#include "adt/error.h"
#include "adt/array.h"
+#include "adt/strutil.h"
#include "adt/util.h"
#include "symbol_t.h"
#include "token_t.h"
static int next_value_number_function;
static ir_node *continue_label;
static ir_node *break_label;
-static ir_node *current_switch_cond;
+static ir_node *current_switch;
static bool saw_default_label;
static label_t **all_labels;
static entity_t **inner_functions;
static const entity_t *current_function_entity;
static ir_node *current_function_name;
static ir_node *current_funcsig;
-static switch_statement_t *current_switch;
static ir_graph *current_function;
static translation_unit_t *current_translation_unit;
static trampoline_region *current_trampolines;
static ir_type *current_outer_frame;
static ir_node *current_static_link;
+static ir_entity *current_vararg_entity;
static entitymap_t entitymap;
DECLARATION_KIND_INNER_FUNCTION
} declaration_kind_t;
-static ir_mode *get_ir_mode_storage(type_t *type);
-
static ir_type *get_ir_type_incomplete(type_t *type);
static void enqueue_inner_function(entity_t *entity)
set_cur_block(NULL);
}
-static ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
-
-static ir_mode *mode_int, *mode_uint;
+ir_mode *atomic_modes[ATOMIC_TYPE_LAST+1];
static ir_node *_expression_to_firm(const expression_t *expression);
static ir_node *expression_to_firm(const expression_t *expression);
{
unsigned flags = get_atomic_type_flags(kind);
unsigned size = get_atomic_type_size(kind);
- if ( (flags & (ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_FLOAT))
- && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
+ if ((flags & ATOMIC_TYPE_FLAG_FLOAT)
+ && !(flags & ATOMIC_TYPE_FLAG_COMPLEX)) {
+ if (size == 4) {
+ return get_modeF();
+ } else if (size == 8) {
+ return get_modeD();
+ } else {
+ panic("unexpected kind");
+ }
+ } else if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
char name[64];
- ir_mode_sort sort;
unsigned bit_size = size * 8;
bool is_signed = (flags & ATOMIC_TYPE_FLAG_SIGNED) != 0;
- unsigned modulo_shift = 0;
- ir_mode_arithmetic arithmetic;
-
- if (flags & ATOMIC_TYPE_FLAG_INTEGER) {
- assert(! (flags & ATOMIC_TYPE_FLAG_FLOAT));
- snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U",
- bit_size);
- sort = irms_int_number;
- arithmetic = irma_twos_complement;
- modulo_shift = decide_modulo_shift(bit_size);
- } else {
- assert(flags & ATOMIC_TYPE_FLAG_FLOAT);
- snprintf(name, sizeof(name), "F%u", bit_size);
- sort = irms_float_number;
- arithmetic = irma_ieee754;
- }
- return new_ir_mode(name, sort, bit_size, is_signed, arithmetic,
- modulo_shift);
+ unsigned modulo_shift = decide_modulo_shift(bit_size);
+
+ snprintf(name, sizeof(name), "%s%u", is_signed ? "I" : "U", bit_size);
+ return new_int_mode(name, irma_twos_complement, bit_size, is_signed,
+ modulo_shift);
}
return NULL;
*/
static void init_atomic_modes(void)
{
+ atomic_modes[ATOMIC_TYPE_VOID] = mode_ANY;
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);
}
- mode_int = atomic_modes[ATOMIC_TYPE_INT];
- mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
-
- /* there's no real void type in firm */
- atomic_modes[ATOMIC_TYPE_VOID] = atomic_modes[ATOMIC_TYPE_CHAR];
}
ir_mode *get_atomic_mode(atomic_type_kind_t kind)
return size_node;
}
-/**
- * Return a node representing the size of a type.
