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;
}
}
-#define INVALID_TYPE ((ir_type_ptr)-1)
+#define INVALID_TYPE ((ir_type*)-1)
enum {
COMPOUND_IS_STRUCT = false,
return new_d_SymConst(dbgi, mode_P, sym, symconst_addr_ent);
}
+static ir_node *create_conv_from_b(dbg_info *dbgi, ir_node *value,
+ ir_mode *dest_mode)
+{
+ if (is_Const(value)) {
+ if (is_Const_null(value)) {
+ return new_Const(get_mode_null(dest_mode));
+ } else {
+ return new_Const(get_mode_one(dest_mode));
+ }
+ }
+
+ ir_node *cond = new_d_Cond(dbgi, value);
+ ir_node *proj_true = new_Proj(cond, mode_X, pn_Cond_true);
+ ir_node *proj_false = new_Proj(cond, mode_X, pn_Cond_false);
+ ir_node *tblock = new_Block(1, &proj_true);
+ ir_node *fblock = new_Block(1, &proj_false);
+ set_cur_block(tblock);
+ ir_node *const1 = new_Const(get_mode_one(dest_mode));
+ ir_node *tjump = new_Jmp();
+ set_cur_block(fblock);
+ ir_node *const0 = new_Const(get_mode_null(dest_mode));
+ ir_node *fjump = new_Jmp();
+
+ ir_node *in[2] = { tjump, fjump };
+ ir_node *mergeblock = new_Block(2, in);
+ set_cur_block(mergeblock);
+ ir_node *phi_in[2] = { const1, const0 };
+ ir_node *phi = new_Phi(2, phi_in, dest_mode);
+ return phi;
+}
+
static ir_node *create_conv(dbg_info *dbgi, ir_node *value, ir_mode *dest_mode)
{
ir_mode *value_mode = get_irn_mode(value);
ir_node *zero = new_Const(get_mode_null(value_mode));
ir_node *cmp = new_d_Cmp(dbgi, value, zero, ir_relation_less_greater);
return cmp;
+ } else if (value_mode == mode_b) {
+ return create_conv_from_b(dbgi, value, dest_mode);
}
return new_d_Conv(dbgi, value, dest_mode);
ir_node *irn = new_d_Builtin(dbgi, get_store(), 3, in, ir_bk_inner_trampoline, get_unknown_type());
set_store(new_Proj(irn, mode_M, pn_Builtin_M));
- return new_Proj(irn, mode, pn_Builtin_1_result);
+ return new_Proj(irn, mode, pn_Builtin_max+1);
}
/**
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);
if (!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) {
assert(is_type_scalar(return_type));
ir_mode *mode = get_ir_mode_storage(return_type);
- result = new_Proj(node, mode, pn_Builtin_1_result);
+ result = new_Proj(node, mode, pn_Builtin_max+1);
ir_mode *mode_arith = get_ir_mode_arithmetic(return_type);
result = create_conv(NULL, result, mode_arith);
}
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);
- 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);
+ assert(current_ir_graph == get_const_code_irg());
+ current_ir_graph = old_current_ir_graph;
+
+ 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_to_firm(
+ const compound_literal_expression_t *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 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:
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();
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");
#endif
switch (expression->kind) {
- EXPR_LITERAL_CASES
+ case EXPR_LITERAL_CASES:
return literal_to_firm(&expression->literal);
case EXPR_STRING_LITERAL:
return string_to_firm(&expression->base.source_position, "str.%u",
return reference_expression_enum_value_to_firm(&expression->reference);
case EXPR_CALL:
return call_expression_to_firm(&expression->call);
- EXPR_UNARY_CASES
+ case EXPR_UNARY_CASES:
return unary_expression_to_firm(&expression->unary);
- EXPR_BINARY_CASES
+ case EXPR_BINARY_CASES:
return binary_expression_to_firm(&expression->binary);
case EXPR_ARRAY_ACCESS:
return array_access_to_firm(&expression->array_access);
}
-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)
{
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);
if (initializer->kind == INITIALIZER_VALUE) {
