1! Test lowering of pointer disassociation
2! RUN: bbc -emit-fir %s -o - | FileCheck %s
3
4
5! -----------------------------------------------------------------------------
6!     Test p => NULL()
7! -----------------------------------------------------------------------------
8
9
10! CHECK-LABEL: func @_QPtest_scalar(
11! CHECK-SAME: %[[p:.*]]: !fir.ref<!fir.box<!fir.ptr<f32>>>{{.*}})
12subroutine test_scalar(p)
13  real, pointer :: p
14  ! CHECK: %[[null:.*]] = fir.zero_bits !fir.ptr<f32>
15  ! CHECK: %[[box:.*]] = fir.embox %[[null]] : (!fir.ptr<f32>) -> !fir.box<!fir.ptr<f32>>
16  ! CHECK: fir.store %[[box]] to %[[p]] : !fir.ref<!fir.box<!fir.ptr<f32>>>
17  p => NULL()
18end subroutine
19
20! CHECK-LABEL: func @_QPtest_scalar_char(
21! CHECK-SAME: %[[p:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>{{.*}})
22subroutine test_scalar_char(p)
23  character(:), pointer :: p
24  ! CHECK: %[[null:.*]] = fir.zero_bits !fir.ptr<!fir.char<1,?>>
25  ! CHECK: %[[box:.*]] = fir.embox %[[null]] typeparams %c0{{.*}} : (!fir.ptr<!fir.char<1,?>>, index) -> !fir.box<!fir.ptr<!fir.char<1,?>>>
26  ! CHECK: fir.store %[[box]] to %[[p]] : !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>
27  p => NULL()
28end subroutine
29
30! CHECK-LABEL: func @_QPtest_array(
31! CHECK-SAME: %[[p:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>{{.*}})
32subroutine test_array(p)
33  real, pointer :: p(:)
34  ! CHECK: %[[null:.*]] = fir.zero_bits !fir.ptr<!fir.array<?xf32>>
35  ! CHECK: %[[shape:.*]] = fir.shape %c0{{.*}}
36  ! CHECK: %[[box:.*]] = fir.embox %[[null]](%[[shape]]) : (!fir.ptr<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
37  ! CHECK: fir.store %[[box]] to %[[p]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
38  p => NULL()
39end subroutine
40
41! Test p(lb, ub) => NULL() which is none sens but is not illegal.
42! CHECK-LABEL: func @_QPtest_array_remap(
43! CHECK-SAME: %[[p:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>{{.*}})
44subroutine test_array_remap(p)
45  real, pointer :: p(:)
46  ! CHECK: %[[null:.*]] = fir.zero_bits !fir.ptr<!fir.array<?xf32>>
47  ! CHECK: %[[shape:.*]] = fir.shape %c0{{.*}}
48  ! CHECK: %[[box:.*]] = fir.embox %[[null]](%[[shape]]) : (!fir.ptr<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
49  ! CHECK: fir.store %[[box]] to %[[p]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
50  p(10:20) => NULL()
51end subroutine
52
53! -----------------------------------------------------------------------------
54!     Test p => NULL(MOLD)
55! -----------------------------------------------------------------------------
56
57! CHECK-LABEL: func @_QPtest_scalar_mold(
58! CHECK-SAME: %[[p:.*]]: !fir.ref<!fir.box<!fir.ptr<f32>>>{{[^,]*}},
59subroutine test_scalar_mold(p, x)
60  real, pointer :: p, x
61  ! CHECK: %[[VAL_0:.*]] = fir.alloca !fir.box<!fir.ptr<f32>>
62  ! CHECK: %[[VAL_1:.*]] = fir.zero_bits !fir.ptr<f32>
63  ! CHECK: %[[VAL_2:.*]] = fir.embox %[[VAL_1]] : (!fir.ptr<f32>) -> !fir.box<!fir.ptr<f32>>
64  ! CHECK: fir.store %[[VAL_2]] to %[[VAL_0]] : !fir.ref<!fir.box<!fir.ptr<f32>>>
