* [gomp3] Assumed-size arrays are now predetermined to have actual argument's sharing
@ 2008-02-26 14:38 Jakub Jelinek
0 siblings, 0 replies; only message in thread
From: Jakub Jelinek @ 2008-02-26 14:38 UTC (permalink / raw)
To: gcc-patches; +Cc: fortran
Hi!
OpenMP 3.0 unlike 2.5 says that assumed-size arrays are predetermined
to share the sharing status with corresponding actual argument (which for
gcc is predetermined shared). Assumed-size arrays are still allowed
to be in shared() clauses, and keep being disallowed in private/firstprivate
etc.
Committed to gomp-3_0-branch.
2008-02-26 Jakub Jelinek <jakub@redhat.com>
* trans-openmp.c (gfc_omp_predetermined_sharing): Return
OMP_CLAUSE_DEFAULT_SHARED for assumed-size arrays.
* gfortran.dg/gomp/sharing-3.f90: New test.
--- gcc/fortran/trans-openmp.c (revision 132481)
+++ gcc/fortran/trans-openmp.c (working copy)
@@ -84,6 +84,17 @@ gfc_omp_predetermined_sharing (tree decl
if (GFC_DECL_CRAY_POINTEE (decl))
return OMP_CLAUSE_DEFAULT_PRIVATE;
+ /* Assumed-size arrays are predetermined to inherit sharing
+ attributes of the associated actual argument, which is shared
+ for all we care. */
+ if (TREE_CODE (decl) == PARM_DECL
+ && GFC_ARRAY_TYPE_P (TREE_TYPE (decl))
+ && GFC_TYPE_ARRAY_AKIND (TREE_TYPE (decl)) == GFC_ARRAY_UNKNOWN
+ && GFC_TYPE_ARRAY_UBOUND (TREE_TYPE (decl),
+ GFC_TYPE_ARRAY_RANK (TREE_TYPE (decl)) - 1)
+ == NULL)
+ return OMP_CLAUSE_DEFAULT_SHARED;
+
/* COMMON and EQUIVALENCE decls are shared. They
are only referenced through DECL_VALUE_EXPR of the variables
contained in them. If those are privatized, they will not be
--- gcc/testsuite/gfortran.dg/gomp/sharing-3.f90 (revision 0)
+++ gcc/testsuite/gfortran.dg/gomp/sharing-3.f90 (revision 0)
@@ -0,0 +1,37 @@
+! { dg-do compile }
+! { dg-options "-fopenmp" }
+
+subroutine foo (vara, varb, varc, vard, n)
+ integer :: n, vara(n), varb(*), varc(:), vard(6), vare(6)
+ vare(:) = 0
+ !$omp parallel default(none) shared(vara, varb, varc, vard, vare)
+ !$omp master
+ vara(1) = 1
+ varb(1) = 1
+ varc(1) = 1
+ vard(1) = 1
+ vare(1) = 1
+ !$omp end master
+ !$omp end parallel
+ !$omp parallel default(none) private(vara, varc, vard, vare)
+ vara(1) = 1
+ varc(1) = 1
+ vard(1) = 1
+ vare(1) = 1
+ !$omp end parallel
+ !$omp parallel default(none) firstprivate(vara, varc, vard, vare)
+ vara(1) = 1
+ varc(1) = 1
+ vard(1) = 1
+ vare(1) = 1
+ !$omp end parallel
+ !$omp parallel default(none) ! { dg-error "enclosing parallel" }
+ !$omp master
+ vara(1) = 1 ! { dg-error "not specified" }
+ varb(1) = 1 ! Assumed-size is predetermined
+ varc(1) = 1 ! { dg-error "not specified" "" { xfail *-*-* } }
+ vard(1) = 1 ! { dg-error "not specified" }
+ vare(1) = 1 ! { dg-error "not specified" }
+ !$omp end master
+ !$omp end parallel
+end subroutine foo
Jakub
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