/*
- * 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.
*
/**
* @file
* @brief Provides several statistic functions for the backend.
- * @author Christian Wuerdig
+ * @author Christian Wuerdig, Matthias Braun
* @version $Id$
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
#include <time.h>
#include "irgwalk.h"
#include "irhooks.h"
#include "execfreq.h"
-#include "dbginfo_t.h"
#include "firmstat_t.h"
#include "irtools.h"
-#include "pset.h"
+#include "statev.h"
+#include "error.h"
#include "bearch_t.h"
+#include "beirg_t.h"
#include "bestat.h"
#include "belive_t.h"
#include "besched.h"
#include "benode_t.h"
-#ifdef FIRM_STATISTICS
-
-typedef struct _be_stat_irg_t {
- ir_graph *irg; /**< the irg, the statistic is about */
- pset *phases; /**< node statistics for each phase */
- struct obstack obst; /**< the obstack containing the information */
- const arch_env_t *arch_env; /**< the current arch env */
-} be_stat_irg_t;
-
-typedef struct _be_stat_phase_t {
- const arch_env_t *arch_env; /**< the current arch env */
- const char *phase; /**< the name of the phase the statistic is about */
- unsigned long num_nodes; /**< overall number of reachable nodes in the irg */
- unsigned long num_data; /**< number of data nodes ((mode_datab && ! Proj && ! Phi) || mode_T) */
- unsigned long num_proj; /**< number of Projs */
- unsigned long num_phi; /**< number of Phis */
- unsigned long num_load; /**< number of Loads */
- unsigned long num_store; /**< number of Stores */
- unsigned long num_spill; /**< number of Spills */
- unsigned long num_reload; /**< number of Reloads */
-} be_stat_phase_t;
-
-static set *be_stat_data = NULL;
-
-static int cmp_stat_phase(const void *a, const void *b) {
- const be_stat_phase_t *p1 = a;
- const be_stat_phase_t *p2 = b;
-
- return p1->phase != p2->phase;
-}
-
-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;
-
- return p1->irg != p2->irg;
-}
-
-static be_stat_irg_t *find_stat_irg_entry(ir_graph *irg) {
- be_stat_irg_t *entry, key;
-
- if (! be_stat_data)
- return NULL;
-
- key.irg = irg;
- entry = set_find(be_stat_data, &key, sizeof(key), HASH_PTR(irg));
- return entry;
-}
-
-static be_stat_irg_t *get_stat_irg_entry(ir_graph *irg) {
- be_stat_irg_t *entry, key;
-
- if (! be_stat_data)
- return NULL;
-
- entry = find_stat_irg_entry(irg);
- if (! entry) {
- key.irg = irg;
- entry = set_insert(be_stat_data, &key, sizeof(key), HASH_PTR(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;
- 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);
-
- 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;
-
- live_nodes = be_liveness_end_of_block(env->lv, aenv, cls, block, live_nodes);
- max_live = pset_count(live_nodes);
-
- sched_foreach_reverse(block, irn) {
- int cnt;
-
- if(is_Phi(irn))
- break;
-
- live_nodes = be_liveness_transfer(aenv, cls, irn, live_nodes);
- cnt = pset_count(live_nodes);
- max_live = cnt < max_live ? max_live : cnt;
- }
-
- 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);
-
- if (stat_is_active()) {
- struct a_pressure_walker w;
-
- 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);
- }
-}
-
-/**
- * Notify statistic module about amount of ready nodes.
- */
-void be_do_stat_sched_ready(ir_node *block, const ir_nodeset_t *ready_set) {
- if (stat_is_active()) {
- stat_be_block_sched_ready(get_irn_irg(block), block, MIN(ir_nodeset_size(ready_set), 5));
- }
-}
-
-/**
- * Pass information about a perm to the statistic module.
