#include <assert.h>
#include <string.h>
#include <stdbool.h>
+#include <unistd.h>
#include <limits.h>
#include <libfirm/firm.h>
static ir_type *ir_type_char;
static ir_type *ir_type_const_char;
static ir_type *ir_type_wchar_t;
-static ir_type *ir_type_void;
-static ir_type *ir_type_int;
/* architecture specific floating point arithmetic mode (if any) */
static ir_mode *mode_float_arithmetic;
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;
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)
return new_r_Unknown(irg, mode);
}
-static const char *dbg_retrieve(const dbg_info *dbg, unsigned *line)
+static src_loc_t dbg_retrieve(const dbg_info *dbg)
{
- const source_position_t *pos = (const source_position_t*) dbg;
- if (pos == NULL)
- return NULL;
- if (line != NULL)
- *line = pos->lineno;
- return pos->input_name;
+ source_position_t const *const pos = (source_position_t const*)dbg;
+ if (pos) {
+ return (src_loc_t){ pos->input_name, pos->lineno, pos->colno };
+ } else {
+ return (src_loc_t){ NULL, 0, 0 };
+ }
}
static dbg_info *get_dbg_info(const source_position_t *pos)
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;
int n_parameters = count_parameters(function_type)
+ (for_closure ? 1 : 0);
- int n_results = return_type == type_void ? 0 : 1;
+ int n_results = is_type_void(return_type) ? 0 : 1;
type_dbg_info *dbgi = get_type_dbg_info_((const type_t*) function_type);
ir_type *irtype = new_d_type_method(n_parameters, n_results, dbgi);
- if (return_type != type_void) {
+ if (!is_type_void(return_type)) {
ir_type *restype = get_ir_type(return_type);
set_method_res_type(irtype, 0, restype);
}
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;
}
}
}
-#define INVALID_TYPE ((ir_type_ptr)-1)
-
enum {
COMPOUND_IS_STRUCT = false,
COMPOUND_IS_UNION = true
return irtype;
}
+static ir_tarval *fold_constant_to_tarval(expression_t const *);
+
static void determine_enum_values(enum_type_t *const type)
{
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);
- bool constant_folding_old = constant_folding;
- constant_folding = true;
-
enum_t *enume = type->enume;
entity_t *entry = enume->base.next;
for (; entry != NULL; entry = entry->base.next) {
expression_t *const init = entry->enum_value.value;
if (init != NULL) {
- ir_node *const cnst = expression_to_firm(init);
- if (!is_Const(cnst)) {
- panic("couldn't fold constant");
- }
- tv_next = get_Const_tarval(cnst);
+ tv_next = fold_constant_to_tarval(init);
}
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)
type = skip_typeref(type);
if (type->base.firm_type != NULL) {
- assert(type->base.firm_type != INVALID_TYPE);
return type->base.firm_type;
}
type = skip_typeref(type);
if (type->base.firm_type != NULL) {
- assert(type->base.firm_type != INVALID_TYPE);
return type->base.firm_type;
}
ir_type *firm_type = NULL;
switch (type->kind) {
- case TYPE_ERROR:
- /* Happens while constant folding, when there was an error */
- return create_atomic_type(ATOMIC_TYPE_VOID, NULL);
-
case TYPE_ATOMIC:
firm_type = create_atomic_type(type->atomic.akind, type);
break;
firm_type = create_enum_type(&type->enumt);
break;
+ case TYPE_ERROR:
case TYPE_TYPEOF:
case TYPE_TYPEDEF:
break;
static ir_mode *get_ir_mode_storage(type_t *type)
{
- ir_type *irtype = get_ir_type(type);
+ type = skip_typeref(type);
- /* firm doesn't report a mode for arrays somehow... */
- if (is_Array_type(irtype)) {
+ /* Firm doesn't report a mode for arrays and structs/unions. */
+ if (!is_type_scalar(type)) {
return mode_P_data;
}
- ir_mode *mode = get_type_mode(irtype);
+ ir_type *const irtype = get_ir_type(type);
+ ir_mode *const mode = get_type_mode(irtype);
assert(mode != NULL);
return mode;
}
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 */
continue;
type_t *return_type = skip_typeref(function_type->return_type);
- int n_res = return_type != type_void ? 1 : 0;
+ int n_res = is_type_void(return_type) ? 0 : 1;
if (n_res != rts_data[i].n_res)
continue;
return new_d_SymConst(dbgi, mode_P, sym, symconst_addr_ent);
}
+static ir_node *create_Const_from_bool(ir_mode *const mode, bool const v)
+{
+ return new_Const((v ? get_mode_one : get_mode_null)(mode));
+}
+
+static ir_node *create_conv_from_b(dbg_info *dbgi, ir_node *value,
+ ir_mode *dest_mode)
+{
+ if (is_Const(value)) {
+ return create_Const_from_bool(dest_mode, !is_Const_null(value));
+ }
+
+ 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);
if (dest_mode == mode_b) {
ir_node *zero = new_Const(get_mode_null(value_mode));
- ir_node *cmp = new_d_Cmp(dbgi, value, zero, ir_relation_less_greater);
+ ir_node *cmp = new_d_Cmp(dbgi, value, zero, ir_relation_unordered_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);
}
-static ir_node *create_Const_from_bool(ir_mode *const mode, bool const v)
-{
- return new_Const((v ? get_mode_one : get_mode_null)(mode));
-}
-
/**
* Creates a SymConst node representing a wide string literal.