initializer_value_t *initializer_value = &initializer->value;
dbg_info *dbgi = get_dbg_info(&entity->base.source_position);
+ expression_t *value = initializer_value->value;
+ type_t *init_type = value->base.type;
+ type_t *skipped = skip_typeref(init_type);
+
+ if (!is_type_scalar(skipped)) {
+ /* 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;
+ }
- ir_node *value = expression_to_firm(initializer_value->value);
+ ir_node *node = expression_to_firm(initializer_value->value);
- 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);
+ 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);
set_unreachable_now();
}
+static ir_switch_table *create_switch_table(const switch_statement_t *statement)
+{
+ /* determine number of cases */
+ size_t n_cases = 0;
+ for (case_label_statement_t *l = statement->first_case; l != NULL;
+ l = l->next) {
+ /* default case */
+ if (l->expression == NULL)
+ continue;
+ if (l->is_empty_range)
+ continue;
+ ++n_cases;
+ }
+
+ ir_switch_table *res = ir_new_switch_table(current_ir_graph, n_cases);
+ size_t i = 0;
+ for (case_label_statement_t *l = statement->first_case; l != NULL;
+ l = l->next) {
+ if (l->expression == NULL) {
+ l->pn = pn_Switch_default;
+ continue;
+ }
+ if (l->is_empty_range)
+ continue;
+ ir_tarval *min = fold_constant_to_tarval(l->expression);
+ ir_tarval *max = min;
+ long pn = (long) i+1;
+ if (l->end_range != NULL)
+ max = fold_constant_to_tarval(l->end_range);
+ ir_switch_table_set(res, i++, min, max, pn);
+ l->pn = pn;
+ }
+ return res;
+}
+
static void switch_statement_to_firm(switch_statement_t *statement)
{
ir_node *first_block = NULL;
dbg_info *dbgi = get_dbg_info(&statement->base.source_position);
- ir_node *cond = NULL;
+ ir_node *switch_node = NULL;
if (currently_reachable()) {
ir_node *expression = expression_to_firm(statement->expression);
- cond = new_d_Cond(dbgi, expression);
- first_block = get_cur_block();
+ ir_switch_table *table = create_switch_table(statement);
+ unsigned n_outs = (unsigned)ir_switch_table_get_n_entries(table) + 1;
+
+ switch_node = new_d_Switch(dbgi, expression, n_outs, table);
+ first_block = get_cur_block();
}
set_unreachable_now();
- ir_node *const old_switch_cond = current_switch_cond;
+ ir_node *const old_switch = current_switch;
ir_node *const old_break_label = break_label;
const bool old_saw_default_label = saw_default_label;
saw_default_label = false;
- current_switch_cond = cond;
+ current_switch = switch_node;
break_label = NULL;
- switch_statement_t *const old_switch = current_switch;
- current_switch = statement;
-
- /* determine a free number for the default label */
- unsigned long num_cases = 0;
- long default_proj_nr = 0;
- for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
- if (l->expression == NULL) {
- /* default case */
- continue;
- }
- if (l->last_case >= l->first_case)
- num_cases += l->last_case - l->first_case + 1;
- if (l->last_case > default_proj_nr)
- default_proj_nr = l->last_case;
- }
-
- if (default_proj_nr == LONG_MAX) {
- /* Bad: an overflow will occur, we cannot be sure that the
- * maximum + 1 is a free number. Scan the values a second
- * time to find a free number.
- */
- unsigned char *bits = xmalloc((num_cases + 7) >> 3);
-
- memset(bits, 0, (num_cases + 7) >> 3);
- for (case_label_statement_t *l = statement->first_case; l != NULL; l = l->next) {
- if (l->expression == NULL) {
- /* default case */
- continue;
- }
- unsigned long start = l->first_case > 0 ? (unsigned long)l->first_case : 0;
- if (start < num_cases && l->last_case >= 0) {
- unsigned long end = (unsigned long)l->last_case < num_cases ?