- */
-static ir_node *get_type_size_node(type_t *type)
-{
- type = skip_typeref(type);
-
- if (is_type_array(type) && type->array.is_vla) {
- ir_node *size_node = get_vla_size(&type->array);
- ir_node *elem_size = get_type_size_node(type->array.element_type);
- ir_mode *mode = get_irn_mode(size_node);
- ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
- return real_size;
- }
-
- ir_mode *mode = get_ir_mode_storage(type_size_t);
- symconst_symbol sym;
- sym.type_p = get_ir_type(type);
- return new_SymConst(mode, sym, symconst_type_size);
-}
-
static unsigned count_parameters(const function_type_t *function_type)
{
unsigned count = 0;
ir_type *irtype = new_d_type_primitive(mode, dbgi);
il_alignment_t alignment = get_atomic_type_alignment(akind);
+ set_type_size_bytes(irtype, get_atomic_type_size(akind));
set_type_alignment_bytes(irtype, alignment);
return irtype;
if (for_closure)
set_method_calling_convention(irtype, get_method_calling_convention(irtype) | cc_this_call);
+ const decl_modifiers_t modifiers = function_type->modifiers;
+ if (modifiers & DM_CONST)
+ add_method_additional_properties(irtype, mtp_property_const);
+ if (modifiers & DM_PURE)
+ add_method_additional_properties(irtype, mtp_property_pure);
+ if (modifiers & DM_RETURNS_TWICE)
+ add_method_additional_properties(irtype, mtp_property_returns_twice);
+ if (modifiers & DM_NORETURN)
+ add_method_additional_properties(irtype, mtp_property_noreturn);
+ if (modifiers & DM_NOTHROW)
+ add_method_additional_properties(irtype, mtp_property_nothrow);
+ if (modifiers & DM_MALLOC)
+ add_method_additional_properties(irtype, mtp_property_malloc);
+
return irtype;
}
char name[32];
snprintf(name, sizeof(name), "bf_I%u", size);
- mode = new_ir_mode(name, irms_int_number, size, 1, irma_twos_complement,
- size <= 32 ? 32 : size );
+ mode = new_int_mode(name, irma_twos_complement, size, 1, 0);
s_modes[size] = mode;
}
char name[32];
snprintf(name, sizeof(name), "bf_U%u", size);
- mode = new_ir_mode(name, irms_int_number, size, 0, irma_twos_complement,
- size <= 32 ? 32 : size );
+ mode = new_int_mode(name, irma_twos_complement, size, 0, 0);
u_modes[size] = mode;
}
return irtype;
}
-static ir_type *create_enum_type(enum_type_t *const type)
+static void determine_enum_values(enum_type_t *const type)
{
- type->base.base.firm_type = ir_type_int;
-
- ir_mode *const mode = mode_int;
+ ir_mode *const mode = atomic_modes[type->base.akind];
ir_tarval *const one = get_mode_one(mode);
ir_tarval * tv_next = get_mode_null(mode);
}
tv_next = get_Const_tarval(cnst);
}
+ assert(entry->enum_value.tv == NULL || entry->enum_value.tv == tv_next);
entry->enum_value.tv = tv_next;
tv_next = tarval_add(tv_next, one);
}
constant_folding = constant_folding_old;
+}
+static ir_type *create_enum_type(enum_type_t *const type)
+{
return create_atomic_type(type->base.akind, (const type_t*) type);
}
return mode;
}
+/**
+ * Return a node representing the size of a type.
+ */
+static ir_node *get_type_size_node(type_t *type)
+{
+ unsigned size;
+ ir_mode *mode = get_ir_mode_arithmetic(type_size_t);
+ type = skip_typeref(type);
+
+ if (is_type_array(type) && type->array.is_vla) {
+ ir_node *size_node = get_vla_size(&type->array);
+ ir_node *elem_size = get_type_size_node(type->array.element_type);
+ ir_node *real_size = new_d_Mul(NULL, size_node, elem_size, mode);
+ return real_size;
+ }
+
+ size = get_type_size(type);
+ return new_Const_long(mode, size);
+}
+
/** Names of the runtime functions. */
static const struct {
int id; /**< the rts id */
return new_d_SymConst(dbgi, mode_P, sym, symconst_addr_ent);
}
+static ir_node *create_conv_from_b(dbg_info *dbgi, ir_node *value,
+ ir_mode *dest_mode)
+{
+ if (is_Const(value)) {
+ if (is_Const_null(value)) {
+ return new_Const(get_mode_null(dest_mode));
+ } else {
+ return new_Const(get_mode_one(dest_mode));
