+/*
+ * This file is part of libFirm.
+ * Copyright (C) 2012 University of Karlsruhe.
+ */
+
/**
- * This file calls the corresponding statistic functions for
- * some backend statistics.
- * $Id$
+ * @file
+ * @brief Provides several statistic functions for the backend.
+ * @author Christian Wuerdig, Matthias Braun
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
-#ifdef FIRM_STATISTICS
+#include <time.h>
#include "irnode_t.h"
#include "irprintf.h"
#include "irgwalk.h"
#include "irhooks.h"
-#include "dbginfo_t.h"
+#include "execfreq.h"
#include "firmstat_t.h"
#include "irtools.h"
+#include "error.h"
+#include "statev_t.h"
+#include "bearch.h"
+#include "beirg.h"
#include "bestat.h"
#include "belive_t.h"
#include "besched.h"
+#include "benode.h"
-/**
- * Collect reg pressure statistics per block and per class.
- */
-static void stat_reg_pressure_block(ir_node *block, void *env) {
- be_irg_t *birg = env;
- const arch_env_t *aenv = birg->main_env->arch_env;
- 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(aenv, cls, block, live_nodes);
- max_live = pset_count(live_nodes);
+typedef struct pressure_walker_env_t pressure_walker_env_t;
+struct pressure_walker_env_t {
+ ir_graph *irg;
+ be_lv_t *lv;
+ double insn_count;
+ double regpressure;
+ size_t max_pressure;
+ const arch_register_class_t *cls;
+};
- sched_foreach_reverse(block, irn) {
- int cnt;
+static void check_reg_pressure_class(pressure_walker_env_t *env,
+ ir_node *block,
+ const arch_register_class_t *cls)
+{
+ ir_graph *irg = env->irg;
+ ir_nodeset_t live_nodes;
+ size_t max_live;
- live_nodes = be_liveness_transfer(aenv, cls, irn, live_nodes);
- cnt = pset_count(live_nodes);
+ 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;
- max_live = cnt < max_live ? max_live : cnt;
- }
+ sched_foreach_reverse(block, irn) {
+ size_t cnt;
+
+ if (is_Phi(irn))
+ break;
- stat_be_block_regpressure(birg->irg, block, MIN(max_live, 5), cls->name);
+ 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++;
}
+
+ 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);
}
-void be_do_stat_reg_pressure(be_irg_t *birg) {
+static void stat_reg_pressure_block(ir_node *block, void *data)
+{
+ pressure_walker_env_t *env = (pressure_walker_env_t*)data;
+
+ check_reg_pressure_class(env, block, env->cls);
+}
+
+void be_do_stat_reg_pressure(ir_graph *irg, const arch_register_class_t *cls)
+{
+ pressure_walker_env_t env;
+ double average_pressure;
+
+ env.irg = irg;
+ env.insn_count = 0;
+ env.max_pressure = 0;
+ env.regpressure = 0;
+ be_assure_live_sets(irg);
+ env.lv = be_get_irg_liveness(irg);
+ env.cls = cls;
+
/* Collect register pressure information for each block */
- irg_block_walk_graph(birg->irg, stat_reg_pressure_block, NULL, birg);
+ irg_block_walk_graph(irg, stat_reg_pressure_block, NULL, &env);
+
+ average_pressure = env.regpressure / env.insn_count;
+ stat_ev_dbl("bechordal_average_register_pressure", average_pressure);
+ stat_ev_dbl("bechordal_maximum_register_pressure", env.max_pressure);
}
-/**
- * Notify statistic module about amount of ready nodes.
- */
-void be_do_stat_sched_ready(ir_node *block, nodeset *ready_set) {
- stat_be_block_sched_ready(get_irn_irg(block), block, nodeset_count(ready_set));
+
+
+
+typedef struct estimate_irg_costs_env_t {
+ double costs;
+} estimate_irg_costs_env_t;
+
+static void estimate_block_costs(ir_node *block, void *data)
+{
+ estimate_irg_costs_env_t *env = (estimate_irg_costs_env_t*)data;
+ double costs = 0.0;
+
+ sched_foreach(block, node) {
+ costs += arch_get_op_estimated_cost(node);
+ }
+
+ env->costs += costs * get_block_execfreq(block);
}
-#else
+double be_estimate_irg_costs(ir_graph *irg)
+{
+ estimate_irg_costs_env_t env;
+ env.costs = 0.0;
+
+ irg_block_walk_graph(irg, estimate_block_costs, NULL, &env);
+
+ return env.costs;
+}
-void (be_do_stat_reg_pressure)(be_irg_t *birg) {}
-void (be_do_stat_sched_ready)(ir_node *block, nodeset *ready_set) {}
-#endif /* FIRM_STATISTICS */
+
+static void node_stat_walker(ir_node *irn, void *data)
+{
+ be_node_stats_t *const stats = (be_node_stats_t*)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 if (be_is_Perm(irn)) {
+ (*stats)[BE_STAT_PERMS]++;
+ } else if (be_is_Copy(irn)) {
+ (*stats)[BE_STAT_COPIES]++;
+ }
+}
+
+void be_collect_node_stats(be_node_stats_t *new_stats, ir_graph *irg)
+{
+ memset(new_stats, 0, sizeof(*new_stats));
+ irg_walk_graph(irg, NULL, node_stat_walker, new_stats);
+}
+
+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));
+}
+
+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";
+ default: panic("unknown stat tag found");
+ }
+}
+
+void be_emit_node_stats(be_node_stats_t *stats, const char *prefix)
+{
+ static char buf[256];
+ be_stat_tag_t i;
+
+ for (i = BE_STAT_FIRST; i < BE_STAT_COUNT; ++i) {
+ snprintf(buf, sizeof(buf), "%s%s", prefix, get_stat_name(i));
+ stat_ev_dbl(buf, (*stats)[i]);
+ }
+}
+
+
+
+static void insn_count_walker(ir_node *irn, void *data)
+{
+ unsigned long *cnt = (unsigned long*)data;
+
+ switch (get_irn_opcode(irn)) {
+ case iro_Proj:
+ case iro_Phi:
+ case beo_Start:
+ case iro_End:
+ break;
+ default:
+ (*cnt)++;
+ }
+}
+
+unsigned long be_count_insns(ir_graph *irg)
+{
+ unsigned long cnt = 0;
+ irg_walk_graph(irg, insn_count_walker, NULL, &cnt);
+ return cnt;
+}
+
+static void block_count_walker(ir_node *node, void *data)
+{
+ unsigned long *cnt = (unsigned long*)data;
+ if (node == get_irg_end_block(get_irn_irg(node)))
+ return;
+ (*cnt)++;
+}
+
+unsigned long be_count_blocks(ir_graph *irg)
+{
+ unsigned long cnt = 0;
+ irg_block_walk_graph(irg, block_count_walker, NULL, &cnt);
+ return cnt;
+}
projects / libfirm / blobdiff