+void default_layout_compound_type(ir_type *type)
+{
+ size_t i;
+ size_t n = get_compound_n_members(type);
+ int size = 0;
+ unsigned align_all = 1;
+ bool var_size = is_compound_variable_size(type);
+
+ for (i = 0; i < n; ++i) {
+ ir_entity *entity = get_compound_member(type, i);
+ ir_type *entity_type = get_entity_type(entity);
+ unsigned align;
+ unsigned misalign;
+ unsigned entity_size;
+
+ if (is_Method_type(entity_type))
+ continue;
+
+ if (i+1 < n || !var_size) {
+ assert(get_type_state(entity_type) == layout_fixed);
+ entity_size = get_type_size_bytes(entity_type);
+ } else {
+ entity_size = 0;
+ }
+
+ align = get_type_alignment_bytes(entity_type);
+ align_all = align > align_all ? align : align_all;
+ misalign = (align ? size % align : 0);
+ size += (misalign ? align - misalign : 0);
+
+ set_entity_offset(entity, size);
+ if (!is_Union_type(type)) {
+ size += entity_size;
+ }
+ }
+ if (align_all > 0 && size % align_all) {
+ size += align_all - (size % align_all);
+ }
+ if (align_all > get_type_alignment_bytes(type)) {
+ set_type_alignment_bytes(type, align_all);
+ }
+ set_type_size_bytes(type, size);
+ set_type_state(type, layout_fixed);
+}
+
+ir_entity *frame_alloc_area(ir_type *frame_type, int size, unsigned alignment,
+ int at_start)
+{
+ ir_entity *area;
+ ir_type *tp;
+ ident *name;
+ char buf[32];
+ int offset;
+ unsigned frame_size = get_type_size_bytes(frame_type);
+ unsigned frame_align = get_type_alignment_bytes(frame_type);
+ static unsigned area_cnt = 0;
+
+ assert(is_frame_type(frame_type));
+ assert(get_type_state(frame_type) == layout_fixed);
+ assert(get_type_alignment_bytes(frame_type) > 0);
+ set_type_state(frame_type, layout_undefined);
+
+ if (irp->byte_type == NULL)
+ irp->byte_type = new_type_primitive(mode_Bu);
+
+ snprintf(buf, sizeof(buf), "area%u", area_cnt++);
+ name = new_id_from_str(buf);
+
+ tp = new_type_array(1, irp->byte_type);
+ set_array_bounds_int(tp, 0, 0, size);
+ set_type_alignment_bytes(tp, alignment);
+ set_type_size_bytes(tp, size);
+
+ if (at_start) {
+ size_t i, n;
+ unsigned delta = (size + frame_align - 1) & ~(frame_align - 1);
+ /* fix all offsets so far */
+ for (i = 0, n = get_class_n_members(frame_type); i < n; ++i) {
+ ir_entity *ent = get_class_member(frame_type, i);
+
+ set_entity_offset(ent, get_entity_offset(ent) + delta);
+ }
+ /* calculate offset and new type size */
+ offset = 0;
+ frame_size += delta;
+ } else {
+ /* calculate offset and new type size */
+ offset = (frame_size + alignment - 1) & ~(alignment - 1);
+ frame_size = offset + size;
+ }
+
+ area = new_entity(frame_type, name, tp);
+ set_entity_offset(area, offset);
+ set_type_size_bytes(frame_type, frame_size);
+ if (alignment > frame_align) {
+ set_type_alignment_bytes(frame_type, alignment);
+ }
+
+ /* mark this entity as compiler generated */
+ set_entity_compiler_generated(area, 1);
+
+ set_type_state(frame_type, layout_fixed);
+ return area;