gcc/sel-sched-dump.c

   1 /* Instruction scheduling pass.   Log dumping infrastructure.
   2    Copyright (C) 2006-2017 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20 #include "config.h"
  21 #include "system.h"
  22 #include "coretypes.h"
  23 #include "backend.h"
  24 #include "rtl.h"
  25 #include "df.h"
  26 #include "insn-attr.h"
  27 #include "cselib.h"
  28
  29 #ifdef INSN_SCHEDULING
  30 #include "regset.h"
  31 #include "sched-int.h"
  32 #include "cfgloop.h"
  33 #include "sel-sched-ir.h"
  34 #include "sel-sched-dump.h"
  35 #include "print-rtl.h"
  36 \f
  37
  38 /* These variables control high-level pretty printing.  */
  39 static int sel_dump_cfg_flags = SEL_DUMP_CFG_FLAGS;
  40 static int sel_debug_cfg_flags = SEL_DUMP_CFG_FLAGS;
  41
  42 /* True when a cfg should be dumped.  */
  43 static bool sel_dump_cfg_p;
  44
  45 /* Variables that are used to build the cfg dump file name.  */
  46 static const char * const sel_debug_cfg_root = "./";
  47 static const char * const sel_debug_cfg_root_postfix_default = "";
  48 static const char *sel_debug_cfg_root_postfix = "";
  49 static int sel_dump_cfg_fileno = -1;
  50 static int sel_debug_cfg_fileno = -1;
  51
  52 /* When this flag is on, we are dumping to the .dot file.
  53    When it is off, we are dumping to log.
  54    This is useful to differentiate formatting between log and .dot
  55    files.  */
  56 bool sched_dump_to_dot_p = false;
  57
  58 /* Controls how insns from a fence list should be dumped.  */
  59 static int dump_flist_insn_flags = (DUMP_INSN_UID | DUMP_INSN_BBN
  60                                     | DUMP_INSN_SEQNO);
  61 \f
  62
  63 /* The variable used to hold the value of sched_dump when temporarily
  64    switching dump output to the other source, e.g. the .dot file.  */
  65 static FILE *saved_sched_dump = NULL;
  66
  67 /* Switch sched_dump to TO.  It must not be called twice.  */
  68 static void
  69 switch_dump (FILE *to)
  70 {
  71   gcc_assert (saved_sched_dump == NULL);
  72
  73   saved_sched_dump = sched_dump;
  74   sched_dump = to;
  75 }
  76
  77 /* Restore previously switched dump.  */
  78 static void
  79 restore_dump (void)
  80 {
  81   sched_dump = saved_sched_dump;
  82   saved_sched_dump = NULL;
  83 }
  84 \f
  85
  86 /* Functions for dumping instructions, av sets, and exprs.  */
  87
  88 /* Default flags for dumping insns.  */
  89 static int dump_insn_rtx_flags = DUMP_INSN_RTX_UID | DUMP_INSN_RTX_PATTERN;
  90
  91 /* Default flags for dumping vinsns.  */
  92 static int dump_vinsn_flags = (DUMP_VINSN_INSN_RTX | DUMP_VINSN_TYPE
  93                                | DUMP_VINSN_COUNT);
  94
  95 /* Default flags for dumping expressions.  */
  96 static int dump_expr_flags = DUMP_EXPR_ALL;
  97
  98 /* Default flags for dumping insns when debugging.  */
  99 static int debug_insn_rtx_flags = DUMP_INSN_RTX_ALL;
 100
 101 /* Default flags for dumping vinsns when debugging.  */
 102 static int debug_vinsn_flags = DUMP_VINSN_ALL;
 103
 104 /* Default flags for dumping expressions when debugging.  */
 105 static int debug_expr_flags = DUMP_EXPR_ALL;
 106
 107 /* Controls how an insn from stream should be dumped when debugging.  */
 108 static int debug_insn_flags = DUMP_INSN_ALL;
 109
 110 /* Print an rtx X.  */
 111 void
 112 sel_print_rtl (rtx x)
