nsz Git - libfirm/blob - ir/be/bechordal_main.c

   1 /**
   2  * @file   bechordal_main.c
   3  * @date   29.11.2005
   4  * @author Sebastian Hack
   5  * @cvs-id $Id$
   6  *
   7  * Copyright (C) 2005-2006 Universitaet Karlsruhe
   8  * Released under the GPL
   9  *
  10  * Driver for the chordal register allocator.
  11  */
  12 #ifdef HAVE_CONFIG_H
  13 #include "config.h"
  14 #endif
  15
  16 #include "obst.h"
  17 #include "pset.h"
  18 #include "list.h"
  19 #include "bitset.h"
  20 #include "iterator.h"
  21 #include "firm_config.h"
  22
  23 #ifdef WITH_LIBCORE
  24 #include <libcore/lc_opts.h>
  25 #include <libcore/lc_opts_enum.h>
  26 #include <libcore/lc_timing.h>
  27 #endif /* WITH_LIBCORE */
  28
  29 #include "ircons_t.h"
  30 #include "irmode_t.h"
  31 #include "irgraph_t.h"
  32 #include "irprintf_t.h"
  33 #include "irgwalk.h"
  34 #include "ircons.h"
  35 #include "irdump.h"
  36 #include "irdom.h"
  37 #include "ircons.h"
  38 #include "irbitset.h"
  39 #include "irnode.h"
  40 #include "ircons.h"
  41 #include "debug.h"
  42 #include "xmalloc.h"
  43 #include "execfreq.h"
  44
  45 #include "bechordal_t.h"
  46 #include "beabi.h"
  47 #include "bejavacoal.h"
  48 #include "beutil.h"
  49 #include "besched.h"
  50 #include "benumb_t.h"
  51 #include "besched_t.h"
  52 #include "belive_t.h"
  53 #include "bearch.h"
  54 #include "beifg_t.h"
  55 #include "beifg_impl.h"
  56 #include "benode_t.h"
  57
  58 #include "bespillbelady.h"
  59 #include "bespillmorgan.h"
  60 #include "bespillslots.h"
  61 #include "belower.h"
  62
  63 #ifdef WITH_ILP
  64 #include "bespillremat.h"
  65 #endif /* WITH_ILP */
  66
  67 #include "bejavacoal.h"
  68 #include "becopystat.h"
  69 #include "becopyopt.h"
  70 #include "bessadestr.h"
  71 #include "beverify.h"
  72 #include "bespillcost.h"
  73 #include "benode_t.h"
  74
  75 void be_ra_chordal_check(be_chordal_env_t *chordal_env) {
  76         const arch_env_t *arch_env = chordal_env->birg->main_env->arch_env;
  77         struct obstack ob;
  78         pmap_entry *pme;
  79         ir_node **nodes, *n1, *n2;
  80         int i, o;
  81         DEBUG_ONLY(firm_dbg_module_t *dbg = chordal_env->dbg;)
  82
  83         /* Collect all irns */
  84         obstack_init(&ob);
  85         pmap_foreach(chordal_env->border_heads, pme) {
  86                 border_t *curr;
  87                 struct list_head *head = pme->value;
  88                 list_for_each_entry(border_t, curr, head, list)
  89                         if (curr->is_def && curr->is_real)
  90                                 if (arch_get_irn_reg_class(arch_env, curr->irn, -1) == chordal_env->cls)
  91                                         obstack_ptr_grow(&ob, curr->irn);
  92         }
  93         obstack_ptr_grow(&ob, NULL);
  94         nodes = (ir_node **) obstack_finish(&ob);
  95
  96         /* Check them */
  97         for (i = 0, n1 = nodes[i]; n1; n1 = nodes[++i]) {
  98                 const arch_register_t *n1_reg, *n2_reg;
  99
 100                 n1_reg = arch_get_irn_register(arch_env, n1);
 101                 if (!arch_reg_is_allocatable(arch_env, n1, -1, n1_reg)) {
 102                         DBG((dbg, 0, "Register %s assigned to %+F is not allowed\n", n1_reg->name, n1));
 103                         assert(0 && "Register constraint does not hold");