*
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);
}
set_cur_block(old);
}
-static ir_node *reference_expression_enum_value_to_firm(
- const reference_expression_t *ref)
+static ir_node *enum_constant_to_firm(reference_expression_t const *const ref)
{
entity_t *entity = ref->entity;
if (entity->enum_value.tv == NULL) {
ir_node *size = expression_to_firm(argument);
ir_node *store = get_store();
- ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type,
+ ir_node *alloca = new_d_Alloc(dbgi, store, size, get_unknown_type(),
stack_alloc);
ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M);
set_store(proj_m);
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);
type_t *arg_type = skip_typeref(expression->base.type);
if (!is_type_compound(arg_type)) {
- ir_mode *mode = get_ir_mode_storage(expression->base.type);
- arg_node = create_conv(dbgi, arg_node, mode);
- arg_node = do_strict_conv(dbgi, arg_node);
+ ir_mode *const mode = get_ir_mode_storage(arg_type);
+ arg_node = create_conv(dbgi, arg_node, mode);
+ arg_node = do_strict_conv(dbgi, arg_node);
}
in[n] = arg_node;
set_store(mem);
}
- if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
+ if (!is_type_void(return_type)) {
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);
}
set_store(mem);
}
- if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
- ir_node *resproj = new_Proj(node, mode_T, pn_Call_T_result);
-
- if (is_type_scalar(return_type)) {
- ir_mode *mode = get_ir_mode_storage(return_type);
- result = new_Proj(resproj, mode, 0);
- ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
- result = create_conv(NULL, result, mode_arith);
- } else {
- ir_mode *mode = mode_P_data;
- result = new_Proj(resproj, mode, 0);
- }
+ if (!is_type_void(return_type)) {
+ ir_node *const resproj = new_Proj(node, mode_T, pn_Call_T_result);
+ ir_mode *const mode = get_ir_mode_storage(return_type);
+ result = new_Proj(resproj, mode, 0);
+ ir_mode *const mode_arith = get_ir_mode_arithmetic(return_type);
+ result = create_conv(NULL, result, mode_arith);
}
}
return result;
}
-static void statement_to_firm(statement_t *statement);
+static ir_node *statement_to_firm(statement_t *statement);
static ir_node *compound_statement_to_firm(compound_statement_t *compound);
static ir_node *expression_to_addr(const expression_t *expression);
{
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);
ir_type *entity_type = get_entity_type(entity);
ir_type *base_type = get_primitive_base_type(entity_type);
ir_mode *mode = get_type_mode(base_type);
+ ir_mode *mode_uint = atomic_modes[ATOMIC_TYPE_UINT];
value = create_conv(dbgi, value, mode);
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
type_t *from_type, type_t *type)
{
type = skip_typeref(type);
- if (type == type_void) {
+ if (is_type_void(type)) {
/* make sure firm type is constructed */
(void) get_ir_type(type);
return NULL;
if (from_var != NULL) {
ir_node *const addr = create_symconst(dbgi, from_var->v.entity);
ir_node *const base = deref_address(dbgi, from_var->base.type, addr);
- value_node = new_d_Add(dbgi, value_node, base, get_ir_mode_storage(from_type));
+ value_node = new_d_Add(dbgi, value_node, base, mode);
}
if (to_var != NULL) {
ir_node *const addr = create_symconst(dbgi, to_var->v.entity);
dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
type_t *type = skip_typeref(expression->base.type);
- if (expression->base.kind == EXPR_UNARY_TAKE_ADDRESS)
- return expression_to_addr(expression->value);
-
const expression_t *value = expression->value;
switch(expression->base.kind) {
+ case EXPR_UNARY_TAKE_ADDRESS:
+ return expression_to_addr(value);
+
case EXPR_UNARY_NEGATE: {
ir_node *value_node = expression_to_firm(value);
ir_mode *mode = get_ir_mode_arithmetic(type);
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:
static void create_local_initializer(initializer_t *initializer, dbg_info *dbgi,
ir_entity *entity, type_t *type);
+static ir_initializer_t *create_ir_initializer(
+ const initializer_t *initializer, type_t *type);
-static ir_node *compound_literal_to_firm(
- const compound_literal_expression_t *expression)
+static ir_entity *create_initializer_entity(dbg_info *dbgi,
+ initializer_t *initializer,
+ type_t *type)
{
- type_t *type = expression->type;
+ /* create the ir_initializer */
+ ir_graph *const old_current_ir_graph = current_ir_graph;
+ current_ir_graph = get_const_code_irg();
- /* create an entity on the stack */
- ir_type *frame_type = get_irg_frame_type(current_ir_graph);
+ ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
+
+ assert(current_ir_graph == get_const_code_irg());
+ current_ir_graph = old_current_ir_graph;
- ident *const id = id_unique("CompLit.%u");
- ir_type *const irtype = get_ir_type(type);
- dbg_info *const dbgi = get_dbg_info(&expression->base.source_position);
- ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
+ ident *const id = id_unique("initializer.%u");
+ ir_type *const irtype = get_ir_type(type);
+ ir_type *const global_type = get_glob_type();
+ ir_entity *const entity = new_d_entity(global_type, id, irtype, dbgi);
