2 * This file calls the corresponding statistic functions for
3 * some backend statistics.
4 * @author Christian Wuerdig
11 #ifdef FIRM_STATISTICS
17 #include "dbginfo_t.h"
18 #include "firmstat_t.h"
27 typedef struct _be_stat_irg_t {
28 ir_graph *irg; /**< the irg, the statistic is about */
29 pset *phases; /**< node statistics for each phase */
30 struct obstack obst; /**< the obstack containing the information */
31 const arch_env_t *arch_env; /**< the current arch env */
34 typedef struct _be_stat_phase_t {
35 const arch_env_t *arch_env; /**< the current arch env */
36 const char *phase; /**< the name of the phase the statistic is about */
37 unsigned long num_nodes; /**< overall number of reachable nodes in the irg */
38 unsigned long num_data; /**< number of data nodes ((mode_datab && ! Proj && ! Phi) || mode_T) */
39 unsigned long num_proj; /**< number of Projs */
40 unsigned long num_phi; /**< number of Phis */
41 unsigned long num_load; /**< number of Loads */
42 unsigned long num_store; /**< number of Stores */
43 unsigned long num_spill; /**< number of Spills */
44 unsigned long num_reload; /**< number of Reloads */
47 static set *be_stat_data = NULL;
49 static int cmp_stat_phase(const void *a, const void *b) {
50 const be_stat_phase_t *p1 = a;
51 const be_stat_phase_t *p2 = b;
53 return p1->phase != p2->phase;
56 static int cmp_stat_data(const void *a, const void *b, size_t len) {
57 const be_stat_irg_t *p1 = a;
58 const be_stat_irg_t *p2 = b;
60 return p1->irg != p2->irg;
63 static be_stat_irg_t *find_stat_irg_entry(ir_graph *irg) {
64 be_stat_irg_t *entry, key;
70 entry = set_find(be_stat_data, &key, sizeof(key), HASH_PTR(irg));
75 static be_stat_irg_t *get_stat_irg_entry(ir_graph *irg) {
76 be_stat_irg_t *entry, key;
81 entry = find_stat_irg_entry(irg);
85 entry = set_insert(be_stat_data, &key, sizeof(key), HASH_PTR(irg));
91 struct a_pressure_walker {
97 * Collect reg pressure statistics per block and per class.
99 static void stat_reg_pressure_block(ir_node *block, void *data) {
100 struct a_pressure_walker *env = data;
101 be_irg_t *birg = env->birg;
102 const arch_env_t *aenv = birg->main_env->arch_env;
103 int i, n = arch_isa_get_n_reg_class(aenv->isa);
105 for (i = 0; i < n; i++) {
106 const arch_register_class_t *cls = arch_isa_get_reg_class(aenv->isa, i);
108 pset *live_nodes = pset_new_ptr(64);
111 live_nodes = be_liveness_end_of_block(env->lv, aenv, cls, block, live_nodes);
112 max_live = pset_count(live_nodes);
114 sched_foreach_reverse(block, irn) {
120 live_nodes = be_liveness_transfer(aenv, cls, irn, live_nodes);
121 cnt = pset_count(live_nodes);
122 max_live = cnt < max_live ? max_live : cnt;
125 stat_be_block_regpressure(birg->irg, block, max_live, cls->name);
129 void be_do_stat_reg_pressure(be_irg_t *birg) {
130 if (stat_is_active()) {
131 struct a_pressure_walker w;
134 w.lv = be_liveness(birg->irg);
135 /* Collect register pressure information for each block */
136 irg_block_walk_graph(birg->irg, stat_reg_pressure_block, NULL, &w);
137 be_liveness_free(w.lv);
142 * Notify statistic module about amount of ready nodes.
144 void be_do_stat_sched_ready(ir_node *block, nodeset *ready_set) {
145 if (stat_is_active()) {
146 stat_be_block_sched_ready(get_irn_irg(block), block, MIN(nodeset_count(ready_set), 5));
151 * Pass information about a perm to the statistic module.
153 void be_do_stat_perm(const char *class_name, int n_regs, ir_node *perm, ir_node *block, int n, int real_size) {
154 if (stat_is_active()) {
155 stat_be_block_stat_perm(class_name, n_regs, perm, block, n, real_size);
160 * Pass information about a cycle or chain in a perm to the statistic module.
162 void be_do_stat_permcycle(const char *class_name, ir_node *perm, ir_node *block, int is_chain, int n_elems, int n_ops) {
163 if (stat_is_active()) {
164 stat_be_block_stat_permcycle(class_name, perm, block, is_chain, n_elems, n_ops);
169 * Updates nodes statistics.
