}
}
-#define INVALID_TYPE ((ir_type_ptr)-1)
+#define INVALID_TYPE ((ir_type*)-1)
enum {
COMPOUND_IS_STRUCT = false,
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;
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);
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 *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);
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);
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);
}
/**
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);
}
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
#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);
return label_address_to_firm(&expression->label_address);
case EXPR_ERROR:
- return error_to_firm(expression);
+ 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)
{
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);
false_block = new_immBlock();
create_condition_evaluation(statement->condition, true_block, false_block);
mature_immBlock(true_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;
- 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;
+ mature_immBlock(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();
- }
- add_immBlock_pred(fallthrough_block, new_Jmp());
+ ir_node *fallthrough_block = get_cur_block();
+
+ /* Create the false statement. */
+ set_cur_block(false_block);
+ if (statement->false_statement != NULL) {
+ statement_to_firm(statement->false_statement);
}
- /* Handle the block after the if-statement. */
- if (fallthrough_block != NULL) {
- mature_immBlock(fallthrough_block);
+ /* 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);
+ }
+ set_cur_block(fallthrough_block);
}
- set_cur_block(fallthrough_block);
}
/* Create a jump node which jumps into target_block, if the current block is
statement_to_firm(statement->statement);
}
-static void goto_to_firm(const goto_statement_t *statement)
+static void computed_goto_to_firm(computed_goto_statement_t const *const 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 *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();
}
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);
/**
* Transform a statement.
*/
-static void statement_to_firm(statement_t *statement)
+static void 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: 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_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);
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 */
projects / cparser / blobdiff