 113 {
 114   print_rtl_single (sched_dump, x);
 115 }
 116
 117 /* Dump insn INSN honoring FLAGS.  */
 118 void
 119 dump_insn_rtx_1 (rtx insn, int flags)
 120 {
 121   int all;
 122
 123   /* flags == -1 also means dumping all.  */
 124   all = (flags & 1);;
 125   if (all)
 126     flags |= DUMP_INSN_RTX_ALL;
 127
 128   sel_print ("(");
 129
 130   if (flags & DUMP_INSN_RTX_UID)
 131     sel_print ("%d;", INSN_UID (insn));
 132
 133   if (flags & DUMP_INSN_RTX_PATTERN)
 134     sel_print ("%s;", str_pattern_slim (PATTERN (insn)));
 135
 136   if (flags & DUMP_INSN_RTX_BBN)
 137     {
 138       basic_block bb = BLOCK_FOR_INSN (insn);
 139
 140       sel_print ("bb:%d;", bb != NULL ? bb->index : -1);
 141     }
 142
 143   sel_print (")");
 144 }
 145
 146
 147 /* Dump INSN with default flags.  */
 148 void
 149 dump_insn_rtx (rtx insn)
 150 {
 151   dump_insn_rtx_1 (insn, dump_insn_rtx_flags);
 152 }
 153
 154
 155 /* Dump INSN to stderr.  */
 156 DEBUG_FUNCTION void
 157 debug_insn_rtx (rtx insn)
 158 {
 159   switch_dump (stderr);
 160   dump_insn_rtx_1 (insn, debug_insn_rtx_flags);
 161   sel_print ("\n");
 162   restore_dump ();
 163 }
 164
 165 /* Dump vinsn VI honoring flags.  */
 166 void
 167 dump_vinsn_1 (vinsn_t vi, int flags)
 168 {
 169   int all;
 170
 171   /* flags == -1 also means dumping all.  */
 172   all = flags & 1;
 173   if (all)
 174     flags |= DUMP_VINSN_ALL;
 175
 176   sel_print ("(");
 177
 178   if (flags & DUMP_VINSN_INSN_RTX)
 179     dump_insn_rtx_1 (VINSN_INSN_RTX (vi), dump_insn_rtx_flags | all);
 180
 181   if (flags & DUMP_VINSN_TYPE)
 182     sel_print ("type:%s;", GET_RTX_NAME (VINSN_TYPE (vi)));
 183
 184   if (flags & DUMP_VINSN_COUNT)
 185     sel_print ("count:%d;", VINSN_COUNT (vi));
 186
 187   if (flags & DUMP_VINSN_COST)
 188     {
 189       int cost = vi->cost;
 190
 191       if (cost != -1)
 192         sel_print ("cost:%d;", cost);
 193     }
 194
 195   sel_print (")");
 196 }
 197
 198 /* Dump vinsn VI with default flags.  */
 199 void
 200 dump_vinsn (vinsn_t vi)
 201 {
 202   dump_vinsn_1 (vi, dump_vinsn_flags);
 203 }
 204
 205 DEBUG_FUNCTION void
 206 debug (vinsn_def &ref)
 207 {
 208   switch_dump (stderr);
 209   dump_vinsn_1 (&ref, dump_vinsn_flags);
 210   sel_print ("\n");
 211   restore_dump ();
 212 }
 213
 214 DEBUG_FUNCTION void
 215 debug (vinsn_def *ptr)
 216 {
 217   if (ptr)
 218     debug (*ptr);
 219   else
 220     fprintf (stderr, "<nil>\n");
 221 }
 222
 223 DEBUG_FUNCTION void
 224 debug_verbose (vinsn_def &ref)
 225 {
 226   switch_dump (stderr);
 227   dump_vinsn_1 (&ref, debug_vinsn_flags);
 228   sel_print ("\n");
 229   restore_dump ();
 230 }
 231
 232 DEBUG_FUNCTION void
 233 debug_verbose (vinsn_def *ptr)
 234 {
 235   if (ptr)
 236     debug (*ptr);
 237   else
 238     fprintf (stderr, "<nil>\n");
 239 }
 240
 241 /* Dump vinsn VI to stderr.  */
 242 DEBUG_FUNCTION void
 243 debug_vinsn (vinsn_t vi)
 244 {
 245   switch_dump (stderr);
 246   dump_vinsn_1 (vi, debug_vinsn_flags);
 247   sel_print ("\n");
 248   restore_dump ();
 249 }
 250
 251 /* Dump EXPR honoring flags.  */
 252 void
 253 dump_expr_1 (expr_t expr, int flags)
 254 {
 255   int all;
 256
 257   /* flags == -1 also means dumping all.  */
 258   all = flags & 1;
 259   if (all)
 260     flags |= DUMP_EXPR_ALL;