+ }
+ }
+
+ ir_node *cond = new_d_Cond(dbgi, value);
+ ir_node *proj_true = new_Proj(cond, mode_X, pn_Cond_true);
+ ir_node *proj_false = new_Proj(cond, mode_X, pn_Cond_false);
+ ir_node *tblock = new_Block(1, &proj_true);
+ ir_node *fblock = new_Block(1, &proj_false);
+ set_cur_block(tblock);
+ ir_node *const1 = new_Const(get_mode_one(dest_mode));
+ ir_node *tjump = new_Jmp();
+ set_cur_block(fblock);
+ ir_node *const0 = new_Const(get_mode_null(dest_mode));
+ ir_node *fjump = new_Jmp();
+
+ ir_node *in[2] = { tjump, fjump };
+ ir_node *mergeblock = new_Block(2, in);
+ set_cur_block(mergeblock);
+ ir_node *phi_in[2] = { const1, const0 };
+ ir_node *phi = new_Phi(2, phi_in, dest_mode);
+ return phi;
+}
+
static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
{
ir_mode *value_mode = get_irn_mode(value);
ir_node *zero = new_Const(get_mode_null(value_mode));
ir_node *cmp = new_d_Cmp(dbgi, value, zero, ir_relation_less_greater);
return cmp;
+ } else if (value_mode == mode_b) {
+ return create_conv_from_b(dbgi, value, dest_mode);
}
return new_d_Conv(dbgi, value, dest_mode);
ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
set_store(new_Proj(irn, mode_M, pn_Builtin_M));
- return new_Proj(irn, mode, pn_Builtin_1_result);
+ return new_Proj(irn, mode, pn_Builtin_max+1);
}
/**
static ir_node *deref_address(dbg_info *const dbgi, type_t *const type,
ir_node *const addr)
{
- ir_type *irtype = get_ir_type(type);
+ type_t *skipped = skip_typeref(type);
+ if (is_type_incomplete(skipped))
+ return addr;
+
+ ir_type *irtype = get_ir_type(skipped);
if (is_compound_type(irtype)
- || is_Method_type(irtype)
- || is_Array_type(irtype)) {
+ || is_Method_type(irtype)
+ || is_Array_type(irtype)) {
return addr;
}
- ir_cons_flags flags = type->base.qualifiers & TYPE_QUALIFIER_VOLATILE
+ ir_cons_flags flags = skipped->base.qualifiers & TYPE_QUALIFIER_VOLATILE
? cons_volatile : cons_none;
ir_mode *const mode = get_type_mode(irtype);
ir_node *const memory = get_store();
set_store(load_mem);
- ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(type);
+ ir_mode *const mode_arithmetic = get_ir_mode_arithmetic(skipped);
return create_conv(dbgi, load_res, mode_arithmetic);
}
const reference_expression_t *ref)
{
entity_t *entity = ref->entity;
- type_t *type = skip_typeref(entity->enum_value.enum_type);
- /* make sure the type is constructed */
- (void) get_ir_type(type);
+ if (entity->enum_value.tv == NULL) {
+ type_t *type = skip_typeref(entity->enum_value.enum_type);
+ assert(type->kind == TYPE_ENUM);
+ determine_enum_values(&type->enumt);
+ }
return new_Const(entity->enum_value.tv);
}
ir_node *val = expression_to_firm(call->arguments->expression);
ir_node *shf = expression_to_firm(call->arguments->next->expression);
ir_mode *mode = get_irn_mode(val);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
return new_d_Rotl(dbgi, val, create_conv(dbgi, shf, mode_uint), mode);
}
case BUILTIN_ROTR: {
ir_node *val = expression_to_firm(call->arguments->expression);
ir_node *shf = expression_to_firm(call->arguments->next->expression);
ir_mode *mode = get_irn_mode(val);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
ir_node *c = new_Const_long(mode_uint, get_mode_size_bits(mode));
ir_node *sub = new_d_Sub(dbgi, c, create_conv(dbgi, shf, mode_uint), mode_uint);
return new_d_Rotl(dbgi, val, sub, mode);
if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
assert(is_type_scalar(return_type));
ir_mode *mode = get_ir_mode_storage(return_type);
- result = new_Proj(node, mode, pn_Builtin_1_result);
+ result = new_Proj(node, mode, pn_Builtin_max+1);
ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
result = create_conv(NULL, result, mode_arith);
}
}
}
- if (function->kind == EXPR_REFERENCE &&
- function->reference.entity->declaration.modifiers & DM_NORETURN) {
