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;
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);
}
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)
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;
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)) {
- if (is_Const_null(value)) {
- return new_Const(get_mode_null(dest_mode));
- } else {
- return new_Const(get_mode_one(dest_mode));
- }
+ return create_Const_from_bool(dest_mode, !is_Const_null(value));
}
ir_node *cond = new_d_Cond(dbgi, value);
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.
*
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) {
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_max+1);
set_store(mem);
}
- if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
+ if (!is_type_void(return_type)) {
ir_node *resproj = new_Proj(node, mode_T, pn_Call_T_result);
if (is_type_scalar(return_type)) {
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);
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;
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;
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();
/* 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);
}
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) {
- case 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);
- case EXPR_UNARY_CASES:
- return unary_expression_to_firm(&expression->unary);
- case 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 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;
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;
}
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 ir_switch_table *create_switch_table(const switch_statement_t *statement)
return res;
}
-static void switch_statement_to_firm(switch_statement_t *statement)
+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 *switch_node = NULL;
unsigned n_outs = (unsigned)ir_switch_table_get_n_entries(table) + 1;
switch_node = new_d_Switch(dbgi, expression, n_outs, table);
- first_block = get_cur_block();
}
set_unreachable_now();
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);
+ 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);
}
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;
if (current_switch != NULL) {
ir_node *block = new_immBlock();
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 computed_goto_to_firm(computed_goto_statement_t const *const statement)
+static ir_node *computed_goto_to_firm(computed_goto_statement_t const *const statement)
{
if (!currently_reachable())
- return;
+ return NULL;
ir_node *const irn = expression_to_firm(statement->expression);
dbg_info *const dbgi = get_dbg_info(&statement->base.source_position);
ijmp_list = ijmp;
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;
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 *const stmt)
+static ir_node *statement_to_firm(statement_t *const stmt)
{
#ifndef NDEBUG
assert(!stmt->base.transformed);
#endif
switch (stmt->kind) {
- case STATEMENT_ASM: asm_statement_to_firm( &stmt->asms); return;
- case STATEMENT_CASE_LABEL: case_label_to_firm( &stmt->case_label); return;
- case STATEMENT_COMPOUND: compound_statement_to_firm( &stmt->compound); return;
- case STATEMENT_COMPUTED_GOTO: computed_goto_to_firm( &stmt->computed_goto); return;
- case STATEMENT_DECLARATION: declaration_statement_to_firm(&stmt->declaration); return;
- case STATEMENT_DO_WHILE: do_while_statement_to_firm( &stmt->do_while); return;
- case STATEMENT_EMPTY: /* nothing */ return;
- case STATEMENT_EXPRESSION: expression_statement_to_firm( &stmt->expression); return;
- case STATEMENT_FOR: for_statement_to_firm( &stmt->fors); return;
- case STATEMENT_IF: if_statement_to_firm( &stmt->ifs); return;
- case STATEMENT_LABEL: label_to_firm( &stmt->label); return;
- case STATEMENT_LEAVE: leave_statement_to_firm( &stmt->leave); return;
- case STATEMENT_MS_TRY: ms_try_statement_to_firm( &stmt->ms_try); return;
- case STATEMENT_RETURN: return_statement_to_firm( &stmt->returns); return;
- case STATEMENT_SWITCH: switch_statement_to_firm( &stmt->switchs); return;
- case STATEMENT_WHILE: while_statement_to_firm( &stmt->whiles); return;
-
- case STATEMENT_BREAK: create_jump_statement(stmt, get_break_label()); return;
- case STATEMENT_CONTINUE: create_jump_statement(stmt, continue_label); return;
- case STATEMENT_GOTO: create_jump_statement(stmt, get_label_block(stmt->gotos.label)); return;
+ 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");
}
= skip_typeref(func_type->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;
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;
projects / cparser / blobdiff