X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast2firm.c;h=11f3bd7892770fa06723e492ddc7e5798f693604;hb=11839325c556fdf4b749c536bb0966bb0565c4d7;hp=f1fc7e37e2f84e51e3dcb0c730be4a8da7df3f10;hpb=2db8d343a6af5cbda30303d98ff956be7976a991;p=cparser diff --git a/ast2firm.c b/ast2firm.c index f1fc7e3..11f3bd7 100644 --- a/ast2firm.c +++ b/ast2firm.c @@ -28,6 +28,8 @@ static type_t *type_const_char; static type_t *type_void; static type_t *type_int; +static symbol_t *symbol_alloca; + static int next_value_number_function; static ir_node *continue_label; static ir_node *break_label; @@ -35,6 +37,9 @@ static ir_node *current_switch_cond; static bool saw_default_label; static ir_node **imature_blocks; +static const declaration_t *current_function_decl; +static ir_node *current_function_name; + typedef enum declaration_type_t { DECLARATION_TYPE_UNKNOWN, DECLARATION_TYPE_FUNCTION, @@ -94,6 +99,8 @@ void init_ast2firm(void) ir_type_void, mode_P_data); type_void->firm_type = ir_type_void; + + symbol_alloca = symbol_table_insert("__builtin_alloca"); } void exit_ast2firm(void) @@ -106,7 +113,7 @@ static ident *unique_ident(const char *tag) { char buf[256]; - snprintf(buf, sizeof(buf), "%s.%d", tag, unique_id); + snprintf(buf, sizeof(buf), "%s.%u", tag, unique_id); unique_id++; return new_id_from_str(buf); } @@ -368,8 +375,9 @@ static ir_type *create_struct_type(compound_type_t *type) int entry_size = get_type_size_bytes(entry_ir_type); int entry_alignment = get_type_alignment_bytes(entry_ir_type); - int misalign = offset % entry_alignment; - offset += misalign; + int misalign = offset % entry_alignment; + if (misalign != 0) + offset += entry_alignment - misalign; ir_entity *entity = new_entity(ir_type, ident, entry_ir_type); set_entity_offset(entity, offset); @@ -551,11 +559,18 @@ static ir_node *const_to_firm(const const_t *cnst) dbg_info *dbgi = get_dbg_info(&cnst->expression.source_position); ir_mode *mode = get_ir_mode(cnst->expression.datatype); - tarval *tv; + char buf[128]; + tarval *tv; + size_t len; if(mode_is_float(mode)) { tv = new_tarval_from_double(cnst->v.float_value, mode); } else { - tv = new_tarval_from_long(cnst->v.int_value, mode); + if(mode_is_signed(mode)) { + len = snprintf(buf, sizeof(buf), "%lld", cnst->v.int_value); + } else { + len = snprintf(buf, sizeof(buf), "%llu", cnst->v.int_value); + } + tv = new_tarval_from_str(buf, len, mode); } return new_d_Const(dbgi, mode, tv); @@ -569,29 +584,30 @@ static ir_node *create_symconst(dbg_info *dbgi, ir_entity *entity) return new_d_SymConst(dbgi, sym, symconst_addr_ent); } -static ir_node *string_literal_to_firm(const string_literal_t* literal) +static ir_node *string_to_firm(const source_position_t *const src_pos, + const char *const id_prefix, + const char *const string) { - ir_type *global_type = get_glob_type(); - ir_type *type = new_type_array(unique_ident("strtype"), 1, - ir_type_const_char); + ir_type *const global_type = get_glob_type(); + ir_type *const type = new_type_array(unique_ident("strtype"), 1, + ir_type_const_char); - ident *id = unique_ident("Lstr"); - ir_entity *entity = new_entity(global_type, id, type); + ident *const id = unique_ident(id_prefix); + ir_entity *const entity = new_entity(global_type, id, type); set_entity_ld_ident(entity, id); set_entity_variability(entity, variability_constant); - ir_type *elem_type = ir_type_const_char; - ir_mode *mode = get_type_mode(elem_type); + ir_type *const elem_type = ir_type_const_char; + ir_mode *const mode = get_type_mode(elem_type); - const char *string = literal->value; - size_t slen = strlen(string) + 1; + const size_t slen = strlen(string) + 1; set_array_lower_bound_int(type, 0, 0); set_array_upper_bound_int(type, 0, slen); set_type_size_bytes(type, slen); set_type_state(type, layout_fixed); - tarval **tvs = xmalloc(slen * sizeof(tvs[0])); + tarval **const tvs = xmalloc(slen * sizeof(tvs[0])); for(size_t i = 0; i < slen; ++i) { tvs[i] = new_tarval_from_long(string[i], mode); } @@ -599,11 +615,17 @@ static ir_node *string_literal_to_firm(const string_literal_t* literal) set_array_entity_values(entity, tvs, slen); free(tvs); - dbg_info *dbgi = get_dbg_info(&literal->expression.source_position); + dbg_info *const dbgi = get_dbg_info(src_pos); return create_symconst(dbgi, entity); } +static ir_node *string_literal_to_firm(const string_literal_t* literal) +{ + return string_to_firm(&literal->expression.source_position, "Lstr", + literal->value); +} + static