flang/test/Lower/pointer-results-as-arguments.f90

   1 ! Test passing pointers results to pointer dummy arguments
   2 ! RUN: bbc -hlfir=false %s -o - | FileCheck %s
   3
   4 module presults
   5   interface
   6     subroutine bar_scalar(x)
   7       real, pointer :: x
   8     end subroutine
   9     subroutine bar(x)
  10       real, pointer :: x(:, :)
  11     end subroutine
  12     function get_scalar_pointer()
  13       real, pointer :: get_scalar_pointer
  14     end function
  15     function get_pointer()
  16       real, pointer :: get_pointer(:, :)
  17     end function
  18   end interface
  19   real, pointer :: x
  20   real, pointer :: xa(:, :)
  21 contains
  22
  23 ! CHECK-LABEL: test_scalar_null
  24 subroutine test_scalar_null()
  25 ! CHECK: %[[VAL_0:.*]] = fir.alloca !fir.box<!fir.ptr<f32>>
  26 ! CHECK: %[[VAL_1:.*]] = fir.zero_bits !fir.ptr<f32>
  27 ! CHECK: %[[VAL_2:.*]] = fir.embox %[[VAL_1]] : (!fir.ptr<f32>) -> !fir.box<!fir.ptr<f32>>
  28 ! CHECK: fir.store %[[VAL_2]] to %[[VAL_0]] : !fir.ref<!fir.box<!fir.ptr<f32>>>
  29 ! CHECK: fir.call @_QPbar_scalar(%[[VAL_0]]) {{.*}}: (!fir.ref<!fir.box<!fir.ptr<f32>>>) -> ()
  30   call bar_scalar(null())
  31 end subroutine
  32
  33 ! CHECK-LABEL: test_scalar_null_mold
  34 subroutine test_scalar_null_mold()
  35 ! CHECK: %[[VAL_3:.*]] = fir.alloca !fir.box<!fir.ptr<f32>>
  36 ! CHECK: %[[VAL_4:.*]] = fir.zero_bits !fir.ptr<f32>
  37 ! CHECK: %[[VAL_5:.*]] = fir.embox %[[VAL_4]] : (!fir.ptr<f32>) -> !fir.box<!fir.ptr<f32>>
  38 ! CHECK: fir.store %[[VAL_5]] to %[[VAL_3]] : !fir.ref<!fir.box<!fir.ptr<f32>>>
  39 ! CHECK: fir.call @_QPbar_scalar(%[[VAL_3]]) {{.*}}: (!fir.ref<!fir.box<!fir.ptr<f32>>>) -> ()
  40   call bar_scalar(null(x))
  41 end subroutine
  42
  43 ! CHECK-LABEL: test_scalar_result
  44 subroutine test_scalar_result()
  45 ! CHECK: %[[VAL_6:.*]] = fir.alloca !fir.box<!fir.ptr<f32>> {bindc_name = ".result"}
  46 ! CHECK: %[[VAL_7:.*]] = fir.call @_QPget_scalar_pointer() {{.*}}: () -> !fir.box<!fir.ptr<f32>>
  47 ! CHECK: fir.save_result %[[VAL_7]] to %[[VAL_6]] : !fir.box<!fir.ptr<f32>>, !fir.ref<!fir.box<!fir.ptr<f32>>>
  48 ! CHECK: fir.call @_QPbar_scalar(%[[VAL_6]]) {{.*}}: (!fir.ref<!fir.box<!fir.ptr<f32>>>) -> ()
  49   call bar_scalar(get_scalar_pointer())
  50 end subroutine
  51
  52 ! CHECK-LABEL: test_null
  53 subroutine test_null()
  54 ! CHECK: %[[VAL_8:.*]] = arith.constant 0 : index
  55 ! CHECK: %[[VAL_9:.*]] = fir.alloca !fir.box<!fir.ptr<!fir.array<?x?xf32>>>
  56 ! CHECK: %[[VAL_10:.*]] = fir.zero_bits !fir.ptr<!fir.array<?x?xf32>>
  57 ! CHECK: %[[VAL_11:.*]] = fir.shape %[[VAL_8]], %[[VAL_8]] : (index, index) -> !fir.shape<2>
  58 ! CHECK: %[[VAL_12:.*]] = fir.embox %[[VAL_10]](%[[VAL_11]]) : (!fir.ptr<!fir.array<?x?xf32>>, !fir.shape<2>) -> !fir.box<!fir.ptr<!fir.array<?x?xf32>>>
  59 ! CHECK: fir.store %[[VAL_12]] to %[[VAL_9]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?x?xf32>>>>
  60 ! CHECK: fir.call @_QPbar(%[[VAL_9]]) {{.*}}: (!fir.ref<!fir.box<!fir.ptr<!fir.array<?x?xf32>>>>) -> ()
  61   call bar(null())
  62 end subroutine
  63
  64 ! CHECK-LABEL: test_null_mold
  65 subroutine test_null_mold()
  66 ! CHECK: %[[VAL_13:.*]] = arith.constant 0 : index
  67 ! CHECK: %[[VAL_14:.*]] = fir.alloca !fir.box<!fir.ptr<!fir.array<?x?xf32>>>
  68 ! CHECK: %[[VAL_15:.*]] = fir.zero_bits !fir.ptr<!fir.array<?x?xf32>>
  69 ! CHECK: %[[VAL_16:.*]] = fir.shape %[[VAL_13]], %[[VAL_13]] : (index, index) -> !fir.shape<2>
  70 ! CHECK: %[[VAL_17:.*]] = fir.embox %[[VAL_15]](%[[VAL_16]]) : (!fir.ptr<!fir.array<?x?xf32>>, !fir.shape<2>) -> !fir.box<!fir.ptr<!fir.array<?x?xf32>>>
  71 ! CHECK: fir.store %[[VAL_17]] to %[[VAL_14]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?x?xf32>>>>
  72 ! CHECK: fir.call @_QPbar(%[[VAL_14]]) {{.*}}: (!fir.ref<!fir.box<!fir.ptr<!fir.array<?x?xf32>>>>) -> ()
  73   call bar(null(xa))
  74 end subroutine
  75
  76 ! CHECK-LABEL: test_result
  77 subroutine test_result()
  78 ! CHECK: %[[VAL_18:.*]] = fir.alloca !fir.box<!fir.ptr<!fir.array<?x?xf32>>> {bindc_name = ".result"}
  79 ! CHECK: %[[VAL_19:.*]] = fir.call @_QPget_pointer() {{.*}}: () -> !fir.box<!fir.ptr<!fir.array<?x?xf32>>>
  80 ! CHECK: fir.save_result %[[VAL_19]] to %[[VAL_18]] : !fir.box<!fir.ptr<!fir.array<?x?xf32>>>, !fir.ref<!fir.box<!fir.ptr<!fir.array<?x?xf32>>>>
  81 ! CHECK: fir.call @_QPbar(%[[VAL_18]]) {{.*}}: (!fir.ref<!fir.box<!fir.ptr<!fir.array<?x?xf32>>>>) -> ()
  82   call bar(get_pointer())
  83 end subroutine
  84
  85 end module