 104                 }
 105                 for (o = i+1, n2 = nodes[o]; n2; n2 = nodes[++o]) {
 106                         n2_reg = arch_get_irn_register(arch_env, n2);
 107                         if (values_interfere(chordal_env->lv, n1, n2) && n1_reg == n2_reg) {
 108                                 DBG((dbg, 0, "Values %+F and %+F interfere and have the same register assigned: %s\n", n1, n2, n1_reg->name));
 109                                 assert(0 && "Interfering values have the same color!");
 110                         }
 111                 }
 112         }
 113         obstack_free(&ob, NULL);
 114 }
 115
 116 int nodes_interfere(const be_chordal_env_t *env, const ir_node *a, const ir_node *b)
 117 {
 118         if(env->ifg)
 119                 return be_ifg_connected(env->ifg, a, b);
 120         else
 121                 return values_interfere(env->lv, a, b);
 122 }
 123
 124
 125 static be_ra_chordal_opts_t options = {
 126         BE_CH_DUMP_NONE,
 127         BE_CH_SPILL_BELADY,
 128         BE_CH_IFG_STD,
 129         BE_CH_LOWER_PERM_SWAP,
 130         BE_CH_VRFY_WARN,
 131 };
 132
 133 /** Enable extreme live range splitting. */
 134 static int be_elr_split = 0;
 135
 136 /** Assumed loop iteration count for execution frequency estimation. */
 137 static int be_loop_weight = 9;
 138
 139 #ifdef WITH_LIBCORE
 140 static be_ra_timer_t ra_timer = {
 141         NULL,
 142         NULL,
 143         NULL,
 144         NULL,
 145         NULL,
 146         NULL,
 147         NULL,
 148         NULL,
 149         NULL,
 150         NULL,
 151         NULL,
 152 };
 153
 154 static const lc_opt_enum_int_items_t spill_items[] = {
 155         { "morgan", BE_CH_SPILL_MORGAN },
 156         { "belady", BE_CH_SPILL_BELADY },
 157 #ifdef WITH_ILP
 158         { "remat",  BE_CH_SPILL_REMAT },
 159 #endif /* WITH_ILP */
 160         { NULL, 0 }
 161 };
 162
 163 static const lc_opt_enum_int_items_t ifg_flavor_items[] = {
 164         { "std",     BE_CH_IFG_STD     },
 165         { "fast",    BE_CH_IFG_FAST    },
 166         { "clique",  BE_CH_IFG_CLIQUE  },
 167         { "pointer", BE_CH_IFG_POINTER },
 168         { "list",    BE_CH_IFG_LIST    },
 169         { "check",   BE_CH_IFG_CHECK   },
 170         { NULL,      0                 }
 171 };
 172
 173 static const lc_opt_enum_int_items_t lower_perm_items[] = {
 174         { "copy", BE_CH_LOWER_PERM_COPY },
 175         { "swap", BE_CH_LOWER_PERM_SWAP },
 176         { NULL, 0 }
 177 };
 178
 179 static const lc_opt_enum_int_items_t lower_perm_stat_items[] = {
 180         { NULL, 0 }
 181 };
 182
 183 static const lc_opt_enum_int_items_t dump_items[] = {
 184         { "spill",      BE_CH_DUMP_SPILL      },
 185         { "live",       BE_CH_DUMP_LIVE       },
 186         { "color",      BE_CH_DUMP_COLOR      },
 187         { "copymin",    BE_CH_DUMP_COPYMIN    },
 188         { "ssadestr",   BE_CH_DUMP_SSADESTR   },
 189         { "tree",       BE_CH_DUMP_TREE_INTV  },
 190         { "constr",     BE_CH_DUMP_CONSTR     },
 191         { "lower",      BE_CH_DUMP_LOWER      },
 192         { "spillslots", BE_CH_DUMP_SPILLSLOTS },
 193         { "appel",      BE_CH_DUMP_APPEL      },
 194         { "all",        BE_CH_DUMP_ALL        },
 195         { NULL, 0 }
 196 };
 197
 198 static const lc_opt_enum_int_items_t be_ch_vrfy_items[] = {
