X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbechordal_main.c;h=67f9eaede3621673c2ba34b86f1921fa1b1f5560;hb=fef8dc3eff6468d7d65485af8e1ac9884c504e1a;hp=0a44e9f836b5acc49d5b4225d87dbf664e87a8fd;hpb=3a655a311371c919abe77558a5ef6986fc4be093;p=libfirm diff --git a/ir/be/bechordal_main.c b/ir/be/bechordal_main.c index 0a44e9f83..67f9eaede 100644 --- a/ir/be/bechordal_main.c +++ b/ir/be/bechordal_main.c @@ -22,7 +22,6 @@ * @brief Driver for the chordal register allocator. * @author Sebastian Hack * @date 29.11.2005 - * @version $Id$ */ #include "config.h" @@ -33,7 +32,6 @@ #include "pset.h" #include "list.h" #include "bitset.h" -#include "iterator.h" #include "lc_opts.h" #include "lc_opts_enum.h" @@ -41,15 +39,15 @@ #include "ircons_t.h" #include "irmode_t.h" #include "irgraph_t.h" -#include "irprintf_t.h" +#include "irprintf.h" #include "irgwalk.h" #include "ircons.h" #include "irdump.h" #include "irdom.h" #include "ircons.h" -#include "irbitset.h" #include "irnode.h" #include "ircons.h" +#include "irtools.h" #include "debug.h" #include "execfreq.h" #include "iredges_t.h" @@ -64,13 +62,13 @@ #include "bearch.h" #include "beifg.h" #include "benode.h" -#include "bestatevent.h" +#include "statev_t.h" #include "bestat.h" #include "bemodule.h" #include "be_t.h" #include "bera.h" #include "beirg.h" -#include "bedump_minir.h" +#include "bestack.h" #include "bespillslots.h" #include "bespill.h" @@ -87,29 +85,16 @@ static be_ra_chordal_opts_t options = { BE_CH_DUMP_NONE, BE_CH_LOWER_PERM_SWAP, - BE_CH_VRFY_WARN, - "", - "" + BE_CH_VRFY_WARN }; -typedef struct _post_spill_env_t { - be_chordal_env_t cenv; - be_irg_t *birg; - const arch_register_class_t *cls; - double pre_spill_cost; -} post_spill_env_t; - static const lc_opt_enum_int_items_t lower_perm_items[] = { { "copy", BE_CH_LOWER_PERM_COPY }, { "swap", BE_CH_LOWER_PERM_SWAP }, { NULL, 0 } }; -static const lc_opt_enum_int_items_t lower_perm_stat_items[] = { - { NULL, 0 } -}; - -static const lc_opt_enum_int_items_t dump_items[] = { +static const lc_opt_enum_mask_items_t dump_items[] = { { "none", BE_CH_DUMP_NONE }, { "spill", BE_CH_DUMP_SPILL }, { "live", BE_CH_DUMP_LIVE }, @@ -117,6 +102,7 @@ static const lc_opt_enum_int_items_t dump_items[] = { { "copymin", BE_CH_DUMP_COPYMIN }, { "ssadestr", BE_CH_DUMP_SSADESTR }, { "tree", BE_CH_DUMP_TREE_INTV }, + { "split", BE_CH_DUMP_SPLIT }, { "constr", BE_CH_DUMP_CONSTR }, { "lower", BE_CH_DUMP_LOWER }, { "spillslots", BE_CH_DUMP_SPILLSLOTS }, @@ -136,7 +122,7 @@ static lc_opt_enum_int_var_t lower_perm_var = { &options.lower_perm_opt, lower_perm_items }; -static lc_opt_enum_int_var_t dump_var = { +static lc_opt_enum_mask_var_t dump_var = { &options.dump_flags, dump_items }; @@ -144,13 +130,10 @@ static lc_opt_enum_int_var_t be_ch_vrfy_var = { &options.vrfy_option, be_ch_vrfy_items }; -static char minir_file[256] = ""; - static const lc_opt_table_entry_t be_chordal_options[] = { - LC_OPT_ENT_ENUM_PTR ("perm", "perm lowering options", &lower_perm_var), + LC_OPT_ENT_ENUM_INT ("perm", "perm lowering options", &lower_perm_var), LC_OPT_ENT_ENUM_MASK("dump", "select dump phases", &dump_var), - LC_OPT_ENT_ENUM_PTR ("verify", "verify options", &be_ch_vrfy_var), - LC_OPT_ENT_STR ("minirout", "dump MinIR to file", minir_file, sizeof(minir_file)), + LC_OPT_ENT_ENUM_INT ("verify", "verify options", &be_ch_vrfy_var), LC_OPT_LAST }; @@ -167,36 +150,33 @@ void be_register_chordal_coloring(const char *name, be_ra_chordal_coloring_t *co static void be_ra_chordal_coloring(be_chordal_env_t *env) { - assert(selected_coloring != NULL); - if (selected_coloring != NULL) { - selected_coloring->allocate(env); - } + selected_coloring->allocate(env); } static void dump(unsigned mask, ir_graph *irg, const arch_register_class_t *cls, - const char *suffix, - void (*dump_func)(ir_graph *, const char *)) + const char *suffix) { if ((options.dump_flags & mask) == mask) { if (cls) { char buf[256]; - snprintf(buf, sizeof(buf), "-%s%s", cls->name, suffix); - be_dump(irg, buf, dump_func); + snprintf(buf, sizeof(buf), "%s-%s", cls->name, suffix); + dump_ir_graph(irg, buf); + } else { + dump_ir_graph(irg, suffix); } - else - be_dump(irg, suffix, dump_func); } } /** - * Checks for every reload if its user can perform the load on itself. + * Post-Walker: Checks for the given reload if has only one user that can perform the + * reload as part of its address mode. + * Fold the reload into the user it that is possible. */ static void memory_operand_walker(ir_node *irn, void *env) { - const ir_edge_t *edge, *ne; - ir_node *block; - ir_node *spill; + ir_node *block; + ir_node *spill; (void)env; @@ -210,7 +190,7 @@ static void memory_operand_walker(ir_node *irn, void *env) spill = be_get_Reload_mem(irn); block = get_nodes_block(irn); - foreach_out_edge_safe(irn, edge, ne) { + foreach_out_edge_safe(irn, edge) { ir_node *src = get_edge_src_irn(edge); int pos = get_edge_src_pos(edge); @@ -221,11 +201,13 @@ static void memory_operand_walker(ir_node *irn, void *env) } } - /* kill the Reload */ + /* kill the Reload if it was folded */ if (get_irn_n_edges(irn) == 0) { + ir_graph *irg = get_irn_irg(irn); + ir_mode *frame_mode = get_irn_mode(get_irn_n(irn, n_be_Reload_frame)); sched_remove(irn); - set_irn_n(irn, be_pos_Reload_mem, new_Bad()); - set_irn_n(irn, be_pos_Reload_frame, new_Bad()); + set_irn_n(irn, n_be_Reload_mem, new_r_Bad(irg, mode_X)); + set_irn_n(irn, n_be_Reload_frame, new_r_Bad(irg, frame_mode)); } } @@ -243,47 +225,32 @@ static be_node_stats_t last_node_stats; /** * Perform things which need to be done per register class before spilling. */ -static void pre_spill(post_spill_env_t *pse, const arch_register_class_t *cls) +static void pre_spill(be_chordal_env_t *const chordal_env, arch_register_class_t const *const cls, ir_graph *const irg) { - be_chordal_env_t *chordal_env = &pse->cenv; - be_irg_t *birg = pse->birg; - ir_graph *irg = be_get_birg_irg(birg); - - pse->cls = cls; - chordal_env->cls = cls; - chordal_env->border_heads = pmap_create(); - chordal_env->ignore_colors = bitset_malloc(chordal_env->cls->n_regs); - - be_assure_liveness(birg); - be_liveness_assure_chk(be_get_birg_liveness(birg)); + chordal_env->cls = cls; + chordal_env->border_heads = pmap_create(); + chordal_env->allocatable_regs = bitset_malloc(chordal_env->cls->n_regs); - stat_ev_do(pse->pre_spill_cost = be_estimate_irg_costs(irg, birg->exec_freq)); + be_assure_live_chk(irg); /* put all ignore registers into the ignore register set. */ - be_put_ignore_regs(birg, pse->cls, chordal_env->ignore_colors); + be_put_allocatable_regs(irg, cls, chordal_env->allocatable_regs); be_timer_push(T_RA_CONSTR); - be_pre_spill_prepare_constr(chordal_env->birg, chordal_env->cls); + be_pre_spill_prepare_constr(irg, chordal_env->cls); be_timer_pop(T_RA_CONSTR); - dump(BE_CH_DUMP_CONSTR, birg->irg, pse->cls, "-constr-pre", dump_ir_block_graph_sched); + dump(BE_CH_DUMP_CONSTR, irg, cls, "constr-pre"); } /** * Perform things which need to be done per register class after spilling. */ -static void post_spill(post_spill_env_t *pse, int iteration) +static void post_spill(be_chordal_env_t *const chordal_env, ir_graph *const irg) { - be_chordal_env_t *chordal_env = &pse->cenv; - be_irg_t *birg = pse->birg; - ir_graph *irg = birg->irg; - int colors_n = arch_register_class_n_regs(chordal_env->cls); - int allocatable_regs = colors_n - be_put_ignore_regs(birg, chordal_env->cls, NULL); - /* some special classes contain only ignore regs, no work to be done */ + int const allocatable_regs = be_get_n_allocatable_regs(irg, chordal_env->cls); if (allocatable_regs > 0) { - stat_ev_dbl("bechordal_spillcosts", be_estimate_irg_costs(irg, birg->exec_freq) - pse->pre_spill_cost); - /* If we have a backend provided spiller, post spill is called in a loop after spilling for each register class. @@ -291,20 +258,18 @@ static void post_spill(post_spill_env_t *pse, int iteration) */ be_timer_push(T_RA_SPILL_APPLY); check_for_memory_operands(irg); - if (iteration == 0) { - be_abi_fix_stack_nodes(birg->abi); - } + be_abi_fix_stack_nodes(irg); be_timer_pop(T_RA_SPILL_APPLY); /* verify schedule and register pressure */ be_timer_push(T_VERIFY); if (chordal_env->opts->vrfy_option == BE_CH_VRFY_WARN) { - be_verify_schedule(birg); - be_verify_register_pressure(birg, pse->cls, irg); + be_verify_schedule(irg); + be_verify_register_pressure(irg, chordal_env->cls); } else if (chordal_env->opts->vrfy_option == BE_CH_VRFY_ASSERT) { - assert(be_verify_schedule(birg) && "Schedule verification failed"); - assert(be_verify_register_pressure(birg, pse->cls, irg) + assert(be_verify_schedule(irg) && "Schedule verification failed"); + assert(be_verify_register_pressure(irg, chordal_env->cls) && "Register pressure verification failed"); } be_timer_pop(T_VERIFY); @@ -314,23 +279,23 @@ static void post_spill(post_spill_env_t *pse, int iteration) be_ra_chordal_coloring(chordal_env); be_timer_pop(T_RA_COLOR); - dump(BE_CH_DUMP_CONSTR, irg, pse->cls, "-color", dump_ir_block_graph_sched); + dump(BE_CH_DUMP_CONSTR, irg, chordal_env->cls, "color"); /* Create the ifg with the selected flavor */ be_timer_push(T_RA_IFG); chordal_env->ifg = be_create_ifg(chordal_env); be_timer_pop(T_RA_IFG); - stat_ev_if { + if (stat_ev_enabled) { be_ifg_stat_t stat; be_node_stats_t node_stats; - be_ifg_stat(birg, chordal_env->ifg, &stat); + be_ifg_stat(irg, chordal_env->ifg, &stat); stat_ev_dbl("bechordal_ifg_nodes", stat.n_nodes); stat_ev_dbl("bechordal_ifg_edges", stat.n_edges); stat_ev_dbl("bechordal_ifg_comps", stat.n_comps); - be_collect_node_stats(&node_stats, birg); + be_collect_node_stats(&node_stats, irg); be_subtract_node_stats(&node_stats, &last_node_stats); stat_ev_dbl("bechordal_perms_before_coal", @@ -340,33 +305,17 @@ static void post_spill(post_spill_env_t *pse, int iteration) } be_timer_push(T_RA_COPYMIN); - if (minir_file[0] != '\0') { - FILE *out; - - if (strcmp(minir_file, "-") == 0) { - out = stdout; - } else { - out = fopen(minir_file, "w"); - if (out == NULL) { - panic("Cound't open minir output '%s'", minir_file); - } - } - - be_export_minir(chordal_env->birg->main_env->arch_env, out, irg); - if (out != stdout) - fclose(out); - } co_driver(chordal_env); be_timer_pop(T_RA_COPYMIN); - dump(BE_CH_DUMP_COPYMIN, irg, pse->cls, "-copymin", dump_ir_block_graph_sched); + dump(BE_CH_DUMP_COPYMIN, irg, chordal_env->cls, "copymin"); /* ssa destruction */ be_timer_push(T_RA_SSA); be_ssa_destruction(chordal_env); be_timer_pop(T_RA_SSA); - dump(BE_CH_DUMP_SSADESTR, irg, pse->cls, "-ssadestr", dump_ir_block_graph_sched); + dump(BE_CH_DUMP_SSADESTR, irg, chordal_env->cls, "ssadestr"); if (chordal_env->opts->vrfy_option != BE_CH_VRFY_OFF) { be_timer_push(T_VERIFY); @@ -380,134 +329,99 @@ static void post_spill(post_spill_env_t *pse, int iteration) /* free some always allocated data structures */ pmap_destroy(chordal_env->border_heads); - bitset_free(chordal_env->ignore_colors); + bitset_free(chordal_env->allocatable_regs); } /** * Performs chordal register allocation for each register class on given irg. * - * @param birg Backend irg object - * @return Structure containing timer for the single phases or NULL if no timing requested. + * @param irg the graph + * @return Structure containing timer for the single phases or NULL if no + * timing requested. */ -static void be_ra_chordal_main(be_irg_t *birg) +static void be_ra_chordal_main(ir_graph *irg) { - const arch_env_t *arch_env = birg->main_env->arch_env; - ir_graph *irg = birg->irg; + const arch_env_t *arch_env = be_get_irg_arch_env(irg); int j; int m; - be_chordal_env_t chordal_env; - struct obstack obst; be_timer_push(T_RA_OTHER); - be_timer_push(T_RA_PROLOG); - - be_assure_liveness(birg); - - chordal_env.obst = &obst; - chordal_env.opts = &options; - chordal_env.irg = irg; - chordal_env.birg = birg; - chordal_env.border_heads = NULL; - chordal_env.ifg = NULL; - chordal_env.ignore_colors = NULL; - - obstack_init(&obst); + be_chordal_env_t chordal_env; + obstack_init(&chordal_env.obst); + chordal_env.opts = &options; + chordal_env.irg = irg; + chordal_env.border_heads = NULL; + chordal_env.ifg = NULL; + chordal_env.allocatable_regs = NULL; - be_timer_pop(T_RA_PROLOG); - - stat_ev_if { - be_collect_node_stats(&last_node_stats, birg); + if (stat_ev_enabled) { + be_collect_node_stats(&last_node_stats, irg); } - if (! arch_code_generator_has_spiller(birg->cg)) { - /* use one of the generic spiller */ - - /* Perform the following for each register class. */ - for (j = 0, m = arch_env_get_n_reg_class(arch_env); j < m; ++j) { - post_spill_env_t pse; - const arch_register_class_t *cls - = arch_env_get_reg_class(arch_env, j); - - if (arch_register_class_flags(cls) & arch_register_class_flag_manual_ra) - continue; - + /* use one of the generic spiller */ - stat_ev_ctx_push_str("bechordal_cls", cls->name); + /* Perform the following for each register class. */ + for (j = 0, m = arch_env->n_register_classes; j < m; ++j) { + const arch_register_class_t *cls = &arch_env->register_classes[j]; - stat_ev_if { - be_do_stat_reg_pressure(birg, cls); - } + if (arch_register_class_flags(cls) & arch_register_class_flag_manual_ra) + continue; - memcpy(&pse.cenv, &chordal_env, sizeof(chordal_env)); - pse.birg = birg; - pre_spill(&pse, cls); - be_timer_push(T_RA_SPILL); - be_do_spill(birg, cls); - be_timer_pop(T_RA_SPILL); + stat_ev_ctx_push_str("bechordal_cls", cls->name); - dump(BE_CH_DUMP_SPILL, irg, pse.cls, "-spill", - dump_ir_block_graph_sched); - - post_spill(&pse, 0); + double pre_spill_cost = 0; + if (stat_ev_enabled) { + be_do_stat_reg_pressure(irg, cls); + pre_spill_cost = be_estimate_irg_costs(irg); + } - stat_ev_if { - be_node_stats_t node_stats; + pre_spill(&chordal_env, cls, irg); - be_collect_node_stats(&node_stats, birg); - be_subtract_node_stats(&node_stats, &last_node_stats); - be_emit_node_stats(&node_stats, "bechordal_"); + be_timer_push(T_RA_SPILL); + be_do_spill(irg, cls); + be_timer_pop(T_RA_SPILL); - be_copy_node_stats(&last_node_stats, &node_stats); - stat_ev_ctx_pop("bechordal_cls"); - } - } - } else { - post_spill_env_t *pse; + dump(BE_CH_DUMP_SPILL, irg, cls, "spill"); - /* the backend has its own spiller */ - m = arch_env_get_n_reg_class(arch_env); + stat_ev_dbl("bechordal_spillcosts", be_estimate_irg_costs(irg) - pre_spill_cost); - pse = ALLOCAN(post_spill_env_t, m); + post_spill(&chordal_env, irg); - for (j = 0; j < m; ++j) { - memcpy(&pse[j].cenv, &chordal_env, sizeof(chordal_env)); - pse[j].birg = birg; - pre_spill(&pse[j], pse[j].cls); - } + if (stat_ev_enabled) { + be_node_stats_t node_stats; - be_timer_push(T_RA_SPILL); - arch_code_generator_spill(birg->cg, birg); - be_timer_pop(T_RA_SPILL); - dump(BE_CH_DUMP_SPILL, irg, NULL, "-spill", dump_ir_block_graph_sched); + be_collect_node_stats(&node_stats, irg); + be_subtract_node_stats(&node_stats, &last_node_stats); + be_emit_node_stats(&node_stats, "bechordal_"); - for (j = 0; j < m; ++j) { - post_spill(&pse[j], j); + be_copy_node_stats(&last_node_stats, &node_stats); + stat_ev_ctx_pop("bechordal_cls"); } } be_timer_push(T_VERIFY); if (chordal_env.opts->vrfy_option == BE_CH_VRFY_WARN) { - be_verify_register_allocation(birg); + be_verify_register_allocation(irg); } else if (chordal_env.opts->vrfy_option == BE_CH_VRFY_ASSERT) { - assert(be_verify_register_allocation(birg) + assert(be_verify_register_allocation(irg) && "Register allocation invalid"); } be_timer_pop(T_VERIFY); be_timer_push(T_RA_EPILOG); - lower_nodes_after_ra(birg, options.lower_perm_opt & BE_CH_LOWER_PERM_COPY ? 1 : 0); - dump(BE_CH_DUMP_LOWER, irg, NULL, "-belower-after-ra", dump_ir_block_graph_sched); + lower_nodes_after_ra(irg, options.lower_perm_opt == BE_CH_LOWER_PERM_COPY); + dump(BE_CH_DUMP_LOWER, irg, NULL, "belower-after-ra"); - obstack_free(&obst, NULL); - be_liveness_invalidate(be_get_birg_liveness(birg)); + obstack_free(&chordal_env.obst, NULL); + be_invalidate_live_sets(irg); be_timer_pop(T_RA_EPILOG); be_timer_pop(T_RA_OTHER); } -BE_REGISTER_MODULE_CONSTRUCTOR(be_init_chordal_main); +BE_REGISTER_MODULE_CONSTRUCTOR(be_init_chordal_main) void be_init_chordal_main(void) { static be_ra_t be_ra_chordal_allocator = { @@ -521,5 +435,5 @@ void be_init_chordal_main(void) be_register_allocator("chordal", &be_ra_chordal_allocator); lc_opt_add_table(chordal_grp, be_chordal_options); - be_add_module_list_opt(chordal_grp, "coloring", "select coloring methode", &colorings, (void**) &selected_coloring); + be_add_module_list_opt(chordal_grp, "coloring", "select coloring method", &colorings, (void**) &selected_coloring); }