flang/test/Lower/pointer-initial-target.f90

   1 ! Test lowering of pointer initial target
   2 ! RUN: bbc -emit-fir %s -o - | FileCheck %s
   3
   4 ! -----------------------------------------------------------------------------
   5 !     Test scalar initial data target that are simple names
   6 ! -----------------------------------------------------------------------------
   7
   8 subroutine scalar()
   9   real, save, target :: x
  10   real, pointer :: p => x
  11 ! CHECK-LABEL: fir.global internal @_QFscalarEp : !fir.box<!fir.ptr<f32>>
  12   ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalarEx) : !fir.ref<f32>
  13   ! CHECK: %[[box:.*]] = fir.embox %[[x]] : (!fir.ref<f32>) -> !fir.box<f32>
  14   ! CHECK: %[[rebox:.*]] = fir.rebox %[[box]] : (!fir.box<f32>) -> !fir.box<!fir.ptr<f32>>
  15   ! CHECK: fir.has_value %[[rebox]] : !fir.box<!fir.ptr<f32>>
  16 end subroutine
  17
  18 subroutine scalar_char()
  19   character(10), save, target :: x
  20   character(:), pointer :: p => x
  21 ! CHECK-LABEL: fir.global internal @_QFscalar_charEp : !fir.box<!fir.ptr<!fir.char<1,?>>>
  22   ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalar_charEx) : !fir.ref<!fir.char<1,10>>
  23   ! CHECK: %[[box:.*]] = fir.embox %[[x]] : (!fir.ref<!fir.char<1,10>>) -> !fir.box<!fir.char<1,10>>
  24   ! CHECK: %[[rebox:.*]] = fir.rebox %[[box]] : (!fir.box<!fir.char<1,10>>) -> !fir.box<!fir.ptr<!fir.char<1,?>>>
  25   ! CHECK: fir.has_value %[[rebox]] : !fir.box<!fir.ptr<!fir.char<1,?>>>
  26 end subroutine
  27
  28 subroutine scalar_char_2()
  29   character(10), save, target :: x
  30   character(10), pointer :: p => x
  31 ! CHECK-LABEL: fir.global internal @_QFscalar_char_2Ep : !fir.box<!fir.ptr<!fir.char<1,10>>>
  32   ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalar_char_2Ex) : !fir.ref<!fir.char<1,10>>
  33   ! CHECK: %[[box:.*]] = fir.embox %[[x]] : (!fir.ref<!fir.char<1,10>>) -> !fir.box<!fir.char<1,10>>
  34   ! CHECK: %[[rebox:.*]] = fir.rebox %[[box]] : (!fir.box<!fir.char<1,10>>) -> !fir.box<!fir.ptr<!fir.char<1,10>>>
  35   ! CHECK: fir.has_value %[[rebox]] : !fir.box<!fir.ptr<!fir.char<1,10>>>
  36 end subroutine
  37
  38 subroutine scalar_derived()
  39   type t
  40     real :: x
  41     integer :: i
  42   end type
  43   type(t), save, target :: x
  44   type(t), pointer :: p => x
  45 ! CHECK-LABEL: fir.global internal @_QFscalar_derivedEp : !fir.box<!fir.ptr<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>>
  46   ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalar_derivedEx) : !fir.ref<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>
  47   ! CHECK: %[[box:.*]] = fir.embox %[[x]] : (!fir.ref<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>) -> !fir.box<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>
  48   ! CHECK: %[[rebox:.*]] = fir.rebox %[[box]] : (!fir.box<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>) -> !fir.box<!fir.ptr<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>>
  49   ! CHECK: fir.has_value %[[rebox]] : !fir.box<!fir.ptr<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>>
  50 end subroutine
  51
  52 subroutine scalar_null()
  53   real, pointer :: p => NULL()
  54 ! CHECK-LABEL: fir.global internal @_QFscalar_nullEp : !fir.box<!fir.ptr<f32>>
  55   ! CHECK: %[[zero:.*]] = fir.zero_bits !fir.ptr<f32>