 199         { "off",    BE_CH_VRFY_OFF    },
 200         { "warn",   BE_CH_VRFY_WARN   },
 201         { "assert", BE_CH_VRFY_ASSERT },
 202         { NULL, 0 }
 203 };
 204
 205 static lc_opt_enum_int_var_t spill_var = {
 206         &options.spill_method, spill_items
 207 };
 208
 209 static lc_opt_enum_int_var_t ifg_flavor_var = {
 210         &options.ifg_flavor, ifg_flavor_items
 211 };
 212
 213 static lc_opt_enum_int_var_t lower_perm_var = {
 214         &options.lower_perm_opt, lower_perm_items
 215 };
 216
 217 static lc_opt_enum_int_var_t dump_var = {
 218         &options.dump_flags, dump_items
 219 };
 220
 221 static lc_opt_enum_int_var_t be_ch_vrfy_var = {
 222         &options.vrfy_option, be_ch_vrfy_items
 223 };
 224
 225 static const lc_opt_table_entry_t be_chordal_options[] = {
 226         LC_OPT_ENT_ENUM_INT ("spill",         "spill method (belady, morgan or remat)", &spill_var),
 227         LC_OPT_ENT_ENUM_PTR ("ifg",           "interference graph flavour (std, fast, clique, pointer, list, check)", &ifg_flavor_var),
 228         LC_OPT_ENT_ENUM_PTR ("perm",          "perm lowering options (copy or swap)", &lower_perm_var),
 229         LC_OPT_ENT_ENUM_MASK("dump",          "select dump phases", &dump_var),
 230         LC_OPT_ENT_ENUM_PTR ("vrfy",          "verify options (off, warn, assert)", &be_ch_vrfy_var),
 231         LC_OPT_ENT_BOOL     ("elrsplit",      "enable extreme live range splitting", &be_elr_split),
 232         LC_OPT_ENT_INT      ("loop_weight",   "assumed amount of loop iterations for guessing the execution frequency", &be_loop_weight),
 233         { NULL }
 234 };
 235
 236 extern void be_spill_remat_register_options(lc_opt_entry_t *ent);
 237
 238
 239 static void be_ra_chordal_register_options(lc_opt_entry_t *grp)
 240 {
 241         static int run_once = 0;
 242         lc_opt_entry_t *chordal_grp;
 243
 244         if (! run_once) {
 245                 run_once    = 1;
 246                 chordal_grp = lc_opt_get_grp(grp, "chordal");
 247
 248                 lc_opt_add_table(chordal_grp, be_chordal_options);
 249
 250                 co_register_options(chordal_grp);
 251                 be_java_coal_register_options(chordal_grp);
 252 #ifdef WITH_ILP
 253                 be_spill_remat_register_options(chordal_grp);
 254 #endif
 255         }
 256 }
 257 #endif /* WITH_LIBCORE */
 258
 259 static void dump(unsigned mask, ir_graph *irg,
 260                                  const arch_register_class_t *cls,
 261                                  const char *suffix,
 262                                  void (*dump_func)(ir_graph *, const char *))
 263 {
 264         if((options.dump_flags & mask) == mask) {
 265                 if (cls) {
 266                         char buf[256];
 267                         snprintf(buf, sizeof(buf), "-%s%s", cls->name, suffix);
 268                         be_dump(irg, buf, dump_func);
 269                 }
 270                 else
 271                         be_dump(irg, suffix, dump_func);
 272         }
 273 }
 274
 275 static void put_ignore_colors(be_chordal_env_t *chordal_env)
 276 {
 277         int n_colors = chordal_env->cls->n_regs;
 278         int i;
 279
 280         bitset_clear_all(chordal_env->ignore_colors);