65  ! CHECK: %[[VAL_3:.*]] = fir.load %[[VAL_0]] : !fir.ref<!fir.box<!fir.ptr<f32>>>
66  ! CHECK: %[[VAL_4:.*]] = fir.box_addr %[[VAL_3]] : (!fir.box<!fir.ptr<f32>>) -> !fir.ptr<f32>
67  ! CHECK: %[[VAL_5:.*]] = fir.embox %[[VAL_4]] : (!fir.ptr<f32>) -> !fir.box<!fir.ptr<f32>>
68  ! CHECK: fir.store %[[VAL_5]] to %[[p]] : !fir.ref<!fir.box<!fir.ptr<f32>>>
69  p => NULL(x)
70end subroutine
71
72! CHECK-LABEL: func @_QPtest_scalar_char_mold(
73! CHECK-SAME: %[[p:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>{{[^,]*}},
74subroutine test_scalar_char_mold(p, x)
75  character(:), pointer :: p, x
76  ! CHECK: %[[VAL_7:.*]] = fir.alloca !fir.box<!fir.ptr<!fir.char<1,?>>>
77  ! CHECK: %[[VAL_8:.*]] = fir.zero_bits !fir.ptr<!fir.char<1,?>>
78  ! CHECK: %[[VAL_9:.*]] = arith.constant 0 : index
79  ! CHECK: %[[VAL_10:.*]] = fir.embox %[[VAL_8]] typeparams %[[VAL_9]] : (!fir.ptr<!fir.char<1,?>>, index) -> !fir.box<!fir.ptr<!fir.char<1,?>>>
80  ! CHECK: fir.store %[[VAL_10]] to %[[VAL_7]] : !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>
81  ! CHECK: %[[VAL_11:.*]] = fir.load %[[VAL_7]] : !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>
82  ! CHECK: %[[VAL_12:.*]] = fir.box_elesize %[[VAL_11]] : (!fir.box<!fir.ptr<!fir.char<1,?>>>) -> index
83  ! CHECK: %[[VAL_13:.*]] = fir.box_addr %[[VAL_11]] : (!fir.box<!fir.ptr<!fir.char<1,?>>>) -> !fir.ptr<!fir.char<1,?>>
84  ! CHECK: %[[VAL_14:.*]] = fir.embox %[[VAL_13]] typeparams %[[VAL_12]] : (!fir.ptr<!fir.char<1,?>>, index) -> !fir.box<!fir.ptr<!fir.char<1,?>>>
85  ! CHECK: fir.store %[[VAL_14]] to %[[p]] : !fir.ref<!fir.box<!fir.ptr<!fir.char<1,?>>>>
86  p => NULL(x)
87end subroutine
88
89! CHECK-LABEL: func @_QPtest_array_mold(
90! CHECK-SAME: %[[p:.*]]: !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>{{[^,]*}},
91subroutine test_array_mold(p, x)
92  real, pointer :: p(:), x(:)
93  ! CHECK: %[[VAL_0:.*]] = fir.alloca !fir.box<!fir.ptr<!fir.array<?xf32>>>
94  ! CHECK: %[[VAL_1:.*]] = fir.zero_bits !fir.ptr<!fir.array<?xf32>>
95  ! CHECK: %[[VAL_2:.*]] = arith.constant 0 : index
96  ! CHECK: %[[VAL_3:.*]] = fir.shape %[[VAL_2]] : (index) -> !fir.shape<1>
97  ! CHECK: %[[VAL_4:.*]] = fir.embox %[[VAL_1]](%[[VAL_3]]) : (!fir.ptr<!fir.array<?xf32>>, !fir.shape<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
98  ! CHECK: fir.store %[[VAL_4]] to %[[VAL_0]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
99  ! CHECK: %[[VAL_5:.*]] = fir.load %[[VAL_0]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
100  ! CHECK: %[[VAL_6:.*]] = arith.constant 0 : index
101  ! CHECK: %[[VAL_7:.*]]:3 = fir.box_dims %[[VAL_5]], %[[VAL_6]] : (!fir.box<!fir.ptr<!fir.array<?xf32>>>, index) -> (index, index, index)
102  ! CHECK: %[[VAL_8:.*]] = fir.shift %[[VAL_7]]#0 : (index) -> !fir.shift<1>
103  ! CHECK: %[[VAL_9:.*]] = fir.rebox %[[VAL_5]](%[[VAL_8]]) : (!fir.box<!fir.ptr<!fir.array<?xf32>>>, !fir.shift<1>) -> !fir.box<!fir.ptr<!fir.array<?xf32>>>
104  ! CHECK: fir.store %[[VAL_9]] to %[[p]] : !fir.ref<!fir.box<!fir.ptr<!fir.array<?xf32>>>>
105  p => NULL(x)
106end subroutine
107