  56   ! CHECK: %[[box:.*]] = fir.embox %[[zero]] : (!fir.ptr<f32>) -> !fir.box<!fir.ptr<f32>>
  57   ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<f32>>
  58 end subroutine
  59
  60 ! -----------------------------------------------------------------------------
  61 !     Test array initial data target that are simple names
  62 ! -----------------------------------------------------------------------------
  63
  64 subroutine array()
  65   real, save, target :: x(100)
  66   real, pointer :: p(:) => x
  67 ! CHECK-LABEL: fir.global internal @_QFarrayEp : !fir.box<!fir.ptr<!fir.array<?xf32>>>
  68   ! CHECK: %[[x:.*]] = fir.address_of(@_QFarrayEx) : !fir.ref<!fir.array<100xf32>>
  69   ! CHECK: %[[shape:.*]] = fir.shape %c100{{.*}} : (index) -> !fir.shape<1>
  70   ! CHECK: %[[box:.*]] = fir.embox %[[x]](%[[shape]]) : (!fir.ref<!fir.array<100xf32>>, !fir.shape<1>) -> !fir.box<!fir.array<100xf32>>
  71   ! CHECK: %[[rebox:.*]] = fir.rebox %[[box]] : (!fir.box<!fir.array<100xf32>>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
  72   ! CHECK: fir.has_value %[[rebox]] : !fir.box<!fir.ptr<!fir.array<?xf32>>>
  73 end subroutine
  74
  75 subroutine array_char()
  76   character(10), save, target :: x(20)
  77   character(:), pointer :: p(:) => x
  78 ! CHECK-LABEL: fir.global internal @_QFarray_charEp : !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,?>>>>
  79   ! CHECK: %[[x:.*]] = fir.address_of(@_QFarray_charEx) : !fir.ref<!fir.array<20x!fir.char<1,10>>>
  80   ! CHECK: %[[shape:.*]] = fir.shape %c20{{.*}} : (index) -> !fir.shape<1>
  81   ! CHECK: %[[box:.*]] = fir.embox %[[x]](%[[shape]]) : (!fir.ref<!fir.array<20x!fir.char<1,10>>>, !fir.shape<1>) -> !fir.box<!fir.array<20x!fir.char<1,10>>
  82   ! CHECK: %[[rebox:.*]] = fir.rebox %[[box]] : (!fir.box<!fir.array<20x!fir.char<1,10>>>) -> !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,?>>>>
  83   ! CHECK: fir.has_value %[[rebox]] : !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,?>>>>
  84 end subroutine
  85
  86 subroutine array_char_2()
  87   character(10), save, target :: x(20)
  88   character(10), pointer :: p(:) => x
  89 ! CHECK-LABEL: fir.global internal @_QFarray_char_2Ep : !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,10>>>>
  90   ! CHECK: %[[x:.*]] = fir.address_of(@_QFarray_char_2Ex) : !fir.ref<!fir.array<20x!fir.char<1,10>>>
  91   ! CHECK: %[[shape:.*]] = fir.shape %c20{{.*}} : (index) -> !fir.shape<1>
  92   ! CHECK: %[[box:.*]] = fir.embox %[[x]](%[[shape]]) : (!fir.ref<!fir.array<20x!fir.char<1,10>>>, !fir.shape<1>) -> !fir.box<!fir.array<20x!fir.char<1,10>>>
  93   ! CHECK: %[[rebox:.*]] = fir.rebox %[[box]] : (!fir.box<!fir.array<20x!fir.char<1,10>>>) -> !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,10>>>>
  94   ! CHECK: fir.has_value %[[rebox]] : !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,10>>>>
  95 end subroutine
  96
  97 subroutine array_derived()
  98   type t
  99     real :: x
 100     integer :: i
 101   end type
 102   type(t), save, target :: x(100)
 103   type(t), pointer :: p(:) => x
 104 ! CHECK-LABEL: fir.global internal @_QFarray_derivedEp : !fir.box<!fir.ptr<!fir.array<?x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>>