set_entity_ld_ident(entity, id);
+ set_entity_visibility(entity, ir_visibility_private);
+ add_entity_linkage(entity, IR_LINKAGE_CONSTANT);
+ set_entity_initializer(entity, irinitializer);
+ return entity;
+}
- /* create initialisation code */
+static ir_node *compound_literal_addr(compound_literal_expression_t const *const expression)
+{
+ dbg_info *dbgi = get_dbg_info(&expression->base.source_position);
+ type_t *type = expression->type;
initializer_t *initializer = expression->initializer;
- create_local_initializer(initializer, dbgi, entity, type);
- /* create a sel for the compound literal address */
- ir_node *frame = get_irg_frame(current_ir_graph);
- ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
- return sel;
+ if (is_constant_initializer(initializer) == EXPR_CLASS_CONSTANT) {
+ ir_entity *entity = create_initializer_entity(dbgi, initializer, type);
+ return create_symconst(dbgi, entity);
+ } else {
+ /* create an entity on the stack */
+ ident *const id = id_unique("CompLit.%u");
+ ir_type *const irtype = get_ir_type(type);
+ ir_type *frame_type = get_irg_frame_type(current_ir_graph);
+
+ ir_entity *const entity = new_d_entity(frame_type, id, irtype, dbgi);
+ set_entity_ld_ident(entity, id);
+
+ /* create initialisation code */
+ create_local_initializer(initializer, dbgi, entity, type);
+
+ /* create a sel for the compound literal address */
+ ir_node *frame = get_irg_frame(current_ir_graph);
+ ir_node *sel = new_d_simpleSel(dbgi, new_NoMem(), frame, entity);
+ return sel;
+ }
+}
+
+static ir_node *compound_literal_to_firm(compound_literal_expression_t const* const expr)
+{
+ dbg_info *const dbgi = get_dbg_info(&expr->base.source_position);
+ type_t *const type = expr->type;
+ ir_node *const addr = compound_literal_addr(expr);
+ return deref_address(dbgi, type, addr);
}
/**
&& expression->tp_expression != NULL) {
expression_to_firm(expression->tp_expression);
}
- /* strange gnu extensions: sizeof(function) == 1 */
- if (is_type_function(type)) {
- ir_mode *mode = get_ir_mode_storage(type_size_t);
- return new_Const(get_mode_one(mode));
- }
return get_type_size_node(type);
}
static unsigned get_cparser_entity_alignment(const entity_t *entity)
{
switch(entity->kind) {
- DECLARATION_KIND_CASES
+ case DECLARATION_KIND_CASES:
return entity->declaration.alignment;
case ENTITY_STRUCT:
case ENTITY_UNION:
static ir_tarval *fold_constant_to_tarval(const expression_t *expression)
{
- assert(is_type_valid(skip_typeref(expression->base.type)));
+ assert(is_constant_expression(expression) == EXPR_CLASS_CONSTANT);
bool constant_folding_old = constant_folding;
constant_folding = true;
+ int old_optimize = get_optimize();
+ int old_constant_folding = get_opt_constant_folding();
+ set_optimize(1);
+ set_opt_constant_folding(1);
init_ir_types();
- assert(is_constant_expression(expression) == EXPR_CLASS_CONSTANT);
-
ir_graph *old_current_ir_graph = current_ir_graph;
current_ir_graph = get_const_code_irg();
ir_node *cnst = expression_to_firm(expression);
current_ir_graph = old_current_ir_graph;
+ set_optimize(old_optimize);
+ set_opt_constant_folding(old_constant_folding);
if (!is_Const(cnst)) {
panic("couldn't fold constant");
/* this function is only used in parser.c, but it relies on libfirm functionality */
bool constant_is_negative(const expression_t *expression)
{
- assert(is_constant_expression(expression) == EXPR_CLASS_CONSTANT);
ir_tarval *tv = fold_constant_to_tarval(expression);
return tarval_is_negative(tv);
}
long fold_constant_to_int(const expression_t *expression)
{
- if (expression->kind == EXPR_ERROR)
- return 0;
-
ir_tarval *tv = fold_constant_to_tarval(expression);
if (!tarval_is_long(tv)) {
panic("result of constant folding is not integer");
bool fold_constant_to_bool(const expression_t *expression)
{
- if (expression->kind == EXPR_ERROR)
- return false;
ir_tarval *tv = fold_constant_to_tarval(expression);
return !tarval_is_null(tv);
}
ir_node *const in[2] = { true_val, false_val };
type_t *const type = skip_typeref(expression->base.type);
- ir_mode *mode;
- if (is_type_compound(type)) {
- mode = mode_P;
- } else {
- mode = get_ir_mode_arithmetic(type);
- }
+ ir_mode *const mode = get_ir_mode_arithmetic(type);
ir_node *const val = new_d_Phi(dbgi, lengthof(in), in, mode);
return val;
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);
}
case EXPR_CALL:
return call_expression_to_firm(&expression->call);
case EXPR_COMPOUND_LITERAL:
- return compound_literal_to_firm(&expression->compound_literal);
+ return compound_literal_addr(&expression->compound_literal);
case EXPR_REFERENCE:
return reference_addr(&expression->reference);
case EXPR_SELECT:
return new_d_SymConst(dbgi, mode_P_code, value, symconst_addr_ent);
}
-static ir_node *error_to_firm(const expression_t *expression)
-{
- ir_mode *mode = get_ir_mode_arithmetic(expression->base.type);
- return new_Bad(mode);
-}
-
/**
* creates firm nodes for an expression. The difference between this function
* and expression_to_firm is, that this version might produce mode_b nodes
* instead of mode_Is.
