diff options
Diffstat (limited to 'gcc/go/gofrontend/gogo-tree.cc')
| -rw-r--r-- | gcc/go/gofrontend/gogo-tree.cc | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/gcc/go/gofrontend/gogo-tree.cc b/gcc/go/gofrontend/gogo-tree.cc index 0c5cb67..94d1c4d 100644 --- a/gcc/go/gofrontend/gogo-tree.cc +++ b/gcc/go/gofrontend/gogo-tree.cc @@ -1974,141 +1974,6 @@ Gogo::slice_constructor(tree slice_type_tree, tree values, tree count, return build_constructor(slice_type_tree, init); } -// Build a map descriptor for a map of type MAPTYPE. - -tree -Gogo::map_descriptor(Map_type* maptype) -{ - if (this->map_descriptors_ == NULL) - this->map_descriptors_ = new Map_descriptors(10); - - std::pair<const Map_type*, tree> val(maptype, NULL); - std::pair<Map_descriptors::iterator, bool> ins = - this->map_descriptors_->insert(val); - Map_descriptors::iterator p = ins.first; - if (!ins.second) - { - if (p->second == error_mark_node) - return error_mark_node; - go_assert(p->second != NULL_TREE && DECL_P(p->second)); - return build_fold_addr_expr(p->second); - } - - Type* keytype = maptype->key_type(); - Type* valtype = maptype->val_type(); - - std::string mangled_name = ("__go_map_" + maptype->mangled_name(this)); - - tree id = get_identifier_from_string(mangled_name); - - // Get the type of the map descriptor. This is __go_map_descriptor - // in libgo/map.h. - - tree struct_type = this->map_descriptor_type(); - - // The map entry type is a struct with three fields. This struct is - // specific to MAPTYPE. Build it. - - tree map_entry_type = make_node(RECORD_TYPE); - - Btype* bkey_type = keytype->get_backend(this); - Btype* bval_type = valtype->get_backend(this); - map_entry_type = Gogo::builtin_struct(NULL, "__map", map_entry_type, 3, - "__next", - build_pointer_type(map_entry_type), - "__key", - type_to_tree(bkey_type), - "__val", - type_to_tree(bval_type)); - if (map_entry_type == error_mark_node) - { - p->second = error_mark_node; - return error_mark_node; - } - - tree map_entry_key_field = DECL_CHAIN(TYPE_FIELDS(map_entry_type)); - go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(map_entry_key_field)), - "__key") == 0); - - tree map_entry_val_field = DECL_CHAIN(map_entry_key_field); - go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(map_entry_val_field)), - "__val") == 0); - - // Initialize the entries. - - tree map_descriptor_field = TYPE_FIELDS(struct_type); - go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(map_descriptor_field)), - "__map_descriptor") == 0); - tree entry_size_field = DECL_CHAIN(map_descriptor_field); - go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(entry_size_field)), - "__entry_size") == 0); - tree key_offset_field = DECL_CHAIN(entry_size_field); - go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(key_offset_field)), - "__key_offset") == 0); - tree val_offset_field = DECL_CHAIN(key_offset_field); - go_assert(strcmp(IDENTIFIER_POINTER(DECL_NAME(val_offset_field)), - "__val_offset") == 0); - - VEC(constructor_elt, gc)* descriptor = VEC_alloc(constructor_elt, gc, 6); - - constructor_elt* elt = VEC_quick_push(constructor_elt, descriptor, NULL); - elt->index = map_descriptor_field; - elt->value = maptype->type_descriptor_pointer(this, BUILTINS_LOCATION); - - elt = VEC_quick_push(constructor_elt, descriptor, NULL); - elt->index = entry_size_field; - elt->value = TYPE_SIZE_UNIT(map_entry_type); - - elt = VEC_quick_push(constructor_elt, descriptor, NULL); - elt->index = key_offset_field; - elt->value = byte_position(map_entry_key_field); - - elt = VEC_quick_push(constructor_elt, descriptor, NULL); - elt->index = val_offset_field; - elt->value = byte_position(map_entry_val_field); - - tree constructor = build_constructor(struct_type, descriptor); - - tree decl = build_decl(BUILTINS_LOCATION, VAR_DECL, id, struct_type); - TREE_STATIC(decl) = 1; - TREE_USED(decl) = 1; - TREE_READONLY(decl) = 1; - TREE_CONSTANT(decl) = 1; - DECL_INITIAL(decl) = constructor; - make_decl_one_only(decl, DECL_ASSEMBLER_NAME(decl)); - resolve_unique_section(decl, 1, 0); - - rest_of_decl_compilation(decl, 1, 0); - - go_preserve_from_gc(decl); - p->second = decl; - - return build_fold_addr_expr(decl); -} - -// Return a tree for the type of a map descriptor. This is struct -// __go_map_descriptor in libgo/runtime/map.h. This is the same for -// all map types. - -tree -Gogo::map_descriptor_type() -{ - static tree struct_type; - Type* tdt = Type::make_type_descriptor_type(); - tree dtype = type_to_tree(tdt->get_backend(this)); - dtype = build_qualified_type(dtype, TYPE_QUAL_CONST); - return Gogo::builtin_struct(&struct_type, "__go_map_descriptor", NULL_TREE, - 4, - "__map_descriptor", - build_pointer_type(dtype), - "__entry_size", - sizetype, - "__key_offset", - sizetype, - "__val_offset", - sizetype); -} - // Build an interface method table for a type: a list of function // pointers, one for each interface method. This is used for // interfaces. |