 281         be_abi_put_ignore_regs(chordal_env->birg->abi, chordal_env->cls, chordal_env->ignore_colors);
 282         for(i = 0; i < n_colors; ++i)
 283                 if(arch_register_type_is(&chordal_env->cls->regs[i], ignore))
 284                         bitset_set(chordal_env->ignore_colors, i);
 285 }
 286
 287 FILE *be_chordal_open(const be_chordal_env_t *env, const char *prefix, const char *suffix)
 288 {
 289         char buf[1024];
 290
 291         ir_snprintf(buf, sizeof(buf), "%s%F_%s%s", prefix, env->irg, env->cls->name, suffix);
 292         return fopen(buf, "wt");
 293 }
 294
 295 void check_ifg_implementations(be_chordal_env_t *chordal_env)
 296 {
 297         FILE *f;
 298
 299         f = be_chordal_open(chordal_env, "std", ".log");
 300         chordal_env->ifg = be_ifg_std_new(chordal_env);
 301         be_ifg_check_sorted_to_file(chordal_env->ifg, f);
 302         fclose(f);
 303
 304         f = be_chordal_open(chordal_env, "list", ".log");
 305         be_ifg_free(chordal_env->ifg);
 306         chordal_env->ifg = be_ifg_list_new(chordal_env);
 307         be_ifg_check_sorted_to_file(chordal_env->ifg, f);
 308         fclose(f);
 309
 310         f = be_chordal_open(chordal_env, "clique", ".log");
 311         be_ifg_free(chordal_env->ifg);
 312         chordal_env->ifg = be_ifg_clique_new(chordal_env);
 313         be_ifg_check_sorted_to_file(chordal_env->ifg, f);
 314         fclose(f);
 315
 316         f = be_chordal_open(chordal_env, "pointer", ".log");
 317         be_ifg_free(chordal_env->ifg);
 318         chordal_env->ifg = be_ifg_pointer_new(chordal_env);
 319         be_ifg_check_sorted_to_file(chordal_env->ifg, f);
 320         fclose(f);
 321
 322         chordal_env->ifg = NULL;
 323 };
 324
 325 /**
 326  * Checks for every reload if it's user can perform the load on itself.
 327  */
 328 static void memory_operand_walker(ir_node *irn, void *env) {
 329         be_chordal_env_t *cenv = env;
 330         const arch_env_t *aenv = cenv->birg->main_env->arch_env;
 331         const ir_edge_t  *edge, *ne;
 332         ir_node          *block;
 333         ir_node          *spill;
 334
 335         if (! be_is_Reload(irn))
 336                 return;
 337
 338         // only use memory operands, if the reload is only used by 1 node
 339         if(get_irn_n_edges(irn) > 1)
 340                 return;
 341
 342         spill = be_get_Reload_mem(irn);
 343         block = get_nodes_block(irn);
 344
 345         foreach_out_edge_safe(irn, edge, ne) {
 346                 ir_node *src = get_edge_src_irn(edge);
 347                 int     pos  = get_edge_src_pos(edge);
 348
 349                 if (! src)
 350                         continue;
 351
 352                 if (get_nodes_block(src) == block && arch_possible_memory_operand(aenv, src, pos)) {
 353                         DBG((cenv->dbg, LEVEL_3, "performing memory operand %+F at %+F\n", irn, src));
 354                         arch_perform_memory_operand(aenv, src, spill, pos);
 355                 }
 356         }
 357
 358         /* kill the Reload */
 359         if (get_irn_n_edges(irn) == 0) {
 360                 sched_remove(irn);
 361                 set_irn_n(irn, 0, new_Bad());
 362                 set_irn_n(irn, 1, new_Bad());
 363         }
 364 }
 365
 366 /**
 367  * Starts a walk for memory operands if supported by the backend.
