ir_node *get_atomic_ent_value(const ir_entity *entity)
{
ir_initializer_t *initializer = get_entity_initializer(entity);
assert(is_atomic_entity(entity));
if (initializer == NULL) {
ir_type *type = get_entity_type(entity);
return new_r_Unknown(get_const_code_irg(), get_type_mode(type));
}
switch (get_initializer_kind(initializer)) {
case IR_INITIALIZER_NULL: {
ir_type *type = get_entity_type(entity);
ir_mode *mode = get_type_mode(type);
return new_r_Const(get_const_code_irg(), get_mode_null(mode));
}
case IR_INITIALIZER_TARVAL: {
ir_tarval *tv = get_initializer_tarval_value(initializer);
return new_r_Const(get_const_code_irg(), tv);
}
case IR_INITIALIZER_CONST:
return get_initializer_const_value(initializer);
case IR_INITIALIZER_COMPOUND:
panic("compound initializer in atomic entity not allowed (%+F)", entity);
}
panic("invalid initializer kind (%+F)", entity);
}
static ir_type *lower_type_if_needed(ir_type *tp)
{
bool need_lower = false;
size_t const n_params = get_method_n_params(tp);
for (size_t p = 0; p < n_params; ++p) {
ir_type *ptp = get_method_param_type(tp, p);
ir_mode *pmode = get_type_mode(ptp);
if (pmode && mode_is_float(pmode)) {
need_lower = true;
break;
}
}
size_t const n_res = get_method_n_ress(tp);
for (size_t i = 0; i < n_res; ++i) {
ir_type *rtp = get_method_res_type(tp, i);
ir_mode *rmode = get_type_mode(rtp);
if (rmode && mode_is_float(rmode)) {
need_lower = true;
break;
}
}
if (need_lower) {
return lower_method_type(tp);
} else {
return tp;
}
}
void set_atomic_ent_value(ir_entity *entity, ir_node *val)
{
assert(is_atomic_entity(entity));
assert(is_Dummy(val) || get_irn_mode(val) == get_type_mode(entity->type));
ir_initializer_t *initializer = create_initializer_const(val);
entity->initializer = initializer;
}
static void replace_with_call(ir_node *node)
{
widen_builtin(node);
ir_type *const mtp = get_Builtin_type(node);
ir_builtin_kind const kind = get_Builtin_kind(node);
char const *const name = get_builtin_name(kind);
ir_type *const arg1 = get_method_param_type(mtp, 0);
char const *const machmode = get_gcc_machmode(arg1);
ident *const id = new_id_fmt("__%s%s2", name, machmode);
ir_entity *const entity
= create_compilerlib_entity(get_id_str(id), mtp);
dbg_info *const dbgi = get_irn_dbg_info(node);
ir_node *const block = get_nodes_block(node);
ir_node *const mem = get_Builtin_mem(node);
ir_graph *const irg = get_irn_irg(node);
ir_node *const callee = new_r_Address(irg, entity);
int const n_params = get_Builtin_n_params(node);
ir_node **const params = get_Builtin_param_arr(node);
ir_node *const call = new_rd_Call(dbgi, block, mem, callee, n_params, params, mtp);
ir_node *const call_mem = new_r_Proj(call, mode_M, pn_Call_M);
ir_node *const call_ress = new_r_Proj(call, mode_T, pn_Call_T_result);
ir_type *const res_type = get_method_res_type(mtp, 0);
ir_mode *const res_mode = get_type_mode(res_type);
ir_node *const call_res = new_r_Proj(call_ress, res_mode, 0);
ir_node *const in[] = {
[pn_Builtin_M] = call_mem,
[pn_Builtin_max + 1] = call_res,
};
static bool check_type_mode(const ir_type *tp)
{
bool fine = true;
if (get_type_mode(tp) == NULL) {
report_error("type %+F has no mode", tp);
fine = false;
}
return fine;
}
/**
* @return The lowered method type.
*/
static ir_type *lower_method_type(ir_type *mtp)
{
ir_type *res = pmap_get(ir_type, lowered_type, mtp);
if (res != NULL)
return res;
size_t const n_param = get_method_n_params(mtp);
size_t const n_res = get_method_n_ress(mtp);
bool const is_variadic = is_method_variadic(mtp);
res = new_type_method(n_param, n_res, is_variadic);
/* set param types and result types */
for (size_t i = 0; i < n_param; ++i) {
ir_type *ptp = get_method_param_type(mtp, i);
ir_mode *pmode = get_type_mode(ptp);
if (pmode != NULL && mode_is_float(pmode)) {
ptp = lower_type(ptp);
}
set_method_param_type(res, i, ptp);
}
for (size_t i = 0; i < n_res; ++i) {
ir_type *rtp = get_method_res_type(mtp, i);
ir_mode *rmode = get_type_mode(rtp);
if (rmode != NULL && mode_is_float(rmode)) {
rtp = lower_type(rtp);
}
set_method_res_type(res, i, rtp);
}
copy_method_properties(res, mtp);
set_higher_type(res, mtp);
pmap_insert(lowered_type, mtp, res);
return res;
}
static ir_node *make_softfloat_call(ir_node *const n, char const *const name,
size_t const arity,
ir_node *const *const in)
{
dbg_info *const dbgi = get_irn_dbg_info(n);
ir_node *const block = get_nodes_block(n);
ir_graph *const irg = get_irn_irg(n);
ir_node *const nomem = get_irg_no_mem(irg);
ir_node *const callee = create_softfloat_address(n, name);
ir_type *const type = get_softfloat_type(n);
ir_mode *const res_mode = get_type_mode(get_method_res_type(type, 0));
ir_node *const call = new_rd_Call(dbgi, block, nomem, callee, arity,
in, type);
ir_node *const results = new_r_Proj(call, mode_T, pn_Call_T_result);
ir_node *const result = new_r_Proj(results, res_mode, 0);
return result;
}
void init_constfold(void)
{
tarval_set_wrap_on_overflow(true);
const backend_params *be_params = be_get_backend_param();
/* initialize modes for arithmetic types */
memset(atomic_modes, 0, sizeof(atomic_modes));
const ir_type *const type_ld = be_params->type_long_double;
if (type_ld != NULL)
atomic_modes[ATOMIC_TYPE_LONG_DOUBLE] = get_type_mode(type_ld);
mode_float_arithmetic = be_params->mode_float_arithmetic;
for (int i = 0; i <= ATOMIC_TYPE_LAST; ++i) {
if (atomic_modes[i] != NULL)
continue;
atomic_modes[i] = init_atomic_ir_mode((atomic_type_kind_t) i);
}
}
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);
}
/**
* @return An Address representing the function that replaces the given node.