- */
-void be_do_stat_perm(const char *class_name, int n_regs, ir_node *perm, ir_node *block, int n, int real_size) {
- if (stat_is_active()) {
- stat_be_block_stat_perm(class_name, n_regs, perm, block, n, real_size);
- }
-}
-
-/**
- * Pass information about a cycle or chain in a perm to the statistic module.
- */
-void be_do_stat_permcycle(const char *class_name, ir_node *perm, ir_node *block, int is_chain, int n_elems, int n_ops) {
- if (stat_is_active()) {
- stat_be_block_stat_permcycle(class_name, perm, block, is_chain, n_elems, n_ops);
+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);
+ ir_node *irn;
+ ir_nodeset_t live_nodes;
+ int max_live;
+
+ ir_nodeset_init(&live_nodes);
+ be_liveness_end_of_block(env->lv, 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(cls, irn, &live_nodes);
+ cnt = ir_nodeset_size(&live_nodes);
+ max_live = cnt < max_live ? max_live : cnt;
+ env->regpressure += cnt;
+ env->insn_count++;
}
-}
-
-/**
- * Updates nodes statistics.
- */
-static void do_nodes_stat(ir_node *irn, void *env) {
- be_stat_phase_t *phase = env;
- ir_mode *mode;
- ir_opcode opc;
- arch_irn_class_t irn_class;
-
- if (is_Block(irn))
- return;
- mode = get_irn_mode(irn);
- opc = get_irn_opcode(irn);
+ if(max_live > env->max_pressure)
+ env->max_pressure = max_live;
- phase->num_nodes++;
-
- /* check for nodes we want to ignore */
- if (be_is_Keep(irn) ||
- be_is_CopyKeep(irn) ||
- opc == iro_Start ||
- opc == iro_End)
- return;
-
- if (is_Proj(irn) && (mode != mode_X)) {
- phase->num_proj++;
- return;
- }
- else if (is_Phi(irn)) {
- phase->num_phi++;
- return;
- }
- else if (mode_is_datab(mode) || ((mode == mode_T) && ! is_be_node(irn)) || (is_Proj(irn) && (mode == mode_X)))
- phase->num_data++;
-
- if (opc == iro_Load)
- phase->num_load++;
- else if (opc == iro_Store)
- phase->num_store++;
-
- irn_class = arch_irn_classify(phase->arch_env, irn);
- if (irn_class & arch_irn_class_spill)
- phase->num_spill++;
- else if (irn_class & arch_irn_class_reload)
- phase->num_reload++;
- else if (irn_class & arch_irn_class_stackparam)
- phase->num_load++;
- else if (irn_class & arch_irn_class_load)
- phase->num_load++;
- else if (irn_class & arch_irn_class_store)
- phase->num_store++;
+ stat_be_block_regpressure(irg, block, max_live, cls->name);
+ ir_nodeset_destroy(&live_nodes);
}
-/**
- * Collects node statistics.
- *
- * @param irg the to do statistics for
- * @param phase the phase to collect the statistic for
- */
-void be_do_stat_nodes(ir_graph *irg, const char *phase) {
- be_stat_irg_t *irg_entry;
- be_stat_phase_t *phase_entry, phase_key;
-
- irg_entry = find_stat_irg_entry(irg);
-
- if (! irg_entry)
- return;
-
- phase_key.phase = phase;
- phase_entry = pset_find_ptr(irg_entry->phases, &phase_key);
-
- if (! phase_entry) {
- phase_entry = obstack_alloc(&irg_entry->obst, sizeof(*phase_entry));
- phase_entry = pset_insert(irg_entry->phases, phase_entry, HASH_PTR(phase));
- }
- memset(phase_entry, 0, sizeof(*phase_entry));
-
- phase_entry->phase = phase;
- phase_entry->arch_env = irg_entry->arch_env;