+ if (function_type->modifiers & DM_NORETURN) {
/* A dead end: Keep the Call and the Block. Also place all further
* nodes into a new and unreachable block. */
keep_alive(node);
{
ir_tarval *all_one = get_mode_all_one(mode);
int mode_size = get_mode_size_bits(mode);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
assert(offset >= 0);
assert(size >= 0);
}
static ir_node *bitfield_store_to_firm(dbg_info *dbgi,
- ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile)
+ ir_entity *entity, ir_node *addr, ir_node *value, bool set_volatile,
+ bool need_return)
{
ir_type *entity_type = get_entity_type(entity);
ir_type *base_type = get_primitive_base_type(entity_type);
- assert(base_type != NULL);
ir_mode *mode = get_type_mode(base_type);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
value = create_conv(dbgi, value, mode);
/* kill upper bits of value and shift to right position */
- int bitoffset = get_entity_offset_bits_remainder(entity);
- int bitsize = get_mode_size_bits(get_type_mode(entity_type));
- ir_tarval *mask = create_bitfield_mask(mode, 0, bitsize);
- ir_node *mask_node = new_d_Const(dbgi, mask);
- ir_node *value_masked = new_d_And(dbgi, value, mask_node, mode);
- ir_tarval *shiftl = new_tarval_from_long(bitoffset, mode_uint);
- ir_node *shiftcount = new_d_Const(dbgi, shiftl);
- ir_node *value_maskshift = new_d_Shl(dbgi, value_masked, shiftcount, mode);
+ unsigned bitoffset = get_entity_offset_bits_remainder(entity);
+ unsigned bitsize = get_mode_size_bits(get_type_mode(entity_type));
+ unsigned base_bits = get_mode_size_bits(mode);
+ unsigned shiftwidth = base_bits - bitsize;
+
+ ir_node *shiftcount = new_Const_long(mode_uint, shiftwidth);
+ ir_node *shiftl = new_d_Shl(dbgi, value, shiftcount, mode);
+
+ unsigned shrwidth = base_bits - bitsize - bitoffset;
+ ir_node *shrconst = new_Const_long(mode_uint, shrwidth);
+ ir_node *shiftr = new_d_Shr(dbgi, shiftl, shrconst, mode);
/* load current value */
ir_node *mem = get_store();
ir_node *load_res_masked = new_d_And(dbgi, load_res, inv_mask_node, mode);
/* construct new value and store */
- ir_node *new_val = new_d_Or(dbgi, load_res_masked, value_maskshift, mode);
+ ir_node *new_val = new_d_Or(dbgi, load_res_masked, shiftr, mode);
ir_node *store = new_d_Store(dbgi, load_mem, addr, new_val,
set_volatile ? cons_volatile : cons_none);
ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M);
set_store(store_mem);
- return value_masked;
+ if (!need_return)
+ return NULL;
+
+ ir_node *res_shr;
+ ir_node *count_res_shr = new_Const_long(mode_uint, base_bits - bitsize);
+ if (mode_is_signed(mode)) {
+ res_shr = new_d_Shrs(dbgi, shiftl, count_res_shr, mode);
+ } else {
+ res_shr = new_d_Shr(dbgi, shiftl, count_res_shr, mode);
+ }
+ return res_shr;
}
static ir_node *bitfield_extract_to_firm(const select_expression_t *expression,
ir_node *load = new_d_Load(dbgi, mem, addr, mode, cons_none);
ir_node *load_mem = new_d_Proj(dbgi, load, mode_M, pn_Load_M);
ir_node *load_res = new_d_Proj(dbgi, load, mode, pn_Load_res);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
ir_mode *amode = mode;
/* optimisation, since shifting in modes < machine_size is usually
/* kill upper bits */
assert(expression->compound_entry->kind == ENTITY_COMPOUND_MEMBER);
- int bitoffset = entity->compound_member.bit_offset;
- int bitsize = entity->compound_member.bit_size;
+ unsigned bitoffset = entity->compound_member.bit_offset;
+ unsigned bitsize = entity->compound_member.bit_size;
unsigned shift_bitsl = amode_size - bitoffset - bitsize;
ir_tarval *tvl = new_tarval_from_long((long)shift_bitsl, mode_uint);
ir_node *countl = new_d_Const(dbgi, tvl);
bool set_volatile
= select->base.type->base.qualifiers & TYPE_QUALIFIER_VOLATILE;
value = bitfield_store_to_firm(dbgi, irentity, addr, value,
- set_volatile);
+ set_volatile, true);
