X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbestat.c;h=af25bb4dc4d74fc1f021173b94b23918ec759a78;hb=026ec52ac914eee06e7afb961fb754735fb4ad9f;hp=a1be208b806f6dc4fd7e6884e3d6db912ffd3101;hpb=e1d4778ef7c53519d9af64fa04a107ce4293437d;p=libfirm diff --git a/ir/be/bestat.c b/ir/be/bestat.c index a1be208b8..af25bb4dc 100644 --- a/ir/be/bestat.c +++ b/ir/be/bestat.c @@ -1,14 +1,29 @@ +/* + * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. + * + * This file is part of libFirm. + * + * This file may be distributed and/or modified under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation and appearing in the file LICENSE.GPL included in the + * packaging of this file. + * + * Licensees holding valid libFirm Professional Edition licenses may use + * this file in accordance with the libFirm Commercial License. + * Agreement provided with the Software. + * + * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE + * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE. + */ + /** - * This file calls the corresponding statistic functions for - * some backend statistics. - * @author Christian Wuerdig - * $Id$ + * @file + * @brief Provides several statistic functions for the backend. + * @author Christian Wuerdig, Matthias Braun + * @version $Id$ */ -#ifdef HAVE_CONFIG_H #include "config.h" -#endif - -#ifdef FIRM_STATISTICS #include @@ -16,370 +31,234 @@ #include "irprintf.h" #include "irgwalk.h" #include "irhooks.h" -#include "dbginfo_t.h" +#include "execfreq.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" -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; - 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(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(birg->irg, block, max_live, cls->name); - } -} - -void be_do_stat_reg_pressure(be_irg_t *birg) { - if (stat_is_active()) { - struct a_pressure_walker w; - - w.birg = birg; - w.lv = be_liveness(birg->irg); - /* Collect register pressure information for each block */ - irg_block_walk_graph(birg->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, nodeset *ready_set) { - if (stat_is_active()) { - stat_be_block_sched_ready(get_irn_irg(block), block, MIN(nodeset_count(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; - opcode opc; - arch_irn_class_t irn_class; - - if (is_Block(irn)) - return; - - mode = get_irn_mode(irn); - opc = get_irn_opcode(irn); - - 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(max_live > env->max_pressure) + env->max_pressure = max_live; - 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; - } - } -} typedef struct _estimate_irg_costs_env_t { - const arch_env_t *arch_env; - ir_exec_freq *execfreqs; - double costs; + ir_exec_freq *execfreqs; + double costs; } estimate_irg_costs_env_t; static void estimate_block_costs(ir_node *block, void *data) { estimate_irg_costs_env_t *env = data; ir_node *node; - double costs = 0; + 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; + env.costs = 0.0; irg_block_walk_graph(irg, estimate_block_costs, NULL, &env); return env.costs; } -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); +static void node_stat_walker(ir_node *irn, void *data) +{ + 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]; } +} - /* 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] = ""; - be_stat_tags[STAT_TAG_CLS] = ""; +void be_copy_node_stats(be_node_stats_t *dest, be_node_stats_t *src) +{ + memcpy(dest, src, sizeof(be_node_stats_t)); +} - be_stat_ev_push(be_stat_tags, STAT_TAG_LAST, be_stat_file); +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"); + } } -void be_close_stat_file() +void be_emit_node_stats(be_node_stats_t *stats, const char *prefix) { - be_stat_ev_pop(); - if(be_stat_file != NULL) { - fclose(be_stat_file); - be_stat_file = NULL; + static char buf[256]; + int i; + + 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]); } } -#else -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_perm)(const char *class_name, int n_regs, ir_node *perm, ir_node *block, int n, int real_size) {} +static void insn_count_walker(ir_node *irn, void *data) +{ + unsigned long *cnt = data; + + switch(get_irn_opcode(irn)) { + case iro_Proj: + case iro_Phi: + case iro_Start: + case iro_End: + break; + default: + (*cnt)++; + } +} -#endif /* 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; +} + +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)++; +} + +unsigned long be_count_blocks(ir_graph *irg) +{ + unsigned long cnt = 0; + irg_block_walk_graph(irg, block_count_walker, NULL, &cnt); + return cnt; +}