enum omp_clause_default_kind
gfc_omp_predetermined_sharing (tree decl)
{
if (DECL_ARTIFICIAL (decl) && ! GFC_DECL_RESULT (decl))
return OMP_CLAUSE_DEFAULT_SHARED;
/* Cray pointees shouldn't be listed in any clauses and should be
gimplified to dereference of the corresponding Cray pointer.
Make them all private, so that they are emitted in the debug
information. */
if (GFC_DECL_CRAY_POINTEE (decl))
return OMP_CLAUSE_DEFAULT_PRIVATE;
/* 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
gimplified to the COMMON or EQUIVALENCE decls. */
if (GFC_DECL_COMMON_OR_EQUIV (decl) && ! DECL_HAS_VALUE_EXPR_P (decl))
return OMP_CLAUSE_DEFAULT_SHARED;
if (GFC_DECL_RESULT (decl) && ! DECL_HAS_VALUE_EXPR_P (decl))
return OMP_CLAUSE_DEFAULT_SHARED;
return OMP_CLAUSE_DEFAULT_UNSPECIFIED;
}
bool
gfc_omp_disregard_value_expr (tree decl, bool shared)
{
if (GFC_DECL_COMMON_OR_EQUIV (decl)
&& DECL_HAS_VALUE_EXPR_P (decl))
{
tree value = DECL_VALUE_EXPR (decl);
if (TREE_CODE (value) == COMPONENT_REF
&& TREE_CODE (TREE_OPERAND (value, 0)) == VAR_DECL
&& GFC_DECL_COMMON_OR_EQUIV (TREE_OPERAND (value, 0)))
{
/* If variable in COMMON or EQUIVALENCE is privatized, return
true, as just that variable is supposed to be privatized,
not the whole COMMON or whole EQUIVALENCE.
For shared variables in COMMON or EQUIVALENCE, let them be
gimplified to DECL_VALUE_EXPR, so that for multiple shared vars
from the same COMMON or EQUIVALENCE just one sharing of the
whole COMMON or EQUIVALENCE is enough. */
return ! shared;
}
}
if (GFC_DECL_RESULT (decl) && DECL_HAS_VALUE_EXPR_P (decl))
return ! shared;
return false;
}
enum omp_clause_default_kind
gfc_omp_predetermined_sharing (tree decl)
{
if (DECL_ARTIFICIAL (decl) && ! GFC_DECL_RESULT (decl))
return OMP_CLAUSE_DEFAULT_SHARED;
/* Cray pointees shouldn't be listed in any clauses and should be
gimplified to dereference of the corresponding Cray pointer.
Make them all private, so that they are emitted in the debug
information. */
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
gimplified to the COMMON or EQUIVALENCE decls. */
if (GFC_DECL_COMMON_OR_EQUIV (decl) && ! DECL_HAS_VALUE_EXPR_P (decl))
return OMP_CLAUSE_DEFAULT_SHARED;
if (GFC_DECL_RESULT (decl) && ! DECL_HAS_VALUE_EXPR_P (decl))
return OMP_CLAUSE_DEFAULT_SHARED;
return OMP_CLAUSE_DEFAULT_UNSPECIFIED;
}