 261
 262   sel_print ("[");
 263
 264   if (flags & DUMP_EXPR_VINSN)
 265     dump_vinsn_1 (EXPR_VINSN (expr), dump_vinsn_flags | all);
 266
 267   if (flags & DUMP_EXPR_SPEC)
 268     {
 269       int spec = EXPR_SPEC (expr);
 270
 271       if (spec != 0)
 272         sel_print ("spec:%d;", spec);
 273     }
 274
 275   if (flags & DUMP_EXPR_USEFULNESS)
 276     {
 277       int use = EXPR_USEFULNESS (expr);
 278
 279       if (use != REG_BR_PROB_BASE)
 280         sel_print ("use:%d;", use);
 281     }
 282
 283   if (flags & DUMP_EXPR_PRIORITY)
 284     sel_print ("prio:%d;", EXPR_PRIORITY (expr));
 285
 286   if (flags & DUMP_EXPR_SCHED_TIMES)
 287     {
 288       int times = EXPR_SCHED_TIMES (expr);
 289
 290       if (times != 0)
 291         sel_print ("times:%d;", times);
 292     }
 293
 294   if (flags & DUMP_EXPR_SPEC_DONE_DS)
 295     {
 296       ds_t spec_done_ds = EXPR_SPEC_DONE_DS (expr);
 297
 298       if (spec_done_ds != 0)
 299         sel_print ("ds:%d;", spec_done_ds);
 300     }
 301
 302   if (flags & DUMP_EXPR_ORIG_BB)
 303     {
 304       int orig_bb = EXPR_ORIG_BB_INDEX (expr);
 305
 306       if (orig_bb != 0)
 307         sel_print ("orig_bb:%d;", orig_bb);
 308     }
 309
 310   if (EXPR_TARGET_AVAILABLE (expr) < 1)
 311     sel_print ("target:%d;", EXPR_TARGET_AVAILABLE (expr));
 312   sel_print ("]");
 313 }
 314
 315 /* Dump expression EXPR with default flags.  */
 316 void
 317 dump_expr (expr_t expr)
 318 {
 319   dump_expr_1 (expr, dump_expr_flags);
 320 }
 321
 322 /* Dump expression EXPR to stderr.  */
 323 DEBUG_FUNCTION void
 324 debug_expr (expr_t expr)
 325 {
 326   switch_dump (stderr);
 327   dump_expr_1 (expr, debug_expr_flags);
 328   sel_print ("\n");
 329   restore_dump ();
 330 }
 331
 332 /* Dump expression REF.  */
 333
 334 DEBUG_FUNCTION void
 335 debug (expr_def &ref)
 336 {
 337   switch_dump (stderr);
 338   dump_expr_1 (&ref, 0);
 339   sel_print ("\n");
 340   restore_dump ();
 341 }
 342
 343 DEBUG_FUNCTION void
 344 debug (expr_def *ptr)
 345 {
 346   if (ptr)
 347     debug (*ptr);
 348   else
 349     fprintf (stderr, "<nil>\n");
 350 }
 351
 352 /* Dump expression REF verbosely.  */
 353
 354 DEBUG_FUNCTION void
 355 debug_verbose (expr_def &ref)
 356 {
 357   switch_dump (stderr);
 358   dump_expr_1 (&ref, DUMP_EXPR_ALL);
 359   sel_print ("\n");
 360   restore_dump ();
 361 }
 362
 363 DEBUG_FUNCTION void
 364 debug_verbose (expr_def *ptr)
 365 {
 366   if (ptr)
 367     debug_verbose (*ptr);
 368   else
 369     fprintf (stderr, "<nil>\n");
 370 }
 371
 372 /* Dump insn I honoring FLAGS.  */
 373 void
 374 dump_insn_1 (insn_t i, int flags)
 375 {
 376   int all;
 377
 378   all = flags & 1;
 379   if (all)
 380     flags |= DUMP_INSN_ALL;
 381
 382   if (!sched_dump_to_dot_p)
 383     sel_print ("(");
 384
 385   if (flags & DUMP_INSN_EXPR)
 386     {
 387       dump_expr_1 (INSN_EXPR (i), dump_expr_flags | all);
 388       sel_print (";");
 389     }
 390   else if (flags & DUMP_INSN_PATTERN)
 391     {
 392       dump_insn_rtx_1 (i, DUMP_INSN_RTX_PATTERN | all);
 393       sel_print (";");
 394     }
 395   else if (flags & DUMP_INSN_UID)
 396     sel_print ("uid:%d;", INSN_UID (i));
 397
 398   if (flags & DUMP_INSN_SEQNO)
 399     sel_print ("seqno:%d;", INSN_SEQNO (i));
 400