*/
-static ir_node *_expression_to_firm(const expression_t *expression)
+static ir_node *_expression_to_firm(expression_t const *const expr)
{
#ifndef NDEBUG
if (!constant_folding) {
- assert(!expression->base.transformed);
- ((expression_t*) expression)->base.transformed = true;
+ assert(!expr->base.transformed);
+ ((expression_t*)expr)->base.transformed = true;
}
#endif
- switch (expression->kind) {
- EXPR_LITERAL_CASES
- return literal_to_firm(&expression->literal);
- case EXPR_STRING_LITERAL:
- return string_to_firm(&expression->base.source_position, "str.%u",
- &expression->literal.value);
- case EXPR_WIDE_STRING_LITERAL:
- return wide_string_literal_to_firm(&expression->string_literal);
- case EXPR_REFERENCE:
- return reference_expression_to_firm(&expression->reference);
- case EXPR_REFERENCE_ENUM_VALUE:
- return reference_expression_enum_value_to_firm(&expression->reference);
- case EXPR_CALL:
- return call_expression_to_firm(&expression->call);
- EXPR_UNARY_CASES
- return unary_expression_to_firm(&expression->unary);
- EXPR_BINARY_CASES
- return binary_expression_to_firm(&expression->binary);
- case EXPR_ARRAY_ACCESS:
- return array_access_to_firm(&expression->array_access);
- case EXPR_SIZEOF:
- return sizeof_to_firm(&expression->typeprop);
- case EXPR_ALIGNOF:
- return alignof_to_firm(&expression->typeprop);
- case EXPR_CONDITIONAL:
- return conditional_to_firm(&expression->conditional);
- case EXPR_SELECT:
- return select_to_firm(&expression->select);
- case EXPR_CLASSIFY_TYPE:
- return classify_type_to_firm(&expression->classify_type);
- case EXPR_FUNCNAME:
- return function_name_to_firm(&expression->funcname);
- case EXPR_STATEMENT:
- return statement_expression_to_firm(&expression->statement);
- case EXPR_VA_START:
- return va_start_expression_to_firm(&expression->va_starte);
- case EXPR_VA_ARG:
- return va_arg_expression_to_firm(&expression->va_arge);
- case EXPR_VA_COPY:
- return va_copy_expression_to_firm(&expression->va_copye);
- case EXPR_BUILTIN_CONSTANT_P:
- return builtin_constant_to_firm(&expression->builtin_constant);
- case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
- return builtin_types_compatible_to_firm(&expression->builtin_types_compatible);
- case EXPR_OFFSETOF:
- return offsetof_to_firm(&expression->offsetofe);
- case EXPR_COMPOUND_LITERAL:
- return compound_literal_to_firm(&expression->compound_literal);
- case EXPR_LABEL_ADDRESS:
- return label_address_to_firm(&expression->label_address);
-
- case EXPR_ERROR:
- return error_to_firm(expression);
+ switch (expr->kind) {
+ case EXPR_ALIGNOF: return alignof_to_firm( &expr->typeprop);
+ case EXPR_ARRAY_ACCESS: return array_access_to_firm( &expr->array_access);
+ case EXPR_BINARY_CASES: return binary_expression_to_firm( &expr->binary);
+ case EXPR_BUILTIN_CONSTANT_P: return builtin_constant_to_firm( &expr->builtin_constant);
+ case EXPR_BUILTIN_TYPES_COMPATIBLE_P: return builtin_types_compatible_to_firm(&expr->builtin_types_compatible);
+ case EXPR_CALL: return call_expression_to_firm( &expr->call);
+ case EXPR_CLASSIFY_TYPE: return classify_type_to_firm( &expr->classify_type);
+ case EXPR_COMPOUND_LITERAL: return compound_literal_to_firm( &expr->compound_literal);
+ case EXPR_CONDITIONAL: return conditional_to_firm( &expr->conditional);
+ case EXPR_FUNCNAME: return function_name_to_firm( &expr->funcname);
+ case EXPR_LABEL_ADDRESS: return label_address_to_firm( &expr->label_address);
+ case EXPR_LITERAL_CASES: return literal_to_firm( &expr->literal);
+ case EXPR_OFFSETOF: return offsetof_to_firm( &expr->offsetofe);
+ case EXPR_REFERENCE: return reference_expression_to_firm( &expr->reference);
+ case EXPR_ENUM_CONSTANT: return enum_constant_to_firm( &expr->reference);
+ case EXPR_SELECT: return select_to_firm( &expr->select);
+ case EXPR_SIZEOF: return sizeof_to_firm( &expr->typeprop);
+ case EXPR_STATEMENT: return statement_expression_to_firm( &expr->statement);
+ case EXPR_UNARY_CASES: return unary_expression_to_firm( &expr->unary);
+ case EXPR_VA_ARG: return va_arg_expression_to_firm( &expr->va_arge);
+ case EXPR_VA_COPY: return va_copy_expression_to_firm( &expr->va_copye);
+ case EXPR_VA_START: return va_start_expression_to_firm( &expr->va_starte);
+ case EXPR_WIDE_STRING_LITERAL: return wide_string_literal_to_firm( &expr->string_literal);
+
+ case EXPR_STRING_LITERAL: return string_to_firm(&expr->base.source_position, "str.%u", &expr->literal.value);
+
+ case EXPR_ERROR: break;
}
panic("invalid expression found");
}
}
-static ir_initializer_t *create_ir_initializer(
- const initializer_t *initializer, type_t *type);
-
static ir_initializer_t *create_ir_initializer_value(
const initializer_value_t *initializer)
{
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 };
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 };
return;
}
- /* create the ir_initializer */
- ir_graph *const old_current_ir_graph = current_ir_graph;
- current_ir_graph = get_const_code_irg();
-
- ir_initializer_t *irinitializer = create_ir_initializer(initializer, type);
-
- assert(current_ir_graph == get_const_code_irg());
- current_ir_graph = old_current_ir_graph;
-
/* create a "template" entity which is copied to the entity on the stack */
- ident *const id = id_unique("initializer.%u");
- ir_type *const irtype = get_ir_type(type);
- ir_type *const global_type = get_glob_type();
- ir_entity *const init_entity = new_d_entity(global_type, id, irtype, dbgi);
- set_entity_ld_ident(init_entity, id);
-
- set_entity_visibility(init_entity, ir_visibility_private);
