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
8subroutine 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<!fir.ptr<f32>>
14    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<f32>>
15  end subroutine
16
17  subroutine scalar_char()
18    character(10), save, target :: x
19    character(:), pointer :: p => x
20  ! CHECK-LABEL: fir.global internal @_QFscalar_charEp : !fir.box<!fir.ptr<!fir.char<1,?>>>
21    ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalar_charEx) : !fir.ref<!fir.char<1,10>>
22    ! CHECK: %[[xCast:.*]] = fir.convert %[[x]] : (!fir.ref<!fir.char<1,10>>) -> !fir.ptr<!fir.char<1,?>>
23    ! CHECK: %[[box:.*]] = fir.embox %[[xCast]] typeparams %c10{{.*}} : (!fir.ptr<!fir.char<1,?>>, index) -> !fir.box<!fir.ptr<!fir.char<1,?>>>
24    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<!fir.char<1,?>>>
25  end subroutine
26
27  subroutine scalar_char_2()
28    character(10), save, target :: x
29    character(10), pointer :: p => x
30  ! CHECK-LABEL: fir.global internal @_QFscalar_char_2Ep : !fir.box<!fir.ptr<!fir.char<1,10>>>
31    ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalar_char_2Ex) : !fir.ref<!fir.char<1,10>>
32    ! CHECK: %[[box:.*]] = fir.embox %[[x]] : (!fir.ref<!fir.char<1,10>>) -> !fir.box<!fir.ptr<!fir.char<1,10>>>
33    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<!fir.char<1,10>>>
34  end subroutine
35
36  subroutine scalar_derived()
37    type t
38      real :: x
39      integer :: i
40    end type
41    type(t), save, target :: x
42    type(t), pointer :: p => x
43  ! CHECK-LABEL: fir.global internal @_QFscalar_derivedEp : !fir.box<!fir.ptr<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>>
44    ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalar_derivedEx) : !fir.ref<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>
45    ! CHECK: %[[box:.*]] = fir.embox %[[x]] : (!fir.ref<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>) -> !fir.box<!fir.ptr<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>>
46    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<!fir.type<_QFscalar_derivedTt{x:f32,i:i32}>>>
47  end subroutine
48
49  subroutine scalar_null()
50    real, pointer :: p => NULL()
51  ! CHECK-LABEL: fir.global internal @_QFscalar_nullEp : !fir.box<!fir.ptr<f32>>
52    ! CHECK: %[[zero:.*]] = fir.zero_bits !fir.ptr<f32>
53    ! CHECK: %[[box:.*]] = fir.embox %[[zero]] : (!fir.ptr<f32>) -> !fir.box<!fir.ptr<f32>>
54    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<f32>>
55  end subroutine
56
57  ! -----------------------------------------------------------------------------
58  !     Test array initial data target that are simple names
59  ! -----------------------------------------------------------------------------
60
61  subroutine array()
62    real, save, target :: x(100)
63    real, pointer :: p(:) => x
64  ! CHECK-LABEL: fir.global internal @_QFarrayEp : !fir.box<!fir.ptr<!fir.array<?xf32>>>
65    ! CHECK: %[[x:.*]] = fir.address_of(@_QFarrayEx) : !fir.ref<!fir.array<100xf32>>
66    ! CHECK: %[[shape:.*]] = fir.shape %c100{{.*}} : (index) -> !fir.shape<1>
67    ! CHECK: %[[box:.*]] = fir.embox %[[x]](%[[shape]]) : (!fir.ref<!fir.array<100xf32>>, !fir.shape<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
68    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<!fir.array<?xf32>>>
69  end subroutine
70
71  subroutine array_char()
72    character(10), save, target :: x(20)
73    character(:), pointer :: p(:) => x
74  ! CHECK-LABEL: fir.global internal @_QFarray_charEp : !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,?>>>>
75    ! CHECK: %[[x:.*]] = fir.address_of(@_QFarray_charEx) : !fir.ref<!fir.array<20x!fir.char<1,10>>>
76    ! CHECK: %[[shape:.*]] = fir.shape %c20{{.*}} : (index) -> !fir.shape<1>