 401   if (flags & DUMP_INSN_SCHED_CYCLE)
 402     {
 403       int cycle = INSN_SCHED_CYCLE (i);
 404
 405       if (cycle != 0)
 406         sel_print ("cycle:%d;", cycle);
 407     }
 408
 409   if (!sched_dump_to_dot_p)
 410     sel_print (")");
 411 }
 412
 413 /* Dump insn I with default flags.  */
 414 void
 415 dump_insn (insn_t i)
 416 {
 417   dump_insn_1 (i, DUMP_INSN_EXPR | DUMP_INSN_SCHED_CYCLE);
 418 }
 419
 420 /* Dump INSN to stderr.  */
 421 DEBUG_FUNCTION void
 422 debug_insn (insn_t insn)
 423 {
 424   switch_dump (stderr);
 425   dump_insn_1 (insn, debug_insn_flags);
 426   sel_print ("\n");
 427   restore_dump ();
 428 }
 429
 430 /* Dumps av_set AV.  */
 431 void
 432 dump_av_set (av_set_t av)
 433 {
 434   av_set_iterator i;
 435   expr_t expr;
 436
 437   if (!sched_dump_to_dot_p)
 438     sel_print ("{");
 439
 440   FOR_EACH_EXPR (expr, i, av)
 441     {
 442       dump_expr (expr);
 443       if (!sched_dump_to_dot_p)
 444         sel_print (" ");
 445       else
 446         sel_print ("\n");
 447     }
 448
 449   if (!sched_dump_to_dot_p)
 450     sel_print ("}");
 451 }
 452
 453 /* Dumps lvset LV.  */
 454 void
 455 dump_lv_set (regset lv)
 456 {
 457   sel_print ("{");
 458
 459   /* This code was adapted from cfg.c: dump_regset ().  */
 460   if (lv == NULL)
 461     sel_print ("nil");
 462   else
 463     {
 464       unsigned i;
 465       reg_set_iterator rsi;
 466       int count = 0;
 467
 468       EXECUTE_IF_SET_IN_REG_SET (lv, 0, i, rsi)
 469         {
 470           sel_print (" %d", i);
 471           if (i < FIRST_PSEUDO_REGISTER)
 472             {
 473               sel_print (" [%s]", reg_names[i]);
 474               ++count;
 475             }
 476
 477           ++count;
 478
 479           if (sched_dump_to_dot_p && count == 12)
 480             {
 481               count = 0;
 482               sel_print ("\n");
 483             }
 484         }
 485     }
 486
 487   sel_print ("}\n");
 488 }
 489
 490 /* Dumps a list of instructions pointed to by P.  */
 491 static void
 492 dump_ilist (ilist_t p)
 493 {
 494   while (p)
 495     {
 496       dump_insn (ILIST_INSN (p));
 497       p = ILIST_NEXT (p);
 498     }
 499 }
 500
 501 /* Dumps a list of boundaries pointed to by BNDS.  */
 502 void
 503 dump_blist (blist_t bnds)
 504 {
 505   for (; bnds; bnds = BLIST_NEXT (bnds))
 506     {
 507       bnd_t bnd = BLIST_BND (bnds);
 508
 509       sel_print ("[to: %d; ptr: ", INSN_UID (BND_TO (bnd)));
 510       dump_ilist (BND_PTR (bnd));
 511       sel_print ("] ");
 512     }
 513 }
 514
 515 /* Dumps a list of fences pointed to by L.  */
 516 void
 517 dump_flist (flist_t l)
 518 {
 519   while (l)
 520     {
 521       dump_insn_1 (FENCE_INSN (FLIST_FENCE (l)), dump_flist_insn_flags);
 522       sel_print (" ");
 523       l = FLIST_NEXT (l);
 524     }
 525 }
 526
 527 /* Dumps an insn vector SUCCS.  */
 528 void
 529 dump_insn_vector (rtx_vec_t succs)
 530 {
 531   int i;
 532   rtx_insn *succ;
 533
 534   FOR_EACH_VEC_ELT (succs, i, succ)
 535     if (succ)
 536       dump_insn (succ);
 537     else
 538       sel_print ("NULL ");
 539 }
 540
 541 /* Dumps a hard reg set SET to FILE using PREFIX.  */
 542 static void
 543 print_hard_reg_set (FILE *file, const char *prefix, HARD_REG_SET set)
 544 {
 545   int i;
 546
 547   fprintf (file, "%s{ ", prefix);