*/
static ir_node *create_softfloat_address(const ir_node *n, const char *name)
{
ir_type *const method = get_softfloat_type(n);
/* Parameter types. */
char const *first_param = "";
char const *second_param = "";
unsigned float_types = 0;
unsigned double_types = 0;
switch (get_method_n_params(method)) {
case 2: {
ir_type *const param_type = get_method_param_type(method, 1);
ir_mode *const mode = get_type_mode(param_type);
if (mode == mode_F) {
second_param = "sf";
float_types++;
} else if (mode == mode_D) {
second_param = "df";
double_types++;
} else if (mode == mode_Iu || mode == mode_Is) {
second_param = "si";
} else if (mode == mode_Lu || mode == mode_Ls) {
second_param = "di";
}
}
/* FALLTHROUGH */
case 1: {
ir_type *const param_type = get_method_param_type(method, 0);
ir_mode *const mode = get_type_mode(param_type);
if (mode == mode_F) {
first_param = float_types > 0 ? "" : "sf";
float_types++;
} else if (mode == mode_D) {
first_param = double_types > 0 ? "" : "df";
double_types++;
} else if (mode == mode_Iu || mode == mode_Is) {
first_param = "si";
} else if (mode == mode_Lu || mode == mode_Ls) {
first_param = "di";
}
break;
}
default:
break;
}
/* Result type. */
char const *result = "";
ir_mode *const mode = is_Div(n) ? get_Div_resmode(n) : get_irn_mode(n);
if (mode == mode_F) {
result = float_types > 0 ? "" : "sf";
float_types++;
} else if (mode == mode_D) {
result = double_types > 0 ? "" : "df";
double_types++;
} else if (mode == mode_Iu || mode == mode_Hu || mode == mode_Bu ||
mode == mode_Is || mode == mode_Hs || mode == mode_Bs)
result = "si";
else if (mode == mode_Lu || mode == mode_Ls)
result = "di";
assert(float_types <= 3);
assert(double_types <= 3);
ident *const id = float_types + double_types > 1 ?
new_id_fmt("__%s%s%s%s%u", name, first_param, second_param, result, float_types + double_types) :
new_id_fmt("__%s%s%s%s", name, first_param, second_param, result);
ir_graph *const irg = get_irn_irg(n);
ir_entity *const ent = create_compilerlib_entity(id, method);
return new_r_Address(irg, ent);
}
x86_cconv_t *ia32_decide_calling_convention(ir_type *function_type,
ir_graph *irg)
{
bool omit_fp = false;
if (irg != NULL) {
omit_fp = be_options.omit_fp;
if (omit_fp)
irg_walk_graph(irg, check_omit_fp, NULL, &omit_fp);
}
mtp_additional_properties mtp
= get_method_additional_properties(function_type);
(void)mtp;
/* TODO: do something with cc_reg_param/cc_this_call */
unsigned *caller_saves = rbitset_malloc(N_IA32_REGISTERS);
unsigned *callee_saves = rbitset_malloc(N_IA32_REGISTERS);
rbitset_copy(caller_saves, default_caller_saves, N_IA32_REGISTERS);
rbitset_copy(callee_saves, default_callee_saves, N_IA32_REGISTERS);
/* determine how parameters are passed */
unsigned n_params = get_method_n_params(function_type);
unsigned param_regnum = 0;
unsigned float_param_regnum = 0;
reg_or_stackslot_t *params = XMALLOCNZ(reg_or_stackslot_t,
n_params);
unsigned n_param_regs = ARRAY_SIZE(default_param_regs);
unsigned n_float_param_regs = ARRAY_SIZE(float_param_regs);
unsigned stack_offset = 0;
for (unsigned i = 0; i < n_params; ++i) {
ir_type *param_type = get_method_param_type(function_type, i);
reg_or_stackslot_t *param = ¶ms[i];
if (is_aggregate_type(param_type)) {
param->type = param_type;
param->offset = stack_offset;
stack_offset += get_type_size_bytes(param_type);
goto align_stack;
}
ir_mode *mode = get_type_mode(param_type);
if (mode_is_float(mode) && float_param_regnum < n_float_param_regs) {
param->reg = float_param_regs[float_param_regnum++];
} else if (!mode_is_float(mode) && param_regnum < n_param_regs) {
param->reg = default_param_regs[param_regnum++];
} else {
param->type = param_type;
param->offset = stack_offset;
stack_offset += get_type_size_bytes(param_type);
align_stack:;
/* increase offset by at least IA32_REGISTER_SIZE bytes so
* everything is aligned */
unsigned misalign = stack_offset % IA32_REGISTER_SIZE;
if (misalign > 0)
stack_offset += IA32_REGISTER_SIZE - misalign;
}
}
unsigned n_param_regs_used = param_regnum + float_param_regnum;
/* determine how results are passed */
unsigned n_results = get_method_n_ress(function_type);
unsigned n_reg_results = 0;
reg_or_stackslot_t *results = XMALLOCNZ(reg_or_stackslot_t, n_results);
unsigned res_regnum = 0;
unsigned res_float_regnum = 0;
unsigned n_result_regs = ARRAY_SIZE(result_regs);
unsigned n_float_result_regs = ARRAY_SIZE(float_result_regs);
for (size_t i = 0; i < n_results; ++i) {
ir_type *result_type = get_method_res_type(function_type, i);
ir_mode *result_mode = get_type_mode(result_type);