- add_entity_linkage(init_entity, IR_LINKAGE_CONSTANT);
-
- set_entity_initializer(init_entity, irinitializer);
-
+ ir_entity *const init_entity
+ = create_initializer_entity(dbgi, initializer, type);
ir_node *const src_addr = create_symconst(dbgi, init_entity);
+ ir_type *const irtype = get_ir_type(type);
ir_node *const copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype);
ir_node *const copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M);
type_qualifiers_t tq = get_type_qualifier(type, true);
if (initializer->kind == INITIALIZER_VALUE) {
- initializer_value_t *initializer_value = &initializer->value;
- dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
-
- ir_node *value = expression_to_firm(initializer_value->value);
+ expression_t * value = initializer->value.value;
+ type_t *const init_type = skip_typeref(value->base.type);
+
+ if (!is_type_scalar(init_type)) {
+ /* skip convs */
+ while (value->kind == EXPR_UNARY_CAST)
+ value = value->unary.value;
+
+ if (value->kind != EXPR_COMPOUND_LITERAL)
+ panic("expected non-scalar initializer to be a compound literal");
+ initializer = value->compound_literal.initializer;
+ goto have_initializer;
+ }
- type_t *init_type = initializer_value->value->base.type;
- ir_mode *mode = get_ir_mode_storage(init_type);
- value = create_conv(dbgi, value, mode);
- value = do_strict_conv(dbgi, value);
+ ir_node * node = expression_to_firm(value);
+ dbg_info *const dbgi = get_dbg_info(&entity->base.source_position);
+ ir_mode *const mode = get_ir_mode_storage(init_type);
+ node = create_conv(dbgi, node, mode);
+ node = do_strict_conv(dbgi, node);
if (declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE) {
- set_value(entity->variable.v.value_number, value);
+ set_value(entity->variable.v.value_number, node);
} else {
assert(declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
&& get_entity_owner(irentity) != get_tls_type()) {
add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
}
- set_atomic_ent_value(irentity, value);
+ set_atomic_ent_value(irentity, node);
}
} else {
+have_initializer:
assert(declaration_kind == DECLARATION_KIND_LOCAL_VARIABLE_ENTITY ||
declaration_kind == DECLARATION_KIND_GLOBAL_VARIABLE);
-static void return_statement_to_firm(return_statement_t *statement)
+static ir_node *return_statement_to_firm(return_statement_t *statement)
{
if (!currently_reachable())
- return;
+ return NULL;
- dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
- type_t *type = current_function_entity->declaration.type;
- ir_type *func_irtype = get_ir_type(type);
-
- ir_node *in[1];
- int in_len;
- if (get_method_n_ress(func_irtype) > 0) {
- ir_type *res_type = get_method_res_type(func_irtype, 0);
-
- if (statement->value != NULL) {
- ir_node *node = expression_to_firm(statement->value);
- if (!is_compound_type(res_type)) {
- type_t *ret_value_type = statement->value->base.type;
- ir_mode *mode = get_ir_mode_storage(ret_value_type);
- node = create_conv(dbgi, node, mode);
- node = do_strict_conv(dbgi, node);
- }
- in[0] = node;
+ dbg_info *const dbgi = get_dbg_info(&statement->base.source_position);
+ type_t *const type = skip_typeref(current_function_entity->declaration.type->function.return_type);
+ ir_node * res = statement->value ? expression_to_firm(statement->value) : NULL;
+
+ int in_len;
+ if (!is_type_void(type)) {
+ ir_mode *const mode = get_ir_mode_storage(type);
+ if (res) {
+ res = create_conv(dbgi, res, mode);
+ res = do_strict_conv(dbgi, res);
} else {
- ir_mode *mode;
- if (is_compound_type(res_type)) {
- mode = mode_P_data;
- } else {
- mode = get_type_mode(res_type);
- }
- in[0] = new_Unknown(mode);
+ res = new_Unknown(mode);
}
in_len = 1;
} else {
- /* build return_value for its side effects */
- if (statement->value != NULL) {
- expression_to_firm(statement->value);
- }
in_len = 0;
}
- ir_node *store = get_store();
- ir_node *ret = new_d_Return(dbgi, store, in_len, in);
+ ir_node *const in[1] = { res };
+ ir_node *const store = get_store();
+ ir_node *const ret = new_d_Return(dbgi, store, in_len, in);
ir_node *end_block = get_irg_end_block(current_ir_graph);
add_immBlock_pred(end_block, ret);
set_unreachable_now();
+ return NULL;
}
static ir_node *expression_statement_to_firm(expression_statement_t *statement)
ir_node *result = NULL;
statement_t *statement = compound->statements;
for ( ; statement != NULL; statement = statement->base.next) {
- if (statement->base.next == NULL
- && statement->kind == STATEMENT_EXPRESSION) {
- result = expression_statement_to_firm(
- &statement->expression);
- break;
- }
- statement_to_firm(statement);
+ result = statement_to_firm(statement);
}
return result;
panic("invalid declaration kind");
}
-static void declaration_statement_to_firm(declaration_statement_t *statement)
+static ir_node *declaration_statement_to_firm(declaration_statement_t *statement)
{
entity_t *entity = statement->declarations_begin;
if (entity == NULL)
- return;
+ return NULL;
entity_t *const last = statement->declarations_end;
for ( ;; entity = entity->base.next) {
if (entity == last)
break;
}
+
+ return NULL;
}
-static void if_statement_to_firm(if_statement_t *statement)
+static ir_node *if_statement_to_firm(if_statement_t *statement)
{
/* Create the condition. */
ir_node *true_block = NULL;
false_block = new_immBlock();
create_condition_evaluation(statement->condition, true_block, false_block);
mature_immBlock(true_block);
+ mature_immBlock(false_block);
}
- /* Create the false statement.