 548   for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
 549     {
 550       if (TEST_HARD_REG_BIT (set, i))
 551         fprintf (file, "%d ", i);
 552     }
 553   fprintf (file, "}\n");
 554 }
 555
 556 /* Dumps a hard reg set SET using PREFIX.  */
 557 void
 558 dump_hard_reg_set (const char *prefix, HARD_REG_SET set)
 559 {
 560   print_hard_reg_set (sched_dump, prefix, set);
 561 }
 562
 563 /* Pretty print INSN.  This is used as a hook.  */
 564 const char *
 565 sel_print_insn (const rtx_insn *insn, int aligned ATTRIBUTE_UNUSED)
 566 {
 567   static char buf[80];
 568
 569   /* '+' before insn means it is a new cycle start and it's not been
 570      scheduled yet.  '>' - has been scheduled.  */
 571   if (s_i_d.exists () && INSN_LUID (insn) > 0)
 572     if (GET_MODE (insn) == TImode)
 573       sprintf (buf, "%s %4d",
 574                INSN_SCHED_TIMES (insn) > 0 ? "> " : "< ",
 575                INSN_UID (insn));
 576     else
 577       sprintf (buf, "%s %4d",
 578                INSN_SCHED_TIMES (insn) > 0 ? "! " : "  ",
 579                INSN_UID (insn));
 580   else
 581     if (GET_MODE (insn) == TImode)
 582       sprintf (buf, "+ %4d", INSN_UID (insn));
 583     else
 584       sprintf (buf, "  %4d", INSN_UID (insn));
 585
 586   return buf;
 587 }
 588 \f
 589
 590 /* Functions for pretty printing of CFG.  */
 591 /* FIXME: Using pretty-print here could simplify this stuff.  */
 592
 593 /* Replace all occurencies of STR1 to STR2 in BUF.
 594    The BUF must be large enough to hold the result.  */
 595 static void
 596 replace_str_in_buf (char *buf, const char *str1, const char *str2)
 597 {
 598   int buf_len = strlen (buf);
 599   int str1_len = strlen (str1);
 600   int str2_len = strlen (str2);
 601   int diff = str2_len - str1_len;
 602
 603   char *p = buf;
 604   do
 605     {
 606       p = strstr (p, str1);
 607       if (p)
 608         {
 609           char *p1 = p + str1_len;
 610           /* Copy the rest of buf and '\0'.  */
 611           int n = buf + buf_len - p1;
 612           int i;
 613
 614           /* Shift str by DIFF chars.  */
 615           if (diff > 0)
 616             for (i = n; i >= 0; i--)
 617               p1[i + diff] = p1[i];
 618           else
 619             for (i = 0; i <= n; i++)
 620               p1[i + diff] = p1[i];
 621
 622           /* Copy str2.  */
 623           for (i = 0; i < str2_len; i++)
 624             p[i] = str2[i];
 625
 626           p += str2_len;
 627           buf_len += diff;
 628         }
 629
 630     }
 631   while (p);
 632 }
 633
 634 /* Replace characters in BUF that have special meaning in .dot file.
 635    Similar to pp_write_text_as_dot_label_to_stream.  */
 636 static void
 637 sel_prepare_string_for_dot_label (char *buf)
 638 {
 639   static char specials_from[7][2] = { "<", ">", "{", "|", "}", "\"",
 640                                       "\n" };
 641   static char specials_to[7][3] = { "\\<", "\\>", "\\{", "\\|", "\\}",
 642                                     "\\\"", "\\l" };
 643   unsigned i;
 644
 645   for (i = 0; i < 7; i++)
 646     replace_str_in_buf (buf, specials_from[i], specials_to[i]);
 647 }
 648
 649 /* This function acts like printf but dumps to the sched_dump file.  */
 650 void
 651 sel_print (const char *fmt, ...)
