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);
}
/**
* Adjust the size of a node representing a stack alloc to a certain
* stack_alignment.
*
* @param size the node containing the non-aligned size
* @param block the block where new nodes are allocated on
* @return a node representing the aligned size
*/
static ir_node *adjust_alloc_size(dbg_info *dbgi, ir_node *size, ir_node *block)
{
/* Example: po2_alignment 4 (align to 16 bytes):
* size = (size+15) & 0xfff...f8 */
ir_mode *mode = get_irn_mode(size);
ir_graph *irg = get_irn_irg(block);
ir_tarval *allone = get_mode_all_one(mode);
ir_tarval *shr = tarval_shr_unsigned(allone, po2_stack_alignment);
ir_tarval *mask = tarval_shl_unsigned(shr, po2_stack_alignment);
ir_tarval *invmask = tarval_not(mask);
ir_node *addv = new_r_Const(irg, invmask);
ir_node *add = new_rd_Add(dbgi, block, size, addv);
ir_node *maskc = new_r_Const(irg, mask);
ir_node *and = new_rd_And(dbgi, block, add, maskc);
return and;
}
/**
* Adjust the size of a node representing a stack alloc to a certain
* stack_alignment.
*
* @param size the node containing the non-aligned size
* @param block the block where new nodes are allocated on
* @return a node representing the aligned size
*/
static ir_node *adjust_alloc_size(dbg_info *dbgi, ir_node *size, ir_node *block)
{
if (stack_alignment <= 1)
return size;
if (is_Const(size) && !lower_constant_sizes)
return size;
ir_mode *mode = get_irn_mode(size);
ir_tarval *tv = new_tarval_from_long(stack_alignment-1, mode);
ir_graph *irg = get_Block_irg(block);
ir_node *mask = new_r_Const(irg, tv);
size = new_rd_Add(dbgi, block, size, mask, mode);
tv = new_tarval_from_long(-(long)stack_alignment, mode);
mask = new_r_Const(irg, tv);
size = new_rd_And(dbgi, block, size, mask, mode);
return size;
}
static ir_node *gcji_get_arrayclass(ir_node *block, ir_node **mem,
ir_node *array_class_ref)
{
ir_graph *irg = get_irn_irg(block);
ir_node *addr = new_r_Address(irg, gcj_get_array_class_entity);
ir_node *null = new_r_Const(irg, get_mode_null(mode_reference));
ir_node *args[] = { array_class_ref, null };
ir_type *call_type = get_entity_type(gcj_get_array_class_entity);
ir_node *call = new_r_Call(block, *mem, addr, ARRAY_SIZE(args), args,
call_type);
ir_node *new_mem = new_Proj(call, mode_M, pn_Call_M);
ir_node *ress = new_Proj(call, mode_T, pn_Call_T_result);
ir_node *res = new_Proj(ress, mode_reference, 0);
*mem = new_mem;
return res;
}
static ir_node *gcji_instanceof(ir_node *objptr, ir_type *classtype,
ir_graph *irg, ir_node *block, ir_node **mem)
{
ir_node *jclass = gcji_get_runtime_classinfo_(block, mem, classtype);
ir_node *addr = new_r_Address(irg, gcj_instanceof_entity);
ir_node *args[] = { objptr, jclass };
ir_type *call_type = get_entity_type(gcj_instanceof_entity);
ir_node *call = new_r_Call(block, *mem, addr, ARRAY_SIZE(args), args,
call_type);
ir_node *new_mem = new_r_Proj(call, mode_M, pn_Call_M);
ir_node *ress = new_r_Proj(call, mode_T, pn_Call_T_result);
ir_node *call_res = new_r_Proj(ress, mode_int, 0);
ir_node *zero = new_r_Const(irg, get_mode_null(mode_int));
ir_node *res = new_r_Cmp(block, call_res, zero,
ir_relation_less_greater);
*mem = new_mem;
return res;
}
/**
* lower 64bit conversions
*/
static void ia32_lower_conv64(ir_node *node, ir_mode *mode)
{
dbg_info *dbg = get_irn_dbg_info(node);
ir_node *op = get_Conv_op(node);
ir_mode *mode_from = get_irn_mode(op);
ir_mode *mode_to = get_irn_mode(node);
if (mode_is_float(mode_from) && get_mode_size_bits(mode_to) == 64
&& get_mode_arithmetic(mode_to) == irma_twos_complement) {
/* We have a Conv float -> long long here */
ir_node *float_to_ll;
ir_node *l_res;
ir_node *h_res;
if (mode_is_signed(mode)) {
/* convert from float to signed 64bit */
ir_node *block = get_nodes_block(node);
float_to_ll = new_bd_ia32_l_FloattoLL(dbg, block, op);
l_res = new_r_Proj(float_to_ll, ia32_mode_gp,
pn_ia32_l_FloattoLL_res_low);
h_res = new_r_Proj(float_to_ll, mode,
pn_ia32_l_FloattoLL_res_high);
} else {
