xref: /llvm-project/flang/test/Lower/host-associated-globals.f90 (revision 971237dab259bdaa619403fc6472bd1758d4dc18)
1! Test lowering of internal procedure host association for global variables
2! A tuple function argument should not be created for associated globals, and
3! instead globals should be instantiated with a fir.address_of inside the
4! contained procedures.
5! RUN: bbc -emit-fir -hlfir=false %s -o - | FileCheck %s
6
7module test_mod_used_in_host
8  integer :: i, j_in_equiv
9  integer :: not_in_equiv
10  equivalence (i,j_in_equiv)
11end module
12
13subroutine module_var()
14  use test_mod_used_in_host
15  call bar()
16contains
17 subroutine bar()
18    print *, j_in_equiv, not_in_equiv
19 end subroutine
20end subroutine
21! CHECK-LABEL: func.func private @_QFmodule_varPbar()
22! CHECK:  %[[VAL_0:.*]] = fir.address_of(@_QMtest_mod_used_in_hostEi) : !fir.ref<!fir.array<4xi8>>
23! CHECK:  %[[VAL_1:.*]] = arith.constant 0 : index
24! CHECK:  %[[VAL_2:.*]] = fir.coordinate_of %[[VAL_0]], %[[VAL_1]] : (!fir.ref<!fir.array<4xi8>>, index) -> !fir.ref<i8>
25! CHECK:  %[[VAL_3:.*]] = fir.convert %[[VAL_2]] : (!fir.ref<i8>) -> !fir.ptr<i32>
26! CHECK:  %[[VAL_4:.*]] = fir.address_of(@_QMtest_mod_used_in_hostEnot_in_equiv) : !fir.ref<i32>
27
28subroutine test_common()
29  integer :: i(2)
30  integer :: j_in_equiv
31  integer :: not_in_equiv
32  equivalence (i(2),j_in_equiv)
33  common /x/ i, not_in_equiv
34  call bar()
35contains
36 subroutine bar()
37    print *, j_in_equiv, not_in_equiv
38 end subroutine
39end subroutine
40! CHECK-LABEL: func.func private @_QFtest_commonPbar() attributes {fir.host_symbol = {{.*}}, llvm.linkage = #llvm.linkage<internal>} {
41! CHECK:  %[[VAL_0:.*]] = fir.address_of(@x_) : !fir.ref<!fir.array<12xi8>>
42! CHECK:  %[[VAL_1:.*]] = fir.convert %[[VAL_0]] : (!fir.ref<!fir.array<12xi8>>) -> !fir.ref<!fir.array<?xi8>>
43! CHECK:  %[[VAL_2:.*]] = arith.constant 4 : index
44! CHECK:  %[[VAL_3:.*]] = fir.coordinate_of %[[VAL_1]], %[[VAL_2]] : (!fir.ref<!fir.array<?xi8>>, index) -> !fir.ref<i8>
45! CHECK:  %[[VAL_4:.*]] = fir.convert %[[VAL_3]] : (!fir.ref<i8>) -> !fir.ptr<i32>
46! CHECK:  %[[VAL_5:.*]] = fir.convert %[[VAL_0]] : (!fir.ref<!fir.array<12xi8>>) -> !fir.ref<!fir.array<?xi8>>
47! CHECK:  %[[VAL_6:.*]] = arith.constant 8 : index
48! CHECK:  %[[VAL_7:.*]] = fir.coordinate_of %[[VAL_5]], %[[VAL_6]] : (!fir.ref<!fir.array<?xi8>>, index) -> !fir.ref<i8>
49! CHECK:  %[[VAL_8:.*]] = fir.convert %[[VAL_7]] : (!fir.ref<i8>) -> !fir.ref<i32>
50
51subroutine saved_equiv()
52  integer, save :: i(2)
53  integer, save :: j_in_equiv
54  integer, save :: not_in_equiv
55  equivalence (i(2),j_in_equiv)
56  call bar()
57contains
58 subroutine bar()
59    print *, j_in_equiv, not_in_equiv
60 end subroutine
61end subroutine
62! CHECK-LABEL: func.func private @_QFsaved_equivPbar() attributes {fir.host_symbol = {{.*}}, llvm.linkage = #llvm.linkage<internal>} {
63! CHECK:  %[[VAL_0:.*]] = fir.address_of(@_QFsaved_equivEi) : !fir.ref<!fir.array<8xi8>>
64! CHECK:  %[[VAL_1:.*]] = arith.constant 4 : index
65! CHECK:  %[[VAL_2:.*]] = fir.coordinate_of %[[VAL_0]], %[[VAL_1]] : (!fir.ref<!fir.array<8xi8>>, index) -> !fir.ref<i8>
66! CHECK:  %[[VAL_3:.*]] = fir.convert %[[VAL_2]] : (!fir.ref<i8>) -> !fir.ptr<i32>
67! CHECK:  %[[VAL_4:.*]] = fir.address_of(@_QFsaved_equivEnot_in_equiv) : !fir.ref<i32>
68
69subroutine mixed_capture()
70  integer, save :: saved_i
71  integer, save :: saved_j
72  equivalence (saved_i, saved_j)
73  integer :: i
74  integer :: j
75  equivalence (i,j)
76  call bar()
77contains
78 subroutine bar()
79    call test(saved_j, j)
80 end subroutine
81end subroutine
82! CHECK-LABEL: func.func private @_QFmixed_capturePbar(
83! CHECK-SAME:    %[[VAL_0:.*]]: !fir.ref<tuple<!fir.ref<i32>>> {fir.host_assoc}) attributes {fir.host_symbol = {{.*}}, llvm.linkage = #llvm.linkage<internal>} {
84! CHECK:  %[[VAL_1:.*]] = fir.address_of(@_QFmixed_captureEsaved_i) : !fir.ref<!fir.array<4xi8>>
85! CHECK:  %[[VAL_2:.*]] = arith.constant 0 : index
86! CHECK:  %[[VAL_3:.*]] = fir.coordinate_of %[[VAL_1]], %[[VAL_2]] : (!fir.ref<!fir.array<4xi8>>, index) -> !fir.ref<i8>
87! CHECK:  %[[VAL_4:.*]] = fir.convert %[[VAL_3]] : (!fir.ref<i8>) -> !fir.ptr<i32>
88! CHECK:  %[[VAL_5:.*]] = arith.constant 0 : i32
89! CHECK:  %[[VAL_6:.*]] = fir.coordinate_of %[[VAL_0]], %[[VAL_5]] : (!fir.ref<tuple<!fir.ref<i32>>>, i32) -> !fir.llvm_ptr<!fir.ref<i32>>
90! CHECK:  %[[VAL_7:.*]] = fir.load %[[VAL_6]] : !fir.llvm_ptr<!fir.ref<i32>>
91! CHECK:  %[[VAL_9:.*]] = fir.convert %[[VAL_4]] : (!fir.ptr<i32>) -> !fir.ref<i32>
92! CHECK:  fir.call @_QPtest(%[[VAL_9]], %[[VAL_7]]) {{.*}} : (!fir.ref<i32>, !fir.ref<i32>) -> ()
93