! Test default initialization of local and dummy variables (dynamic initialization)
! RUN: bbc -emit-fir -hlfir=false %s -o - | FileCheck %s
module test_dinit
type t
integer :: i = 42
end type
type t_alloc_comp
real, allocatable :: i(:)
end type
type tseq
sequence
integer :: i = 42
end type
contains
! -----------------------------------------------------------------------------
! Test default initialization of local and dummy variables.
! -----------------------------------------------------------------------------
! Test local scalar is default initialized
! CHECK-LABEL: func @_QMtest_dinitPlocal()
subroutine local
! CHECK: %[[x:.*]] = fir.alloca !fir.type<_QMtest_dinitTt{i:i32}>
! CHECK: %[[xbox:.*]] = fir.embox %[[x]] : (!fir.ref<!fir.type<_QMtest_dinitTt{i:i32}>>) -> !fir.box<!fir.type<_QMtest_dinitTt{i:i32}>>
! CHECK: %[[xboxNone:.*]] = fir.convert %[[xbox]]
! CHECK: fir.call @_FortranAInitialize(%[[xboxNone]], %{{.*}}, %{{.*}}) {{.*}}: (!fir.box<none>, !fir.ref<i8>, i32) -> none
type(t) :: x
print *, x%i
end subroutine
! Test local array is default initialized
! CHECK-LABEL: func @_QMtest_dinitPlocal_array()
subroutine local_array()
! CHECK: %[[x:.*]] = fir.alloca !fir.array<4x!fir.type<_QMtest_dinitTt{i:i32}>>
! CHECK: %[[xshape:.*]] = fir.shape %c4{{.*}} : (index) -> !fir.shape<1>
! CHECK: %[[xbox:.*]] = fir.embox %[[x]](%[[xshape]]) : (!fir.ref<!fir.array<4x!fir.type<_QMtest_dinitTt{i:i32}>>>, !fir.shape<1>) -> !fir.box<!fir.array<4x!fir.type<_QMtest_dinitTt{i:i32}>>>
! CHECK: %[[xboxNone:.*]] = fir.convert %[[xbox]]
! CHECK: fir.call @_FortranAInitialize(%[[xboxNone]], %{{.*}}, %{{.*}}) {{.*}}: (!fir.box<none>, !fir.ref<i8>, i32) -> none
type(t) :: x(4)
print *, x(2)%i
end subroutine
! Test allocatable component triggers default initialization of local
! scalars.
! CHECK-LABEL: func @_QMtest_dinitPlocal_alloc_comp()
subroutine local_alloc_comp
! CHECK: %[[x:.*]] = fir.alloca !fir.type<_QMtest_dinitTt_alloc_comp{i:!fir.box<!fir.heap<!fir.array<?xf32>>>}>
! CHECK: %[[xbox:.*]] = fir.embox %[[x]] : (!fir.ref<!fir.type<_QMtest_dinitTt_alloc_comp{i:!fir.box<!fir.heap<!fir.array<?xf32>>>}>>) -> !fir.box<!fir.type<_QMtest_dinitTt_alloc_comp{i:!fir.box<!fir.heap<!fir.array<?xf32>>>}>>
! CHECK: %[[xboxNone:.*]] = fir.convert %[[xbox]]
! CHECK: fir.call @_FortranAInitialize(%[[xboxNone]], %{{.*}}, %{{.*}}) {{.*}}: (!fir.box<none>, !fir.ref<i8>, i32) -> none
type(t_alloc_comp) :: x
end subroutine
! Test function results are default initialized.
