/*
- * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
#include "firmstat_t.h"
#include "irtools.h"
#include "pset.h"
+#include "statev.h"
#include "bearch_t.h"
#include "bestat.h"
static int cmp_stat_data(const void *a, const void *b, size_t len) {
const be_stat_irg_t *p1 = a;
const be_stat_irg_t *p2 = b;
+ (void) len;
return p1->irg != p2->irg;
}
return entry;
}
-struct a_pressure_walker {
+typedef struct pressure_walker_env_t pressure_walker_env_t;
+struct pressure_walker_env_t {
be_irg_t *birg;
- be_lv_t *lv;
+ be_lv_t *lv;
+ double insn_count;
+ double regpressure;
+ int max_pressure;
+ const arch_register_class_t *cls;
};
-/**
- * Collect reg pressure statistics per block and per class.
- */
-static void stat_reg_pressure_block(ir_node *block, void *data) {
- struct a_pressure_walker *env = data;
+static void check_reg_pressure_class(pressure_walker_env_t *env,
+ ir_node *block,
+ const arch_register_class_t *cls)
+{
be_irg_t *birg = env->birg;
ir_graph *irg = be_get_birg_irg(birg);
const arch_env_t *aenv = be_get_birg_arch_env(birg);
- int i, n = arch_isa_get_n_reg_class(aenv->isa);
+ ir_node *irn;
+ ir_nodeset_t live_nodes;
+ int max_live;
+
+ ir_nodeset_init(&live_nodes);
+ be_liveness_end_of_block(env->lv, aenv, cls, block, &live_nodes);
+ max_live = ir_nodeset_size(&live_nodes);
+ env->regpressure += max_live;
+
+ sched_foreach_reverse(block, irn) {
+ int cnt;
+
+ if(is_Phi(irn))
+ break;
+
+ be_liveness_transfer(aenv, cls, irn, &live_nodes);
+ cnt = ir_nodeset_size(&live_nodes);
+ max_live = cnt < max_live ? max_live : cnt;
+ env->regpressure += cnt;
+ env->insn_count++;
+ }
- for (i = 0; i < n; i++) {
- const arch_register_class_t *cls = arch_isa_get_reg_class(aenv->isa, i);
- ir_node *irn;
- pset *live_nodes = pset_new_ptr(64);
- int max_live;
+ if(max_live > env->max_pressure)
+ env->max_pressure = max_live;
+
+ stat_be_block_regpressure(irg, block, max_live, cls->name);
+ ir_nodeset_destroy(&live_nodes);
+}
- live_nodes = be_liveness_end_of_block(env->lv, aenv, cls, block, live_nodes);
- max_live = pset_count(live_nodes);
+/**
+ * Collect reg pressure statistics per block and per class.
+ */
+static void stat_reg_pressure_block(ir_node *block, void *data) {
+ pressure_walker_env_t *env = data;
- sched_foreach_reverse(block, irn) {
- int cnt;
+ if(env->cls != NULL) {
+ check_reg_pressure_class(env, block, env->cls);
+ } else {
+ const arch_env_t *arch_env = be_get_birg_arch_env(env->birg);
+ int i, n;
- if(is_Phi(irn))
- break;
+ n = arch_env_get_n_reg_class(arch_env);
+ for (i = 0; i < n; i++) {
+ const arch_register_class_t *cls
+ = arch_env_get_reg_class(arch_env, i);
- live_nodes = be_liveness_transfer(aenv, cls, irn, live_nodes);
- cnt = pset_count(live_nodes);
- max_live = cnt < max_live ? max_live : cnt;
+ check_reg_pressure_class(env, block, cls);
}
-
- stat_be_block_regpressure(irg, block, max_live, cls->name);
}
}
void be_do_stat_reg_pressure(be_irg_t *birg) {
- ir_graph *irg = be_get_birg_irg(birg);
+ pressure_walker_env_t env;
+ ir_graph *irg = be_get_birg_irg(birg);
+ double average_pressure;
+
+ env.birg = birg;
+ env.insn_count = 0;
+ env.max_pressure = 0;
+ env.regpressure = 0;
+ be_liveness_assure_sets(be_assure_liveness(birg));
+ env.lv = be_get_birg_liveness(birg);
+
+ // hack for now, TODO: remove me later
+#if 0
+ env.cls = NULL;
+#else
+ env.cls = arch_env_get_reg_class(be_get_birg_arch_env(birg), 2);
+#endif
- if (stat_is_active()) {
- struct a_pressure_walker w;
+ /* Collect register pressure information for each block */
+ irg_block_walk_graph(irg, stat_reg_pressure_block, NULL, &env);
- w.birg = birg;
- w.lv = be_liveness(irg);
- /* Collect register pressure information for each block */
- irg_block_walk_graph(irg, stat_reg_pressure_block, NULL, &w);
- be_liveness_free(w.lv);
- }
+ average_pressure = env.regpressure / env.insn_count;
+ stat_ev_emit("average_register_pressure", average_pressure);
+ stat_ev_emit("maximum_register_pressure", env.max_pressure);
}
/**
#ifdef FIRM_STATISTICS
-const char *be_stat_tags[STAT_TAG_LAST];
-FILE *be_stat_file = NULL;
-
-void be_init_stat_file(const char *stat_file_name, const char *sourcefilename)
-{
- static char time_str[32];
-
- assert(be_stat_file == NULL);
-
- /* if we want to do some statistics, push the environment. */
- if (strlen(stat_file_name) == 0)
- return;
-
- be_stat_file = fopen(stat_file_name, "at");
- if (be_stat_file == NULL) {
- fprintf(stderr, "Warning couldn't open statfile '%s'\n", stat_file_name);
- return;
- }
-
- /* initialize the statistics tags */
- ir_snprintf(time_str, sizeof(time_str),"%u", time(NULL));
-
- be_stat_tags[STAT_TAG_FILE] = sourcefilename;
- be_stat_tags[STAT_TAG_TIME] = time_str;
- be_stat_tags[STAT_TAG_IRG] = "<all>";
- be_stat_tags[STAT_TAG_CLS] = "<all>";
-
- be_stat_ev_push(be_stat_tags, STAT_TAG_LAST, be_stat_file);
-}
-
-void be_close_stat_file()
-{
- be_stat_ev_pop();
- if (be_stat_file != NULL) {
- fclose(be_stat_file);
- be_stat_file = NULL;
- }
-}
#else /* FIRM_STATISTICS */
void (be_stat_init_irg)(const arch_env_t *arch_env, ir_graph *irg) {}
void (be_do_stat_nodes)(ir_graph *irg, const char *phase) {}
void (be_do_stat_reg_pressure)(be_irg_t *birg) {}
-void (be_do_stat_sched_ready)(ir_node *block, nodeset *ready_set) {}
+void (be_do_stat_sched_ready)(ir_node *block, ir_nodeset_t *ready_set) {}
void (be_do_stat_perm)(const char *class_name, int n_regs, ir_node *perm, ir_node *block, int n, int real_size) {}
#endif /* FIRM_STATISTICS */
projects / libfirm / blobdiff