171 static void do_nodes_stat(ir_node *irn, void *env) {
172 be_stat_phase_t *phase = env;
175 arch_irn_class_t irn_class;
180 mode = get_irn_mode(irn);
181 opc = get_irn_opcode(irn);
185 /* check for nodes we want to ignore */
186 if (be_is_Keep(irn) ||
187 be_is_CopyKeep(irn) ||
192 if (is_Proj(irn) && (mode != mode_X)) {
196 else if (is_Phi(irn)) {
200 else if (mode_is_datab(mode) || ((mode == mode_T) && ! is_be_node(irn)) || (is_Proj(irn) && (mode == mode_X)))
205 else if (opc == iro_Store)
208 irn_class = arch_irn_classify(phase->arch_env, irn);
209 if (irn_class & arch_irn_class_spill)
211 else if (irn_class & arch_irn_class_reload)
213 else if (irn_class & arch_irn_class_stackparam)
215 else if (irn_class & arch_irn_class_load)
217 else if (irn_class & arch_irn_class_store)
222 * Collects node statistics.
224 * @param irg the to do statistics for
225 * @param phase the phase to collect the statistic for
227 void be_do_stat_nodes(ir_graph *irg, const char *phase) {
228 be_stat_irg_t *irg_entry;
229 be_stat_phase_t *phase_entry, phase_key;
231 irg_entry = find_stat_irg_entry(irg);
236 phase_key.phase = phase;
237 phase_entry = pset_find_ptr(irg_entry->phases, &phase_key);
240 phase_entry = obstack_alloc(&irg_entry->obst, sizeof(*phase_entry));
241 phase_entry = pset_insert(irg_entry->phases, phase_entry, HASH_PTR(phase));
243 memset(phase_entry, 0, sizeof(*phase_entry));
245 phase_entry->phase = phase;
246 phase_entry->arch_env = irg_entry->arch_env;
248 irg_walk_blkwise_graph(irg_entry->irg, NULL, do_nodes_stat, phase_entry);
252 * Dumps statistics about nodes (called from dump_snapshot)
254 static void be_dump_node_stat(dumper_t *dmp, graph_entry_t *entry) {
255 be_stat_irg_t *stat_irg = find_stat_irg_entry(entry->irg);
256 be_stat_phase_t *phase;
258 if (! stat_irg || ! stat_irg->phases)
261 fprintf(dmp->f, "===> BE NODE STATISTIC BEGIN <===\n");
263 foreach_pset(stat_irg->phases, phase) {
264 fprintf(dmp->f, "--> Phase: %s\n", phase->phase);
265 fprintf(dmp->f, "# nodes: %ld\n", phase->num_nodes);
266 fprintf(dmp->f, "# data nodes: %ld\n", phase->num_data);
267 fprintf(dmp->f, "# Proj: %ld\n", phase->num_proj);
268 fprintf(dmp->f, "# Phi: %ld\n", phase->num_phi);
269 fprintf(dmp->f, "# Load: %ld\n", phase->num_load);
270 fprintf(dmp->f, "# Store: %ld\n", phase->num_store);
271 fprintf(dmp->f, "# Spill: %ld\n", phase->num_spill);
272 fprintf(dmp->f, "# Reload: %ld\n", phase->num_reload);
275 fprintf(dmp->f, "===> BE NODE STATISTIC END <===\n");
279 * Returns a be statistic object for the given irg.
281 void be_stat_init_irg(const arch_env_t *arch_env, ir_graph *irg) {
282 static int reg_func = 1;
284 if (stat_is_active()) {
285 be_stat_irg_t *stat_irg;
288 be_stat_data = new_set(cmp_stat_data, 8);
290 stat_irg = get_stat_irg_entry(irg);
292 stat_irg->phases = new_pset(cmp_stat_phase, 8);
293 stat_irg->arch_env = arch_env;
294 obstack_init(&stat_irg->obst);
297 /* first init: register dumper */
298 stat_register_dumper_func(be_dump_node_stat);
306 void (be_stat_init_irg)(const arch_env_t *arch_env, ir_graph *irg) {}
307 void (be_do_stat_nodes)(ir_graph *irg, const char *phase) {}
308 void (be_do_stat_reg_pressure)(be_irg_t *birg) {}
309 void (be_do_stat_sched_ready)(ir_node *block, nodeset *ready_set) {}
310 void (be_do_stat_perm)(const char *class_name, int n_regs, ir_node *perm, ir_node *block, int n, int real_size) {}
312 #endif /* FIRM_STATISTICS */