 652 {
 653   va_list ap;
 654   va_start (ap, fmt);
 655   if (sched_dump_to_dot_p)
 656     {
 657       char *message;
 658       if (vasprintf (&message, fmt, ap) >= 0 && message != NULL)
 659         {
 660           message = (char *) xrealloc (message, 2 * strlen (message) + 1);
 661           sel_prepare_string_for_dot_label (message);
 662           fprintf (sched_dump, "%s", message);
 663           free (message);
 664         }
 665     }
 666   else
 667     vfprintf (sched_dump, fmt, ap);
 668   va_end (ap);
 669 }
 670
 671 /* Dump INSN with FLAGS.  */
 672 static void
 673 sel_dump_cfg_insn (insn_t insn, int flags)
 674 {
 675   int insn_flags = DUMP_INSN_UID | DUMP_INSN_PATTERN;
 676
 677   if (sched_luids.exists () && INSN_LUID (insn) > 0)
 678     {
 679       if (flags & SEL_DUMP_CFG_INSN_SEQNO)
 680         insn_flags |= DUMP_INSN_SEQNO | DUMP_INSN_SCHED_CYCLE | DUMP_INSN_EXPR;
 681     }
 682
 683   dump_insn_1 (insn, insn_flags);
 684 }
 685
 686 /* Dump E to the dot file F.  */
 687 static void
 688 sel_dump_cfg_edge (FILE *f, edge e)
 689 {
 690   int w;
 691   const char *color;
 692
 693   if (e->flags & EDGE_FALLTHRU)
 694     {
 695       w = 10;
 696       color = ", color = red";
 697     }
 698   else if (e->src->next_bb == e->dest)
 699     {
 700       w = 3;
 701       color = ", color = blue";
 702     }
 703   else
 704     {
 705       w = 1;
 706       color = "";
 707     }
 708
 709   fprintf (f, "\tbb%d -> bb%d [weight = %d%s];\n",
 710            e->src->index, e->dest->index, w, color);
 711 }
 712
 713
 714 /* Return true if BB has a predesessor from current region.
 715    TODO: Either make this function to trace back through empty block
 716    or just remove those empty blocks.  */
 717 static bool
 718 has_preds_in_current_region_p (basic_block bb)
 719 {
 720   edge e;
 721   edge_iterator ei;
 722
 723   gcc_assert (!in_current_region_p (bb));
 724
 725   FOR_EACH_EDGE (e, ei, bb->preds)
 726     if (in_current_region_p (e->src))
 727       return true;
 728
 729   return false;
 730 }
 731
 732 /* Dump a cfg region to the dot file F honoring FLAGS.  */
 733 static void
 734 sel_dump_cfg_2 (FILE *f, int flags)
 735 {
 736   basic_block bb;
 737
 738   sched_dump_to_dot_p = true;
 739   switch_dump (f);
 740
 741   fprintf (f, "digraph G {\n"
 742            "\tratio = 2.25;\n"
 743            "\tnode [shape = record, fontsize = 9];\n");
 744
 745   if (flags & SEL_DUMP_CFG_FUNCTION_NAME)
 746     fprintf (f, "function [label = \"%s\"];\n", current_function_name ());
 747
 748   FOR_EACH_BB_FN (bb, cfun)
 749     {
 750       insn_t insn = BB_HEAD (bb);
 751       insn_t next_tail = NEXT_INSN (BB_END (bb));
 752       edge e;
 753       edge_iterator ei;
 754       bool in_region_p = ((flags & SEL_DUMP_CFG_CURRENT_REGION)
 755                           && in_current_region_p (bb));
 756       bool full_p = (!(flags & SEL_DUMP_CFG_CURRENT_REGION)
 757                      || in_region_p);
 758       bool some_p = full_p || has_preds_in_current_region_p (bb);
 759       const char *color;
 760       const char *style;
 761
 762       if (!some_p)
 763         continue;
 764
 765       if ((flags & SEL_DUMP_CFG_CURRENT_REGION)
 766           && in_current_region_p (bb)
 767           && BLOCK_TO_BB (bb->index) == 0)
 768         color = "color = green, ";
 769       else
 770         color = "";
 771
 772       if ((flags & SEL_DUMP_CFG_FENCES)
 773           && in_region_p)
 774         {
 775           style = "";
 776
 777           if (!sel_bb_empty_p (bb))
 778             {