! CHECK-LABEL: func @_QMtest_dinitPresult() -> !fir.type<_QMtest_dinitTt{i:i32}>
function result()
! CHECK: %[[x:.*]] = fir.alloca !fir.type<_QMtest_dinitTt{i:i32}>
! CHECK: %[[xbox:.*]] = fir.embox %[[x]] : (!fir.ref<!fir.type<_QMtest_dinitTt{i:i32}>>) -> !fir.box<!fir.type<_QMtest_dinitTt{i:i32}>>
! CHECK: %[[xboxNone:.*]] = fir.convert %[[xbox]]
! CHECK: fir.call @_FortranAInitialize(%[[xboxNone]], %{{.*}}, %{{.*}}) {{.*}}: (!fir.box<none>, !fir.ref<i8>, i32) -> none
type(t) :: result
end function
! Test intent(out) dummies are default initialized
! CHECK-LABEL: func @_QMtest_dinitPintent_out(
! CHECK-SAME: %[[x:.*]]: !fir.ref<!fir.type<_QMtest_dinitTt{i:i32}>>
subroutine intent_out(x)
! CHECK: %[[xbox:.*]] = fir.embox %[[x]] : (!fir.ref<!fir.type<_QMtest_dinitTt{i:i32}>>) -> !fir.box<!fir.type<_QMtest_dinitTt{i:i32}>>
! CHECK: %[[xboxNone:.*]] = fir.convert %[[xbox]]
! CHECK: fir.call @_FortranAInitialize(%[[xboxNone]], %{{.*}}, %{{.*}}) {{.*}}: (!fir.box<none>, !fir.ref<i8>, i32) -> none
type(t), intent(out) :: x
end subroutine
! Test that optional intent(out) are default initialized only when
! present.
! CHECK-LABEL: func @_QMtest_dinitPintent_out_optional(
! CHECK-SAME: %[[x:.*]]: !fir.ref<!fir.type<_QMtest_dinitTt{i:i32}>> {fir.bindc_name = "x", fir.optional})
subroutine intent_out_optional(x)
! CHECK: %[[isPresent:.*]] = fir.is_present %[[x]] : (!fir.ref<!fir.type<_QMtest_dinitTt{i:i32}>>) -> i1
! CHECK: fir.if %[[isPresent]] {
! CHECK: %[[xbox:.*]] = fir.embox %[[x]] : (!fir.ref<!fir.type<_QMtest_dinitTt{i:i32}>>) -> !fir.box<!fir.type<_QMtest_dinitTt{i:i32}>>
! CHECK: %[[xboxNone:.*]] = fir.convert %[[xbox]]
! CHECK: fir.call @_FortranAInitialize(%[[xboxNone]], %{{.*}}, %{{.*}}) {{.*}}: (!fir.box<none>, !fir.ref<i8>, i32) -> none
! CHECK: }
type(t), intent(out), optional :: x
end subroutine
! Test local equivalences where one entity has default initialization
! CHECK-LABEL: func @_QMtest_dinitPlocal_eq()
subroutine local_eq()
type(tseq) :: x
integer :: zi
! CHECK: %[[equiv:.*]] = fir.alloca !fir.array<4xi8>
! CHECK: %[[xcoor:.*]] = fir.coordinate_of %[[equiv]], %c0{{.*}} : (!fir.ref<!fir.array<4xi8>>, index) -> !fir.ref<i8>
! CHECK: %[[x:.*]] = fir.convert %[[xcoor]] : (!fir.ref<i8>) -> !fir.ptr<!fir.type<_QMtest_dinitTtseq{i:i32}>>
! CHECK: %[[xbox:.*]] = fir.embox %[[x]] : (!fir.ptr<!fir.type<_QMtest_dinitTtseq{i:i32}>>) -> !fir.box<!fir.type<_QMtest_dinitTtseq{i:i32}>>
! CHECK: %[[xboxNone:.*]] = fir.convert %[[xbox]]
! CHECK: fir.call @_FortranAInitialize(%[[xboxNone]], %{{.*}}, %{{.*}}) {{.*}}: (!fir.box<none>, !fir.ref<i8>, i32) -> none
equivalence (x, zi)
print *, i
end subroutine
! Test local equivalences with both equivalenced entities being
! default initialized. Note that the standard allow default initialization
! to be performed several times as long as the values are the same. So
! far that is what lowering is doing to stay simple.
