/*
* The 64-bit version of libgcc does not contain some builtin
* functions for 32-bit values (__<builtin>si2) anymore.
*/
static void widen_builtin(ir_node *node)
{
ir_type *mtp = get_Builtin_type(node);
ir_type *arg1 = get_method_param_type(mtp, 0);
// Nothing to do, if argument size is at least machine size.
if (get_type_size(arg1) >= ir_target_pointer_size())
return;
// Only touch builtins with no 32-bit version.
ir_builtin_kind kind = get_Builtin_kind(node);
if (kind != ir_bk_clz &&
kind != ir_bk_ctz &&
kind != ir_bk_ffs &&
kind != ir_bk_parity &&
kind != ir_bk_popcount) {
return;
}
ir_mode *target_mode = get_reference_offset_mode(mode_P);
dbg_info *dbgi = get_irn_dbg_info(node);
ir_node *block = get_nodes_block(node);
ir_node *op = get_irn_n(node, n_Builtin_max + 1);
ir_node *conv = new_rd_Conv(dbgi, block, op, target_mode);
set_irn_n(node, n_Builtin_max + 1, conv);
ir_type *new_arg1 = get_type_for_mode(target_mode);
ir_type *new_result = get_method_res_type(mtp, 0);
ir_type *new_type = new_type_method(1, 1, false, cc_cdecl_set, mtp_no_property);
set_method_param_type(new_type, 0, new_arg1);
set_method_res_type(new_type, 0, new_result);
set_Builtin_type(node, new_type);
}
static ir_tarval *fold_expression_to_address(expression_t const *const expr)
{
switch (expr->kind) {
case EXPR_SELECT: {
select_expression_t const *const sel = &expr->select;
type_t *const type = skip_typeref(sel->compound->base.type);
ir_tarval *const base_addr = is_type_pointer(type) ? fold_expression(sel->compound) : fold_expression_to_address(sel->compound);
ir_mode *const mode = get_tarval_mode(base_addr);
ir_mode *const mode_offset = get_reference_offset_mode(mode);
ir_tarval *const offset = new_tarval_from_long(sel->compound_entry->compound_member.offset, mode_offset);
return tarval_add(base_addr, offset);
}
case EXPR_ARRAY_ACCESS: {
ir_tarval *const base_addr = fold_expression_to_address(expr->array_access.array_ref);
ir_tarval *const idx = fold_expression(expr->array_access.index);
ir_mode *const mode = get_ir_mode_arithmetic(type_size_t);
ir_tarval *const idx_conv = tarval_convert_to(idx, mode);
type_t *const elem_type = skip_typeref(expr->array_access.array_ref->base.type);
ir_tarval *const elem_size = get_type_size_tarval(elem_type, mode);
return tarval_add(base_addr, tarval_mul(idx_conv, elem_size));
}
case EXPR_UNARY_DEREFERENCE:
return fold_expression(expr->unary.value);
default:
panic("unexpected expression kind");
}
}
ir_node *gcji_array_data_addr(ir_node *addr)
{
ir_mode *mode = get_irn_mode(addr);
ir_mode *mode_offset = get_reference_offset_mode(mode);
unsigned offset = array_header_size;
ir_node *offset_cnst = new_Const_long(mode_offset, offset);
return new_Add(addr, offset_cnst);
}
static ir_node *get_vtable_ref(ir_type *type)
{
ir_entity *cls_vtable = oo_get_class_vtable_entity(type);
if (cls_vtable == NULL)
return NULL;
ir_graph *ccode = get_const_code_irg();
ir_node *addr = new_r_Address(ccode, cls_vtable);
unsigned offset
= ddispatch_get_vptr_points_to_index() * get_mode_size_bytes(mode_reference);
ir_mode *offset_mode = get_reference_offset_mode(mode_reference);
ir_node *cnst = new_r_Const_long(ccode, offset_mode, offset);
ir_node *block = get_r_cur_block(ccode);
ir_node *add = new_r_Add(block, addr, cnst);
return add;
}
/**
* Turn a small CopyB node into a series of Load/Store nodes.
*/
static void lower_small_copyb_node(ir_node *irn)
{
ir_graph *irg = get_irn_irg(irn);
dbg_info *dbgi = get_irn_dbg_info(irn);
ir_node *block = get_nodes_block(irn);
ir_type *tp = get_CopyB_type(irn);
ir_node *addr_src = get_CopyB_src(irn);
ir_node *addr_dst = get_CopyB_dst(irn);
ir_node *mem = get_CopyB_mem(irn);
ir_mode *mode_ref = get_irn_mode(addr_src);
unsigned mode_bytes = allow_misalignments ? native_mode_bytes
: get_type_alignment(tp);
unsigned size = get_type_size(tp);
unsigned offset = 0;
bool is_volatile = get_CopyB_volatility(irn) == volatility_is_volatile;
ir_cons_flags flags = is_volatile ? cons_volatile : cons_none;
while (offset < size) {
ir_mode *mode = get_ir_mode(mode_bytes);
for (; offset + mode_bytes <= size; offset += mode_bytes) {
ir_mode *mode_ref_int = get_reference_offset_mode(mode_ref);
/* construct offset */
ir_node *addr_const = new_r_Const_long(irg, mode_ref_int, offset);
ir_node *add = new_r_Add(block, addr_src, addr_const);
ir_node *load = new_rd_Load(dbgi, block, mem, add, mode, tp, flags);
ir_node *load_res = new_r_Proj(load, mode, pn_Load_res);
ir_node *load_mem = new_r_Proj(load, mode_M, pn_Load_M);
ir_node *addr_const2 = new_r_Const_long(irg, mode_ref_int, offset);
ir_node *add2 = new_r_Add(block, addr_dst, addr_const2);
ir_node *store = new_rd_Store(dbgi, block, load_mem, add2, load_res, tp, flags);
ir_node *store_mem = new_r_Proj(store, mode_M, pn_Store_M);
mem = store_mem;
}
mode_bytes /= 2;
}
exchange(irn, mem);
}
void be_default_lower_va_arg(ir_node *const node, bool const compound_is_ptr,
unsigned const stack_param_align)
{
ir_node *block = get_nodes_block(node);
dbg_info *dbgi = get_irn_dbg_info(node);
ir_graph *irg = get_irn_irg(node);
ir_type *aptype = get_method_res_type(get_Builtin_type(node), 0);
ir_node *const ap = get_irn_n(node, 1);
ir_node *const node_mem = get_Builtin_mem(node);
ir_mode *apmode = get_type_mode(aptype);
ir_node *res;
ir_node *new_mem;
if (apmode) {
goto load;
} else if (compound_is_ptr) {
apmode = mode_P;
aptype = get_type_for_mode(apmode);
load:;
ir_node *const load = new_rd_Load(dbgi, block, node_mem, ap, apmode, aptype, cons_none);
res = new_r_Proj(load, apmode, pn_Load_res);
new_mem = new_r_Proj(load, mode_M,pn_Load_M);
} else {
/* aptype has no associated mode, so it is represented as a pointer. */
res = ap;
new_mem = node_mem;
}
unsigned const round_up = round_up2(get_type_size(aptype),
stack_param_align);
ir_mode *const offset_mode = get_reference_offset_mode(mode_P);
ir_node *const offset = new_r_Const_long(irg, offset_mode, round_up);
ir_node *const new_ap = new_rd_Add(dbgi, block, ap, offset);
ir_node *const in[] = { new_mem, res, new_ap };
turn_into_tuple(node, ARRAY_SIZE(in), in);
}