 779               bool first_p = true;
 780               insn_t tail = BB_END (bb);
 781               insn_t cur_insn;
 782
 783               cur_insn = bb_note (bb);
 784
 785               do
 786                 {
 787                   fence_t fence;
 788
 789                   cur_insn = NEXT_INSN (cur_insn);
 790                   fence = flist_lookup (fences, cur_insn);
 791
 792                   if (fence != NULL)
 793                     {
 794                       if (!FENCE_SCHEDULED_P (fence))
 795                         {
 796                           if (first_p)
 797                             color = "color = red, ";
 798                           else
 799                             color = "color = yellow, ";
 800                         }
 801                       else
 802                         color = "color = blue, ";
 803                     }
 804
 805                   first_p = false;
 806                 }
 807               while (cur_insn != tail);
 808             }
 809         }
 810       else if (!full_p)
 811         style = "style = dashed, ";
 812       else
 813         style = "";
 814
 815       fprintf (f, "\tbb%d [%s%slabel = \"{Basic block %d", bb->index,
 816                style, color, bb->index);
 817
 818       if ((flags & SEL_DUMP_CFG_BB_LOOP)
 819           && bb->loop_father != NULL)
 820         fprintf (f, ", loop %d", bb->loop_father->num);
 821
 822       if (full_p
 823           && (flags & SEL_DUMP_CFG_BB_NOTES_LIST))
 824         {
 825           insn_t notes = BB_NOTE_LIST (bb);
 826
 827           if (notes != NULL_RTX)
 828             {
 829               fprintf (f, "|");
 830
 831               /* For simplicity, we dump notes from note_list in reversed order
 832                  to that what they will appear in the code.  */
 833               while (notes != NULL_RTX)
 834                 {
 835                   sel_dump_cfg_insn (notes, flags);
 836                   fprintf (f, "\\l");
 837
 838                   notes = PREV_INSN (notes);
 839                 }
 840             }
 841         }
 842
 843       if (full_p
 844           && (flags & SEL_DUMP_CFG_AV_SET)
 845           && in_current_region_p (bb)
 846           && !sel_bb_empty_p (bb))
 847         {
 848           fprintf (f, "|");
 849
 850           if (BB_AV_SET_VALID_P (bb))
 851             dump_av_set (BB_AV_SET (bb));
 852           else if (BB_AV_LEVEL (bb) == -1)
 853             fprintf (f, "AV_SET needs update");
 854         }
 855
 856       if ((flags & SEL_DUMP_CFG_LV_SET)
 857           && !sel_bb_empty_p (bb))
 858         {
 859           fprintf (f, "|");
 860
 861           if (BB_LV_SET_VALID_P (bb))
 862             dump_lv_set (BB_LV_SET (bb));
 863           else
 864             fprintf (f, "LV_SET needs update");
 865         }
 866
 867       if (full_p
 868           && (flags & SEL_DUMP_CFG_BB_INSNS))
 869         {
 870           fprintf (f, "|");
 871           while (insn != next_tail)
 872             {
 873               sel_dump_cfg_insn (insn, flags);
 874               fprintf (f, "\\l");
 875
 876               insn = NEXT_INSN (insn);
 877             }
 878         }
 879
 880       fprintf (f, "}\"];\n");
 881
 882       FOR_EACH_EDGE (e, ei, bb->succs)
 883         if (full_p || in_current_region_p (e->dest))
 884           sel_dump_cfg_edge (f, e);
 885     }
 886
 887   fprintf (f, "}");
 888
 889   restore_dump ();
 890   sched_dump_to_dot_p = false;
 891 }
 892
 893 /* Dump a cfg region to the file specified by TAG honoring flags.