! CHECK-LABEL: func @_QMtest_dinitPlocal_eq2()
subroutine local_eq2()
type(tseq) :: x
type(tseq) :: y
! CHECK: %[[equiv:.*]] = fir.alloca !fir.array<4xi8>
! CHECK: %[[xcoor:.*]] = fir.coordinate_of %[[equiv]], %c0{{.*}} : (!fir.ref<!fir.array<4xi8>>, index) -> !fir.ref<i8>
! CHECK: %[[x:.*]] = fir.convert %[[xcoor]] : (!fir.ref<i8>) -> !fir.ptr<!fir.type<_QMtest_dinitTtseq{i:i32}>>
! CHECK: %[[xbox:.*]] = fir.embox %[[x]] : (!fir.ptr<!fir.type<_QMtest_dinitTtseq{i:i32}>>) -> !fir.box<!fir.type<_QMtest_dinitTtseq{i:i32}>>
! CHECK: %[[xboxNone:.*]] = fir.convert %[[xbox]]
! CHECK: fir.call @_FortranAInitialize(%[[xboxNone]], %{{.*}}, %{{.*}}) {{.*}}: (!fir.box<none>, !fir.ref<i8>, i32) -> none
! CHECK: %[[ycoor:.*]] = fir.coordinate_of %[[equiv]], %c0{{.*}} : (!fir.ref<!fir.array<4xi8>>, index) -> !fir.ref<i8>
! CHECK: %[[y:.*]] = fir.convert %[[ycoor]] : (!fir.ref<i8>) -> !fir.ptr<!fir.type<_QMtest_dinitTtseq{i:i32}>>
! CHECK: %[[ybox:.*]] = fir.embox %[[y]] : (!fir.ptr<!fir.type<_QMtest_dinitTtseq{i:i32}>>) -> !fir.box<!fir.type<_QMtest_dinitTtseq{i:i32}>>
! CHECK: %[[yboxNone:.*]] = fir.convert %[[ybox]]
! CHECK: fir.call @_FortranAInitialize(%[[yboxNone]], %{{.*}}, %{{.*}}) {{.*}}: (!fir.box<none>, !fir.ref<i8>, i32) -> none
equivalence (x, y)
print *, y%i
end subroutine
! -----------------------------------------------------------------------------
! Test for local and dummy variables that must not be initialized
! -----------------------------------------------------------------------------
! CHECK-LABEL: func @_QMtest_dinitPnoinit_local_alloc
subroutine noinit_local_alloc
! CHECK-NOT: fir.call @_FortranAInitialize
type(t), allocatable :: x
! CHECK: return
end subroutine
! CHECK-LABEL: func @_QMtest_dinitPnoinit_local_pointer
subroutine noinit_local_pointer
! CHECK-NOT: fir.call @_FortranAInitialize
type(t), pointer :: x
! CHECK: return
end subroutine
! CHECK-LABEL: func @_QMtest_dinitPnoinit_normal_dummy
subroutine noinit_normal_dummy(x)
! CHECK-NOT: fir.call @_FortranAInitialize
type(t) :: x
! CHECK: return
end subroutine
! CHECK-LABEL: func @_QMtest_dinitPnoinit_intentinout_dummy
subroutine noinit_intentinout_dummy(x)
! CHECK-NOT: fir.call @_FortranAInitialize
type(t), intent(inout) :: x
! CHECK: return
end subroutine
subroutine test_pointer_intentout(a, b)
type(t), pointer, intent(out) :: a
class(t), pointer, intent(out) :: b
end subroutine
! CHECK-LABEL: func.func @_QMtest_dinitPtest_pointer_intentout(
! CHECK-NOT: fir.call @_FortranAInitialize
end module
! CHECK-LABEL: func.func @_QQmain
! End-to-end test for debug pruposes.
use test_dinit
type(t) :: at
call local()
call local_array()
at%i = 66
call intent_out(at)
print *, at%i
at%i = 66
call intent_out_optional(at)
print *, at%i
call intent_out_optional()
call local_eq()
call local_eq2()
end
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