static const arch_env_t *arch_env;
static be_lv_t *lv;
static ir_node *current_node;
-ir_node ***register_values;
+ir_node **register_values;
static void clear_reg_value(ir_node *node)
{
- const arch_register_t *reg;
- const arch_register_class_t *cls;
- unsigned reg_idx;
- unsigned cls_idx;
+ const arch_register_t *reg;
+ unsigned reg_idx;
if (!mode_is_data(get_irn_mode(node)))
return;
- reg = arch_get_irn_register(node);
+ reg = arch_get_irn_register(node);
if (reg == NULL) {
panic("No register assigned at %+F", node);
}
if (reg->type & arch_register_type_virtual)
return;
- cls = arch_register_get_class(reg);
- reg_idx = arch_register_get_index(reg);
- cls_idx = arch_register_class_index(cls);
+ reg_idx = reg->global_index;
- //assert(register_values[cls_idx][reg_idx] != NULL);
DB((dbg, LEVEL_1, "Clear Register %s\n", reg->name));
- register_values[cls_idx][reg_idx] = NULL;
+ register_values[reg_idx] = NULL;
}
static void set_reg_value(ir_node *node)
{
- const arch_register_t *reg;
- const arch_register_class_t *cls;
- unsigned reg_idx;
- unsigned cls_idx;
+ const arch_register_t *reg;
+ unsigned reg_idx;
if (!mode_is_data(get_irn_mode(node)))
return;
}
if (reg->type & arch_register_type_virtual)
return;
- cls = arch_register_get_class(reg);
- reg_idx = arch_register_get_index(reg);
- cls_idx = arch_register_class_index(cls);
+ reg_idx = reg->global_index;
DB((dbg, LEVEL_1, "Set Register %s: %+F\n", reg->name, node));
- register_values[cls_idx][reg_idx] = node;
+ register_values[reg_idx] = node;
}
static void clear_defs(ir_node *node)
static void be_peephole_before_exchange(const ir_node *old_node,
ir_node *new_node)
{
- const arch_register_t *reg;
- const arch_register_class_t *cls;
- unsigned reg_idx;
- unsigned cls_idx;
- bool old_is_current = false;
+ const arch_register_t *reg;
+ unsigned reg_idx;
+ bool old_is_current = false;
DB((dbg, LEVEL_1, "About to exchange and kill %+F with %+F\n", old_node, new_node));
assert(reg == arch_get_irn_register(new_node) &&
"KILLING a node and replacing by different register is not allowed");
- cls = arch_register_get_class(reg);
- reg_idx = arch_register_get_index(reg);
- cls_idx = arch_register_class_index(cls);
-
- if (register_values[cls_idx][reg_idx] == old_node || old_is_current) {
- register_values[cls_idx][reg_idx] = new_node;
+ reg_idx = reg->global_index;
+ if (register_values[reg_idx] == old_node || old_is_current) {
+ register_values[reg_idx] = new_node;
}
be_liveness_remove(lv, old_node);
*/
static void process_block(ir_node *block, void *data)
{
- unsigned n_classes;
- unsigned i;
int l;
(void) data;
/* construct initial register assignment */
- n_classes = arch_env->n_register_classes;
- for (i = 0; i < n_classes; ++i) {
- const arch_register_class_t *cls = &arch_env->register_classes[i];
- unsigned n_regs = arch_register_class_n_regs(cls);
- memset(register_values[i], 0, sizeof(ir_node*) * n_regs);
- }
+ memset(register_values, 0, sizeof(ir_node*) * arch_env->n_registers);
assert(lv->nodes && "live sets must be computed");
DB((dbg, LEVEL_1, "\nProcessing block %+F (from end)\n", block));
void be_peephole_opt(ir_graph *irg)
{
- unsigned n_classes;
- unsigned i;
-
/* we sometimes find BadE nodes in float apps like optest_float.c or
* kahansum.c for example... */
be_liveness_invalidate(be_get_irg_liveness(irg));
arch_env = be_get_irg_arch_env(irg);
lv = be_get_irg_liveness(irg);
- n_classes = arch_env->n_register_classes;
- register_values = XMALLOCN(ir_node**, n_classes);
- for (i = 0; i < n_classes; ++i) {
- const arch_register_class_t *cls = &arch_env->register_classes[i];
- unsigned n_regs = arch_register_class_n_regs(cls);
- register_values[i] = XMALLOCN(ir_node*, n_regs);
- }
+ register_values = XMALLOCN(ir_node*, arch_env->n_registers);
irg_block_walk_graph(irg, process_block, NULL, NULL);
- for (i = 0; i < n_classes; ++i) {
- xfree(register_values[i]);
- }
xfree(register_values);
}