- * Handle false before true, so if no false statement is present, then the
- * empty false block is reused as fallthrough block. */
- ir_node *fallthrough_block = NULL;
+ /* Create the true statement. */
+ set_cur_block(true_block);
+ statement_to_firm(statement->true_statement);
+ ir_node *fallthrough_block = get_cur_block();
+
+ /* Create the false statement. */
+ set_cur_block(false_block);
if (statement->false_statement != NULL) {
- if (false_block != NULL) {
- mature_immBlock(false_block);
- }
- set_cur_block(false_block);
statement_to_firm(statement->false_statement);
- if (currently_reachable()) {
- fallthrough_block = new_immBlock();
- add_immBlock_pred(fallthrough_block, new_Jmp());
- }
- } else {
- fallthrough_block = false_block;
}
- /* Create the true statement. */
- set_cur_block(true_block);
- statement_to_firm(statement->true_statement);
- if (currently_reachable()) {
- if (fallthrough_block == NULL) {
- fallthrough_block = new_immBlock();
+ /* Handle the block after the if-statement. Minor simplification and
+ * optimisation: Reuse the false/true block as fallthrough block, if the
+ * true/false statement does not pass control to the fallthrough block, e.g.
+ * in the typical if (x) return; pattern. */
+ if (fallthrough_block) {
+ if (currently_reachable()) {
+ ir_node *const t_jump = new_r_Jmp(fallthrough_block);
+ ir_node *const f_jump = new_Jmp();
+ ir_node *const in[] = { t_jump, f_jump };
+ fallthrough_block = new_Block(2, in);
}
- add_immBlock_pred(fallthrough_block, new_Jmp());
+ set_cur_block(fallthrough_block);
}
- /* Handle the block after the if-statement. */
- if (fallthrough_block != NULL) {
- mature_immBlock(fallthrough_block);
- }
- set_cur_block(fallthrough_block);
+ return NULL;
}
-/* Create a jump node which jumps into target_block, if the current block is
- * reachable. */
-static void jump_if_reachable(ir_node *const target_block)
+/**
+ * Add an unconditional jump to the target block. If the source block is not
+ * reachable, then a Bad predecessor is created to prevent Phi-less unreachable
+ * loops. This is necessary if the jump potentially enters a loop.
+ */
+static void jump_to(ir_node *const target_block)
{
ir_node *const pred = currently_reachable() ? new_Jmp() : new_Bad(mode_X);
add_immBlock_pred(target_block, pred);
}
-static void while_statement_to_firm(while_statement_t *statement)
+/**
+ * Add an unconditional jump to the target block, if the current block is
+ * reachable and do nothing otherwise. This is only valid if the jump does not
+ * enter a loop (a back edge is ok).
+ */
+static void jump_if_reachable(ir_node *const target_block)
+{
+ if (currently_reachable())
+ add_immBlock_pred(target_block, new_Jmp());
+}
+
+static ir_node *while_statement_to_firm(while_statement_t *statement)
{
/* Create the header block */
ir_node *const header_block = new_immBlock();
- jump_if_reachable(header_block);
+ jump_to(header_block);
/* Create the condition. */
ir_node * body_block;
assert(continue_label == header_block);
continue_label = old_continue_label;
break_label = old_break_label;
+ return NULL;
}
static ir_node *get_break_label(void)
return break_label;
}
-static void do_while_statement_to_firm(do_while_statement_t *statement)
+static ir_node *do_while_statement_to_firm(do_while_statement_t *statement)
{
/* create the header block */
ir_node *header_block = new_immBlock();
/* the loop body */
ir_node *body_block = new_immBlock();
- jump_if_reachable(body_block);
+ jump_to(body_block);
ir_node *old_continue_label = continue_label;
ir_node *old_break_label = break_label;
mature_immBlock(false_block);
set_cur_block(false_block);
+ return NULL;
}
-static void for_statement_to_firm(for_statement_t *statement)
+static ir_node *for_statement_to_firm(for_statement_t *statement)
{
/* create declarations */
entity_t *entity = statement->scope.entities;
/* Create the header block */
ir_node *const header_block = new_immBlock();
- jump_if_reachable(header_block);
+ jump_to(header_block);
/* Create the condition. */
ir_node *body_block;
assert(continue_label == step_block);
continue_label = old_continue_label;
break_label = old_break_label;
+ return NULL;
}
-static void create_jump_statement(const statement_t *statement,
- ir_node *target_block)
+static ir_node *create_jump_statement(const statement_t *statement, ir_node *target_block)
{
if (!currently_reachable())
- return;
+ return NULL;
dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
ir_node *jump = new_d_Jmp(dbgi);
add_immBlock_pred(target_block, jump);
set_unreachable_now();
+ return NULL;
}
-static void switch_statement_to_firm(switch_statement_t *statement)
+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 ir_node *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);
}
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);
- jump_if_reachable(get_break_label());