return value;
}
}
case EXPR_BINARY_SHIFTLEFT_ASSIGN:
case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
mode = get_ir_mode_arithmetic(expression->base.type);
- right = create_conv(dbgi, right, mode_uint);
+ right = create_conv(dbgi, right, atomic_modes[ATOMIC_TYPE_UINT]);
break;
case EXPR_BINARY_SUB:
assert(entry->declaration.kind == DECLARATION_KIND_COMPOUND_MEMBER);
if (constant_folding) {
- ir_mode *mode = get_irn_mode(compound_addr);
- /* FIXME: here, we need an integer mode with the same number of bits as mode */
- ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
+ ir_mode *mode = get_irn_mode(compound_addr);
+ ir_mode *mode_uint = get_reference_mode_unsigned_eq(mode);
+ ir_node *ofs = new_Const_long(mode_uint, entry->compound_member.offset);
return new_d_Add(dbgi, compound_addr, ofs, mode);
} else {
ir_entity *irentity = entry->compound_member.entity;
make_const:;
dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
- ir_tarval *const tv = new_tarval_from_long(tc, mode_int);
+ ir_mode *const mode = atomic_modes[ATOMIC_TYPE_INT];
+ ir_tarval *const tv = new_tarval_from_long(tc, mode);
return new_d_Const(dbgi, tv);
}
static ir_node *va_start_expression_to_firm(
const va_start_expression_t *const expr)
{
- ir_graph *const irg = current_ir_graph;
- type_t *const type = current_function_entity->declaration.type;
- ir_type *const method_type = get_ir_type(type);
- size_t const n = get_method_n_params(method_type);
- ir_type *const frame_type = get_irg_frame_type(irg);
- ir_type *const param_type = get_unknown_type();
- ir_entity *const param_ent =
- new_parameter_entity(frame_type, n, param_type);
- ir_node *const frame = get_irg_frame(irg);
- dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
- ir_node *const no_mem = new_NoMem();
- ir_node *const arg_sel =
- new_d_simpleSel(dbgi, no_mem, frame, param_ent);
+ ir_entity *param_ent = current_vararg_entity;
+ if (param_ent == NULL) {
+ size_t const n = IR_VA_START_PARAMETER_NUMBER;
+ ir_type *const frame_type = get_irg_frame_type(current_ir_graph);
+ ir_type *const param_type = get_unknown_type();
+ param_ent = new_parameter_entity(frame_type, n, param_type);
+ current_vararg_entity = param_ent;
+ }
+
+ ir_node *const frame = get_irg_frame(current_ir_graph);
+ dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
+ ir_node *const no_mem = new_NoMem();
+ ir_node *const arg_sel = new_d_simpleSel(dbgi, no_mem, frame, param_ent);
set_value_for_expression(expr->ap, arg_sel);
size_t len;
if (is_type_compound(top_type)) {
- compound_t *compound = top_type->compound.compound;
- entity_t *entry = compound->members.entities;
+ compound_t *const compound = top_type->compound.compound;
+ entity_t *const entry = skip_unnamed_bitfields(compound->members.entities);
top->compound_entry = entry;
top->index = 0;
entity_t *entry = top->compound_entry;
top->index++;
- entry = entry->base.next;
+ entry = skip_unnamed_bitfields(entry->base.next);
top->compound_entry = entry;
if (entry != NULL) {
assert(entry->kind == ENTITY_COMPOUND_MEMBER);
assert(has_array_upper_bound(ent_type, 0));
long n = get_array_upper_bound_int(ent_type, 0);
for (long i = 0; i < n; ++i) {
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
ir_tarval *index_tv = new_tarval_from_long(i, mode_uint);
ir_node *cnst = new_d_Const(dbgi, index_tv);
ir_node *in[1] = { cnst };
/* is it a bitfield type? */
if (is_Primitive_type(ent_type) &&
get_primitive_base_type(ent_type) != NULL) {
- bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
+ bitfield_store_to_firm(dbgi, entity, base_addr, node, false, false);
return;
}
/* is it a bitfield type? */
if (is_Primitive_type(ent_type) &&
get_primitive_base_type(ent_type) != NULL) {
- bitfield_store_to_firm(dbgi, entity, base_addr, node, false);
+ bitfield_store_to_firm(dbgi, entity, base_addr, node, false, false);