reg_or_stackslot_t *result = &results[i];
const arch_register_t *reg;
if (mode_is_float(result_mode)) {
if (res_float_regnum >= n_float_result_regs) {
panic("too many floating points results");
}
reg = float_result_regs[res_float_regnum++];
} else {
if (res_regnum >= n_result_regs) {
panic("too many results");
}
reg = result_regs[res_regnum++];
}
result->reg = reg;
rbitset_clear(caller_saves, reg->global_index);
++n_reg_results;
}
calling_convention cc = get_method_calling_convention(function_type);
x86_cconv_t *cconv = XMALLOCZ(x86_cconv_t);
cconv->sp_delta = (cc & cc_compound_ret) && !(cc & cc_reg_param)
? IA32_REGISTER_SIZE : 0;
cconv->parameters = params;
cconv->n_parameters = n_params;
cconv->callframe_size = stack_offset;
cconv->n_param_regs = n_param_regs_used;
cconv->n_xmm_regs = float_param_regnum;
cconv->results = results;
cconv->omit_fp = omit_fp;
cconv->caller_saves = caller_saves;
cconv->callee_saves = callee_saves;
cconv->n_reg_results = n_reg_results;
if (irg != NULL) {
be_irg_t *birg = be_birg_from_irg(irg);
size_t n_ignores = ARRAY_SIZE(ignore_regs);
struct obstack *obst = &birg->obst;
birg->allocatable_regs = rbitset_obstack_alloc(obst, N_IA32_REGISTERS);
rbitset_set_all(birg->allocatable_regs, N_IA32_REGISTERS);
for (size_t r = 0; r < n_ignores; ++r) {
rbitset_clear(birg->allocatable_regs, ignore_regs[r]);
}
if (!omit_fp)
rbitset_clear(birg->allocatable_regs, REG_EBP);
}
return cconv;
}
static bool check_initializer(const ir_initializer_t *initializer,
const ir_type *type,
const ir_entity *context)
{
bool fine = true;
switch (get_initializer_kind(initializer)) {
case IR_INITIALIZER_NULL:
return fine;
case IR_INITIALIZER_TARVAL: {
ir_tarval *tv = get_initializer_tarval_value(initializer);
if (get_type_mode(type) != get_tarval_mode(tv)) {
report_error("tarval initializer for entity %+F has wrong mode: %+F vs %+F", context, get_type_mode(type), get_tarval_mode(tv));
fine = false;
}
return fine;
}
case IR_INITIALIZER_CONST: {
ir_node *value = get_initializer_const_value(initializer);
if (get_type_mode(type) != get_irn_mode(value)) {
report_error("const initializer for entity %+F has wrong mode: %+F vs %+F", context, get_type_mode(type), get_irn_mode(value));
fine = false;
}
if (!constant_on_correct_irg(value)) {
report_error("initializer const value %+F for entity %+F not on const-code irg", value, context);
fine = false;
}
return fine;
}
case IR_INITIALIZER_COMPOUND: {
size_t n_entries = get_initializer_compound_n_entries(initializer);
if (is_Array_type(type)) {
ir_type *element_type = get_array_element_type(type);
/* TODO: check array bounds? */
for (size_t i = 0; i < n_entries; ++i) {
const ir_initializer_t *sub_initializer
= get_initializer_compound_value(initializer, i);
check_initializer(sub_initializer, element_type, context);
}
} else if (is_compound_type(type)) {
size_t n_members = get_compound_n_members(type);
if (n_entries > n_members) {
report_error("too many values in compound initializer of %+F",
context);
fine = false;
}
for (size_t i = 0; i < n_entries; ++i) {
if (i >= n_members)
break;
ir_entity *member = get_compound_member(type, i);
ir_type *member_type = get_entity_type(member);
const ir_initializer_t *sub_initializer
= get_initializer_compound_value(initializer, i);
check_initializer(sub_initializer, member_type, context);
}
} else {
report_error("compound initiailizer for non-array/compound type in entity %+F",
context);
fine = false;
}
return fine;
}
}
report_error("invalid initializer for entity %+F", context);
return false;
}
calling_convention_t *arm_decide_calling_convention(const ir_graph *irg,
ir_type *function_type)
{
/* determine how parameters are passed */
unsigned stack_offset = 0;
size_t const n_param_regs = ARRAY_SIZE(param_regs);
size_t const n_params = get_method_n_params(function_type);
size_t regnum = 0;
reg_or_stackslot_t *params = XMALLOCNZ(reg_or_stackslot_t, n_params);
for (size_t i = 0; i < n_params; ++i) {
ir_type *param_type = get_method_param_type(function_type,i);
ir_mode *mode = get_type_mode(param_type);
int bits = get_mode_size_bits(mode);
reg_or_stackslot_t *param = ¶ms[i];
param->type = param_type;
/* doubleword modes need to be passed in even registers */
if (param_type->flags & tf_lowered_dw) {
if (regnum < n_param_regs) {
if ((regnum & 1) != 0)
++regnum;
} else {
unsigned misalign = stack_offset % 8;
if (misalign > 0)
stack_offset += 8 - misalign;
}
}
if (regnum < n_param_regs) {
param->reg0 = param_regs[regnum++];
} else {
param->offset = stack_offset;