77    ! CHECK: %[[xCast:.*]] = fir.convert %[[x]] : (!fir.ref<!fir.array<20x!fir.char<1,10>>>) -> !fir.ptr<!fir.array<?x!fir.char<1,?>>>
78    ! CHECK: %[[box:.*]] = fir.embox %[[xCast]](%[[shape]]) typeparams %c10{{.*}} : (!fir.ptr<!fir.array<?x!fir.char<1,?>>>, !fir.shape<1>, index) -> !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,?>>>>
79    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,?>>>>
80  end subroutine
81
82  subroutine array_char_2()
83    character(10), save, target :: x(20)
84    character(10), pointer :: p(:) => x
85  ! CHECK-LABEL: fir.global internal @_QFarray_char_2Ep : !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,10>>>>
86    ! CHECK: %[[x:.*]] = fir.address_of(@_QFarray_char_2Ex) : !fir.ref<!fir.array<20x!fir.char<1,10>>>
87    ! CHECK: %[[shape:.*]] = fir.shape %c20{{.*}} : (index) -> !fir.shape<1>
88    ! CHECK: %[[box:.*]] = fir.embox %[[x]](%[[shape]]) : (!fir.ref<!fir.array<20x!fir.char<1,10>>>, !fir.shape<1>) -> !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,10>>>>
89    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<!fir.array<?x!fir.char<1,10>>>>
90  end subroutine
91
92  subroutine array_derived()
93    type t
94      real :: x
95      integer :: i
96    end type
97    type(t), save, target :: x(100)
98    type(t), pointer :: p(:) => x
99  ! CHECK-LABEL: fir.global internal @_QFarray_derivedEp : !fir.box<!fir.ptr<!fir.array<?x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>>
100    ! CHECK: %[[x:.*]] = fir.address_of(@_QFarray_derivedEx) : !fir.ref<!fir.array<100x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>
101    ! CHECK: %[[shape:.*]] = fir.shape %c100{{.*}} : (index) -> !fir.shape<1>
102    ! 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.ptr<!fir.array<?x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>>
103    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<!fir.array<?x!fir.type<_QFarray_derivedTt{x:f32,i:i32}>>>>
104  end subroutine
105
106  subroutine array_null()
107    real, pointer :: p(:) => NULL()
108  ! CHECK-LABEL: fir.global internal @_QFarray_nullEp : !fir.box<!fir.ptr<!fir.array<?xf32>>>
109    ! CHECK: %[[zero:.*]] = fir.zero_bits !fir.ptr<!fir.array<?xf32>>
110    ! CHECK: %[[shape:.*]] = fir.shape %c0{{.*}} : (index) -> !fir.shape<1>
111    ! CHECK: %[[box:.*]] = fir.embox %[[zero]](%[[shape]]) : (!fir.ptr<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
112    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<!fir.array<?xf32>>>
113  end subroutine
114
115  ! -----------------------------------------------------------------------------
116  !     Test scalar initial data target that are data references
117  ! -----------------------------------------------------------------------------
118
119  subroutine scalar_ref()
120    real, save, target :: x(4:100)
121    real, pointer :: p => x(50)
122  ! CHECK-LABEL: fir.global internal @_QFscalar_refEp : !fir.box<!fir.ptr<f32>> {
123    ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalar_refEx) : !fir.ref<!fir.array<97xf32>>
124    ! CHECK: %[[lb:.*]] = fir.convert %c4 : (index) -> i64
125    ! CHECK: %[[idx:.*]] = arith.subi %c50{{.*}}, %[[lb]] : i64
126    ! CHECK: %[[elt:.*]] = fir.coordinate_of %[[x]], %[[idx]] : (!fir.ref<!fir.array<97xf32>>, i64) -> !fir.ref<f32>
127    ! CHECK: %[[box:.*]] = fir.embox %[[elt]] : (!fir.ref<f32>) -> !fir.box<!fir.ptr<f32>>
128    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<f32>>
129  end subroutine
130
131  subroutine scalar_char_ref()
132    character(20), save, target :: x(100)
133    character(10), pointer :: p => x(6)(7:16)
134  ! CHECK-LABEL: fir.global internal @_QFscalar_char_refEp : !fir.box<!fir.ptr<!fir.char<1,10>>>
135    ! CHECK: %[[x:.*]] = fir.address_of(@_QFscalar_char_refEx) : !fir.ref<!fir.array<100x!fir.char<1,20>>>