+static void stat_reg_pressure_block(ir_node *block, void *data) {
+ pressure_walker_env_t *env = data;
- irg_walk_blkwise_graph(irg_entry->irg, NULL, do_nodes_stat, phase_entry);
+ check_reg_pressure_class(env, block, env->cls);
}
-/**
- * Dumps statistics about nodes (called from dump_snapshot)
- */
-static void be_dump_node_stat(dumper_t *dmp, graph_entry_t *entry) {
- be_stat_irg_t *stat_irg = find_stat_irg_entry(entry->irg);
- be_stat_phase_t *phase;
-
- if (! stat_irg || ! stat_irg->phases)
- return;
-
- fprintf(dmp->f, "===> BE NODE STATISTIC BEGIN <===\n");
-
- foreach_pset(stat_irg->phases, phase) {
- fprintf(dmp->f, "--> Phase: %s\n", phase->phase);
- fprintf(dmp->f, "# nodes: %ld\n", phase->num_nodes);
- fprintf(dmp->f, "# data nodes: %ld\n", phase->num_data);
- fprintf(dmp->f, "# Proj: %ld\n", phase->num_proj);
- fprintf(dmp->f, "# Phi: %ld\n", phase->num_phi);
- fprintf(dmp->f, "# Load: %ld\n", phase->num_load);
- fprintf(dmp->f, "# Store: %ld\n", phase->num_store);
- fprintf(dmp->f, "# Spill: %ld\n", phase->num_spill);
- fprintf(dmp->f, "# Reload: %ld\n", phase->num_reload);
- }
-
- fprintf(dmp->f, "===> BE NODE STATISTIC END <===\n");
+void be_do_stat_reg_pressure(be_irg_t *birg, const arch_register_class_t *cls) {
+ 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);
+ env.cls = cls;
+
+ /* Collect register pressure information for each block */
+ irg_block_walk_graph(irg, stat_reg_pressure_block, NULL, &env);
+
+ average_pressure = env.regpressure / env.insn_count;
+ stat_ev_emit("bechordal_average_register_pressure", average_pressure);
+ stat_ev_emit("bechordal_maximum_register_pressure", env.max_pressure);
}
-/**
- * Returns a be statistic object for the given irg.
- */
-void be_stat_init_irg(const arch_env_t *arch_env, ir_graph *irg) {
- static int reg_func = 1;
- if (stat_is_active()) {
- be_stat_irg_t *stat_irg;
- if (! be_stat_data)
- be_stat_data = new_set(cmp_stat_data, 8);
-
- stat_irg = get_stat_irg_entry(irg);
- stat_irg->irg = irg;
- stat_irg->phases = new_pset(cmp_stat_phase, 8);
- stat_irg->arch_env = arch_env;
- obstack_init(&stat_irg->obst);
-
- if (reg_func) {
- /* first init: register dumper */
- stat_register_dumper_func(be_dump_node_stat);
- reg_func = 0;
- }
- }
-}
-#endif /* FIRM_STATISTICS */
typedef struct _estimate_irg_costs_env_t {
- const arch_env_t *arch_env;
ir_exec_freq *execfreqs;
double costs;
} estimate_irg_costs_env_t;
double costs = 0.0;
sched_foreach(block, node) {
- costs += arch_get_op_estimated_cost(env->arch_env, node);
+ costs += arch_get_op_estimated_cost(node);
}
env->costs += costs * get_block_execfreq(env->execfreqs, block);
}
-double be_estimate_irg_costs(ir_graph *irg, const arch_env_t *arch_env, ir_exec_freq *execfreqs)
+double be_estimate_irg_costs(ir_graph *irg, ir_exec_freq *execfreqs)
{
estimate_irg_costs_env_t env;
- env.arch_env = arch_env;
env.execfreqs = execfreqs;
env.costs = 0.0;
return env.costs;
}
-#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 void node_stat_walker(ir_node *irn, void *data)
{
- static char time_str[32];
-
- assert(be_stat_file == NULL);
+ be_node_stats_t *const stats = data;
