gcc/sel-sched-dump.cc

   1 /* Instruction scheduling pass.   Log dumping infrastructure.
   2    Copyright (C) 2006-2024 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.cc: 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   for (rtx_insn *succ : succs)
 532     if (succ)
 533       dump_insn (succ);
 534     else
 535       sel_print ("NULL ");
 536 }
 537
 538 /* Dumps a hard reg set SET to FILE using PREFIX.  */
 539 static void
 540 print_hard_reg_set (FILE *file, const char *prefix, HARD_REG_SET set)
 541 {
 542   int i;
 543
 544   fprintf (file, "%s{ ", prefix);
 545   for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
 546     {
 547       if (TEST_HARD_REG_BIT (set, i))
 548         fprintf (file, "%d ", i);
 549     }
 550   fprintf (file, "}\n");
 551 }
 552
 553 /* Dumps a hard reg set SET using PREFIX.  */
 554 void
 555 dump_hard_reg_set (const char *prefix, HARD_REG_SET set)
 556 {
 557   print_hard_reg_set (sched_dump, prefix, set);
 558 }
 559
 560 /* Pretty print INSN.  This is used as a hook.  */
 561 const char *
 562 sel_print_insn (const rtx_insn *insn, int aligned ATTRIBUTE_UNUSED)
 563 {
 564   static char buf[80];
 565
 566   /* '+' before insn means it is a new cycle start and it's not been
 567      scheduled yet.  '>' - has been scheduled.  */
 568   if (s_i_d.exists () && INSN_LUID (insn) > 0)
 569     if (GET_MODE (insn) == TImode)
 570       sprintf (buf, "%s %4d",
 571                INSN_SCHED_TIMES (insn) > 0 ? "> " : "< ",
 572                INSN_UID (insn));
 573     else
 574       sprintf (buf, "%s %4d",
 575                INSN_SCHED_TIMES (insn) > 0 ? "! " : "  ",
 576                INSN_UID (insn));
 577   else
 578     if (GET_MODE (insn) == TImode)
 579       sprintf (buf, "+ %4d", INSN_UID (insn));
 580     else
 581       sprintf (buf, "  %4d", INSN_UID (insn));
 582
 583   return buf;
 584 }
 585 \f
 586
 587 /* Functions for pretty printing of CFG.  */
 588 /* FIXME: Using pretty-print here could simplify this stuff.  */
 589
 590 /* Replace all occurencies of STR1 to STR2 in BUF.
 591    The BUF must be large enough to hold the result.  */
 592 static void
 593 replace_str_in_buf (char *buf, const char *str1, const char *str2)
 594 {
 595   int buf_len = strlen (buf);
 596   int str1_len = strlen (str1);
 597   int str2_len = strlen (str2);
 598   int diff = str2_len - str1_len;
 599
 600   char *p = buf;
 601   do
 602     {
 603       p = strstr (p, str1);
 604       if (p)
 605         {
 606           char *p1 = p + str1_len;
 607           /* Copy the rest of buf and '\0'.  */
 608           int n = buf + buf_len - p1;
 609           int i;
 610
 611           /* Shift str by DIFF chars.  */
 612           if (diff > 0)
 613             for (i = n; i >= 0; i--)
 614               p1[i + diff] = p1[i];
 615           else
 616             for (i = 0; i <= n; i++)
 617               p1[i + diff] = p1[i];
 618
 619           /* Copy str2.  */
 620           for (i = 0; i < str2_len; i++)
 621             p[i] = str2[i];
 622
 623           p += str2_len;
 624           buf_len += diff;
 625         }
 626
 627     }
 628   while (p);
 629 }
 630
 631 /* Replace characters in BUF that have special meaning in .dot file.
 632    Similar to pp_write_text_as_dot_label_to_stream.  */
 633 static void
 634 sel_prepare_string_for_dot_label (char *buf)
 635 {
 636   static char specials_from[7][2] = { "<", ">", "{", "|", "}", "\"",
 637                                       "\n" };
 638   static char specials_to[7][3] = { "\\<", "\\>", "\\{", "\\|", "\\}",
 639                                     "\\\"", "\\l" };
 640   unsigned i;
 641
 642   for (i = 0; i < 7; i++)
 643     replace_str_in_buf (buf, specials_from[i], specials_to[i]);
 644 }
 645
 646 /* This function acts like printf but dumps to the sched_dump file.  */
 647 void
 648 sel_print (const char *fmt, ...)