return;
}
/* is it a bitfield type? */
if (is_Primitive_type(ent_type) &&
get_primitive_base_type(ent_type) != NULL) {
- bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false);
+ bitfield_store_to_firm(dbgi, entity, base_addr, cnst, false, false);
return;
}
ir_type *irtype;
ir_entity *sub_entity;
if (is_Array_type(type)) {
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
ir_tarval *index_tv = new_tarval_from_long(i, mode_uint);
ir_node *cnst = new_d_Const(dbgi, index_tv);
ir_node *in[1] = { cnst };
set_unreachable_now();
}
+static ir_switch_table *create_switch_table(const switch_statement_t *statement)
+{
+ /* determine number of cases */
+ size_t n_cases = 0;
+ for (case_label_statement_t *l = statement->first_case; l != NULL;
+ l = l->next) {
+ /* default case */
+ if (l->expression == NULL)
+ continue;
+ if (l->is_empty_range)
+ continue;
+ ++n_cases;
+ }
+
+ ir_switch_table *res = ir_new_switch_table(current_ir_graph, n_cases);
+ size_t i = 0;
+ for (case_label_statement_t *l = statement->first_case; l != NULL;
+ l = l->next) {
+ if (l->expression == NULL) {
+ l->pn = pn_Switch_default;
+ continue;
+ }
+ if (l->is_empty_range)
+ continue;
+ ir_tarval *min = fold_constant_to_tarval(l->expression);
+ ir_tarval *max = min;
+ long pn = (long) i+1;
+ if (l->end_range != NULL)
+ max = fold_constant_to_tarval(l->end_range);
+ ir_switch_table_set(res, i++, min, max, pn);
+ l->pn = pn;
+ }
+ return res;
+}
+
static void switch_statement_to_firm(switch_statement_t *statement)
{
ir_node *first_block = NULL;
dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
- ir_node *cond = NULL;
+ ir_node *switch_node = NULL;
if (currently_reachable()) {
ir_node *expression = expression_to_firm(statement->expression);
- cond = new_d_Cond(dbgi, expression);
- first_block = get_cur_block();
+ ir_switch_table *table = create_switch_table(statement);
+ unsigned n_outs = (unsigned)ir_switch_table_get_n_entries(table) + 1;
+
+ switch_node = new_d_Switch(dbgi, expression, n_outs, table);
+ first_block = get_cur_block();
}
set_unreachable_now();
- ir_node *const old_switch_cond = current_switch_cond;
+ ir_node *const old_switch = current_switch;
ir_node *const old_break_label = break_label;
const bool old_saw_default_label = saw_default_label;
saw_default_label = false;
- current_switch_cond = cond;
+ current_switch = switch_node;
break_label = NULL;
- switch_statement_t *const old_switch = current_switch;
- current_switch = statement;
-
- /* determine a free number for the default label */
- unsigned long num_cases = 0;
- long default_proj_nr = 0;
- for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
- if (l->expression == NULL) {
- /* default case */
- continue;
- }
- if (l->last_case >= l->first_case)
- num_cases += l->last_case - l->first_case + 1;
- if (l->last_case > default_proj_nr)
- default_proj_nr = l->last_case;
- }
-
- if (default_proj_nr == LONG_MAX) {
- /* Bad: an overflow will occur, we cannot be sure that the
- * maximum + 1 is a free number. Scan the values a second
- * time to find a free number.
- */
- unsigned char *bits = xmalloc((num_cases + 7) >> 3);
-
- memset(bits, 0, (num_cases + 7) >> 3);
- for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
- if (l->expression == NULL) {
- /* default case */
- continue;
- }
- unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
- if (start < num_cases && l->last_case >= 0) {
- unsigned long end = (unsigned long)l->last_case < num_cases ?
- (unsigned long)l->last_case : num_cases - 1;
- for (unsigned long cns = start; cns <= end; ++cns) {
- bits[cns >> 3] |= (1 << (cns & 7));
- }
- }
- }
- /* We look at the first num_cases constants:
- * Either they are dense, so we took the last (num_cases)
- * one, or they are not dense, so we will find one free
- * there...