/* increase offset 4 bytes so everything is aligned */
stack_offset += MAX(bits / 8, 4);
continue;
}
/* we might need a 2nd 32bit component (for 64bit or double values) */
if (bits > 32) {
if (bits > 64)
panic("only 32 and 64bit modes supported");
if (regnum < n_param_regs) {
const arch_register_t *reg = param_regs[regnum++];
param->reg1 = reg;
} else {
ir_mode *pmode = param_regs[0]->cls->mode;
ir_type *type = get_type_for_mode(pmode);
param->type = type;
param->offset = stack_offset;
assert(get_mode_size_bits(pmode) == 32);
stack_offset += 4;
}
}
}
unsigned const n_param_regs_used = regnum;
size_t const n_result_regs= ARRAY_SIZE(result_regs);
size_t const n_float_result_regs = ARRAY_SIZE(float_result_regs);
size_t n_results = get_method_n_ress(function_type);
size_t float_regnum = 0;
reg_or_stackslot_t *results = XMALLOCNZ(reg_or_stackslot_t, n_results);
regnum = 0;
for (size_t i = 0; i < n_results; ++i) {
ir_type *result_type = get_method_res_type(function_type, i);
ir_mode *result_mode = get_type_mode(result_type);
reg_or_stackslot_t *result = &results[i];
if (mode_is_float(result_mode)) {
if (float_regnum >= n_float_result_regs) {
panic("too many float results");
} else {
const arch_register_t *reg = float_result_regs[float_regnum++];
result->reg0 = reg;
}
} else {
if (get_mode_size_bits(result_mode) > 32) {
panic("results with more than 32bits not supported yet");
}
if (regnum >= n_result_regs) {
panic("too many results");
} else {
const arch_register_t *reg = result_regs[regnum++];
result->reg0 = reg;
}
}
}
calling_convention_t *cconv = XMALLOCZ(calling_convention_t);
cconv->parameters = params;
cconv->n_parameters = n_params;
cconv->param_stack_size = stack_offset;
cconv->n_param_regs = n_param_regs_used;
cconv->results = results;
/* setup allocatable registers */
if (irg != NULL) {
be_irg_t *birg = be_birg_from_irg(irg);
assert(birg->allocatable_regs == NULL);
birg->allocatable_regs = be_cconv_alloc_all_regs(&birg->obst, N_ARM_REGISTERS);
be_cconv_rem_regs(birg->allocatable_regs, ignore_regs, ARRAY_SIZE(ignore_regs));
arm_get_irg_data(irg)->omit_fp = true;
}
return cconv;
}
/**
* Lower a Sel node. Do not touch Sels accessing entities on the frame type.
*/
static void lower_sel(ir_node *sel)
{
ir_graph *irg = get_irn_irg(sel);
ir_entity *ent = get_Sel_entity(sel);
ir_type *owner = get_entity_owner(ent);
dbg_info *dbg = get_irn_dbg_info(sel);
ir_mode *mode = get_irn_mode(sel);
ir_node *bl = get_nodes_block(sel);
ir_node *newn;
/* we can only replace Sels when the layout of the owner type is decided. */
if (get_type_state(owner) != layout_fixed)
return;
if (0 < get_Sel_n_indexs(sel)) {
/* an Array access */
ir_type *basetyp = get_entity_type(ent);
ir_mode *basemode;
ir_node *index;
if (is_Primitive_type(basetyp))
basemode = get_type_mode(basetyp);
else
basemode = mode_P_data;
assert(basemode && "no mode for lowering Sel");
assert((get_mode_size_bits(basemode) % 8 == 0) && "can not deal with unorthodox modes");
index = get_Sel_index(sel, 0);
if (is_Array_type(owner)) {
ir_type *arr_ty = owner;
size_t dims = get_array_n_dimensions(arr_ty);
size_t *map = ALLOCAN(size_t, dims);
ir_mode *mode_Int = get_reference_mode_signed_eq(mode);
ir_tarval *tv;
ir_node *last_size;
size_t i;
assert(dims == (size_t)get_Sel_n_indexs(sel)
&& "array dimension must match number of indices of Sel node");
for (i = 0; i < dims; i++) {
size_t order = get_array_order(arr_ty, i);
assert(order < dims &&
"order of a dimension must be smaller than the arrays dim");
map[order] = i;
}
newn = get_Sel_ptr(sel);
/* Size of the array element */
tv = new_tarval_from_long(get_type_size_bytes(basetyp), mode_Int);
last_size = new_rd_Const(dbg, irg, tv);
/*
* We compute the offset part of dimension d_i recursively
* with the the offset part of dimension d_{i-1}
*
* off_0 = sizeof(array_element_type);
* off_i = (u_i - l_i) * off_{i-1} ; i >= 1
*
* whereas u_i is the upper bound of the current dimension
* and l_i the lower bound of the current dimension.
*/
for (i = dims; i > 0;) {
size_t dim = map[--i];
ir_node *lb, *ub, *elms, *n, *ind;
elms = NULL;
lb = get_array_lower_bound(arr_ty, dim);
ub = get_array_upper_bound(arr_ty, dim);
if (! is_Unknown(lb))
lb = new_rd_Conv(dbg, bl, copy_const_value(get_irn_dbg_info(sel), lb, bl), mode_Int);
else
lb = NULL;
if (! is_Unknown(ub))
ub = new_rd_Conv(dbg, bl, copy_const_value(get_irn_dbg_info(sel), ub, bl), mode_Int);
else
ub = NULL;
/*
* If the array has more than one dimension, lower and upper
* bounds have to be set in the non-last dimension.
