xref: /llvm-project/flang/test/Lower/equivalence-1.f90 (revision f35f863a88f83332bef9605ef4cfe4f05c066efb)
1! RUN: bbc -hlfir=false -o - %s | FileCheck %s
2
3! CHECK-LABEL: func @_QPs1
4SUBROUTINE s1
5  INTEGER i
6  REAL r
7  ! CHECK: = fir.alloca !fir.array<4xi8> {uniq_name = "_QFs1Ei"}
8  EQUIVALENCE (r,i)
9  ! CHECK: %[[coor:.*]] = fir.coordinate_of %{{.*}}, %{{.*}} : (!fir.ref<!fir.array<4xi8>>, index) -> !fir.ref<i8>
10  ! CHECK: %[[iloc:.*]] = fir.convert %[[coor]] : (!fir.ref<i8>) -> !fir.ptr<i32>
11  ! CHECK-DAG: fir.store %{{.*}} to %[[iloc]] : !fir.ptr<i32>
12  i = 4
13  ! CHECK-DAG: %[[floc:.*]] = fir.convert %[[coor]] : (!fir.ref<i8>) -> !fir.ptr<f32>
14  ! CHECK: %[[ld:.*]] = fir.load %[[floc]] : !fir.ptr<f32>
15  PRINT *, r
16END SUBROUTINE s1
17
18! CHECK-LABEL: func @_QPs2
19SUBROUTINE s2
20  INTEGER i(10)
21  REAL r(10)
22  ! CHECK: %[[arr:.*]] = fir.alloca !fir.array<48xi8>
23  EQUIVALENCE (r(3),i(5))
24  ! CHECK: %[[iarr:.*]] = fir.convert %{{.*}} : (!fir.ref<i8>) -> !fir.ptr<!fir.array<10xi32>>
25  ! CHECK: %[[foff:.*]] = fir.coordinate_of %[[arr]], %{{.*}} : (!fir.ref<!fir.array<48xi8>>, index) -> !fir.ref<i8>
26  ! CHECK: %[[farr:.*]] = fir.convert %[[foff]] : (!fir.ref<i8>) -> !fir.ptr<!fir.array<10xf32>>
27  ! CHECK: %[[ia:.*]] = fir.coordinate_of %[[iarr]], %{{.*}} : (!fir.ptr<!fir.array<10xi32>>, i64) -> !fir.ref<i32>
28  ! CHECK: fir.store %{{.*}} to %[[ia]] : !fir.ref<i32>
29  i(5) = 18
30  ! CHECK: %[[fld:.*]] = fir.coordinate_of %[[farr]], %{{.*}} : (!fir.ptr<!fir.array<10xf32>>, i64) -> !fir.ref<f32>
31  ! CHECK: = fir.load %[[fld]] : !fir.ref<f32>
32  PRINT *, r(3)
33END SUBROUTINE s2
34
35! CHECK-LABEL: func @_QPs3
36SUBROUTINE s3
37  REAL r(10)
38  TYPE t
39    SEQUENCE
40    REAL r(10)
41  END TYPE t
42  TYPE(t) x
43  ! CHECK: %[[group:.*]] = fir.alloca !fir.array<40xi8>
44  EQUIVALENCE (r,x)
45  ! CHECK: %[[coor:.*]] = fir.coordinate_of %[[group]], %c0 : (!fir.ref<!fir.array<40xi8>>, index) -> !fir.ref<i8>
46  ! CHECK: %[[rloc:.*]] = fir.convert %[[coor]] : (!fir.ref<i8>) -> !fir.ptr<!fir.array<10xf32>>
47  ! CHECK: %[[xloc:.*]] = fir.convert %[[coor]] : (!fir.ref<i8>) -> !fir.ptr<!fir.type<_QFs3Tt{r:!fir.array<10xf32>}>>
48  ! CHECK: %[[fidx:.*]] = fir.field_index r, !fir.type<_QFs3Tt{r:!fir.array<10xf32>}>
49  ! CHECK: %[[xrloc:.*]] = fir.coordinate_of %[[xloc]], %[[fidx]] :
50  ! CHECK: %[[v1loc:.*]] = fir.coordinate_of %[[xrloc]], %c8_i64 : (!fir.ref<!fir.array<10xf32>>, i64) -> !fir.ref<f32>
51  ! CHECK: fir.store %{{.*}} to %[[v1loc]] : !fir.ref<f32>
52  x%r(9) = 9.0
53  ! CHECK: %[[v2loc:.*]] = fir.coordinate_of %[[rloc]], %c8_i64 : (!fir.ptr<!fir.array<10xf32>>, i64) -> !fir.ref<f32>
54  ! CHECK: %{{.*}} = fir.load %[[v2loc]] : !fir.ref<f32>
55  PRINT *, r(9)
56END SUBROUTINE s3
57
58! test that equivalence in main program containing arrays are placed in global memory.
59! CHECK: fir.global internal @_QFEa : !fir.array<400000000xi8>
60  integer :: a, b(100000000)
61  equivalence (a, b)
62  b(1) = 42
63  print *, a
64
65  CALL s1
66  CALL s2
67  CALL s3
68END
69