 105   ! CHECK: %[[x:.*]] = fir.address_of(@_QFarray_derivedEx) : !fir.ref<!fir.array<100x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>
 106   ! CHECK: %[[shape:.*]] = fir.shape %c100{{.*}} : (index) -> !fir.shape<1>
 107   ! CHECK: %[[box:.*]] = fir.embox %[[x]](%[[shape]]) : (!fir.ref<!fir.array<100x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>, !fir.shape<1>) -> !fir.box<!fir.array<100x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>
 108   ! CHECK: %[[rebox:.*]] = fir.rebox %[[box]] : (!fir.box<!fir.array<100x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>) -> !fir.box<!fir.ptr<!fir.array<?x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>>
 109   ! CHECK: fir.has_value %[[rebox]] : !fir.box<!fir.ptr<!fir.array<?x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>>
 110 end subroutine
 111
 112 subroutine array_null()
 113   real, pointer :: p(:) => NULL()
 114 ! CHECK-LABEL: fir.global internal @_QFarray_nullEp : !fir.box<!fir.ptr<!fir.array<?xf32>>>
 115   ! CHECK: %[[zero:.*]] = fir.zero_bits !fir.ptr<!fir.array<?xf32>>
 116   ! CHECK: %[[shape:.*]] = fir.shape %c0{{.*}} : (index) -> !fir.shape<1>
 117   ! CHECK: %[[box:.*]] = fir.embox %[[zero]](%[[shape]]) : (!fir.ptr<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
 118   ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<!fir.array<?xf32>>>
 119 end subroutine
 120
 121 ! -----------------------------------------------------------------------------
 122 !     Test scalar initial data target that are data references
 123 ! -----------------------------------------------------------------------------
 124
 125 subroutine scalar_ref()
 126   real, save, target :: x(4:100)
 127   real, pointer :: p => x(50)
 128 ! CHECK-LABEL: fir.global internal @_QFscalar_refEp : !fir.box<!fir.ptr<f32>> {
 129   ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalar_refEx) : !fir.ref<!fir.array<97xf32>>
 130   ! CHECK: %[[lb:.*]] = fir.convert %c4 : (index) -> i64
 131   ! CHECK: %[[idx:.*]] = arith.subi %c50{{.*}}, %[[lb]] : i64
 132   ! CHECK: %[[elt:.*]] = fir.coordinate_of %[[x]], %[[idx]] : (!fir.ref<!fir.array<97xf32>>, i64) -> !fir.ref<f32>
 133   ! CHECK: %[[box:.*]] = fir.embox %[[elt]] : (!fir.ref<f32>) -> !fir.box<f32>
 134   ! CHECK: %[[rebox:.*]] = fir.rebox %[[box]] : (!fir.box<f32>) -> !fir.box<!fir.ptr<f32>>
 135   ! CHECK: fir.has_value %[[rebox]] : !fir.box<!fir.ptr<f32>>
 136 end subroutine
 137
 138 subroutine scalar_char_ref()
 139   character(20), save, target :: x(100)
 140   character(10), pointer :: p => x(6)(7:16)
 141 ! CHECK-LABEL: fir.global internal @_QFscalar_char_refEp : !fir.box<!fir.ptr<!fir.char<1,10>>>
 142   ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalar_char_refEx) : !fir.ref<!fir.array<100x!fir.char<1,20>>>
 143   ! CHECK: %[[idx:.*]] = arith.subi %c6{{.*}}, %c1{{.*}} : i64
 144   ! CHECK: %[[elt:.*]] = fir.coordinate_of %[[x]], %[[idx]] : (!fir.ref<!fir.array<100x!fir.char<1,20>>>, i64) -> !fir.ref<!fir.char<1,20>>
 145   ! CHECK: %[[eltCast:.*]] = fir.convert %[[elt:.*]] : (!fir.ref<!fir.char<1,20>>) -> !fir.ref<!fir.array<20x!fir.char<1>>>
 146   ! CHECK: %[[coor:.*]] = fir.coordinate_of %[[eltCast]], %{{.*}} : (!fir.ref<!fir.array<20x!fir.char<1>>>, index) -> !fir.ref<!fir.char<1>>
 147   ! CHECK: %[[substring:.*]] = fir.convert %[[coor]] : (!fir.ref<!fir.char<1>>) -> !fir.ref<!fir.char<1,?>>