*/
if (i > 0) {
assert(lb != NULL && "lower bound has to be set in multi-dim array");
assert(ub != NULL && "upper bound has to be set in multi-dim array");
/* Elements in one Dimension */
elms = new_rd_Sub(dbg, bl, ub, lb, mode_Int);
}
ind = new_rd_Conv(dbg, bl, get_Sel_index(sel, dim), mode_Int);
/*
* Normalize index, id lower bound is set, also assume
* lower bound == 0
*/
if (lb != NULL)
ind = new_rd_Sub(dbg, bl, ind, lb, mode_Int);
n = new_rd_Mul(dbg, bl, ind, last_size, mode_Int);
/*
* see comment above.
*/
if (i > 0)
last_size = new_rd_Mul(dbg, bl, last_size, elms, mode_Int);
newn = new_rd_Add(dbg, bl, newn, n, mode);
}
} else {
/* no array type */
ir_mode *idx_mode = get_irn_mode(index);
ir_tarval *tv = new_tarval_from_long(get_mode_size_bytes(basemode), idx_mode);
newn = new_rd_Add(dbg, bl, get_Sel_ptr(sel),
new_rd_Mul(dbg, bl, index,
new_r_Const(irg, tv),
idx_mode),
mode);
}
} else if (is_Method_type(get_entity_type(ent)) && is_Class_type(owner)) {
/* We need an additional load when accessing methods from a dispatch
* table.
* Matze TODO: Is this really still used? At least liboo does its own
* lowering of Method-Sels...
*/
ir_mode *ent_mode = get_type_mode(get_entity_type(ent));
int offset = get_entity_offset(ent);
ir_mode *mode_Int = get_reference_mode_signed_eq(mode);
ir_tarval *tv = new_tarval_from_long(offset, mode_Int);
ir_node *cnst = new_rd_Const(dbg, irg, tv);
ir_node *add = new_rd_Add(dbg, bl, get_Sel_ptr(sel), cnst, mode);
ir_node *mem = get_Sel_mem(sel);
newn = new_rd_Load(dbg, bl, mem, add, ent_mode, cons_none);
newn = new_r_Proj(newn, ent_mode, pn_Load_res);
} else {
int offset = get_entity_offset(ent);
/* replace Sel by add(obj, const(ent.offset)) */
newn = get_Sel_ptr(sel);
if (offset != 0) {
ir_mode *mode_UInt = get_reference_mode_unsigned_eq(mode);
ir_tarval *tv = new_tarval_from_long(offset, mode_UInt);
ir_node *cnst = new_r_Const(irg, tv);
newn = new_rd_Add(dbg, bl, newn, cnst, mode);
}
}
/* run the hooks */
hook_lower(sel);
exchange(sel, newn);
}
x86_cconv_t *amd64_decide_calling_convention(ir_type *function_type,
ir_graph *irg)
{
bool omit_fp = false;
if (irg != NULL) {
omit_fp = be_options.omit_fp;
if (omit_fp)
irg_walk_graph(irg, check_omit_fp, NULL, &omit_fp);
amd64_get_irg_data(irg)->omit_fp = omit_fp;
}
unsigned *caller_saves = rbitset_malloc(N_AMD64_REGISTERS);
unsigned *callee_saves = rbitset_malloc(N_AMD64_REGISTERS);
rbitset_copy(caller_saves, default_caller_saves, N_AMD64_REGISTERS);
rbitset_copy(callee_saves, default_callee_saves, N_AMD64_REGISTERS);
/* determine how parameters are passed */
size_t n_params = get_method_n_params(function_type);
size_t param_regnum = 0;
size_t float_param_regnum = 0;
reg_or_stackslot_t *params = XMALLOCNZ(reg_or_stackslot_t,
n_params);
/* x64 always reserves space to spill the first 4 arguments to have it
* easy in case of variadic functions. */
unsigned stack_offset = amd64_use_x64_abi ? 32 : 0;
for (size_t i = 0; i < n_params; ++i) {
ir_type *param_type = get_method_param_type(function_type,i);
if (is_compound_type(param_type))
panic("compound arguments NIY");
ir_mode *mode = get_type_mode(param_type);
int bits = get_mode_size_bits(mode);
reg_or_stackslot_t *param = ¶ms[i];
if (mode_is_float(mode) && float_param_regnum < n_float_param_regs
&& mode != x86_mode_E) {
param->reg = float_param_regs[float_param_regnum++];
if (amd64_use_x64_abi) {
++param_regnum;
}
} else if (!mode_is_float(mode) && param_regnum < n_param_regs) {
param->reg = param_regs[param_regnum++];
if (amd64_use_x64_abi) {
++float_param_regnum;
}
} else {
param->type = param_type;
param->offset = stack_offset;
/* increase offset by at least AMD64_REGISTER_SIZE bytes so
* everything is aligned */
stack_offset += round_up2(bits / 8, AMD64_REGISTER_SIZE);
}
}
/* If the function is variadic, we add all unused parameter
* passing registers to the end of the params array, first GP,
* then XMM. */
if (irg && is_method_variadic(function_type)) {
if (amd64_use_x64_abi) {
panic("Variadic functions on Windows ABI not supported");
}
int params_remaining = (n_param_regs - param_regnum) +
(n_float_param_regs - float_param_regnum);
params = XREALLOC(params, reg_or_stackslot_t, n_params + params_remaining);
size_t i = n_params;
for (; param_regnum < n_param_regs; param_regnum++, i++) {
params[i].reg = param_regs[param_regnum];
}
for (; float_param_regnum < n_float_param_regs; float_param_regnum++, i++) {
params[i].reg = float_param_regs[float_param_regnum];
}
}
unsigned n_param_regs_used