 368  */
 369 static INLINE void check_for_memory_operands(be_chordal_env_t *chordal_env) {
 370         irg_walk_graph(chordal_env->irg, NULL, memory_operand_walker, chordal_env);
 371 }
 372
 373 #ifdef WITH_LIBCORE
 374 /**
 375  * Initialize all timers.
 376  */
 377 static void be_init_timer(be_options_t *main_opts)
 378 {
 379         if (main_opts->timing == BE_TIME_ON) {
 380                 ra_timer.t_prolog  = lc_timer_register("ra_prolog",   "regalloc prolog");
 381                 ra_timer.t_epilog  = lc_timer_register("ra_epilog",   "regalloc epilog");
 382                 ra_timer.t_live    = lc_timer_register("ra_liveness", "be liveness");
 383                 ra_timer.t_spill   = lc_timer_register("ra_spill",    "spiller");
 384                 ra_timer.t_spillslots = lc_timer_register("ra_spillslots",    "spillslots");
 385                 ra_timer.t_color   = lc_timer_register("ra_color",    "graph coloring");
 386                 ra_timer.t_ifg     = lc_timer_register("ra_ifg",      "interference graph");
 387                 ra_timer.t_copymin = lc_timer_register("ra_copymin",  "copy minimization");
 388                 ra_timer.t_ssa     = lc_timer_register("ra_ssadestr", "ssa destruction");
 389                 ra_timer.t_verify  = lc_timer_register("ra_verify",   "graph verification");
 390                 ra_timer.t_other   = lc_timer_register("ra_other",    "other time");
 391
 392                 LC_STOP_AND_RESET_TIMER(ra_timer.t_prolog);
 393                 LC_STOP_AND_RESET_TIMER(ra_timer.t_epilog);
 394                 LC_STOP_AND_RESET_TIMER(ra_timer.t_live);
 395                 LC_STOP_AND_RESET_TIMER(ra_timer.t_spill);
 396                 LC_STOP_AND_RESET_TIMER(ra_timer.t_spillslots);
 397                 LC_STOP_AND_RESET_TIMER(ra_timer.t_color);
 398                 LC_STOP_AND_RESET_TIMER(ra_timer.t_ifg);
 399                 LC_STOP_AND_RESET_TIMER(ra_timer.t_copymin);
 400                 LC_STOP_AND_RESET_TIMER(ra_timer.t_ssa);
 401                 LC_STOP_AND_RESET_TIMER(ra_timer.t_verify);
 402                 LC_STOP_AND_RESET_TIMER(ra_timer.t_other);
 403         }
 404 }
 405
 406 #define BE_TIMER_INIT(main_opts)        be_init_timer(main_opts)
 407
 408 #define BE_TIMER_PUSH(timer)                                                            \
 409         if (main_opts->timing == BE_TIME_ON) {                                              \
 410                 if (! lc_timer_push(timer)) {                                                   \
 411                         if (options.vrfy_option == BE_CH_VRFY_ASSERT)                               \
 412                                 assert(!"Timer already on stack, cannot be pushed twice.");             \
 413                         else if (options.vrfy_option == BE_CH_VRFY_WARN)                            \
 414                                 fprintf(stderr, "Timer %s already on stack, cannot be pushed twice.\n", \
 415                                         lc_timer_get_name(timer));                                          \
 416                 }                                                                               \
 417         }
 418 #define BE_TIMER_POP(timer)                                                                    \
 419         if (main_opts->timing == BE_TIME_ON) {                                                     \
 420                 lc_timer_t *tmp = lc_timer_pop();                                                      \
 421                 if (options.vrfy_option == BE_CH_VRFY_ASSERT)                                          \
 422                         assert(tmp == timer && "Attempt to pop wrong timer.");                             \
 423                 else if (options.vrfy_option == BE_CH_VRFY_WARN && tmp != timer)                       \
 424                         fprintf(stderr, "Attempt to pop wrong timer. %s is on stack, trying to pop %s.\n", \
 425                                 lc_timer_get_name(tmp), lc_timer_get_name(timer));                             \
 426                 timer = tmp;                                                                           \
 427         }
 428 #else
 429
 430 #define BE_TIMER_INIT(main_opts)
 431 #define BE_TIMER_PUSH(timer)
 432 #define BE_TIMER_POP(timer)
 433
 434 #endif /* WITH_LIBCORE */
 435
 436 /**
 437  * Performs chordal register allocation for each register class on given irg.