+ if (currently_reachable()) {
+ add_immBlock_pred(get_break_label(), new_Jmp());
+ }
- 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);
+ if (!saw_default_label && switch_node) {
+ 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;
+ return NULL;
}
-static void case_label_to_firm(const case_label_statement_t *statement)
+static ir_node *case_label_to_firm(const case_label_statement_t *statement)
{
if (statement->is_empty_range)
- return;
+ return 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 {
+ if (current_switch != NULL) {
+ ir_node *block = new_immBlock();
+ /* Fallthrough from previous case */
+ jump_if_reachable(block);
+
+ 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);
+ return statement_to_firm(statement->statement);
}
-static void label_to_firm(const label_statement_t *statement)
+static ir_node *label_to_firm(const label_statement_t *statement)
{
ir_node *block = get_label_block(statement->label);
- jump_if_reachable(block);
+ jump_to(block);
set_cur_block(block);
keep_alive(block);
keep_all_memory(block);
- statement_to_firm(statement->statement);
+ return statement_to_firm(statement->statement);
}
-static void goto_to_firm(const goto_statement_t *statement)
+static ir_node *computed_goto_to_firm(computed_goto_statement_t const *const statement)
{
if (!currently_reachable())
- return;
+ return NULL;
- if (statement->expression) {
- ir_node *irn = expression_to_firm(statement->expression);
- dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
- ir_node *ijmp = new_d_IJmp(dbgi, irn);
+ ir_node *const irn = expression_to_firm(statement->expression);
+ dbg_info *const dbgi = get_dbg_info(&statement->base.source_position);
+ ir_node *const ijmp = new_d_IJmp(dbgi, irn);
+
+ set_irn_link(ijmp, ijmp_list);
+ ijmp_list = ijmp;
- set_irn_link(ijmp, ijmp_list);
- ijmp_list = ijmp;
- } else {
- ir_node *block = get_label_block(statement->label);
- ir_node *jmp = new_Jmp();
- add_immBlock_pred(block, jmp);
- }
set_unreachable_now();
+ return NULL;
}
-static void asm_statement_to_firm(const asm_statement_t *statement)
+static ir_node *asm_statement_to_firm(const asm_statement_t *statement)
{
bool needs_memory = false;
ir_asm_constraint constraint;
constraint.pos = pos;
constraint.constraint = new_id_from_str(constraints);
- constraint.mode = NULL;
+ constraint.mode = mode_M;
tmp_in_constraints[in_size] = constraint;
ins[in_size] = expression_to_addr(expr);
set_value_for_expression_addr(out_expr, proj, addr);
}
+
+ return NULL;
}
-static void ms_try_statement_to_firm(ms_try_statement_t *statement)
+static ir_node *ms_try_statement_to_firm(ms_try_statement_t *statement)
{
statement_to_firm(statement->try_statement);
source_position_t const *const pos = &statement->base.source_position;
warningf(WARN_OTHER, pos, "structured exception handling ignored");
+ return NULL;
}
-static void leave_statement_to_firm(leave_statement_t *statement)
+static ir_node *leave_statement_to_firm(leave_statement_t *statement)
{
errorf(&statement->base.source_position, "__leave not supported yet");
+ return NULL;
}
/**
* Transform a statement.
*/
-static void statement_to_firm(statement_t *statement)
+static ir_node *statement_to_firm(statement_t *const stmt)
{
#ifndef NDEBUG
- assert(!statement->base.transformed);
- statement->base.transformed = true;
+ assert(!stmt->base.transformed);
+ stmt->base.transformed = true;
#endif
- switch (statement->kind) {
- case STATEMENT_ERROR:
- panic("error statement found");
- case STATEMENT_EMPTY:
- /* nothing */
- return;
- case STATEMENT_COMPOUND:
- compound_statement_to_firm(&statement->compound);
- return;
- case STATEMENT_RETURN:
- return_statement_to_firm(&statement->returns);
- return;
- case STATEMENT_EXPRESSION:
- expression_statement_to_firm(&statement->expression);
- return;
- case STATEMENT_IF:
- if_statement_to_firm(&statement->ifs);
- return;
- case STATEMENT_WHILE:
- while_statement_to_firm(&statement->whiles);
- return;
- case STATEMENT_DO_WHILE:
- do_while_statement_to_firm(&statement->do_while);
- return;
- case STATEMENT_DECLARATION:
- declaration_statement_to_firm(&statement->declaration);
- return;
- case STATEMENT_BREAK:
- create_jump_statement(statement, get_break_label());
- return;
- case STATEMENT_CONTINUE:
- create_jump_statement(statement, continue_label);
- return;
- case STATEMENT_SWITCH:
- switch_statement_to_firm(&statement->switchs);
- return;
- case STATEMENT_CASE_LABEL:
- case_label_to_firm(&statement->case_label);
- return;
- case STATEMENT_FOR:
- for_statement_to_firm(&statement->fors);
- return;
- case STATEMENT_LABEL:
- label_to_firm(&statement->label);
- return;
- case STATEMENT_GOTO:
- goto_to_firm(&statement->gotos);
- return;
- case STATEMENT_ASM:
- asm_statement_to_firm(&statement->asms);
- return;
- case STATEMENT_MS_TRY:
- ms_try_statement_to_firm(&statement->ms_try);
- return;