= amd64_use_x64_abi ? param_regnum : param_regnum + float_param_regnum;
/* determine how results are passed */
size_t n_results = get_method_n_ress(function_type);
unsigned n_reg_results = 0;
reg_or_stackslot_t *results = XMALLOCNZ(reg_or_stackslot_t, n_results);
unsigned res_regnum = 0;
unsigned res_float_regnum = 0;
unsigned res_x87_regnum = 0;
size_t n_result_regs = ARRAY_SIZE(result_regs);
size_t n_float_result_regs = ARRAY_SIZE(float_result_regs);
size_t n_x87_result_regs = ARRAY_SIZE(x87_result_regs);
for (size_t i = 0; i < n_results; ++i) {
ir_type *result_type = get_method_res_type(function_type, i);
ir_mode *result_mode = get_type_mode(result_type);
reg_or_stackslot_t *result = &results[i];
const arch_register_t *reg;
if (result_mode == x86_mode_E) {
if (res_x87_regnum >= n_x87_result_regs)
panic("too manu x87 floating point results");
reg = x87_result_regs[res_x87_regnum++];
} else if (mode_is_float(result_mode)) {
if (res_float_regnum >= n_float_result_regs) {
panic("too many floating points results");
}
reg = float_result_regs[res_float_regnum++];
} else {
if (res_regnum >= n_result_regs) {
panic("too many results");
}
reg = result_regs[res_regnum++];
}
result->reg = reg;
rbitset_clear(caller_saves, reg->global_index);
++n_reg_results;
}
x86_cconv_t *cconv = XMALLOCZ(x86_cconv_t);
cconv->parameters = params;
cconv->n_parameters = n_params;
cconv->param_stacksize = stack_offset;
cconv->n_param_regs = n_param_regs_used;
cconv->n_xmm_regs = float_param_regnum;
cconv->results = results;
cconv->omit_fp = omit_fp;
cconv->caller_saves = caller_saves;
cconv->callee_saves = callee_saves;
cconv->n_reg_results = n_reg_results;
if (irg != NULL) {
be_irg_t *birg = be_birg_from_irg(irg);
birg->allocatable_regs = be_cconv_alloc_all_regs(&birg->obst, N_AMD64_REGISTERS);
be_cconv_rem_regs(birg->allocatable_regs, ignore_regs, ARRAY_SIZE(ignore_regs));
if (!omit_fp)
rbitset_clear(birg->allocatable_regs, REG_RBP);
}
return cconv;
}
/**
* @return The lowered (floating point) type.
*/
static ir_type *lower_type(ir_type *tp)
{
ir_mode *mode = get_type_mode(tp);
ir_mode *lowered_mode = get_lowered_mode(mode);
return get_type_for_mode(lowered_mode);
}
int check_entity(const ir_entity *entity)
{
bool fine = true;
ir_type *tp = get_entity_type(entity);
ir_linkage linkage = get_entity_linkage(entity);
fine &= constants_on_wrong_irg(entity);
if (is_method_entity(entity)) {
ir_graph *irg = get_entity_irg(entity);
if (irg != NULL) {
ir_entity *irg_entity = get_irg_entity(irg);
if (irg_entity != entity) {
report_error("entity(%+F)->irg->entity(%+F) relation invalid",
entity, irg_entity);
fine = false;
}
}
if (get_entity_peculiarity(entity) == peculiarity_existent) {
ir_entity *impl = get_SymConst_entity(get_atomic_ent_value(entity));
if (impl == NULL) {
report_error("inherited method entity %+F must have constant pointing to existent entity.", entity);
fine = false;
}
}
}
if (linkage & IR_LINKAGE_NO_CODEGEN) {
if (!is_method_entity(entity)) {
report_error("entity %+F has IR_LINKAGE_NO_CODEGEN but is not a function", entity);
fine = false;
} else if (get_entity_irg(entity) == NULL) {
report_error("entity %+F has IR_LINKAGE_NO_CODEGEN but has no ir-graph anyway", entity);
fine = false;
}
if (get_entity_visibility(entity) != ir_visibility_external) {
report_error("entity %+F has IR_LINKAGE_NO_CODEGEN but is not externally visible", entity);
fine = false;
}
}
check_external_linkage(entity, IR_LINKAGE_WEAK, "WEAK");
check_external_linkage(entity, IR_LINKAGE_GARBAGE_COLLECT,
"GARBAGE_COLLECT");
check_external_linkage(entity, IR_LINKAGE_MERGE, "MERGE");
if (is_atomic_entity(entity) && entity->initializer != NULL) {
ir_mode *mode = NULL;
ir_initializer_t *initializer = entity->initializer;
switch (initializer->kind) {
case IR_INITIALIZER_CONST:
mode = get_irn_mode(get_initializer_const_value(initializer));
break;
case IR_INITIALIZER_TARVAL:
mode = get_tarval_mode(get_initializer_tarval_value(initializer));
break;
case IR_INITIALIZER_NULL:
case IR_INITIALIZER_COMPOUND:
break;
}
if (mode != NULL && mode != get_type_mode(tp)) {
report_error("initializer of entity %+F has wrong mode.", entity);
fine = false;
}
}
return fine;
}
calling_convention_t *sparc_decide_calling_convention(ir_type *function_type,
ir_graph *irg)
{
bool omit_fp = false;
if (irg != NULL) {
omit_fp = be_options.omit_fp;
/* our current vaarg handling needs the standard space to store the
* args 0-5 in it */
if (is_method_variadic(function_type))
omit_fp = false;
/* The pointer to the aggregate return value belongs to the 92 magic bytes.
