diff options
Diffstat (limited to 'gcc/fortran/trans-array.cc')
| -rw-r--r-- | gcc/fortran/trans-array.cc | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/gcc/fortran/trans-array.cc b/gcc/fortran/trans-array.cc index 795ce14..514cb05 100644 --- a/gcc/fortran/trans-array.cc +++ b/gcc/fortran/trans-array.cc @@ -11125,6 +11125,52 @@ gfc_alloc_allocatable_for_assignment (gfc_loopinfo *loop, } +/* Initialize class descriptor's TKR infomation. */ + +void +gfc_trans_class_array (gfc_symbol * sym, gfc_wrapped_block * block) +{ + tree type, etype; + tree tmp; + tree descriptor; + stmtblock_t init; + locus loc; + int rank; + + /* Make sure the frontend gets these right. */ + gcc_assert (sym->ts.type == BT_CLASS && CLASS_DATA (sym) + && (CLASS_DATA (sym)->attr.class_pointer + || CLASS_DATA (sym)->attr.allocatable)); + + gcc_assert (VAR_P (sym->backend_decl) + || TREE_CODE (sym->backend_decl) == PARM_DECL); + + if (sym->attr.dummy) + return; + + descriptor = gfc_class_data_get (sym->backend_decl); + type = TREE_TYPE (descriptor); + + if (type == NULL || !GFC_DESCRIPTOR_TYPE_P (type)) + return; + + gfc_save_backend_locus (&loc); + gfc_set_backend_locus (&sym->declared_at); + gfc_init_block (&init); + + rank = CLASS_DATA (sym)->as ? (CLASS_DATA (sym)->as->rank) : (0); + gcc_assert (rank>=0); + tmp = gfc_conv_descriptor_dtype (descriptor); + etype = gfc_get_element_type (type); + tmp = fold_build2_loc (input_location, MODIFY_EXPR, TREE_TYPE (tmp), tmp, + gfc_get_dtype_rank_type (rank, etype)); + gfc_add_expr_to_block (&init, tmp); + + gfc_add_init_cleanup (block, gfc_finish_block (&init), NULL_TREE); + gfc_restore_backend_locus (&loc); +} + + /* NULLIFY an allocatable/pointer array on function entry, free it on exit. Do likewise, recursively if necessary, with the allocatable components of derived types. This function is also called for assumed-rank arrays, which |