- (unsigned long)l->last_case : num_cases - 1;
- for (unsigned long cns = start; cns <= end; ++cns) {
- bits[cns >> 3] |= (1 << (cns & 7));
- }
- }
- }
- /* We look at the first num_cases constants:
- * Either they are dense, so we took the last (num_cases)
- * one, or they are not dense, so we will find one free
- * there...
- */
- unsigned long i;
- for (i = 0; i < num_cases; ++i)
- if ((bits[i >> 3] & (1 << (i & 7))) == 0)
- break;
-
- free(bits);
- default_proj_nr = i;
- } else {
- ++default_proj_nr;
- }
- statement->default_proj_nr = default_proj_nr;
- /* safety check: cond might already be folded to a Bad */
- if (cond != NULL && is_Cond(cond)) {
- set_Cond_default_proj(cond, default_proj_nr);
- }
statement_to_firm(statement->body);
if (!saw_default_label && first_block != NULL) {
set_cur_block(first_block);
- ir_node *const proj = new_d_Proj(dbgi, cond, mode_X, default_proj_nr);
+ ir_node *proj = new_d_Proj(dbgi, switch_node, mode_X, pn_Switch_default);
add_immBlock_pred(get_break_label(), proj);
}
}
set_cur_block(break_label);
- assert(current_switch_cond == cond);
- current_switch = old_switch;
- current_switch_cond = old_switch_cond;
- break_label = old_break_label;
- saw_default_label = old_saw_default_label;
+ assert(current_switch == switch_node);
+ current_switch = old_switch;
+ break_label = old_break_label;
+ saw_default_label = old_saw_default_label;
}
static void case_label_to_firm(const case_label_statement_t *statement)
if (statement->is_empty_range)
return;
- ir_node *block = new_immBlock();
- /* Fallthrough from previous case */
- jump_if_reachable(block);
+ if (current_switch != NULL) {
+ ir_node *block = new_immBlock();
+ /* Fallthrough from previous case */
+ jump_if_reachable(block);
- if (current_switch_cond != NULL) {
- set_cur_block(get_nodes_block(current_switch_cond));
- dbg_info *const dbgi = get_dbg_info(&statement->base.source_position);
- if (statement->expression != NULL) {
- long pn = statement->first_case;
- long end_pn = statement->last_case;
- assert(pn <= end_pn);
- /* create jumps for all cases in the given range */
- do {
- ir_node *const proj = new_d_Proj(dbgi, current_switch_cond, mode_X, pn);
- add_immBlock_pred(block, proj);
- } while (pn++ < end_pn);
- } else {
+ ir_node *const proj = new_Proj(current_switch, mode_X, statement->pn);
+ add_immBlock_pred(block, proj);
+ if (statement->expression == NULL)
saw_default_label = true;
- ir_node *const proj = new_d_Proj(dbgi, current_switch_cond, mode_X,
- current_switch->default_proj_nr);
- add_immBlock_pred(block, proj);
- }
- }
- mature_immBlock(block);
- set_cur_block(block);
+ mature_immBlock(block);
+ set_cur_block(block);
+ }
statement_to_firm(statement->statement);
}
statement_to_firm(statement->statement);
}
+static void computed_goto_to_firm(computed_goto_statement_t const *const statement)
+{
+ if (!currently_reachable())
+ return;
+
+ 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_unreachable_now();
+}
+
static void goto_to_firm(const goto_statement_t *statement)
{
if (!currently_reachable())
return;
- 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 *block = get_label_block(statement->label);
+ ir_node *jmp = new_Jmp();
+ add_immBlock_pred(block, jmp);
- 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();
}
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);
case STATEMENT_LABEL:
label_to_firm(&statement->label);
return;
+ case STATEMENT_COMPUTED_GOTO:
+ computed_goto_to_firm(&statement->computed_goto);
+ return;
case STATEMENT_GOTO:
goto_to_firm(&statement->gotos);
return;
* @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);
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 */
/* just to be sure */
continue_label = NULL;
break_label = NULL;
- current_switch_cond = NULL;
+ current_switch = NULL;
current_translation_unit = unit;
init_ir_types();