/*
* This file is part of cparser.
- * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * Copyright (C) 2012 Matthias Braun <matze@braunis.de>
*/
#include <config.h>
static ir_node *uninitialized_local_var(ir_graph *irg, ir_mode *mode, int pos)
{
const entity_t *entity = get_irg_loc_description(irg, pos);
-
- if (entity != NULL) {
- position_t const *const pos = &entity->base.pos;
- warningf(WARN_UNINITIALIZED, pos, "'%N' might be used uninitialized", entity);
- }
+ if (entity)
+ warningf(WARN_UNINITIALIZED, &entity->base.pos, "'%N' might be used uninitialized", entity);
return new_r_Unknown(irg, mode);
}
mode = s_modes[size];
if (mode == NULL) {
- char name[32];
+ ir_mode *base_mode = get_type_mode(base_tp);
+ unsigned modulo_shift = get_mode_modulo_shift(base_mode);
+ char name[32];
snprintf(name, sizeof(name), "bf_I%u", size);
- mode = new_int_mode(name, irma_twos_complement, size, 1, 0);
+ mode = new_int_mode(name, irma_twos_complement, size, 1, modulo_shift);
s_modes[size] = mode;
}
mode = u_modes[size];
if (mode == NULL) {
- char name[32];
+ ir_mode *base_mode = get_type_mode(base_tp);
+ unsigned modulo_shift = get_mode_modulo_shift(base_mode);
+ char name[32];
snprintf(name, sizeof(name), "bf_U%u", size);
- mode = new_int_mode(name, irma_twos_complement, size, 0, 0);
+ mode = new_int_mode(name, irma_twos_complement, size, 0, modulo_shift);
u_modes[size] = mode;
}
symbol_t *symbol = entry->base.symbol;
type_t *entry_type = entry->declaration.type;
- ident *ident;
+ ident *member_id;
if (symbol == NULL) {
/* anonymous bitfield member, skip */
if (entry->compound_member.bitfield)
continue;
assert(is_type_compound(entry_type));
- ident = id_unique("anon.%u");
+ member_id = id_unique("anon.%u");
} else {
- ident = new_id_from_str(symbol->string);
+ member_id = new_id_from_str(symbol->string);
}
dbg_info *dbgi = get_dbg_info(&entry->base.pos);
} else {
entry_irtype = get_ir_type(entry_type);
}
- ir_entity *entity = new_d_entity(irtype, ident, entry_irtype, dbgi);
+ ir_entity *entity = new_d_entity(irtype, member_id, entry_irtype, dbgi);
set_entity_offset(entity, entry->compound_member.offset);
set_entity_offset_bits_remainder(entity,
}
expression_t *con = NULL;
- if (is_local_variable(op1) && is_constant_expression(op2) == EXPR_CLASS_CONSTANT) {
+ if (is_local_variable(op1) && is_constant_expression(op2) != EXPR_CLASS_VARIABLE) {
var = op1->reference.entity;
con = op2;
- } else if (is_constant_expression(op1) == EXPR_CLASS_CONSTANT && is_local_variable(op2)) {
+ } else if (is_constant_expression(op1) != EXPR_CLASS_VARIABLE && is_local_variable(op2)) {
relation = get_inversed_relation(relation);
var = op2->reference.entity;
con = op1;
if (is_type_void(type))
return NULL;
- ir_node *value = expression_to_value(expr->value);
- dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
- type_t *const from_type = skip_typeref(expr->value->base.type);
- ir_mode *const mode = get_ir_mode_storage(type);
+ type_t *const from_type = skip_typeref(expr->value->base.type);
+ ir_node *value = is_type_complex(from_type)
+ ? expression_to_complex(expr->value).real
+ : expression_to_value(expr->value);
+
+ dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
+ ir_mode *const mode = get_ir_mode_storage(type);
/* check for conversion from / to __based types */
if (is_type_pointer(type) && is_type_pointer(from_type)) {
const variable_t *from_var = from_type->pointer.base_variable;
/* set branch prediction info based on __builtin_expect */
if (is_builtin_expect(expr) && is_Cond(cond)) {
call_argument_t *const argument = expr->call.arguments->next;
- if (is_constant_expression(argument->expression) == EXPR_CLASS_CONSTANT) {
+ if (is_constant_expression(argument->expression) != EXPR_CLASS_VARIABLE) {
bool const cnst = fold_constant_to_bool(argument->expression);
cond_jmp_predicate const pred = cnst ? COND_JMP_PRED_TRUE : COND_JMP_PRED_FALSE;
set_Cond_jmp_pred(cond, pred);
type_t *type = expression->type;
initializer_t *initializer = expression->initializer;
- if (expression->global_scope ||
- ((type->base.qualifiers & TYPE_QUALIFIER_CONST)