 438  *
 439  * @param bi  Backend irg object
 440  * @return Structure containing timer for the single phases or NULL if no timing requested.
 441  */
 442 static be_ra_timer_t *be_ra_chordal_main(const be_irg_t *bi)
 443 {
 444         const be_main_env_t *main_env  = bi->main_env;
 445         const arch_isa_t    *isa       = arch_env_get_isa(main_env->arch_env);
 446         ir_graph            *irg       = bi->irg;
 447         be_options_t        *main_opts = main_env->options;
 448         int                  splitted  = 0;
 449
 450         int j, m;
 451         be_chordal_env_t chordal_env;
 452
 453         BE_TIMER_INIT(main_opts);
 454         BE_TIMER_PUSH(ra_timer.t_other);
 455         BE_TIMER_PUSH(ra_timer.t_prolog);
 456
 457         compute_doms(irg);
 458
 459         chordal_env.opts      = &options;
 460         chordal_env.irg       = irg;
 461         chordal_env.birg      = bi;
 462         chordal_env.dom_front = be_compute_dominance_frontiers(irg);
 463         chordal_env.exec_freq = compute_execfreq(irg, be_loop_weight);
 464         chordal_env.lv        = be_liveness(irg);
 465         FIRM_DBG_REGISTER(chordal_env.dbg, "firm.be.chordal");
 466
 467         obstack_init(&chordal_env.obst);
 468
 469         BE_TIMER_POP(ra_timer.t_prolog);
 470
 471         /* Perform the following for each register class. */
 472         for (j = 0, m = arch_isa_get_n_reg_class(isa); j < m; ++j) {
 473                 chordal_env.cls           = arch_isa_get_reg_class(isa, j);
 474                 chordal_env.border_heads  = pmap_create();
 475                 chordal_env.ignore_colors = bitset_malloc(chordal_env.cls->n_regs);
 476
 477                 /* put all ignore registers into the ignore register set. */
 478                 put_ignore_colors(&chordal_env);
 479
 480                 BE_TIMER_PUSH(ra_timer.t_live);
 481                 be_liveness_recompute(chordal_env.lv);
 482                 BE_TIMER_POP(ra_timer.t_live);
 483                 dump(BE_CH_DUMP_LIVE, irg, chordal_env.cls, "-live", dump_ir_block_graph_sched);
 484
 485                 be_pre_spill_prepare_constr(&chordal_env);
 486                 dump(BE_CH_DUMP_CONSTR, irg, chordal_env.cls, "-constr-pre", dump_ir_block_graph_sched);
 487
 488                 BE_TIMER_PUSH(ra_timer.t_spill);
 489
 490                 /* spilling */
 491                 switch(options.spill_method) {
 492                 case BE_CH_SPILL_MORGAN:
 493                         be_spill_morgan(&chordal_env);
 494                         break;
 495                 case BE_CH_SPILL_BELADY:
 496                         be_spill_belady(&chordal_env);
 497                         break;
 498 #ifdef WITH_ILP
 499                 case BE_CH_SPILL_REMAT:
 500                         be_spill_remat(&chordal_env);
 501                         break;
 502 #endif /* WITH_ILP */
 503                 default:
 504                         fprintf(stderr, "no valid spiller selected. falling back to belady\n");
 505                         be_spill_belady(&chordal_env);
 506                 }
 507
 508                 BE_TIMER_POP(ra_timer.t_spill);
 509
 510                 DBG((chordal_env.dbg, LEVEL_1, "spill costs for %+F in regclass %s: %g\n",
 511                       irg,
 512                       chordal_env.cls->name,