 649 {
 650   va_list ap;
 651   va_start (ap, fmt);
 652   if (sched_dump_to_dot_p)
 653     {
 654       char *message;
 655       if (vasprintf (&message, fmt, ap) >= 0 && message != NULL)
 656         {
 657           message = (char *) xrealloc (message, 2 * strlen (message) + 1);
 658           sel_prepare_string_for_dot_label (message);
 659           fprintf (sched_dump, "%s", message);
 660           free (message);
 661         }
 662     }
 663   else
 664     vfprintf (sched_dump, fmt, ap);
 665   va_end (ap);
 666 }
 667
 668 /* Dump INSN with FLAGS.  */
 669 static void
 670 sel_dump_cfg_insn (insn_t insn, int flags)
 671 {
 672   int insn_flags = DUMP_INSN_UID | DUMP_INSN_PATTERN;
 673
 674   if (sched_luids.exists () && INSN_LUID (insn) > 0)
 675     {
 676       if (flags & SEL_DUMP_CFG_INSN_SEQNO)
 677         insn_flags |= DUMP_INSN_SEQNO | DUMP_INSN_SCHED_CYCLE | DUMP_INSN_EXPR;
 678     }
 679
 680   dump_insn_1 (insn, insn_flags);
 681 }
 682
 683 /* Dump E to the dot file F.  */
 684 static void
 685 sel_dump_cfg_edge (FILE *f, edge e)
 686 {
 687   int w;
 688   const char *color;
 689
 690   if (e->flags & EDGE_FALLTHRU)
 691     {
 692       w = 10;
 693       color = ", color = red";
 694     }
 695   else if (e->src->next_bb == e->dest)
 696     {
 697       w = 3;
 698       color = ", color = blue";
 699     }
 700   else
 701     {
 702       w = 1;
 703       color = "";
 704     }
 705
 706   fprintf (f, "\tbb%d -> bb%d [weight = %d%s];\n",
 707            e->src->index, e->dest->index, w, color);
 708 }
 709
 710
 711 /* Return true if BB has a predesessor from current region.
 712    TODO: Either make this function to trace back through empty block
 713    or just remove those empty blocks.  */
 714 static bool
 715 has_preds_in_current_region_p (basic_block bb)
 716 {
 717   edge e;
 718   edge_iterator ei;
 719
 720   gcc_assert (!in_current_region_p (bb));
 721
 722   FOR_EACH_EDGE (e, ei, bb->preds)
 723     if (in_current_region_p (e->src))
 724       return true;
 725
 726   return false;
 727 }
 728
 729 /* Dump a cfg region to the dot file F honoring FLAGS.  */
 730 static void
 731 sel_dump_cfg_2 (FILE *f, int flags)
 732 {
 733   basic_block bb;
 734
 735   sched_dump_to_dot_p = true;
 736   switch_dump (f);
 737
 738   fprintf (f, "digraph G {\n"
 739            "\tratio = 2.25;\n"
 740            "\tnode [shape = record, fontsize = 9];\n");
 741
 742   if (flags & SEL_DUMP_CFG_FUNCTION_NAME)
 743     fprintf (f, "function [label = \"%s\"];\n", current_function_name ());
 744
 745   FOR_EACH_BB_FN (bb, cfun)
 746     {
 747       insn_t insn = BB_HEAD (bb);
 748       insn_t next_tail = NEXT_INSN (BB_END (bb));
 749       edge e;
 750       edge_iterator ei;
 751       bool in_region_p = ((flags & SEL_DUMP_CFG_CURRENT_REGION)
 752                           && in_current_region_p (bb));
 753       bool full_p = (!(flags & SEL_DUMP_CFG_CURRENT_REGION)
 754                      || in_region_p);
 755       bool some_p = full_p || has_preds_in_current_region_p (bb);
 756       const char *color;
 757       const char *style;
 758
 759       if (!some_p)
 760         continue;
 761
 762       if ((flags & SEL_DUMP_CFG_CURRENT_REGION)
 763           && in_current_region_p (bb)
 764           && BLOCK_TO_BB (bb->index) == 0)
 765         color = "color = green, ";
 766       else
 767         color = "";
 768
 769       if ((flags & SEL_DUMP_CFG_FENCES)
 770           && in_region_p)
 771         {
 772           style = "";
 773
 774           if (!sel_bb_empty_p (bb))
 775             {
 776               bool first_p = true;
 777               insn_t tail = BB_END (bb);
 778               insn_t cur_insn;
 779
 780               cur_insn = bb_note (bb);
 781
 782               do