- case STATEMENT_LEAVE:
- leave_statement_to_firm(&statement->leave);
- return;
+ switch (stmt->kind) {
+ case STATEMENT_ASM: return asm_statement_to_firm( &stmt->asms);
+ case STATEMENT_CASE_LABEL: return case_label_to_firm( &stmt->case_label);
+ case STATEMENT_COMPOUND: return compound_statement_to_firm( &stmt->compound);
+ case STATEMENT_COMPUTED_GOTO: return computed_goto_to_firm( &stmt->computed_goto);
+ case STATEMENT_DECLARATION: return declaration_statement_to_firm(&stmt->declaration);
+ case STATEMENT_DO_WHILE: return do_while_statement_to_firm( &stmt->do_while);
+ case STATEMENT_EMPTY: return NULL; /* nothing */
+ case STATEMENT_EXPRESSION: return expression_statement_to_firm( &stmt->expression);
+ case STATEMENT_FOR: return for_statement_to_firm( &stmt->fors);
+ case STATEMENT_IF: return if_statement_to_firm( &stmt->ifs);
+ case STATEMENT_LABEL: return label_to_firm( &stmt->label);
+ case STATEMENT_LEAVE: return leave_statement_to_firm( &stmt->leave);
+ case STATEMENT_MS_TRY: return ms_try_statement_to_firm( &stmt->ms_try);
+ case STATEMENT_RETURN: return return_statement_to_firm( &stmt->returns);
+ case STATEMENT_SWITCH: return switch_statement_to_firm( &stmt->switchs);
+ case STATEMENT_WHILE: return while_statement_to_firm( &stmt->whiles);
+
+ case STATEMENT_BREAK: return create_jump_statement(stmt, get_break_label());
+ case STATEMENT_CONTINUE: return create_jump_statement(stmt, continue_label);
+ case STATEMENT_GOTO: return create_jump_statement(stmt, get_label_block(stmt->gotos.label));
+
+ case STATEMENT_ERROR: panic("error statement found");
}
panic("statement not implemented");
}
* @param irg the IR-graph
* @param dec_modifiers additional modifiers
*/
-static void handle_decl_modifier_irg(ir_graph_ptr irg,
+static void handle_decl_modifier_irg(ir_graph *irg,
decl_modifiers_t decl_modifiers)
{
if (decl_modifiers & DM_NAKED) {
set_irn_dbg_info(get_irg_start_block(irg),
get_entity_dbg_info(function_entity));
- ir_node *first_block = get_cur_block();
-
/* set inline flags */
if (entity->function.is_inline)
set_irg_inline_property(irg, irg_inline_recomended);
if (currently_reachable()) {
type_t *type = skip_typeref(entity->declaration.type);
assert(is_type_function(type));
- const function_type_t *func_type = &type->function;
- const type_t *return_type
- = skip_typeref(func_type->return_type);
+ type_t *const return_type = skip_typeref(type->function.return_type);
ir_node *ret;
- if (is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
+ if (is_type_void(return_type)) {
ret = new_Return(get_store(), 0, NULL);
} else {
- ir_mode *mode;
- if (is_type_scalar(return_type)) {
- mode = get_ir_mode_storage(func_type->return_type);
- } else {
- mode = mode_P_data;
- }
+ ir_mode *const mode = get_ir_mode_storage(return_type);
ir_node *in[1];
/* ยง5.1.2.2.3 main implicitly returns 0 */
add_immBlock_pred(end_block, ret);
}
- bool has_computed_gotos = false;
for (int i = ARR_LEN(all_labels) - 1; i >= 0; --i) {
label_t *label = all_labels[i];
if (label->address_taken) {
gen_ijmp_branches(label->block);
- has_computed_gotos = true;
}
mature_immBlock(label->block);
}
- if (has_computed_gotos) {
- /* if we have computed goto's in the function, we cannot inline it */
- if (get_irg_inline_property(irg) >= irg_inline_recomended) {
- source_position_t const *const pos = &entity->base.source_position;
- warningf(WARN_OTHER, pos, "'%N' can never be inlined because it contains a computed goto", entity);
- }
- set_irg_inline_property(irg, irg_inline_forbidden);
- }
DEL_ARR_F(all_labels);
all_labels = NULL;
- mature_immBlock(first_block);
- mature_immBlock(end_block);
-
irg_finalize_cons(irg);
/* finalize the frame type */
return;
ir_types_initialized = 1;
- ir_type_int = get_ir_type(type_int);
ir_type_char = get_ir_type(type_char);
ir_type_const_char = get_ir_type(type_const_char);
ir_type_wchar_t = get_ir_type(type_wchar_t);
- ir_type_void = get_ir_type(type_void);
be_params = be_get_backend_param();
mode_float_arithmetic = be_params->mode_float_arithmetic;
}
}
+static const char *get_cwd(void)
+{
+ static char buf[1024];
+ if (buf[0] == '\0')
+ getcwd(buf, sizeof(buf));
+ return buf;
+}
+
void translation_unit_to_firm(translation_unit_t *unit)
{
+ if (c_mode & _CXX) {
+ be_dwarf_set_source_language(DW_LANG_C_plus_plus);
+ } else if (c_mode & _C99) {
+ be_dwarf_set_source_language(DW_LANG_C99);
+ } else if (c_mode & _C89) {
+ be_dwarf_set_source_language(DW_LANG_C89);
+ } else {
+ be_dwarf_set_source_language(DW_LANG_C);
+ }
+ be_dwarf_set_compilation_directory(get_cwd());
+
/* initialize firm arithmetic */
tarval_set_integer_overflow_mode(TV_OVERFLOW_WRAP);
ir_set_uninitialized_local_variable_func(uninitialized_local_var);
/* just to be sure */
continue_label = NULL;
break_label = NULL;
- current_switch_cond = NULL;
+ current_switch = NULL;
current_translation_unit = unit;
init_ir_types();