ir_node *deref_address(type_t *const type, ir_node *const addr, dbg_info *const dbgi) { @@ -694,11 +716,43 @@ static ir_node *reference_addr(const reference_expression_t *ref) panic("reference to declaration with unknown type found"); } +static ir_node *process_builtin_call(const call_expression_t *call) +{ + dbg_info *dbgi = get_dbg_info(&call->expression.source_position); + + assert(call->function->type == EXPR_BUILTIN_SYMBOL); + builtin_symbol_expression_t *builtin + = (builtin_symbol_expression_t*) call->function; + symbol_t *symbol = builtin->symbol; + + if(symbol == symbol_alloca) { + if(call->arguments == NULL || call->arguments->next != NULL) { + panic("invalid number of parameters on __builtin_alloca"); + } + expression_t *argument = call->arguments->expression; + ir_node *size = expression_to_firm(argument); + + ir_node *store = get_store(); + ir_node *alloca = new_d_Alloc(dbgi, store, size, firm_unknown_type, + stack_alloc); + ir_node *proj_m = new_Proj(alloca, mode_M, pn_Alloc_M); + set_store(proj_m); + ir_node *res = new_Proj(alloca, mode_P_data, pn_Alloc_res); + + return res; + } else { + panic("Unsupported builtin found\n"); + } +} + static ir_node *call_expression_to_firm(const call_expression_t *call) { assert(get_cur_block() != NULL); expression_t *function = call->function; + if(function->type == EXPR_BUILTIN_SYMBOL) { + return process_builtin_call(call); + } ir_node *callee = expression_to_firm(function); function_type_t *function_type; @@ -774,6 +828,9 @@ static ir_node *call_expression_to_firm(const call_expression_t *call) return result; } +static void 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); static void create_condition_evaluation(const expression_t *expression, ir_node *true_block, @@ -806,7 +863,7 @@ static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode) { ir_mode *value_mode = get_irn_mode(value); - if(value_mode == dest_mode) + if (value_mode == dest_mode || is_Bad(value)) return value; if(dest_mode == mode_b) { @@ -838,7 +895,6 @@ static ir_node *create_incdec(const unary_expression_t *expression) offset = new_Const(mode, get_mode_one(mode)); } - ir_node *new_value; switch(expression->type) { case UNEXPR_POSTFIX_INCREMENT: { ir_node *new_value = new_d_Add(dbgi, value_node, offset, mode); @@ -862,15 +918,14 @@ static ir_node *create_incdec(const unary_expression_t *expression) } default: panic("no incdec expr in create_incdec"); + return NULL; } - - return new_value; } static ir_node *unary_expression_to_firm(const unary_expression_t *expression) { dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); - type_t *type = expression->expression.datatype; + type_t *type = skip_typeref(expression->expression.datatype); if(expression->type == UNEXPR_TAKE_ADDRESS) return expression_to_addr(expression->value); @@ -971,8 +1026,8 @@ static ir_node *create_arithmetic_binop(const binary_expression_t *expression, ir_node *left = expression_to_firm(expression->left); ir_node *right = expression_to_firm(expression->right); type_t *type = expression->right->datatype; - /* be careful with the modes, because in asithmetic assign nodes only - * the right operand has the mode of the arithmetic alread */ + /* be careful with the modes, because in arithmetic assign nodes only + * the right operand has the mode of the arithmetic already */ ir_mode *mode = get_ir_mode(type); left = create_conv(dbgi, left, mode); ir_node *res = func(dbgi, left, right, mode); @@ -1060,10 +1115,19 @@ static ir_node *create_sub(const binary_expression_t *expression) type_t *const type_left = skip_typeref(expr_left->datatype); type_t *const type_right = skip_typeref(expr_right->datatype); - if ((is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) || - (type_left->type == TYPE_POINTER && type_right->type == TYPE_POINTER)) { + if (is_type_arithmetic(type_left) && is_type_arithmetic(type_right)) { ir_mode *const mode = get_ir_mode(type); return new_d_Sub(dbgi, left, right, mode); + } else if (type_left->type == TYPE_POINTER && type_right->type == TYPE_POINTER) { + const pointer_type_t *const ptr_type = (const pointer_type_t*)type_left; + const unsigned elem_size = get_type_size(ptr_type->points_to); + ir_mode *const mode = get_ir_mode(type); + ir_node *const sub = new_d_Sub(dbgi, left, right, mode); + ir_node *const cnst = new_Const_long(mode_Is, (long)elem_size); + ir_node *const no_mem = new_NoMem(); + ir_node *const div = new_d_Div(dbgi, no_mem, sub, cnst, mode, + op_pin_state_floats); + return new_d_Proj(dbgi, div, mode, pn_Div_res); } assert(type_left->type == TYPE_POINTER); @@ -1084,9 +1148,11 @@ static ir_node *create_shift(const binary_expression_t *expression) ir_node *res; switch(expression->type) { + case BINEXPR_SHIFTLEFT_ASSIGN: case BINEXPR_SHIFTLEFT: res = new_d_Shl(dbgi, left, right, mode); break; + case BINEXPR_SHIFTRIGHT_ASSIGN: case BINEXPR_SHIFTRIGHT: { expression_t *expr_left = expression->left; type_t *type_left = skip_typeref(expr_left->datatype); @@ -1112,8 +1178,11 @@ static ir_node *create_divmod(const binary_expression_t *expression) ir_node *left = expression_to_firm(expression->left); ir_node *right = expression_to_firm(expression->right); ir_node *pin = new_Pin(new_NoMem()); - type_t *type = expression->expression.datatype; + /* be careful with the modes, because in arithmetic assign nodes only + * the right operand has the mode of the arithmetic already */ + type_t *type = expression->right->datatype; ir_mode *mode = get_ir_mode(type); + left = create_conv(dbgi, left, mode); ir_node *op; ir_node *res; @@ -1158,6 +1227,19 @@ static ir_node *create_arithmetic_assign_divmod( return value; } +static ir_node *create_arithmetic_assign_shift( + const binary_expression_t *expression) +{ + ir_node * value = create_shift(expression); + dbg_info *const dbgi = get_dbg_info(&expression->expression.source_position); + type_t *const type = expression->expression.datatype; + ir_mode *const mode = get_ir_mode(type); + + value = create_conv(dbgi, value, mode); + set_value_for_expression(expression->left, value); + + return value; +} static ir_node *binary_expression_to_firm(const binary_expression_t *expression) { @@ -1221,9 +1303,8 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) case BINEXPR_BITWISE_XOR_ASSIGN: return create_arithmetic_assign_binop(expression, new_d_Eor); case BINEXPR_SHIFTLEFT_ASSIGN: - return create_arithmetic_assign_binop(expression, new_d_Shl); case BINEXPR_SHIFTRIGHT_ASSIGN: - return create_arithmetic_assign_binop(expression, new_d_Shr); + return create_arithmetic_assign_shift(expression); default: panic("TODO binexpr type"); } @@ -1232,10 +1313,22 @@ static ir_node *binary_expression_to_firm(const binary_expression_t *expression) static ir_node *array_access_addr(const array_access_expression_t *expression) { dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); + ir_node *base_addr; + ir_node *offset; + + type_t *type_left = skip_typeref(expression->array_ref->datatype); + type_t *type_right = skip_typeref(expression->index->datatype); - ir_node *base_addr = expression_to_firm(expression->array_ref); - ir_node *offset = expression_to_firm(expression->index); - offset = create_conv(dbgi, offset, mode_Iu); + if(type_left->type == TYPE_POINTER || type_left->type == TYPE_ARRAY) { + base_addr = expression_to_firm(expression->array_ref); + offset = expression_to_firm(expression->index); + } else { + assert(type_right->type == TYPE_POINTER + || type_right->type == TYPE_ARRAY); + base_addr = expression_to_firm(expression->index); + offset = expression_to_firm(expression->array_ref); + } + offset = create_conv(dbgi, offset, mode_Iu); unsigned elem_size = get_type_size(expression->expression.datatype); ir_node *elem_size_const = new_Const_long(mode_Iu, elem_size); @@ -1251,7 +1344,7 @@ static ir_node *array_access_to_firm( { dbg_info *dbgi = get_dbg_info(&expression->expression.source_position); ir_node *addr = array_access_addr(expression); - type_t *type = expression->expression.datatype; + type_t *type = skip_typeref(expression->expression.datatype); return deref_address(type, addr, dbgi); } @@ -1300,6 +1393,9 @@ static ir_node *conditional_to_firm(const conditional_expression_t *expression) add_immBlock_pred(common_block, false_jmp); mature_immBlock(common_block); + /* TODO improve static semantics, so either both or no values are NULL */ + if (true_val == NULL || false_val == NULL) return NULL; + ir_node *in[2] = { true_val, false_val }; ir_mode *mode = get_irn_mode(true_val); assert(get_irn_mode(false_val) == mode); @@ -1333,6 +1429,130 @@ static ir_node *select_to_firm(const select_expression_t *expression) return deref_address(type, addr, dbgi); } +/* Values returned by __builtin_classify_type. */ +typedef enum gcc_type_class +{ + no_type_class = -1, + void_type_class, + integer_type_class, + char_type_class, + enumeral_type_class, + boolean_type_class, + pointer_type_class, + reference_type_class, + offset_type_class, + real_type_class, + complex_type_class, + function_type_class, + method_type_class, + record_type_class, + union_type_class, + array_type_class, + string_type_class, + set_type_class, + file_type_class, + lang_type_class +} gcc_type_class; + +static ir_node *classify_type_to_firm(const classify_type_expression_t *const expr) +{ + const type_t *const type = expr->type_expression->datatype; + + gcc_type_class tc; + switch (type->type) + { + case TYPE_ATOMIC: { + const atomic_type_t *const atomic_type = (const atomic_type_t*)type; + switch (atomic_type->atype) { + // should not be reached + case ATOMIC_TYPE_INVALID: + tc = no_type_class; + break; + + // gcc cannot do that + case ATOMIC_TYPE_VOID: + tc = void_type_class; + break; + + case ATOMIC_TYPE_CHAR: // gcc handles this as integer + case ATOMIC_TYPE_SCHAR: // gcc handles this as integer + case ATOMIC_TYPE_UCHAR: // gcc handles this as integer + case ATOMIC_TYPE_SHORT: + case ATOMIC_TYPE_USHORT: + case ATOMIC_TYPE_INT: + case ATOMIC_TYPE_UINT: + case ATOMIC_TYPE_LONG: + case ATOMIC_TYPE_ULONG: + case ATOMIC_TYPE_LONGLONG: + case ATOMIC_TYPE_ULONGLONG: + case ATOMIC_TYPE_BOOL: // gcc handles this as integer + tc = integer_type_class; + break; + + case ATOMIC_TYPE_FLOAT: + case ATOMIC_TYPE_DOUBLE: + case ATOMIC_TYPE_LONG_DOUBLE: + tc = real_type_class; + break; + +#ifdef PROVIDE_COMPLEX + case ATOMIC_TYPE_FLOAT_COMPLEX: + case ATOMIC_TYPE_DOUBLE_COMPLEX: + case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX: + tc = complex_type_class; + break; + case ATOMIC_TYPE_FLOAT_IMAGINARY: + case ATOMIC_TYPE_DOUBLE_IMAGINARY: + case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY: + tc = complex_type_class; + break; +#endif + + default: + panic("Unimplemented case in classify_type_to_firm()."); + } + break; + } + + case TYPE_ARRAY: // gcc handles this as pointer + case TYPE_FUNCTION: // gcc handles this as pointer + case TYPE_POINTER: tc = pointer_type_class; break; + case TYPE_COMPOUND_STRUCT: tc = record_type_class; break; + case TYPE_COMPOUND_UNION: tc = union_type_class; break; + + // gcc handles this as integer + case TYPE_ENUM: tc = integer_type_class; break; + + default: + panic("Unimplemented case in classify_type_to_firm()."); + } + + dbg_info *const dbgi = get_dbg_info(&expr->expression.source_position); + ir_mode *const mode = mode_Is; + tarval *const tv = new_tarval_from_long(tc, mode); + return new_d_Const(dbgi, mode, tv); +} + +static ir_node *function_name_to_firm(const string_literal_t *const expr) +{ + if (current_function_name == NULL) { + const source_position_t *const src_pos = + &expr->expression.source_position; + const char *const name = current_function_decl->symbol->string; + current_function_name = string_to_firm(src_pos, "__func__", name); + } + + return current_function_name; +} + +static ir_node *statement_expression_to_firm(const statement_expression_t *expr) +{ + statement_t *statement = expr->statement; + + assert(statement->type == STATEMENT_COMPOUND); + return compound_statement_to_firm((compound_statement_t*) statement); +} + static ir_node *dereference_addr(const unary_expression_t *const expression) { assert(expression->type == UNEXPR_DEREFERENCE); @@ -1388,11 +1608,16 @@ static ir_node *_expression_to_firm(const expression_t *expression) return conditional_to_firm((const conditional_expression_t*)expression); case EXPR_SELECT: return select_to_firm((const select_expression_t*) expression); + case EXPR_CLASSIFY_TYPE: + return classify_type_to_firm((const classify_type_expression_t*)expression); case EXPR_FUNCTION: - case EXPR_OFFSETOF: case EXPR_PRETTY_FUNCTION: - case EXPR_VA_ARG: + return function_name_to_firm((const string_literal_t*)expression); case EXPR_STATEMENT: + return statement_expression_to_firm( + (const statement_expression_t*) expression); + case EXPR_OFFSETOF: + case EXPR_VA_ARG: case EXPR_BUILTIN_SYMBOL: panic("unimplemented expression found"); @@ -1486,7 +1711,6 @@ static void create_condition_evaluation(const expression_t *expression, set_cur_block(NULL); } -static void statement_to_firm(statement_t *statement); static void return_statement_to_firm(return_statement_t *statement) { @@ -1511,21 +1735,30 @@ static void return_statement_to_firm(return_statement_t *statement) set_cur_block(NULL); } -static void compound_statement_to_firm(compound_statement_t *compound) +static ir_node *expression_statement_to_firm(expression_statement_t *statement) { + if(get_cur_block() == NULL) + return NULL; + + return expression_to_firm(statement->expression); +} + +static ir_node *compound_statement_to_firm(compound_statement_t *compound) +{ + ir_node *result = NULL; statement_t *statement = compound->statements; for( ; statement != NULL; statement = statement->next) { //context2firm(&statement->context); + + if(statement->next == NULL && statement->type == STATEMENT_EXPRESSION) { + result = expression_statement_to_firm( + (expression_statement_t*) statement); + break; + } statement_to_firm(statement); } -} - -static void expression_statement_to_firm(expression_statement_t *statement) -{ - if(get_cur_block() == NULL) - return; - expression_to_firm(statement->expression); + return result; } static void if_statement_to_firm(if_statement_t *statement) @@ -1769,28 +2002,270 @@ static void create_declaration_entity(declaration_t *declaration, /* TODO: visibility? */ } +typedef struct compound_graph_path_entry_t compound_graph_path_entry_t; + +enum compound_graph_entry_type_t { + COMPOUND_GRAPH_ENTRY_ARRAY, + COMPOUND_GRAPH_ENTRY_COMPOUND +}; + +struct compound_graph_path_entry_t { + int type; + union { + ir_entity *entity; + int array_index; + } v; + compound_graph_path_entry_t *prev; +}; + +static void create_initializer_object(initializer_t *initializer, type_t *type, + ir_entity *entity, compound_graph_path_entry_t *entry, int len); + +static compound_graph_path *create_compound_path(ir_type *type, + compound_graph_path_entry_t *entry, int len) +{ + compound_graph_path *path = new_compound_graph_path(type, len); + + int i = len - 1; + for( ; entry != NULL; entry = entry->prev, --i) { + assert(i >= 0); + if(entry->type == COMPOUND_GRAPH_ENTRY_COMPOUND) { + set_compound_graph_path_node(path, i, entry->v.entity); + } else { + assert(entry->type == COMPOUND_GRAPH_ENTRY_ARRAY); + set_compound_graph_path_array_index(path, i, entry->v.array_index); + } + } + assert(i == -1); + + return path; +} + +static void create_initializer_value(initializer_value_t *initializer, + ir_entity *entity, + compound_graph_path_entry_t *entry, + int len) +{ + ir_node *node = expression_to_firm(initializer->value); + ir_type *type = get_entity_type(entity); + compound_graph_path *path = create_compound_path(type, entry, len); + add_compound_ent_value_w_path(entity, node, path); +} + +static void create_initializer_compound(initializer_list_t *initializer, + compound_type_t *type, + ir_entity *entity, + compound_graph_path_entry_t *last_entry, + int len) +{ + declaration_t *compound_declaration = type->declaration; + + declaration_t *compound_entry = compound_declaration->context.declarations; + + compound_graph_path_entry_t entry; + entry.type = COMPOUND_GRAPH_ENTRY_COMPOUND; + entry.prev = last_entry; + ++len; + + size_t i = 0; + for( ; compound_entry != NULL; compound_entry = compound_entry->next) { + if(compound_entry->symbol == NULL) + continue; + if(compound_entry->namespc != NAMESPACE_NORMAL) + continue; + + if(i >= initializer->len) + break; + + entry.v.entity = compound_entry->v.entity; + + initializer_t *sub_initializer = initializer->initializers[i]; + + assert(compound_entry != NULL); + assert(compound_entry->declaration_type + == DECLARATION_TYPE_COMPOUND_MEMBER); + + if(sub_initializer->type == INITIALIZER_VALUE) { + create_initializer_value((initializer_value_t*) sub_initializer, + entity, &entry, len); + } else { + type_t *type = skip_typeref(compound_entry->type); + create_initializer_object(sub_initializer, type, entity, &entry, + len); + } + + ++i; + } +} + +static void create_initializer_array(initializer_list_t *initializer, + array_type_t *type, ir_entity *entity, + compound_graph_path_entry_t *last_entry, + int len) +{ + type_t *element_type = type->element_type; + element_type = skip_typeref(element_type); + + compound_graph_path_entry_t entry; + entry.type = COMPOUND_GRAPH_ENTRY_ARRAY; + entry.prev = last_entry; + ++len; + + for(size_t i = 0; i < initializer->len; ++i) { + entry.v.array_index = i; + + initializer_t *sub_initializer = initializer->initializers[i]; + + if(sub_initializer->type == INITIALIZER_VALUE) { + create_initializer_value((initializer_value_t*) sub_initializer, + entity, &entry, len); + } else { + assert(sub_initializer->type == INITIALIZER_LIST); + create_initializer_object(sub_initializer, element_type, entity, + &entry, len); + } + } +} + +static void create_initializer_string(initializer_string_t *initializer, + array_type_t *type, ir_entity *entity, + compound_graph_path_entry_t *last_entry, + int len) +{ + type_t *element_type = type->element_type; + element_type = skip_typeref(element_type); + + compound_graph_path_entry_t entry; + entry.type = COMPOUND_GRAPH_ENTRY_ARRAY; + entry.prev = last_entry; + ++len; + + ir_type *irtype = get_entity_type(entity); + size_t arr_len = get_array_type_size(type); + const char *p = initializer->string; + size_t i = 0; + for(i = 0; i < arr_len; ++i, ++p) { + entry.v.array_index = i; + + ir_node *node = new_Const_long(mode_Bs, *p); + compound_graph_path *path = create_compound_path(irtype, &entry, len); + add_compound_ent_value_w_path(entity, node, path); + + if(*p == '\0') + break; + } +} + +static void create_initializer_object(initializer_t *initializer, type_t *type, + ir_entity *entity, compound_graph_path_entry_t *entry, int len) +{ + if(type->type == TYPE_ARRAY) { + array_type_t *array_type = (array_type_t*) type; + + if(initializer->type == INITIALIZER_STRING) { + initializer_string_t *string = (initializer_string_t*) initializer; + create_initializer_string(string, array_type, entity, entry, len); + } else { + assert(initializer->type == INITIALIZER_LIST); + initializer_list_t *list = (initializer_list_t*) initializer; + create_initializer_array(list, array_type, entity, entry, len); + } + } else { + assert(initializer->type == INITIALIZER_LIST); + initializer_list_t *list = (initializer_list_t*) initializer; + + assert(type->type == TYPE_COMPOUND_STRUCT + || type->type == TYPE_COMPOUND_UNION); + compound_type_t *compound_type = (compound_type_t*) type; + create_initializer_compound(list, compound_type, entity, entry, len); + } +} + +static void create_initializer_local_variable_entity(declaration_t *declaration) +{ + initializer_t *initializer = declaration->init.initializer; + dbg_info *dbgi = get_dbg_info(&declaration->source_position); + ir_entity *entity = declaration->v.entity; + ir_node *memory = get_store(); + ir_node *nomem = new_NoMem(); + ir_node *frame = get_irg_frame(current_ir_graph); + ir_node *addr = new_d_simpleSel(dbgi, nomem, frame, entity); + + if(is_atomic_entity(entity)) { + assert(initializer->type == INITIALIZER_VALUE); + initializer_value_t *initializer_value + = (initializer_value_t*) initializer; + + ir_node *value = expression_to_firm(initializer_value->value); + ir_node *store = new_d_Store(dbgi, memory, addr, value); + ir_node *store_mem = new_d_Proj(dbgi, store, mode_M, pn_Store_M); + set_store(store_mem); + return; + } + + /* create a "template" entity which is copied to the entity on the stack */ + ident *id = unique_ident("initializer"); + ir_type *irtype = get_ir_type(declaration->type); + ir_type *global_type = get_glob_type(); + ir_entity *init_entity = new_entity(global_type, id, irtype); + set_entity_ld_ident(init_entity, id); + + set_entity_variability(init_entity, variability_initialized); + set_entity_visibility(init_entity, visibility_local); + + ir_graph *old_current_ir_graph = current_ir_graph; + current_ir_graph = get_const_code_irg(); + + type_t *type = skip_typeref(declaration->type); + create_initializer_object(initializer, type, init_entity, NULL, 0); + + assert(current_ir_graph == get_const_code_irg()); + current_ir_graph = old_current_ir_graph; + + ir_node *src_addr = create_symconst(dbgi, init_entity); + ir_node *copyb = new_d_CopyB(dbgi, memory, addr, src_addr, irtype); + + ir_node *copyb_mem = new_Proj(copyb, mode_M, pn_CopyB_M_regular); + set_store(copyb_mem); +} + static void create_initializer(declaration_t *declaration) { initializer_t *initializer = declaration->init.initializer; if(initializer == NULL) return; + declaration_type_t declaration_type = (declaration_type_t)declaration->declaration_type; + if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY) { + create_initializer_local_variable_entity(declaration); + return; + } + if(initializer->type == INITIALIZER_VALUE) { - assert(initializer->designator == NULL); - assert(initializer->next == NULL); - ir_node *init_node = expression_to_firm(initializer->v.value); + initializer_value_t *initializer_value + = (initializer_value_t*) initializer; + ir_node *value = expression_to_firm(initializer_value->value); - if(declaration->declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) { - set_value(declaration->v.value_number, init_node); + if(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE) { + set_value(declaration->v.value_number, value); } else { + assert(declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE); + ir_entity *entity = declaration->v.entity; set_entity_variability(entity, variability_initialized); - set_atomic_ent_value(entity, init_node); + set_atomic_ent_value(entity, value); } } else { - assert(initializer->type == INITIALIZER_LIST); - panic("list initializer not supported yet"); + declaration_type_t declaration_type = (declaration_type_t)declaration->declaration_type; + assert(declaration_type == DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY + || declaration_type == DECLARATION_TYPE_GLOBAL_VARIABLE); + + ir_entity *entity = declaration->v.entity; + set_entity_variability(entity, variability_initialized); + + type_t *type = skip_typeref(declaration->type); + create_initializer_object(initializer, type, entity, NULL, 0); } } @@ -1821,6 +2296,31 @@ static void create_local_variable(declaration_t *declaration) create_initializer(declaration); } +static void create_local_static_variable(declaration_t *declaration) +{ + assert(declaration->declaration_type == DECLARATION_TYPE_UNKNOWN); + + type_t *type = skip_typeref(declaration->type); + ir_type *global_type = get_glob_type(); + ident *id = unique_ident(declaration->symbol->string); + ir_type *irtype = get_ir_type(type); + ir_entity *entity = new_entity(global_type, id, irtype); + set_entity_ld_ident(entity, id); + + declaration->declaration_type = DECLARATION_TYPE_GLOBAL_VARIABLE; + declaration->v.entity = entity; + set_entity_variability(entity, variability_uninitialized); + set_entity_visibility(entity, visibility_local); + + ir_graph *old_current_ir_graph = current_ir_graph; + current_ir_graph = get_const_code_irg(); + + create_initializer(declaration); + + assert(current_ir_graph == get_const_code_irg()); + current_ir_graph = old_current_ir_graph; +} + static void declaration_statement_to_firm(declaration_statement_t *statement) { declaration_t *declaration = statement->declarations_begin; @@ -1832,7 +2332,8 @@ static void declaration_statement_to_firm(declaration_statement_t *statement) case STORAGE_CLASS_TYPEDEF: continue; case STORAGE_CLASS_STATIC: - panic("static local vars not implemented yet"); + create_local_static_variable(declaration); + continue; case STORAGE_CLASS_ENUM_ENTRY: panic("enum entry declaration in local block found"); case STORAGE_CLASS_EXTERN: @@ -1953,6 +2454,8 @@ static void case_label_to_firm(const case_label_statement_t *statement) } add_immBlock_pred(block, proj); mature_immBlock(block); + + statement_to_firm(statement->label_statement); } static ir_node *get_label_block(declaration_t *label) @@ -2054,24 +2557,130 @@ static void statement_to_firm(statement_t *statement) panic("Statement not implemented\n"); } +static int count_local_declarations(const declaration_t * decl, + const declaration_t *const end) +{ + int count = 0; + for (; decl != end; decl = decl->next) { + const type_t *type = skip_typeref(decl->type); + switch (type->type) { + case TYPE_ATOMIC: + case TYPE_ENUM: + case TYPE_POINTER: + if (!decl->address_taken) ++count; + break; + + default: break; + } + } + return count; +} + +static int count_decls_in_stmts(const statement_t *stmt) +{ + int count = 0; + for (; stmt != NULL; stmt = stmt->next) { + switch (stmt->type) { + case STATEMENT_DECLARATION: { + const declaration_statement_t *const decl_stmt = + (const declaration_statement_t*)stmt; + count += count_local_declarations(decl_stmt->declarations_begin, + decl_stmt->declarations_end->next); + break; + } + + case STATEMENT_COMPOUND: { + const compound_statement_t *const comp = + (const compound_statement_t*)stmt; + count += count_decls_in_stmts(comp->statements); + break; + } + + case STATEMENT_IF: { + const if_statement_t *const if_stmt = (const if_statement_t*)stmt; + count += count_decls_in_stmts(if_stmt->true_statement); + count += count_decls_in_stmts(if_stmt->false_statement); + break; + } + + case STATEMENT_SWITCH: { + const switch_statement_t *const switch_stmt = + (const switch_statement_t*)stmt; + count += count_decls_in_stmts(switch_stmt->body); + break; + } + + case STATEMENT_LABEL: { + const label_statement_t *const label_stmt = + (const label_statement_t*)stmt; + count += count_decls_in_stmts(label_stmt->label_statement); + break; + } + + case STATEMENT_WHILE: { + const while_statement_t *const while_stmt = + (const while_statement_t*)stmt; + count += count_decls_in_stmts(while_stmt->body); + break; + } + + case STATEMENT_DO_WHILE: { + const do_while_statement_t *const do_while_stmt = + (const do_while_statement_t*)stmt; + count += count_decls_in_stmts(do_while_stmt->body); + break; + } + + case STATEMENT_FOR: { + const for_statement_t *const for_stmt = + (const for_statement_t*)stmt; + /* TODO initialisation */ + count += count_decls_in_stmts(for_stmt->body); + break; + } + + case STATEMENT_BREAK: + case STATEMENT_CASE_LABEL: + case STATEMENT_CONTINUE: + case STATEMENT_EXPRESSION: + case STATEMENT_GOTO: + case STATEMENT_INVALID: + case STATEMENT_RETURN: + break; + } + } + return count; +} + static int get_function_n_local_vars(declaration_t *declaration) { - (void) declaration; - /* TODO */ - return 30; + int count = 0; + + /* count parameters */ + count += count_local_declarations(declaration->context.declarations, NULL); + + /* count local variables declared in body */ + count += count_decls_in_stmts(declaration->init.statement); + + /* TODO FIXME: Matze: I'm lazy don't want to scan all expressions + * for expression statements... */ + count += 10; + + return count; } static void initialize_function_parameters(declaration_t *declaration) { - ir_graph *irg = current_ir_graph; - ir_node *args = get_irg_args(irg); - ir_node *start_block = get_irg_start_block(irg); + ir_graph *irg = current_ir_graph; + ir_node *args = get_irg_args(irg); + ir_node *start_block = get_irg_start_block(irg); + ir_type *function_irtype = get_ir_type(declaration->type); int n = 0; declaration_t *parameter = declaration->context.declarations; - for( ; parameter != NULL; parameter = parameter->next) { + for( ; parameter != NULL; parameter = parameter->next, ++n) { assert(parameter->declaration_type == DECLARATION_TYPE_UNKNOWN); - type_t *type = parameter->type; + type_t *type = skip_typeref(parameter->type); bool needs_entity = parameter->address_taken; if(type->type == TYPE_COMPOUND_STRUCT @@ -2080,13 +2689,19 @@ static void initialize_function_parameters(declaration_t *declaration) } if(needs_entity) { - panic("entities for function parameters not implemented yet"); + ir_entity *entity = get_method_value_param_ent(function_irtype, n); + ident *id = new_id_from_str(parameter->symbol->string); + set_entity_ident(entity, id); + + parameter->declaration_type + = DECLARATION_TYPE_LOCAL_VARIABLE_ENTITY; + parameter->v.entity = entity; + continue; } ir_mode *mode = get_ir_mode(parameter->type); long pn = n; ir_node *proj = new_r_Proj(irg, start_block, args, mode, pn); - ++n; parameter->declaration_type = DECLARATION_TYPE_LOCAL_VARIABLE; parameter->v.value_number = next_value_number_function; @@ -2103,6 +2718,9 @@ static void create_function(declaration_t *declaration) if(declaration->init.statement == NULL) return; + current_function_decl = declaration; + current_function_name = NULL; + assert(imature_blocks == NULL); imature_blocks = NEW_ARR_F(ir_node*, 0); @@ -2165,7 +2783,9 @@ static void create_function(declaration_t *declaration) int misalign = 0; if(align > 0) { misalign = offset % align; - offset += misalign; + if(misalign > 0) { + offset += align - misalign; + } } set_entity_offset(entity, offset); @@ -2198,6 +2818,7 @@ static void create_global_variable(declaration_t *declaration) static void context_to_firm(context_t *context) { + /* first pass: create declarations */ declaration_t *declaration = context->declarations; for( ; declaration != NULL; declaration = declaration->next) { if(declaration->namespc != NAMESPACE_NORMAL) @@ -2210,18 +2831,33 @@ static void context_to_firm(context_t *context) type_t *type = declaration->type; if(type->type == TYPE_FUNCTION) { - create_function(declaration); + get_function_entity(declaration); } else { create_global_variable(declaration); } } + + /* second pass: create code */ + declaration = context->declarations; + for( ; declaration != NULL; declaration = declaration->next) { + if(declaration->namespc != NAMESPACE_NORMAL) + continue; + if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY + || declaration->storage_class == STORAGE_CLASS_TYPEDEF) + continue; + if(declaration->symbol == NULL) + continue; + + type_t *type = declaration->type; + if(type->type != TYPE_FUNCTION) + continue; + + create_function(declaration); + } } void translation_unit_to_firm(translation_unit_t *unit) { - /* remove me later TODO FIXME */ - (void) get_type_size; - /* just to be sure */ continue_label = NULL; break_label = NULL;