136    ! CHECK: %[[idx:.*]] = arith.subi %c6{{.*}}, %c1{{.*}} : i64
137    ! CHECK: %[[elt:.*]] = fir.coordinate_of %[[x]], %[[idx]] : (!fir.ref<!fir.array<100x!fir.char<1,20>>>, i64) -> !fir.ref<!fir.char<1,20>>
138    ! CHECK: %[[eltCast:.*]] = fir.convert %[[elt:.*]] : (!fir.ref<!fir.char<1,20>>) -> !fir.ref<!fir.array<20x!fir.char<1>>>
139    ! CHECK: %[[coor:.*]] = fir.coordinate_of %[[eltCast]], %{{.*}} : (!fir.ref<!fir.array<20x!fir.char<1>>>, index) -> !fir.ref<!fir.char<1>>
140    ! CHECK: %[[substring:.*]] = fir.convert %[[coor]] : (!fir.ref<!fir.char<1>>) -> !fir.ref<!fir.char<1,?>>
141    ! CHECK: %[[substringCast:.*]] = fir.convert %[[substring]] : (!fir.ref<!fir.char<1,?>>) -> !fir.ptr<!fir.char<1,10>>
142    ! CHECK: %[[box:.*]] = fir.embox %[[substringCast]] : (!fir.ptr<!fir.char<1,10>>) -> !fir.box<!fir.ptr<!fir.char<1,10>>>
143    ! CHECK: fir.has_value %[[box]] : !fir.box<!fir.ptr<!fir.char<1,10>>>
144  end subroutine
145
146  ! -----------------------------------------------------------------------------
147  !     Test array initial data target that are data references
148  ! -----------------------------------------------------------------------------
149
150
151  subroutine array_ref()
152    real, save, target :: x(4:103, 5:104)
153    real, pointer :: p(:) => x(10, 20:100:2)
154  end subroutine
155
156  ! CHECK-LABEL: fir.global internal @_QFarray_refEp : !fir.box<!fir.ptr<!fir.array<?xf32>>> {
157  ! CHECK:         %[[VAL_0:.*]] = fir.address_of(@_QFarray_refEx) : !fir.ref<!fir.array<100x100xf32>>
158  ! CHECK:         %[[VAL_1:.*]] = arith.constant 4 : index
159  ! CHECK:         %[[VAL_2:.*]] = arith.constant 100 : index
160  ! CHECK:         %[[VAL_3:.*]] = arith.constant 5 : index
161  ! CHECK:         %[[VAL_4:.*]] = arith.constant 100 : index
162  ! CHECK:         %[[VAL_5:.*]] = arith.constant 1 : index
163  ! CHECK:         %[[VAL_6:.*]] = arith.constant 1 : index
164  ! CHECK:         %[[VAL_7:.*]] = arith.constant 10 : i64
165  ! CHECK:         %[[VAL_8:.*]] = fir.undefined index
166  ! CHECK:         %[[VAL_9:.*]] = fir.convert %[[VAL_7]] : (i64) -> index
167  ! CHECK:         %[[VAL_10:.*]] = arith.subi %[[VAL_9]], %[[VAL_1]] : index
168  ! CHECK:         %[[VAL_11:.*]] = arith.constant 20 : i64
169  ! CHECK:         %[[VAL_12:.*]] = fir.convert %[[VAL_11]] : (i64) -> index
170  ! CHECK:         %[[VAL_13:.*]] = arith.constant 2 : i64
171  ! CHECK:         %[[VAL_14:.*]] = fir.convert %[[VAL_13]] : (i64) -> index
172  ! CHECK:         %[[VAL_15:.*]] = arith.constant 100 : i64
173  ! CHECK:         %[[VAL_16:.*]] = fir.convert %[[VAL_15]] : (i64) -> index
174  ! CHECK:         %[[VAL_17:.*]] = arith.constant 0 : index
175  ! CHECK:         %[[VAL_18:.*]] = arith.subi %[[VAL_16]], %[[VAL_12]] : index
176  ! CHECK:         %[[VAL_19:.*]] = arith.addi %[[VAL_18]], %[[VAL_14]] : index
177  ! CHECK:         %[[VAL_20:.*]] = arith.divsi %[[VAL_19]], %[[VAL_14]] : index
178  ! CHECK:         %[[VAL_21:.*]] = arith.cmpi sgt, %[[VAL_20]], %[[VAL_17]] : index
179  ! CHECK:         %[[VAL_22:.*]] = arith.select %[[VAL_21]], %[[VAL_20]], %[[VAL_17]] : index
180  ! CHECK:         %[[VAL_23:.*]] = fir.shape_shift %[[VAL_1]], %[[VAL_2]], %[[VAL_3]], %[[VAL_4]] : (index, index, index, index) -> !fir.shapeshift<2>
181  ! 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>
182  ! 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<?xf32>>
183  ! CHECK:         %[[VAL_26:.*]] = fir.embox %[[VAL_0]](%[[VAL_23]]) {{\[}}%[[VAL_24]]] : (!fir.ref<!fir.array<100x100xf32>>, !fir.shapeshift<2>, !fir.slice<2>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
184  ! CHECK:         fir.has_value %[[VAL_26]] : !fir.box<!fir.ptr<!fir.array<?xf32>>>
185  ! CHECK:       }
186