- */
- unsigned long i;
- for (i = 0; i < num_cases; ++i)
- if ((bits[i >> 3] & (1 << (i & 7))) == 0)
- break;
-
- free(bits);
- default_proj_nr = i;
- } else {
- ++default_proj_nr;
- }
- statement->default_proj_nr = default_proj_nr;
- /* safety check: cond might already be folded to a Bad */
- if (cond != NULL && is_Cond(cond)) {
- set_Cond_default_proj(cond, default_proj_nr);
- }
statement_to_firm(statement->body);
if (!saw_default_label && first_block != NULL) {
set_cur_block(first_block);
- ir_node *const proj = new_d_Proj(dbgi, cond, mode_X, default_proj_nr);
+ ir_node *proj = new_d_Proj(dbgi, switch_node, mode_X, pn_Switch_default);
add_immBlock_pred(get_break_label(), proj);
}
}
set_cur_block(break_label);
- assert(current_switch_cond == cond);
- current_switch = old_switch;
- current_switch_cond = old_switch_cond;
- break_label = old_break_label;
- saw_default_label = old_saw_default_label;
+ assert(current_switch == switch_node);
+ current_switch = old_switch;
+ break_label = old_break_label;
+ saw_default_label = old_saw_default_label;
}
static void case_label_to_firm(const case_label_statement_t *statement)
if (statement->is_empty_range)
return;
- ir_node *block = new_immBlock();
- /* Fallthrough from previous case */
- jump_if_reachable(block);
+ if (current_switch != NULL) {
+ ir_node *block = new_immBlock();
+ /* Fallthrough from previous case */
+ jump_if_reachable(block);
- if (current_switch_cond != NULL) {
- set_cur_block(get_nodes_block(current_switch_cond));
- dbg_info *const dbgi = get_dbg_info(&statement->base.source_position);
- if (statement->expression != NULL) {
- long pn = statement->first_case;
- long end_pn = statement->last_case;
- assert(pn <= end_pn);
- /* create jumps for all cases in the given range */
- do {
- ir_node *const proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
- add_immBlock_pred(block, proj);
- } while (pn++ < end_pn);
- } else {
+ ir_node *const proj = new_Proj(current_switch, mode_X, statement->pn);
+ add_immBlock_pred(block, proj);
+ if (statement->expression == NULL)
saw_default_label = true;
- ir_node *const proj = new_d_Proj(dbgi, current_switch_cond, mode_X,
- current_switch->default_proj_nr);
- add_immBlock_pred(block, proj);
- }
- }
- mature_immBlock(block);
- set_cur_block(block);
+ mature_immBlock(block);
+ set_cur_block(block);
+ }
statement_to_firm(statement->statement);
}
continue;
}
- if (strcmp(clobber_str, "memory") == 0) {
+ if (streq(clobber_str, "memory")) {
needs_memory = true;
continue;
}
static void handle_decl_modifier_irg(ir_graph_ptr irg,
decl_modifiers_t decl_modifiers)
{
- if (decl_modifiers & DM_RETURNS_TWICE) {
- /* TRUE if the declaration includes __attribute__((returns_twice)) */
- add_irg_additional_properties(irg, mtp_property_returns_twice);
- }
- if (decl_modifiers & DM_NORETURN) {
- /* TRUE if the declaration includes the Microsoft
- __declspec(noreturn) specifier. */
- add_irg_additional_properties(irg, mtp_property_noreturn);
- }
- if (decl_modifiers & DM_NOTHROW) {
- /* TRUE if the declaration includes the Microsoft
- __declspec(nothrow) specifier. */
- add_irg_additional_properties(irg, mtp_property_nothrow);
- }
if (decl_modifiers & DM_NAKED) {
/* TRUE if the declaration includes the Microsoft
__declspec(naked) specifier. */
if (entity->function.statement == NULL)
return;
- if (is_main(entity) && enable_main_collect2_hack) {
- prepare_main_collect2(entity);
- }
-
inner_functions = NULL;
current_trampolines = NULL;
ir_graph *old_current_function = current_function;
current_function = irg;
+ ir_entity *const old_current_vararg_entity = current_vararg_entity;
+ current_vararg_entity = NULL;
+
set_irg_fp_model(irg, firm_fp_model);
tarval_enable_fp_ops(1);
set_irn_dbg_info(get_irg_start_block(irg),
set_type_alignment_bytes(frame_type, align_all);
irg_verify(irg, VERIFY_ENFORCE_SSA);
- current_function = old_current_function;
+ current_vararg_entity = old_current_vararg_entity;
+ current_function = old_current_function;
if (current_trampolines != NULL) {
DEL_ARR_F(current_trampolines);
/* just to be sure */
continue_label = NULL;
break_label = NULL;
- current_switch_cond = NULL;
+ current_switch = NULL;
current_translation_unit = unit;
init_ir_types();
projects / cparser / blobdiff