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author | Tobias Burnus <tobias@codesourcery.com> | 2022-03-18 17:40:22 +0100 |
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committer | Tobias Burnus <tobias@codesourcery.com> | 2022-03-18 17:40:22 +0100 |
commit | c133bdfa9e7d9225510d00dbb7270cc052e4e4ee (patch) | |
tree | e45f4581f7ffa858ba92ef0665555e3fc70f235f | |
parent | 7a42b1fa1a090ead96cc0f94a8060a9650c810d5 (diff) | |
download | gcc-c133bdfa9e7d9225510d00dbb7270cc052e4e4ee.zip gcc-c133bdfa9e7d9225510d00dbb7270cc052e4e4ee.tar.gz gcc-c133bdfa9e7d9225510d00dbb7270cc052e4e4ee.tar.bz2 |
Fortran/OpenMP: Fix privatization of associated names
gfc_omp_predetermined_sharing cases the associate-name pointer variable
to be OMP_CLAUSE_DEFAULT_FIRSTPRIVATE, which is fine. However, the associated
selector is shared. Thus, the target of associate-name pointer should not get
copied. (It was before but because of gfc_omp_privatize_by_reference returning
false, the selector was not only wrongly copied but this was also not done
properly.)
gcc/fortran/ChangeLog:
PR fortran/103039
* trans-openmp.cc (gfc_omp_clause_copy_ctor, gfc_omp_clause_dtor):
Only privatize pointer for associate names.
libgomp/ChangeLog:
PR fortran/103039
* testsuite/libgomp.fortran/associate4.f90: New test.
-rw-r--r-- | gcc/fortran/trans-openmp.cc | 10 | ||||
-rw-r--r-- | libgomp/testsuite/libgomp.fortran/associate4.f90 | 92 |
2 files changed, 102 insertions, 0 deletions
diff --git a/gcc/fortran/trans-openmp.cc b/gcc/fortran/trans-openmp.cc index fad76a4..101924f 100644 --- a/gcc/fortran/trans-openmp.cc +++ b/gcc/fortran/trans-openmp.cc @@ -808,6 +808,11 @@ gfc_omp_clause_copy_ctor (tree clause, tree dest, tree src) gcc_assert (OMP_CLAUSE_CODE (clause) == OMP_CLAUSE_FIRSTPRIVATE || OMP_CLAUSE_CODE (clause) == OMP_CLAUSE_LINEAR); + /* Privatize pointer, only; cf. gfc_omp_predetermined_sharing. */ + if (DECL_P (OMP_CLAUSE_DECL (clause)) + && GFC_DECL_ASSOCIATE_VAR_P (OMP_CLAUSE_DECL (clause))) + return build2 (MODIFY_EXPR, TREE_TYPE (dest), dest, src); + if (DECL_ARTIFICIAL (OMP_CLAUSE_DECL (clause)) && DECL_LANG_SPECIFIC (OMP_CLAUSE_DECL (clause)) && GFC_DECL_SAVED_DESCRIPTOR (OMP_CLAUSE_DECL (clause))) @@ -1321,6 +1326,11 @@ gfc_omp_clause_dtor (tree clause, tree decl) tree type = TREE_TYPE (decl), tem; tree decl_type = TREE_TYPE (OMP_CLAUSE_DECL (clause)); + /* Only pointer was privatized; cf. gfc_omp_clause_copy_ctor. */ + if (DECL_P (OMP_CLAUSE_DECL (clause)) + && GFC_DECL_ASSOCIATE_VAR_P (OMP_CLAUSE_DECL (clause))) + return NULL_TREE; + if (DECL_ARTIFICIAL (OMP_CLAUSE_DECL (clause)) && DECL_LANG_SPECIFIC (OMP_CLAUSE_DECL (clause)) && GFC_DECL_SAVED_DESCRIPTOR (OMP_CLAUSE_DECL (clause))) diff --git a/libgomp/testsuite/libgomp.fortran/associate4.f90 b/libgomp/testsuite/libgomp.fortran/associate4.f90 new file mode 100644 index 0000000..f0949b5 --- /dev/null +++ b/libgomp/testsuite/libgomp.fortran/associate4.f90 @@ -0,0 +1,92 @@ +! PR fortran/51722 + +module m +implicit none + +contains + +subroutine seltype + +type :: a + integer :: p = 2 +end type a + +type, extends(a) :: b + integer :: cnt = 0 +end type b + +integer :: k, s +class(a), pointer :: x + +allocate(a :: x) +s = 0 +select type (y => x) +class is (a) +!$omp parallel do default(shared) private(k) reduction(+:s) + do k = 1,10 + s = s + k*y%p + end do +!$omp end parallel do +end select + +if (s /= 110) error stop +deallocate(x) +allocate(b :: x) + +s = 0 +select type (y => x) +class is (b) +!$omp parallel do default(shared) private(k) reduction(+:s) + do k = 1,10 + s = s + k*y%p +!$omp atomic update + y%cnt = y%cnt + 2 + end do +!$omp end parallel do +if (s /= 110) error stop +if (y%p /= 2) error stop +if (y%cnt /= 10*2) error stop +end select + +deallocate(x) + +end subroutine seltype + +subroutine assoc + +type :: b + integer :: r = 3 +end type b + +type :: a + integer :: p = 2 + class(b), pointer :: u => null() +end type a + +integer :: k, s +class(a), pointer :: x + +s = 0 +allocate(a :: x) +allocate(b :: x%u) + +associate(f => x%u) +!$omp parallel do default(shared) private(k) reduction(+:s) + do k = 1,10 + s = s + k*f%r + end do +!$omp end parallel do +end associate + +deallocate(x%u) +deallocate(x) + +if (s /= 165) error stop +end subroutine assoc +end module m + +use m +implicit none (type, external) +call seltype +call assoc +end |