- && is_constant_initializer(initializer) == EXPR_CLASS_CONSTANT)) {
+ if (expression->global_scope || (
+ type->base.qualifiers & TYPE_QUALIFIER_CONST &&
+ is_constant_initializer(initializer) != EXPR_CLASS_VARIABLE
+ )) {
ir_entity *entity = create_initializer_entity(dbgi, initializer, type);
return create_symconst(dbgi, entity);
} else {
ir_tarval *fold_constant_to_tarval(const expression_t *expression)
{
- assert(is_constant_expression(expression) == EXPR_CLASS_CONSTANT);
+ assert(is_constant_expression(expression) >= EXPR_CLASS_CONSTANT);
bool constant_folding_old = constant_folding;
constant_folding = true;
static complex_constant fold_complex_constant(const expression_t *expression)
{
- assert(is_constant_expression(expression) == EXPR_CLASS_CONSTANT);
+ assert(is_constant_expression(expression) >= EXPR_CLASS_CONSTANT);
bool constant_folding_old = constant_folding;
constant_folding = true;
const builtin_constant_expression_t *expression)
{
ir_mode *const mode = get_ir_mode_storage(expression->base.type);
- bool const v = is_constant_expression(expression->value) == EXPR_CLASS_CONSTANT;
+ bool const v = is_constant_expression(expression->value) != EXPR_CLASS_VARIABLE;
return create_Const_from_bool(mode, v);
}
jump_target *const true_target, jump_target *const false_target,
ir_relation relation);
-static complex_value create_complex_condition_evaluation(
- const expression_t *const expression, jump_target *const true_target,
- jump_target *const false_target);
+static complex_value complex_to_control_flow(const expression_t *expression,
+ jump_target *true_target,
+ jump_target *false_target);
/**
* create a short-circuit expression evaluation that tries to construct
default:;
type_t *const type = skip_typeref(expr->base.type);
if (is_type_complex(type)) {
- create_complex_condition_evaluation(expr, true_target, false_target);
+ complex_to_control_flow(expr, true_target, false_target);
return NULL;
}
set_unreachable_now();
}
-static complex_value create_complex_condition_evaluation(
+static complex_value complex_to_control_flow(
const expression_t *const expression, jump_target *const true_target,
jump_target *const false_target)
{
jump_target extra_target;
init_jump_target(&extra_target, NULL);
complex_value value = expression_to_complex(expression);
+ if (is_Const(value.real) && is_Const(value.imag)) {
+ ir_tarval *tv_real = get_Const_tarval(value.real);
+ ir_tarval *tv_imag = get_Const_tarval(value.imag);
+ if (tarval_is_null(tv_real) && tarval_is_null(tv_imag)) {
+ jump_to_target(false_target);
+ } else {
+ jump_to_target(true_target);
+ }
+ set_unreachable_now();
+ return value;
+ }
+
dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
type_t *const type = expression->base.type;
ir_mode *const mode = get_complex_mode_arithmetic(type);
static complex_value complex_conditional_to_firm(
const conditional_expression_t *const expression)
{
- /* first try to fold a constant condition */
- if (is_constant_expression(expression->condition) == EXPR_CLASS_CONSTANT) {
- bool val = fold_constant_to_bool(expression->condition);
- if (val) {
- expression_t *true_expression = expression->true_expression;
- if (true_expression == NULL) {
- /* we will evaluate true_expression a second time here, but in
- * this case it is harmless since constant expression have no
- * side effects */
- true_expression = expression->condition;
- }
- return expression_to_complex(true_expression);
- } else {
- return expression_to_complex(expression->false_expression);
- }
- }
-
jump_target true_target;
jump_target false_target;
init_jump_target(&true_target, NULL);
memset(&cond_val, 0, sizeof(cond_val));
if (expression->true_expression == NULL) {
assert(is_type_complex(skip_typeref(expression->condition->base.type)));
- cond_val
- = create_complex_condition_evaluation(expression->condition,
- &true_target, &false_target);
+ cond_val = complex_to_control_flow(expression->condition,
+ &true_target, &false_target);
} else {
expression_to_control_flow(expression->condition, &true_target, &false_target);
}
- complex_value val;
+ complex_value val;
memset(&val, 0, sizeof(val));
