?>>>) -> index
  ! CHECK: hlfir.declare %[[arg0]] typeparams %[[argLen]]{{.*}}allocatable

  n = len(a)
  ! CHECK: %[[argLenCast:.*]] = fir.convert %[[argLen]] : (index) -> i32
  ! CHECK: hlfir.assign %[[argLenCast]] to %{{.*}} : i32, !fir.ref<i32>
end subroutine

! CHECK-LABEL: _QPtest_char_assumed_optional(
! CHECK-SAME: %[[arg0:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>{{.*}}
subroutine test_char_assumed_optional(a)
  integer :: n
  character(len=*), allocatable, optional :: a
  ! CHECK: %[[argPresent:.*]] = fir.is_present %[[arg0]] : (!fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>) -> i1
  ! CHECK: %[[argLen:.*]] = fir.if %[[argPresent]] -> (index) {
  ! CHECK:   %[[argLoad:.*]] = fir.load %[[arg0]] : !fir.ref<!fir.box<!fir.heap<!fir.char<1,?>>>>
  ! CHECK:   %[[argEleSz:.*]] = fir.box_elesize %[[argLoad]] : (!fir.box<!fir.heap<!fir.char<1,?>>>) -> index
  ! CHECK:   fir.result %[[argEleSz]] : index
  ! CHECK: } else {
  ! CHECK:   %[[undef:.*]] = fir.undefined index
  ! CHECK:   fir.result %[[undef]] : index
  ! CHECK: %[[a:.*]]:2 = hlfir.declare %[[arg0]] typeparams %[[argLen]]{{.*}}allocatable, optional

  if (present(a)) then
    n = len(a)
    ! CHECK:   %[[argLenCast:.*]] = fir.convert %[[argLen]] : (index) -> i32
    ! CHECK:   hlfir.assign %[[argLenCast]] to %{{.*}} : i32, !fir.ref<i32>
  endif
end subroutine