static void while_statement_to_firm(while_statement_t *statement)
{
- /* create the header block */
- ir_node *header_block = new_immBlock();
- if (get_cur_block() != NULL) {
- ir_node *const jmp = new_Jmp();
- add_immBlock_pred(header_block, jmp);
- }
-
- /* the loop body */
- ir_node *old_continue_label = continue_label;
- ir_node *old_break_label = break_label;
- continue_label = header_block;
- break_label = NULL;
-
- ir_node *body_block = new_immBlock();
- set_cur_block(body_block);
- statement_to_firm(statement->body);
- ir_node *false_block = break_label;
-
- assert(continue_label == header_block);
- continue_label = old_continue_label;
- break_label = old_break_label;
-
+ /* Create the header block */
+ ir_node *const header_block = new_immBlock();
if (get_cur_block() != NULL) {
- ir_node *const jmp = new_Jmp();
- add_immBlock_pred(header_block, jmp);
+ add_immBlock_pred(header_block, new_Jmp());
}
- /* shortcut for while(true) */
- if (is_constant_expression(statement->condition)
- && fold_constant_to_bool(statement->condition) != 0) {
- set_cur_block(header_block);
- ir_node *header_jmp = new_Jmp();
- add_immBlock_pred(body_block, header_jmp);
+ /* Create the condition. */
+ ir_node * body_block;
+ ir_node * false_block;
+ expression_t *const cond = statement->condition;
+ if (is_constant_expression(cond) && fold_constant_to_bool(cond)) {
+ /* Shortcut for while (true). */
+ body_block = header_block;
+ false_block = NULL;
- keep_alive(body_block);
- keep_all_memory(body_block);
- set_cur_block(body_block);
+ keep_alive(header_block);
+ keep_all_memory(header_block);
} else {
- if (false_block == NULL) {
- false_block = new_immBlock();
- }
+ body_block = new_immBlock();
+ false_block = new_immBlock();
- /* create the condition */
set_cur_block(header_block);
+ create_condition_evaluation(cond, body_block, false_block);
+ mature_immBlock(body_block);
+ }
- create_condition_evaluation(statement->condition, body_block,
- false_block);
+ ir_node *const old_continue_label = continue_label;
+ ir_node *const old_break_label = break_label;
+ continue_label = header_block;
+ break_label = false_block;
+
+ /* Create the loop body. */
+ set_cur_block(body_block);
+ statement_to_firm(statement->body);
+ if (get_cur_block() != NULL) {
+ add_immBlock_pred(header_block, new_Jmp());
}
- mature_immBlock(body_block);
mature_immBlock(header_block);
+ assert(false_block == NULL || false_block == break_label);
+ false_block = break_label;
if (false_block != NULL) {
mature_immBlock(false_block);
}
-
set_cur_block(false_block);
+
+ assert(continue_label == header_block);
+ continue_label = old_continue_label;
+ break_label = old_break_label;
}
static void do_while_statement_to_firm(do_while_statement_t *statement)
if (get_cur_block() != NULL) {
ir_node *body_jmp = new_Jmp();
add_immBlock_pred(header_block, body_jmp);
- mature_immBlock(header_block);
}
if (false_block == NULL) {
}
/* create the condition */
+ mature_immBlock(header_block);
set_cur_block(header_block);
create_condition_evaluation(statement->condition, body_block, false_block);
mature_immBlock(body_block);
- mature_immBlock(header_block);
mature_immBlock(false_block);
set_cur_block(false_block);
create_local_declaration(entity);
}
- ir_node *jmp = NULL;
if (get_cur_block() != NULL) {
entity = statement->scope.entities;
for ( ; entity != NULL; entity = entity->base.next) {
if (statement->initialisation != NULL) {
expression_to_firm(statement->initialisation);
}
+ }
- jmp = new_Jmp();
+ /* Create the header block */
+ ir_node *const header_block = new_immBlock();
+ if (get_cur_block() != NULL) {
+ add_immBlock_pred(header_block, new_Jmp());
}
+ /* Create the condition. */
+ ir_node *body_block;
+ ir_node *false_block;
+ if (statement->condition != NULL) {
+ body_block = new_immBlock();
+ false_block = new_immBlock();
- /* create the step block */
- ir_node *const step_block = new_immBlock();
- set_cur_block(step_block);
- if (statement->step != NULL) {
- expression_to_firm(statement->step);
- }
- ir_node *const step_jmp = new_Jmp();
+ set_cur_block(header_block);
+ create_condition_evaluation(statement->condition, body_block, false_block);
+ mature_immBlock(body_block);
+ } else {
+ /* for-ever. */
+ body_block = header_block;
+ false_block = NULL;
- /* create the header block */
- ir_node *const header_block = new_immBlock();
- set_cur_block(header_block);
- if (jmp != NULL) {
- add_immBlock_pred(header_block, jmp);
+ keep_alive(header_block);
+ keep_all_memory(header_block);
}
- add_immBlock_pred(header_block, step_jmp);
- /* the false block */
- ir_node *const false_block = new_immBlock();
+ /* Create the step block, if necessary. */
+ ir_node * step_block = header_block;
+ expression_t *const step = statement->step;
+ if (step != NULL) {
+ step_block = new_immBlock();
+ }
- /* the loop body */
ir_node *const old_continue_label = continue_label;
ir_node *const old_break_label = break_label;
continue_label = step_block;
break_label = false_block;
- ir_node *const body_block = new_immBlock();
+ /* Create the loop body. */
set_cur_block(body_block);
statement_to_firm(statement->body);
-
- assert(continue_label == step_block);
- assert(break_label == false_block);
- continue_label = old_continue_label;
- break_label = old_break_label;
-
if (get_cur_block() != NULL) {
add_immBlock_pred(step_block, new_Jmp());
}
- /* create the condition */
- set_cur_block(header_block);
- if (statement->condition != NULL) {
- create_condition_evaluation(statement->condition, body_block,
- false_block);
- } else {
- keep_alive(header_block);
- keep_all_memory(header_block);
- add_immBlock_pred(body_block, new_Jmp());
+ /* Create the step code. */
+ if (step != NULL) {
+ mature_immBlock(step_block);
+ set_cur_block(step_block);
+ expression_to_firm(step);
+ if (get_cur_block() != NULL) {
+ add_immBlock_pred(header_block, new_Jmp());
+ }
}
- mature_immBlock(body_block);
- mature_immBlock(false_block);
- mature_immBlock(step_block);
mature_immBlock(header_block);
- mature_immBlock(false_block);
-
+ assert(false_block == NULL || false_block == break_label);
+ false_block = break_label;
+ if (false_block != NULL) {
+ mature_immBlock(false_block);
+ }
set_cur_block(false_block);
+
+ assert(continue_label == step_block);
+ continue_label = old_continue_label;
+ break_label = old_break_label;
}
static void create_jump_statement(const statement_t *statement,
projects / cparser / blobdiff