Magic-Mirror/llvm-capstone
1
0
Fork 0
mirror of https://github.com/capstone-engine/llvm-capstone.git synced 2024-11-23 22:00:10 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

[flang] Add runtime default initialization for polymorphic intent(out) dummy

Browse Source 
This patch adds runtime default initialization for polymorphic
dummy argument. The dynamic type might require default initialization
but not the declared type.

Reviewed By: jeanPerier, PeteSteinfeld

Differential Revision: https://reviews.llvm.org/D141278
This commit is contained in:
Valentin Clement 2023-01-09 17:53:16 +01:00
parent 747211b712
commit fdc3dd70c7
No known key found for this signature in database
GPG Key ID: 086D54783C928776
2 changed files with 24 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
flang/lib/Lower/ConvertVariable.cpp
View File

@ -625,6 +625,11 @@ mustBeDefaultInitializedAtRuntime(const Fortran::lower::pft::Variable &var) {
return false;
if (Fortran::semantics::IsDummy(sym) && !Fortran::semantics::IsIntentOut(sym))
return false;
// Polymorphic intent(out) dummy might need default initialization
// at runtime.
if (Fortran::semantics::IsPolymorphic(sym) &&
Fortran::semantics::IsDummy(sym) && Fortran::semantics::IsIntentOut(sym))
return true;
// Local variables (including function results), and intent(out) dummies must
// be default initialized at runtime if their type has default initialization.
return hasDefaultInitialization(sym);

20
flang/test/Lower/polymorphic.f90
View File

@ -23,7 +23,7 @@ module polymorphic_test
end type
type, extends(p1) :: p2
real :: c
real :: c = 10.5
end type
type r1
@ -738,6 +738,24 @@ module polymorphic_test
! CHECK: %[[RES:.*]] = fir.call @_QMpolymorphic_testPunlimited_polymorphic_alloc_array_ret() fastmath<contract> : () -> !fir.class<!fir.heap<!fir.array<?xnone>>>
! CHECK: fir.save_result %[[RES]] to %[[RES_TMP]] : !fir.class<!fir.heap<!fir.array<?xnone>>>, !fir.ref<!fir.class<!fir.heap<!fir.array<?xnone>>>>
subroutine test_unlimited_polymorphic_intentout(a)
class(*), intent(out) :: a
end subroutine
! CHECK-LABEL: func.func @_QMpolymorphic_testPtest_unlimited_polymorphic_intentout(
! CHECK-SAME: %[[ARG0:.*]]: !fir.class<none> {fir.bindc_name = "a"}) {
! CHECK: %[[BOX_NONE:.*]] = fir.convert %[[ARG0]] : (!fir.class<none>) -> !fir.box<none>
! CHECK: %{{.*}} = fir.call @_FortranAInitialize(%[[BOX_NONE]], %{{.*}}, %{{.*}}) {{.*}} : (!fir.box<none>, !fir.ref<i8>, i32) -> none
subroutine test_polymorphic_intentout(a)
class(p1), intent(out) :: a
end subroutine
! CHECK-LABEL: func.func @_QMpolymorphic_testPtest_polymorphic_intentout(
! CHECK-SAME: %[[ARG0:.*]]: !fir.class<!fir.type<_QMpolymorphic_testTp1{a:i32,b:i32}>> {fir.bindc_name = "a"}) {
! CHECK: %[[BOX_NONE:.*]] = fir.convert %[[ARG0]] : (!fir.class<!fir.type<_QMpolymorphic_testTp1{a:i32,b:i32}>>) -> !fir.box<none>
! CHECK: %{{.*}} = fir.call @_FortranAInitialize(%[[BOX_NONE]], %{{.*}}, %{{.*}}) {{.*}} : (!fir.box<none>, !fir.ref<i8>, i32) -> none
end module
program test