#include "besched.h"
#include "beloopana.h"
+#define HASH_LOOP_INFO(info) (HASH_PTR((info)->loop) ^ HASH_PTR((info)->cls))
+
typedef struct _be_loop_info_t {
ir_loop *loop;
const arch_register_class_t *cls;
ir_node *irn;
int max_live;
+ DBG((loop_ana->dbg, LEVEL_1, "Processing Block %+F\n", block));
+
/* determine largest pressure with this block */
live_nodes = be_liveness_end_of_block(loop_ana->birg->lv, aenv, cls, block, live_nodes);
max_live = pset_count(live_nodes);
max_live = MAX(cnt, max_live);
}
+ DBG((loop_ana->dbg, LEVEL_1, "Finished with Block %+F (%s %u)\n", block, cls->name, max_live));
+
del_pset(live_nodes);
return max_live;
}
* @return The highest register pressure in the given loop.
*/
static unsigned be_compute_loop_pressure(be_loopana_t *loop_ana, ir_loop *loop, const arch_register_class_t *cls) {
- int i, max, pressure;
+ int i, max;
+ unsigned pressure;
be_loop_info_t *entry, key;
- DBG((loop_ana->dbg, LEVEL_1, "Processing Loop %d\n", loop->loop_nr));
+ DBG((loop_ana->dbg, LEVEL_1, "\nProcessing Loop %d\n", loop->loop_nr));
assert(get_loop_n_elements(loop) > 0);
pressure = 0;
/* determine maximal pressure in all loop elements */
for (i = 0, max = get_loop_n_elements(loop); i < max; ++i) {
+ unsigned son_pressure;
loop_element elem = get_loop_element(loop, i);
+
switch (*elem.kind) {
case k_ir_node:
- pressure = be_compute_block_pressure(loop_ana, elem.node, cls);
+ son_pressure = be_compute_block_pressure(loop_ana, elem.node, cls);
break;
- case k_ir_loop: {
- unsigned son_pressure = be_compute_loop_pressure(loop_ana, elem.son, cls);
- pressure = MAX(pressure, son_pressure);
+ case k_ir_loop:
+ son_pressure = be_compute_loop_pressure(loop_ana, elem.son, cls);
break;
- }
default:
assert(0);
break;
}
+
+ pressure = MAX(pressure, son_pressure);
}
DBG((loop_ana->dbg, LEVEL_1, "Done with loop %d, pressure %u for class %s\n", loop->loop_nr, pressure, cls->name));
/* update info in set */
- key.loop = loop;
- key.loop = 0;
- key.cls = cls;
- entry = set_insert(loop_ana->data, &key, sizeof(key), HASH_PTR(loop));
+ key.loop = loop;
+ key.cls = cls;
+ key.max_pressure = 0;
+ entry = set_insert(loop_ana->data, &key, sizeof(key), HASH_LOOP_INFO(&key));
entry->max_pressure = MAX(entry->max_pressure, pressure);
return pressure;
* Compute the register pressure for a class of all loops in the birg.
* @param birg The backend irg object
* @param cls The register class to compute the pressure for
- * @return The loop analysation object.
+ * @return The loop analysis object.
*/
be_loopana_t *be_new_loop_pressure_cls(be_irg_t *birg, const arch_register_class_t *cls) {
- be_loopana_t *loop_ana = xmalloc(sizeof(loop_ana));
+ be_loopana_t *loop_ana = xmalloc(sizeof(*loop_ana));
loop_ana->data = new_set(cmp_loop_info, 16);
loop_ana->birg = birg;
FIRM_DBG_REGISTER(loop_ana->dbg, "firm.be.loopana");
+ DBG((loop_ana->dbg, LEVEL_1, "\n=====================================================\n", cls->name));
+ DBG((loop_ana->dbg, LEVEL_1, " Computing register pressure for class %s:\n", cls->name));
+ DBG((loop_ana->dbg, LEVEL_1, "=====================================================\n", cls->name));
+
be_compute_loop_pressure(loop_ana, get_irg_loop(birg->irg), cls);
return loop_ana;
/**
* Compute the register pressure for all classes of all loops in the birg.
* @param birg The backend irg object
- * @return The loop analysation object.
+ * @return The loop analysis object.
*/
be_loopana_t *be_new_loop_pressure(be_irg_t *birg) {
- be_loopana_t *loop_ana = xmalloc(sizeof(loop_ana));
+ be_loopana_t *loop_ana = xmalloc(sizeof(*loop_ana));
ir_loop *irg_loop = get_irg_loop(birg->irg);
int i;
for (i = arch_isa_get_n_reg_class(birg->main_env->arch_env->isa) - 1; i >= 0; --i) {
const arch_register_class_t *cls = arch_isa_get_reg_class(birg->main_env->arch_env->isa, i);
+ DBG((loop_ana->dbg, LEVEL_1, "\n=====================================================\n", cls->name));
+ DBG((loop_ana->dbg, LEVEL_1, " Computing register pressure for class %s:\n", cls->name));
+ DBG((loop_ana->dbg, LEVEL_1, "=====================================================\n", cls->name));
be_compute_loop_pressure(loop_ana, irg_loop, cls);
}
key.loop = loop;
key.cls = cls;
- entry = set_find(loop_ana->data, &key, sizeof(key), HASH_PTR(&key));
+ entry = set_find(loop_ana->data, &key, sizeof(key), HASH_LOOP_INFO(&key));
if (entry)
pressure = entry->max_pressure;
}
/**
- * Frees loop analysation object.
+ * Frees the loop analysis object.
*/
void be_free_loop_pressure(be_loopana_t *loop_ana) {
del_set(loop_ana->data);