- jump_target exit_target;
+ jump_target exit_target;
init_jump_target(&exit_target, NULL);
+ type_t *const type = skip_typeref(expression->base.type);
+ ir_mode *const mode = get_complex_mode_arithmetic(type);
+ dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
if (enter_jump_target(&true_target)) {
if (expression->true_expression) {
assert(cond_val.real != NULL);
val = cond_val;
}
+ val = complex_conv(dbgi, val, mode);
jump_to_target(&exit_target);
}
- type_t *const type = skip_typeref(expression->base.type);
if (enter_jump_target(&false_target)) {
complex_value false_val
= expression_to_complex(expression->false_expression);
+ false_val = complex_conv(dbgi, false_val, mode);
jump_to_target(&exit_target);
if (val.real != NULL) {
ir_node *const inr[] = { val.real, false_val.real };
ir_node *const ini[] = { val.imag, false_val.imag };
- dbg_info *const dbgi = get_dbg_info(&expression->base.pos);
- ir_mode *const mode = get_complex_mode_arithmetic(type);
ir_node *const block = exit_target.block;
val.real = new_rd_Phi(dbgi, block, lengthof(inr), inr, mode);
val.imag = new_rd_Phi(dbgi, block, lengthof(ini), ini, mode);
if (!enter_jump_target(&exit_target)) {
set_cur_block(new_Block(0, NULL));
assert(!is_type_void(type));
- ir_mode *mode = get_complex_mode_arithmetic(type);
- val.real = new_Unknown(mode);
- val.imag = val.real;
+ val.real = val.imag = new_Bad(mode);
}
return val;
}
return result;
}
+static complex_value complex_assign_to_firm(const binary_expression_t *expr)
+{
+ dbg_info *const dbgi = get_dbg_info(&expr->base.pos);
+ complex_value const value = expression_to_complex(expr->right);
+ ir_node *const addr = expression_to_addr(expr->left);
+ set_complex_value_for_expression(dbgi, expr->left, value, addr);
+ return value;
+}
+
static complex_value complex_statement_expression_to_firm(
const statement_expression_t *const expr)
{
return complex_negate_to_firm(&expression->unary);
case EXPR_UNARY_COMPLEMENT:
return complex_complement_to_firm(&expression->unary);
- case EXPR_BINARY_ASSIGN: {
- const binary_expression_t *binexpr = &expression->binary;
- dbg_info *dbgi = get_dbg_info(&binexpr->base.pos);
- complex_value value = expression_to_complex(binexpr->right);
- ir_node *addr = expression_to_addr(binexpr->left);
- set_complex_value_for_expression(dbgi, binexpr->left, value, addr);
- return value;
- }
+ case EXPR_BINARY_ASSIGN:
+ return complex_assign_to_firm(&expression->binary);
case EXPR_LITERAL_CASES:
return complex_literal_to_firm(&expression->literal);
case EXPR_CALL:
&& get_entity_owner(irentity) != get_tls_type()) {
add_entity_linkage(irentity, IR_LINKAGE_CONSTANT);
}
- ir_initializer_t *initializer = create_initializer_compound(2);
+ ir_initializer_t *complex_init = create_initializer_compound(2);
ir_initializer_t *reali = create_initializer_const(real);
- set_initializer_compound_value(initializer, 0, reali);
+ set_initializer_compound_value(complex_init, 0, reali);
ir_initializer_t *imagi = create_initializer_const(imag);
- set_initializer_compound_value(initializer, 1, imagi);
- set_entity_initializer(irentity, initializer);
+ set_initializer_compound_value(complex_init, 1, imagi);
+ set_entity_initializer(irentity, complex_init);
}
return;
} else if (!is_type_scalar(init_type)) {
expression_t *const cond = statement->condition;
/* Avoid an explicit body block in case of do ... while (0);. */
- if (is_constant_expression(cond) == EXPR_CLASS_CONSTANT && !fold_constant_to_bool(cond)) {
+ if (is_constant_expression(cond) != EXPR_CLASS_VARIABLE && !fold_constant_to_bool(cond)) {
/* do ... while (0);. */
statement_to_firm(statement->body);
jump_to_target(&continue_target);
/* Create the condition. */
expression_t *const cond = statement->condition;
- if (cond && (is_constant_expression(cond) != EXPR_CLASS_CONSTANT || !fold_constant_to_bool(cond))) {
+ if (cond && (is_constant_expression(cond) == EXPR_CLASS_VARIABLE || !fold_constant_to_bool(cond))) {
jump_target body_target;
init_jump_target(&body_target, NULL);
expression_to_control_flow(cond, &body_target, &break_target);
projects / cparser / blobdiff