+
+ /* if the node is a normal phi */
+ if(is_Phi(irn)) {
+ if (get_irn_mode(irn) == mode_M) {
+ (*stats)[BE_STAT_MEM_PHIS]++;
+ } else {
+ (*stats)[BE_STAT_PHIS]++;
+ }
+ } else {
+ arch_irn_class_t classify = arch_irn_classify(irn);
+
+ if(classify & arch_irn_class_spill)
+ (*stats)[BE_STAT_SPILLS]++;
+ if(classify & arch_irn_class_reload)
+ (*stats)[BE_STAT_RELOADS]++;
+ if(classify & arch_irn_class_remat)
+ (*stats)[BE_STAT_REMATS]++;
+ if(classify & arch_irn_class_copy)
+ (*stats)[BE_STAT_COPIES]++;
+ if(classify & arch_irn_class_perm)
+ (*stats)[BE_STAT_PERMS]++;
+ }
+}
- /* if we want to do some statistics, push the environment. */
- if (strlen(stat_file_name) == 0)
- return;
+void be_collect_node_stats(be_node_stats_t *new_stats, be_irg_t *birg)
+{
+ memset(new_stats, 0, sizeof(*new_stats));
+ irg_walk_graph(birg->irg, NULL, node_stat_walker, new_stats);
+}
- 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;
+void be_subtract_node_stats(be_node_stats_t *stats, be_node_stats_t *sub)
+{
+ int i;
+ for (i = 0; i < BE_STAT_COUNT; ++i) {
+ (*stats)[i] -= (*sub)[i];
}
+}
+
+void be_copy_node_stats(be_node_stats_t *dest, be_node_stats_t *src)
+{
+ memcpy(dest, src, sizeof(be_node_stats_t));
+}
- /* initialize the statistics tags */
- ir_snprintf(time_str, sizeof(time_str),"%u", time(NULL));
+static const char *get_stat_name(enum be_stat_tag_t tag)
+{
+ switch(tag) {
+ case BE_STAT_PHIS: return "phis";
+ case BE_STAT_MEM_PHIS: return "mem_phis";
+ case BE_STAT_COPIES: return "copies";
+ case BE_STAT_PERMS: return "perms";
+ case BE_STAT_SPILLS: return "spills";
+ case BE_STAT_RELOADS: return "reloads";
+ case BE_STAT_REMATS: return "remats";
+ default: panic("unknown stat tag found");
+ }
+}
- 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>";
+void be_emit_node_stats(be_node_stats_t *stats, const char *prefix)
+{
+ static char buf[256];
+ int i;
- be_stat_ev_push(be_stat_tags, STAT_TAG_LAST, be_stat_file);
+ for (i = 0; i < BE_STAT_COUNT; ++i) {
+ snprintf(buf, sizeof(buf), "%s%s", prefix, get_stat_name(i));
+ stat_ev_dbl(buf, (*stats)[i]);
+ }
}
-void be_close_stat_file()
+
+
+static void insn_count_walker(ir_node *irn, void *data)
{
- be_stat_ev_pop();
- if (be_stat_file != NULL) {
- fclose(be_stat_file);
- be_stat_file = NULL;
+ unsigned long *cnt = data;
+
+ switch(get_irn_opcode(irn)) {
+ case iro_Proj:
+ case iro_Phi:
+ case iro_Start:
+ case iro_End:
+ break;
+ default:
+ (*cnt)++;
}
}
-#else /* FIRM_STATISTICS */
+unsigned long be_count_insns(ir_graph *irg)
+{
+ unsigned long cnt = 0;
+ irg_walk_graph(irg, insn_count_walker, NULL, &cnt);
+ return cnt;
+}
-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, 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) {}
+static void block_count_walker(ir_node *node, void *data)
+{
+ unsigned long *cnt = data;
+ if (node == get_irg_end_block(current_ir_graph))
+ return;
+ (*cnt)++;
+}
-#endif /* FIRM_STATISTICS */
+unsigned long be_count_blocks(ir_graph *irg)
+{
+ unsigned long cnt = 0;
+ irg_block_walk_graph(irg, block_count_walker, NULL, &cnt);
+ return cnt;
+}