 513                       get_irg_spill_cost(&chordal_env))
 514                     );
 515
 516                 dump(BE_CH_DUMP_SPILL, irg, chordal_env.cls, "-spill", dump_ir_block_graph_sched);
 517
 518                 check_for_memory_operands(&chordal_env);
 519
 520                 be_abi_fix_stack_nodes(bi->abi, chordal_env.lv);
 521
 522                 BE_TIMER_PUSH(ra_timer.t_verify);
 523
 524                 /* verify schedule and register pressure */
 525                 if (options.vrfy_option == BE_CH_VRFY_WARN) {
 526                         be_verify_schedule(irg);
 527                         be_verify_register_pressure(chordal_env.birg, chordal_env.cls, irg);
 528                 }
 529                 else if (options.vrfy_option == BE_CH_VRFY_ASSERT) {
 530                         assert(be_verify_schedule(irg) && "Schedule verification failed");
 531                         assert(be_verify_register_pressure(chordal_env.birg, chordal_env.cls, irg)
 532                                 && "Register pressure verification failed");
 533                 }
 534                 BE_TIMER_POP(ra_timer.t_verify);
 535
 536                 if (be_elr_split && ! splitted) {
 537                         extreme_liverange_splitting(&chordal_env);
 538                         splitted = 1;
 539                 }
 540
 541
 542                 /* Color the graph. */
 543                 BE_TIMER_PUSH(ra_timer.t_color);
 544                 be_ra_chordal_color(&chordal_env);
 545                 BE_TIMER_POP(ra_timer.t_color);
 546
 547                 dump(BE_CH_DUMP_CONSTR, irg, chordal_env.cls, "-color", dump_ir_block_graph_sched);
 548
 549                 /* Create the ifg with the selected flavor */
 550                 BE_TIMER_PUSH(ra_timer.t_ifg);
 551                 switch (options.ifg_flavor) {
 552                         default:
 553                                 fprintf(stderr, "no valid ifg flavour selected. falling back to std\n");
 554                         case BE_CH_IFG_STD:
 555                         case BE_CH_IFG_FAST:
 556                                 chordal_env.ifg = be_ifg_std_new(&chordal_env);
 557                                 break;
 558                         case BE_CH_IFG_CLIQUE:
 559                                 chordal_env.ifg = be_ifg_clique_new(&chordal_env);
 560                                 break;
 561                         case BE_CH_IFG_POINTER:
 562                                 chordal_env.ifg = be_ifg_pointer_new(&chordal_env);
 563                                 break;
 564                         case BE_CH_IFG_LIST:
 565                                 chordal_env.ifg = be_ifg_list_new(&chordal_env);
 566                                 break;
 567                         case BE_CH_IFG_CHECK:
 568                                 check_ifg_implementations(&chordal_env);
 569                                 /* Build the interference graph. */
 570                                 chordal_env.ifg = be_ifg_std_new(&chordal_env);
 571                                 break;
 572                 }
 573                 BE_TIMER_POP(ra_timer.t_ifg);
 574
 575                 BE_TIMER_PUSH(ra_timer.t_verify);
 576                 if (options.vrfy_option != BE_CH_VRFY_OFF)
