X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbestat.c;h=0b25be92ba5a377b504c452b79913c7a3406021c;hb=2be6077d3c0d1cdc8fad965f1857ac3a08c632aa;hp=cb47c077a1aeaf3ff2f2757892d7876570f8a7fd;hpb=8b89a7a3c5551e6f2fab855b097403f46da8752d;p=libfirm

diff --git a/ir/be/bestat.c b/ir/be/bestat.c
index cb47c077a..0b25be92b 100644
--- a/ir/be/bestat.c
+++ b/ir/be/bestat.c
@@ -1,73 +1,232 @@
+/*
+ * 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"
+
+
+
+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;
+};
+
+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;
+
+	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) {
+		size_t 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++;
+	}
 
-#undef MIN
-#define MIN(a, b) (a < b ? a : b)
+	if (max_live > env->max_pressure)
+		env->max_pressure = max_live;
 
-/**
- * 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);
+	stat_be_block_regpressure(irg, block, max_live, cls->name);
+	ir_nodeset_destroy(&live_nodes);
+}
+
+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(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);
+}
+
+
+
+
+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);
+}
 
-	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;
+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;
+}
 
-		live_nodes = be_liveness_end_of_block(aenv, cls, block, live_nodes);
-		max_live   = pset_count(live_nodes);
 
-		sched_foreach_reverse(block, irn) {
-			int cnt;
 
-			live_nodes = be_liveness_transfer(aenv, cls, irn, live_nodes);
-			cnt        = pset_count(live_nodes);
+static void node_stat_walker(ir_node *irn, void *data)
+{
+	be_node_stats_t *const stats = (be_node_stats_t*)data;
 
-			max_live = cnt < max_live ? max_live : cnt;
+	/* 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);
+}
 
-		stat_be_block_regpressure(birg->irg, block, max_live, cls->name);
+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_do_stat_reg_pressure(be_irg_t *birg) {
-	/* Collect register pressure information for each block */
-	irg_block_walk_graph(birg->irg, stat_reg_pressure_block, NULL, birg);
+void be_copy_node_stats(be_node_stats_t *dest, be_node_stats_t *src)
+{
+	memcpy(dest, src, sizeof(be_node_stats_t));
 }
 
-/**
- * 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));
+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)++;
+	}
 }
 
-#else
+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_do_stat_reg_pressure)(be_irg_t *birg) {}
-void (be_do_stat_sched_ready)(ir_node *block, nodeset *ready_set) {}
+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)++;
+}
 
-#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;
+}