* Thus, if the called functions increases the stack size,
* it must copy the value to the appropriate location.
* This is not implemented yet, so we forbid to omit the frame pointer.
*/
if (get_method_calling_convention(function_type) & cc_compound_ret)
omit_fp = false;
if (omit_fp)
irg_walk_graph(irg, check_omit_fp, NULL, &omit_fp);
sparc_get_irg_data(irg)->omit_fp = omit_fp;
}
mtp_additional_properties mtp
= get_method_additional_properties(function_type);
unsigned *caller_saves = rbitset_malloc(N_SPARC_REGISTERS);
if (mtp & mtp_property_returns_twice) {
rbitset_copy(caller_saves, default_returns_twice_saves,
N_SPARC_REGISTERS);
} else {
rbitset_copy(caller_saves, default_caller_saves, N_SPARC_REGISTERS);
}
/* determine how parameters are passed */
int n_params = get_method_n_params(function_type);
int regnum = 0;
reg_or_stackslot_t *params = XMALLOCNZ(reg_or_stackslot_t, n_params);
int n_param_regs = ARRAY_SIZE(param_regs);
unsigned stack_offset = !omit_fp ? SPARC_MIN_STACKSIZE : 0;
for (int i = 0; i < n_params; ++i) {
ir_type *param_type = get_method_param_type(function_type,i);
ir_mode *mode;
int bits;
reg_or_stackslot_t *param;
if (is_compound_type(param_type))
panic("compound arguments not supported yet");
mode = get_type_mode(param_type);
bits = get_mode_size_bits(mode);
param = ¶ms[i];
if (i == 0 &&
(get_method_calling_convention(function_type) & cc_compound_ret)) {
assert(mode_is_reference(mode) && bits == 32);
/* special case, we have reserved space for this on the between
* type */
param->type = param_type;
param->offset = SPARC_AGGREGATE_RETURN_OFFSET;
param->already_stored = true;
continue;
}
if (regnum < n_param_regs) {
param->offset = SPARC_PARAMS_SPILL_OFFSET
+ regnum * SPARC_REGISTER_SIZE;
param->type = param_type;
arch_register_t const *reg = param_regs[regnum++];
if (irg == NULL || omit_fp)
reg = map_i_to_o_reg(reg);
param->reg0 = reg;
param->req0 = reg->single_req;
} else {
param->type = param_type;
param->offset = stack_offset;
param->already_stored = true;
/* increase offset by at least SPARC_REGISTER_SIZE bytes so
* everything is aligned */
stack_offset += MAX(bits / 8, SPARC_REGISTER_SIZE);
continue;
}
/* we might need a 2nd 32bit component (for 64bit or double values) */
if (bits > 32) {
if (bits > 64)
panic("only 32 and 64bit modes supported");
if (regnum < n_param_regs) {
param->offset = SPARC_PARAMS_SPILL_OFFSET
+ regnum * SPARC_REGISTER_SIZE;
arch_register_t const *reg = param_regs[regnum++];
if (irg == NULL || omit_fp)
reg = map_i_to_o_reg(reg);
param->reg1 = reg;
param->req1 = reg->single_req;
} else {
ir_mode *regmode = param_regs[0]->cls->mode;
ir_type *type = get_type_for_mode(regmode);
param->type = type;
param->offset = stack_offset;
assert(get_mode_size_bits(regmode) == 32);
stack_offset += SPARC_REGISTER_SIZE;
}
}
}
unsigned n_param_regs_used = regnum;
/* determine how results are passed */
int n_results = get_method_n_ress(function_type);
unsigned float_regnum = 0;
unsigned n_reg_results = 0;
unsigned n_float_result_regs = ARRAY_SIZE(float_result_regs);
reg_or_stackslot_t *results = XMALLOCNZ(reg_or_stackslot_t, n_results);
regnum = 0;
for (int i = 0; i < n_results; ++i) {
ir_type *result_type = get_method_res_type(function_type, i);
ir_mode *result_mode = get_type_mode(result_type);
reg_or_stackslot_t *result = &results[i];
if (mode_is_float(result_mode)) {
unsigned n_regs = determine_n_float_regs(result_mode);
unsigned next_reg = round_up2(float_regnum, n_regs);
if (next_reg >= n_float_result_regs) {
panic("too many float results");
} else {
const arch_register_t *reg = float_result_regs[next_reg];
rbitset_clear(caller_saves, reg->global_index);
if (n_regs == 1) {
result->req0 = reg->single_req;
} else if (n_regs == 2) {
result->req0 = &float_result_reqs_double[next_reg];
rbitset_clear(caller_saves, reg->global_index+1);
} else if (n_regs == 4) {
result->req0 = &float_result_reqs_quad[next_reg];
rbitset_clear(caller_saves, reg->global_index+1);
rbitset_clear(caller_saves, reg->global_index+2);
rbitset_clear(caller_saves, reg->global_index+3);
} else {
panic("invalid number of registers in result");
}
float_regnum = next_reg + n_regs;
++n_reg_results;
}
} else {
if (get_mode_size_bits(result_mode) > 32) {
panic("results with more than 32bits not supported yet");
}
if (regnum >= n_param_regs) {
panic("too many results");
} else {
const arch_register_t *reg = param_regs[regnum++];
if (irg == NULL || omit_fp)
reg = map_i_to_o_reg(reg);