 577                         be_ra_chordal_check(&chordal_env);
 578
 579                 BE_TIMER_POP(ra_timer.t_verify);
 580
 581                 /* copy minimization */
 582                 BE_TIMER_PUSH(ra_timer.t_copymin);
 583                 co_driver(&chordal_env);
 584                 BE_TIMER_POP(ra_timer.t_copymin);
 585                 dump(BE_CH_DUMP_COPYMIN, irg, chordal_env.cls, "-copymin", dump_ir_block_graph_sched);
 586
 587                 BE_TIMER_PUSH(ra_timer.t_verify);
 588
 589                 if (options.vrfy_option != BE_CH_VRFY_OFF)
 590                         be_ra_chordal_check(&chordal_env);
 591
 592                 BE_TIMER_POP(ra_timer.t_verify);
 593                 BE_TIMER_PUSH(ra_timer.t_ssa);
 594
 595                 /* ssa destruction */
 596                 be_ssa_destruction(&chordal_env);
 597
 598                 BE_TIMER_POP(ra_timer.t_ssa);
 599
 600                 dump(BE_CH_DUMP_SSADESTR, irg, chordal_env.cls, "-ssadestr", dump_ir_block_graph_sched);
 601
 602                 BE_TIMER_PUSH(ra_timer.t_verify);
 603                 if (options.vrfy_option != BE_CH_VRFY_OFF) {
 604                         be_ssa_destruction_check(&chordal_env);
 605                         be_ra_chordal_check(&chordal_env);
 606                 }
 607                 BE_TIMER_POP(ra_timer.t_verify);
 608
 609                 be_ifg_free(chordal_env.ifg);
 610                 pmap_destroy(chordal_env.border_heads);
 611                 bitset_free(chordal_env.ignore_colors);
 612         }
 613
 614         BE_TIMER_PUSH(ra_timer.t_spillslots);
 615
 616         be_coalesce_spillslots(&chordal_env);
 617         dump(BE_CH_DUMP_SPILLSLOTS, irg, NULL, "-spillslots", dump_ir_block_graph_sched);
 618
 619         BE_TIMER_POP(ra_timer.t_spillslots);
 620
 621         BE_TIMER_PUSH(ra_timer.t_verify);
 622
 623         /* verify spillslots */
 624         if (options.vrfy_option == BE_CH_VRFY_WARN) {
 625                 be_verify_spillslots(main_env->arch_env, irg);
 626         }
 627         else if (options.vrfy_option == BE_CH_VRFY_ASSERT) {
 628                 assert(be_verify_spillslots(main_env->arch_env, irg) && "Spillslot verification failed");
 629         }
 630         BE_TIMER_POP(ra_timer.t_verify);
 631
 632         BE_TIMER_PUSH(ra_timer.t_epilog);
 633
 634         dump(BE_CH_DUMP_LOWER, irg, NULL, "-spilloff", dump_ir_block_graph_sched);
 635
 636         lower_nodes_after_ra(&chordal_env, options.lower_perm_opt & BE_CH_LOWER_PERM_COPY ? 1 : 0);
 637         dump(BE_CH_DUMP_LOWER, irg, NULL, "-belower-after-ra", dump_ir_block_graph_sched);
 638
 639         obstack_free(&chordal_env.obst, NULL);
 640         be_free_dominance_frontiers(chordal_env.dom_front);
 641         be_liveness_free(chordal_env.lv);
 642         free_execfreq(chordal_env.exec_freq);
 643
 644         BE_TIMER_POP(ra_timer.t_epilog);
 645         BE_TIMER_POP(ra_timer.t_other);
 646
 647 #ifdef WITH_LIBCORE
 648         return main_opts->timing == BE_TIME_ON ? &ra_timer : NULL;
 649 #endif /* WITH_LIBCORE */
 650         return NULL;
 651 }
 652
 653 const be_ra_t be_ra_chordal_allocator = {
 654 #ifdef WITH_LIBCORE
 655         be_ra_chordal_register_options,
 656         be_ra_chordal_main
 657 #else
 658         0
 659 #endif
 660 };