 894    The file is created by the function.  */
 895 static void
 896 sel_dump_cfg_1 (const char *tag, int flags)
 897 {
 898   char *buf;
 899   int i;
 900   FILE *f;
 901
 902   ++sel_dump_cfg_fileno;
 903
 904   if (!sel_dump_cfg_p)
 905     return;
 906
 907   i = 1 + snprintf (NULL, 0, "%s/%s%05d-%s.dot", sel_debug_cfg_root,
 908                     sel_debug_cfg_root_postfix, sel_dump_cfg_fileno, tag);
 909   buf = XNEWVEC (char, i);
 910   snprintf (buf, i, "%s/%s%05d-%s.dot", sel_debug_cfg_root,
 911             sel_debug_cfg_root_postfix, sel_dump_cfg_fileno, tag);
 912
 913   f = fopen (buf, "w");
 914
 915   if (f == NULL)
 916     fprintf (stderr, "Can't create file: %s.\n", buf);
 917   else
 918     {
 919       sel_dump_cfg_2 (f, flags);
 920
 921       fclose (f);
 922     }
 923
 924   free (buf);
 925 }
 926
 927 /* Setup cfg dumping flags.  Used for debugging.  */
 928 void
 929 setup_dump_cfg_params (void)
 930 {
 931   sel_dump_cfg_flags = SEL_DUMP_CFG_FLAGS;
 932   sel_dump_cfg_p = 0;
 933   sel_debug_cfg_root_postfix = sel_debug_cfg_root_postfix_default;
 934 }
 935
 936 /* Debug a cfg region with FLAGS.  */
 937 void
 938 sel_debug_cfg_1 (int flags)
 939 {
 940   bool t1 = sel_dump_cfg_p;
 941   int t2 = sel_dump_cfg_fileno;
 942
 943   sel_dump_cfg_p = true;
 944   sel_dump_cfg_fileno = ++sel_debug_cfg_fileno;
 945
 946   sel_dump_cfg_1 ("sel-debug-cfg", flags);
 947
 948   sel_dump_cfg_fileno = t2;
 949   sel_dump_cfg_p = t1;
 950 }
 951 \f
 952 /* Dumps av_set AV to stderr.  */
 953 DEBUG_FUNCTION void
 954 debug_av_set (av_set_t av)
 955 {
 956   switch_dump (stderr);
 957   dump_av_set (av);
 958   sel_print ("\n");
 959   restore_dump ();
 960 }
 961
 962 /* Dump LV to stderr.  */
 963 DEBUG_FUNCTION void
 964 debug_lv_set (regset lv)
 965 {
 966   switch_dump (stderr);
 967   dump_lv_set (lv);
 968   sel_print ("\n");
 969   restore_dump ();
 970 }
 971
 972 /* Dump an instruction list P to stderr.  */
 973 DEBUG_FUNCTION void
 974 debug_ilist (ilist_t p)
 975 {
 976   switch_dump (stderr);
 977   dump_ilist (p);
 978   sel_print ("\n");
 979   restore_dump ();
 980 }
 981
 982 /* Dump a boundary list BNDS to stderr.  */
 983 DEBUG_FUNCTION void
 984 debug_blist (blist_t bnds)
 985 {
 986   switch_dump (stderr);
 987   dump_blist (bnds);
 988   sel_print ("\n");
 989   restore_dump ();
 990 }
 991
 992 /* Dump a rtx vector REF.  */
 993 DEBUG_FUNCTION void
 994 debug (vec<rtx_insn *> &ref)
 995 {
 996   switch_dump (stderr);
 997   dump_insn_vector (ref);
 998   sel_print ("\n");
 999   restore_dump ();
1000 }
1001
1002 DEBUG_FUNCTION void
1003 debug (vec<rtx_insn *> *ptr)
1004 {
1005   if (ptr)
1006     debug (*ptr);
1007   else
1008     fprintf (stderr, "<nil>\n");
1009 }
1010
1011 /* Dump an insn vector SUCCS.  */
1012 DEBUG_FUNCTION void
1013 debug_insn_vector (rtx_vec_t succs)
1014 {
1015   switch_dump (stderr);
1016   dump_insn_vector (succs);
1017   sel_print ("\n");
1018   restore_dump ();
1019 }
1020
1021 /* Dump a hard reg set SET to stderr.  */
1022 DEBUG_FUNCTION void
1023 debug_hard_reg_set (HARD_REG_SET set)
1024 {
1025   switch_dump (stderr);
1026   dump_hard_reg_set ("", set);
1027   sel_print ("\n");
1028   restore_dump ();
1029 }
1030
1031 /* Debug a cfg region with default flags.  */
1032 void
1033 sel_debug_cfg (void)
1034 {
1035   sel_debug_cfg_1 (sel_debug_cfg_flags);
1036 }
1037
1038 /* Print a current cselib value for X's address to stderr.  */
1039 DEBUG_FUNCTION rtx
1040 debug_mem_addr_value (rtx x)
1041 {
1042   rtx t, addr;
1043   machine_mode address_mode;
1044
1045   gcc_assert (MEM_P (x));
1046   address_mode = get_address_mode (x);
1047
1048   t = shallow_copy_rtx (x);
1049   if (cselib_lookup (XEXP (t, 0), address_mode, 0, GET_MODE (t)))
1050     XEXP (t, 0) = cselib_subst_to_values (XEXP (t, 0), GET_MODE (t));
1051
1052   t = canon_rtx (t);
1053   addr = get_addr (XEXP (t, 0));
1054   debug_rtx (t);
1055   debug_rtx (addr);
1056   return t;
1057 }
1058 #endif
1059