 148   ! CHECK: %[[box:.*]] = fir.embox %[[substring]] typeparams %{{.*}}: (!fir.ref<!fir.char<1,?>>, index) -> !fir.box<!fir.char<1,?>>
 149   ! CHECK: %[[rebox:.*]] = fir.rebox %[[box]] : (!fir.box<!fir.char<1,?>>) -> !fir.box<!fir.ptr<!fir.char<1,10>>>
 150   ! CHECK: fir.has_value %[[rebox]] : !fir.box<!fir.ptr<!fir.char<1,10>>>
 151 end subroutine
 152
 153 ! -----------------------------------------------------------------------------
 154 !     Test array initial data target that are data references
 155 ! -----------------------------------------------------------------------------
 156
 157
 158 subroutine array_ref()
 159   real, save, target :: x(4:103, 5:104)
 160   real, pointer :: p(:) => x(10, 20:100:2)
 161 end subroutine
 162
 163 ! CHECK-LABEL: fir.global internal @_QFarray_refEp : !fir.box<!fir.ptr<!fir.array<?xf32>>> {
 164 ! CHECK:         %[[VAL_0:.*]] = fir.address_of(@_QFarray_refEx) : !fir.ref<!fir.array<100x100xf32>>
 165 ! CHECK:         %[[VAL_1:.*]] = arith.constant 4 : index
 166 ! CHECK:         %[[VAL_2:.*]] = arith.constant 100 : index
 167 ! CHECK:         %[[VAL_3:.*]] = arith.constant 5 : index
 168 ! CHECK:         %[[VAL_4:.*]] = arith.constant 100 : index
 169 ! CHECK:         %[[VAL_5:.*]] = arith.constant 1 : index
 170 ! CHECK:         %[[VAL_6:.*]] = arith.constant 1 : index
 171 ! CHECK:         %[[VAL_7:.*]] = arith.constant 10 : i64
 172 ! CHECK:         %[[VAL_8:.*]] = fir.undefined index
 173 ! CHECK:         %[[VAL_9:.*]] = fir.convert %[[VAL_7]] : (i64) -> index
 174 ! CHECK:         %[[VAL_10:.*]] = arith.subi %[[VAL_9]], %[[VAL_1]] : index
 175 ! CHECK:         %[[VAL_11:.*]] = arith.constant 20 : i64
 176 ! CHECK:         %[[VAL_12:.*]] = fir.convert %[[VAL_11]] : (i64) -> index
 177 ! CHECK:         %[[VAL_13:.*]] = arith.constant 2 : i64
 178 ! CHECK:         %[[VAL_14:.*]] = fir.convert %[[VAL_13]] : (i64) -> index
 179 ! CHECK:         %[[VAL_15:.*]] = arith.constant 100 : i64
 180 ! CHECK:         %[[VAL_16:.*]] = fir.convert %[[VAL_15]] : (i64) -> index
 181 ! CHECK:         %[[VAL_17:.*]] = arith.constant 0 : index
 182 ! CHECK:         %[[VAL_18:.*]] = arith.subi %[[VAL_16]], %[[VAL_12]] : index
 183 ! CHECK:         %[[VAL_19:.*]] = arith.addi %[[VAL_18]], %[[VAL_14]] : index
 184 ! CHECK:         %[[VAL_20:.*]] = arith.divsi %[[VAL_19]], %[[VAL_14]] : index
 185 ! CHECK:         %[[VAL_21:.*]] = arith.cmpi sgt, %[[VAL_20]], %[[VAL_17]] : index
 186 ! CHECK:         %[[VAL_22:.*]] = arith.select %[[VAL_21]], %[[VAL_20]], %[[VAL_17]] : index
 187 ! CHECK:         %[[VAL_23:.*]] = fir.shape_shift %[[VAL_1]], %[[VAL_2]], %[[VAL_3]], %[[VAL_4]] : (index, index, index, index) -> !fir.shapeshift<2>
 188 ! CHECK:         %[[VAL_24:.*]] = fir.slice %[[VAL_7]], %[[VAL_8]], %[[VAL_8]], %[[VAL_12]], %[[VAL_16]], %[[VAL_14]] : (i64, index, index, index, index, index) -> !fir.slice<2>
 189 ! CHECK:         %[[VAL_25:.*]] = fir.embox %[[VAL_0]](%[[VAL_23]]) {{\[}}%[[VAL_24]]] : (!fir.ref<!fir.array<100x100xf32>>, !fir.shapeshift<2>, !fir.slice<2>) -> !fir.box<!fir.array<41xf32>>
 190 ! CHECK:         %[[VAL_26:.*]] = fir.rebox %[[VAL_25]] : (!fir.box<!fir.array<41xf32>>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
 191 ! CHECK:         fir.has_value %[[VAL_26]] : !fir.box<!fir.ptr<!fir.array<?xf32>>>
 192 ! CHECK:       }