result->req0 = reg->single_req;
rbitset_clear(caller_saves, reg->global_index);
++n_reg_results;
}
}
}
calling_convention_t *cconv = XMALLOCZ(calling_convention_t);
cconv->n_parameters = n_params;
cconv->parameters = params;
cconv->param_stack_size = stack_offset - SPARC_MIN_STACKSIZE;
cconv->n_param_regs = n_param_regs_used;
cconv->results = results;
cconv->omit_fp = omit_fp;
cconv->caller_saves = caller_saves;
cconv->n_reg_results = n_reg_results;
/* setup ignore register array */
if (irg != NULL) {
be_irg_t *birg = be_birg_from_irg(irg);
birg->allocatable_regs = be_cconv_alloc_all_regs(&birg->obst, N_SPARC_REGISTERS);
be_cconv_rem_regs(birg->allocatable_regs, ignore_regs, ARRAY_SIZE(ignore_regs));
}
return cconv;
}
x86_cconv_t *amd64_decide_calling_convention(ir_type *function_type,
ir_graph *irg)
{
bool omit_fp = false;
if (irg != NULL) {
omit_fp = be_options.omit_fp;
if (omit_fp)
irg_walk_graph(irg, check_omit_fp, NULL, &omit_fp);
}
mtp_additional_properties mtp
= get_method_additional_properties(function_type);
unsigned *caller_saves = rbitset_malloc(N_AMD64_REGISTERS);
unsigned *callee_saves = rbitset_malloc(N_AMD64_REGISTERS);
if (mtp & mtp_property_returns_twice)
panic("amd64: returns_twice calling convention NIY");
rbitset_copy(caller_saves, default_caller_saves, N_AMD64_REGISTERS);
rbitset_copy(callee_saves, default_callee_saves, N_AMD64_REGISTERS);
/* determine how parameters are passed */
size_t n_params = get_method_n_params(function_type);
size_t param_regnum = 0;
size_t float_param_regnum = 0;
reg_or_stackslot_t *params = XMALLOCNZ(reg_or_stackslot_t,
n_params);
/* x64 always reserves space to spill the first 4 arguments to have it
* easy in case of variadic functions. */
unsigned stack_offset = amd64_use_x64_abi ? 32 : 0;
for (size_t i = 0; i < n_params; ++i) {
ir_type *param_type = get_method_param_type(function_type,i);
if (is_compound_type(param_type))
panic("amd64: compound arguments NIY");
ir_mode *mode = get_type_mode(param_type);
int bits = get_mode_size_bits(mode);
reg_or_stackslot_t *param = ¶ms[i];
if (mode_is_float(mode) && float_param_regnum < n_float_param_regs) {
param->reg = float_param_regs[float_param_regnum++];
if (amd64_use_x64_abi)
++param_regnum;
} else if (!mode_is_float(mode) && param_regnum < n_param_regs) {
param->reg = param_regs[param_regnum++];
if (amd64_use_x64_abi)
++float_param_regnum;
} else {
param->type = param_type;
param->offset = stack_offset;
/* increase offset by at least AMD64_REGISTER_SIZE bytes so
* everything is aligned */
stack_offset += MAX(bits / 8, AMD64_REGISTER_SIZE);
continue;
}
}
unsigned n_param_regs_used
= amd64_use_x64_abi ? param_regnum : param_regnum + float_param_regnum;
/* determine how results are passed */
size_t n_results = get_method_n_ress(function_type);
unsigned n_reg_results = 0;
reg_or_stackslot_t *results = XMALLOCNZ(reg_or_stackslot_t, n_results);
unsigned res_regnum = 0;
unsigned res_float_regnum = 0;
size_t n_result_regs = ARRAY_SIZE(result_regs);
size_t n_float_result_regs = ARRAY_SIZE(float_result_regs);
for (size_t i = 0; i < n_results; ++i) {
ir_type *result_type = get_method_res_type(function_type, i);
ir_mode *result_mode = get_type_mode(result_type);
reg_or_stackslot_t *result = &results[i];
const arch_register_t *reg;
if (mode_is_float(result_mode)) {
if (res_float_regnum >= n_float_result_regs) {
panic("too many floating points results");
}
reg = float_result_regs[res_float_regnum++];
} else {
if (res_regnum >= n_result_regs) {
panic("too many results");
}
reg = result_regs[res_regnum++];
}
result->reg = reg;
rbitset_clear(caller_saves, reg->global_index);
++n_reg_results;
}
x86_cconv_t *cconv = XMALLOCZ(x86_cconv_t);
cconv->parameters = params;
cconv->callframe_size = stack_offset;
cconv->n_param_regs = n_param_regs_used;
cconv->n_xmm_regs = float_param_regnum;
cconv->results = results;
cconv->omit_fp = omit_fp;
cconv->caller_saves = caller_saves;
cconv->callee_saves = callee_saves;
cconv->n_reg_results = n_reg_results;
if (irg != NULL) {
be_irg_t *birg = be_birg_from_irg(irg);
size_t n_ignores = ARRAY_SIZE(ignore_regs);
struct obstack *obst = &birg->obst;
birg->allocatable_regs = rbitset_obstack_alloc(obst, N_AMD64_REGISTERS);
rbitset_set_all(birg->allocatable_regs, N_AMD64_REGISTERS);
for (size_t r = 0; r < n_ignores; ++r) {
rbitset_clear(birg->allocatable_regs, ignore_regs[r]);
}
if (!omit_fp)
rbitset_clear(birg->allocatable_regs, REG_RBP);
}
return cconv;
}