/* Convert from float to unsigned 64bit. */
ir_graph *irg = get_irn_irg(node);
ir_tarval *flt_tv
= new_tarval_from_str("9223372036854775808", 19, x86_mode_E);
ir_node *flt_corr = new_r_Const(irg, flt_tv);
ir_node *lower_blk = part_block_dw(node);
ir_node *upper_blk = get_nodes_block(node);
set_dw_control_flow_changed();
ir_node *opc = new_rd_Conv(dbg, upper_blk, op, x86_mode_E);
ir_node *cmp = new_rd_Cmp(dbg, upper_blk, opc, flt_corr,
ir_relation_less);
ir_node *cond = new_rd_Cond(dbg, upper_blk, cmp);
ir_node *in[] = {
new_r_Proj(cond, mode_X, pn_Cond_true),
new_r_Proj(cond, mode_X, pn_Cond_false)
};
ir_node *blk = new_r_Block(irg, 1, &in[1]);
in[1] = new_r_Jmp(blk);
set_irn_in(lower_blk, 2, in);
/* create to Phis */
ir_node *phi_in[] = {
new_r_Const_null(irg, mode),
new_r_Const_long(irg, mode, 0x80000000)
};
ir_node *int_phi
= new_r_Phi(lower_blk, ARRAY_SIZE(phi_in), phi_in, mode);
ir_node *fphi_in[] = {
opc,
new_rd_Sub(dbg, upper_blk, opc, flt_corr, x86_mode_E)
};
ir_node *flt_phi
= new_r_Phi(lower_blk, ARRAY_SIZE(fphi_in), fphi_in,
x86_mode_E);
/* fix Phi links for next part_block() */
if (is_Phi(int_phi))
add_Block_phi(lower_blk, int_phi);
if (is_Phi(flt_phi))
add_Block_phi(lower_blk, flt_phi);
float_to_ll = new_bd_ia32_l_FloattoLL(dbg, lower_blk, flt_phi);
l_res = new_r_Proj(float_to_ll, ia32_mode_gp,
pn_ia32_l_FloattoLL_res_low);
h_res = new_r_Proj(float_to_ll, mode,
pn_ia32_l_FloattoLL_res_high);
h_res = new_rd_Add(dbg, lower_blk, h_res, int_phi, mode);
/* move the call and its Proj's to the lower block */
set_nodes_block(node, lower_blk);
for (ir_node *proj = (ir_node*)get_irn_link(node); proj != NULL;
proj = (ir_node*)get_irn_link(proj)) {
set_nodes_block(proj, lower_blk);
}
}
ir_set_dw_lowered(node, l_res, h_res);
} else if (get_mode_size_bits(mode_from) == 64
&& get_mode_arithmetic(mode_from) == irma_twos_complement
&& mode_is_float(mode_to)) {
/* We have a Conv long long -> float here */
ir_node *op_low = get_lowered_low(op);
ir_node *op_high = get_lowered_high(op);
ir_node *block = get_nodes_block(node);
ir_node *ll_to_float
= new_bd_ia32_l_LLtoFloat(dbg, block, op_high, op_low, mode_to);
exchange(node, ll_to_float);
} else {
ir_default_lower_dw_Conv(node, mode);
}
}
/**
* 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);
}
/**
* Lower a all possible SymConst nodes.
*/
static void lower_symconst(ir_node *symc)
{
ir_node *newn;
ir_type *tp;
ir_entity *ent;
ir_tarval *tv;
ir_enum_const *ec;
ir_mode *mode;
ir_graph *irg;
switch (get_SymConst_kind(symc)) {
case symconst_type_size:
/* rewrite the SymConst node by a Const node */
irg = get_irn_irg(symc);
tp = get_SymConst_type(symc);
assert(get_type_state(tp) == layout_fixed);
mode = get_irn_mode(symc);
newn = new_r_Const_long(irg, mode, get_type_size_bytes(tp));
assert(newn);
/* run the hooks */
hook_lower(symc);
exchange(symc, newn);
break;
case symconst_type_align:
/* rewrite the SymConst node by a Const node */
irg = get_irn_irg(symc);
tp = get_SymConst_type(symc);
assert(get_type_state(tp) == layout_fixed);
mode = get_irn_mode(symc);
newn = new_r_Const_long(irg, mode, get_type_alignment_bytes(tp));
assert(newn);
/* run the hooks */
hook_lower(symc);
exchange(symc, newn);
break;
case symconst_addr_ent:
/* leave */
break;
case symconst_ofs_ent:
/* rewrite the SymConst node by a Const node */
irg = get_irn_irg(symc);
ent = get_SymConst_entity(symc);
assert(get_type_state(get_entity_type(ent)) == layout_fixed);
mode = get_irn_mode(symc);
newn = new_r_Const_long(irg, mode, get_entity_offset(ent));
assert(newn);
/* run the hooks */
hook_lower(symc);
exchange(symc, newn);
break;
case symconst_enum_const:
/* rewrite the SymConst node by a Const node */
irg = get_irn_irg(symc);
ec = get_SymConst_enum(symc);
assert(get_type_state(get_enumeration_owner(ec)) == layout_fixed);
tv = get_enumeration_value(ec);
newn = new_r_Const(irg, tv);
assert(newn);
/* run the hooks */
hook_lower(symc);
exchange(symc, newn);
break;
default:
assert(!"unknown SymConst kind");
break;
}
}