 783                 {
 784                   fence_t fence;
 785
 786                   cur_insn = NEXT_INSN (cur_insn);
 787                   fence = flist_lookup (fences, cur_insn);
 788
 789                   if (fence != NULL)
 790                     {
 791                       if (!FENCE_SCHEDULED_P (fence))
 792                         {
 793                           if (first_p)
 794                             color = "color = red, ";
 795                           else
 796                             color = "color = yellow, ";
 797                         }
 798                       else
 799                         color = "color = blue, ";
 800                     }
 801
 802                   first_p = false;
 803                 }
 804               while (cur_insn != tail);
 805             }
 806         }
 807       else if (!full_p)
 808         style = "style = dashed, ";
 809       else
 810         style = "";
 811
 812       fprintf (f, "\tbb%d [%s%slabel = \"{Basic block %d", bb->index,
 813                style, color, bb->index);
 814
 815       if ((flags & SEL_DUMP_CFG_BB_LOOP)
 816           && bb->loop_father != NULL)
 817         fprintf (f, ", loop %d", bb->loop_father->num);
 818
 819       if (full_p
 820           && (flags & SEL_DUMP_CFG_BB_NOTES_LIST))
 821         {
 822           insn_t notes = BB_NOTE_LIST (bb);
 823
 824           if (notes != NULL_RTX)
 825             {
 826               fprintf (f, "|");
 827
 828               /* For simplicity, we dump notes from note_list in reversed order
 829                  to that what they will appear in the code.  */
 830               while (notes != NULL_RTX)
 831                 {
 832                   sel_dump_cfg_insn (notes, flags);
 833                   fprintf (f, "\\l");
 834
 835                   notes = PREV_INSN (notes);
 836                 }
 837             }
 838         }
 839
 840       if (full_p
 841           && (flags & SEL_DUMP_CFG_AV_SET)
 842           && in_current_region_p (bb)
 843           && !sel_bb_empty_p (bb))
 844         {
 845           fprintf (f, "|");
 846
 847           if (BB_AV_SET_VALID_P (bb))
 848             dump_av_set (BB_AV_SET (bb));
 849           else if (BB_AV_LEVEL (bb) == -1)
 850             fprintf (f, "AV_SET needs update");
 851         }
 852
 853       if ((flags & SEL_DUMP_CFG_LV_SET)
 854           && !sel_bb_empty_p (bb))
 855         {
 856           fprintf (f, "|");
 857
 858           if (BB_LV_SET_VALID_P (bb))
 859             dump_lv_set (BB_LV_SET (bb));
 860           else
 861             fprintf (f, "LV_SET needs update");
 862         }
 863
 864       if (full_p
 865           && (flags & SEL_DUMP_CFG_BB_INSNS))
 866         {
 867           fprintf (f, "|");
 868           while (insn != next_tail)
 869             {
 870               sel_dump_cfg_insn (insn, flags);
 871               fprintf (f, "\\l");
 872
 873               insn = NEXT_INSN (insn);
 874             }
 875         }
 876
 877       fprintf (f, "}\"];\n");
 878
 879       FOR_EACH_EDGE (e, ei, bb->succs)
 880         if (full_p || in_current_region_p (e->dest))
 881           sel_dump_cfg_edge (f, e);
 882     }
 883
 884   fprintf (f, "}");
 885
 886   restore_dump ();
 887   sched_dump_to_dot_p = false;
 888 }
 889
 890 /* Dump a cfg region to the file specified by TAG honoring flags.
 891    The file is created by the function.  */
 892 static void
 893 sel_dump_cfg_1 (const char *tag, int flags)
 894 {
 895   char *buf;
 896   int i;
 897   FILE *f;
 898
 899   ++sel_dump_cfg_fileno;
 900
 901   if (!sel_dump_cfg_p)
 902     return;
 903
 904   i = 1 + snprintf (NULL, 0, "%s/%s%05d-%s.dot", sel_debug_cfg_root,
 905                     sel_debug_cfg_root_postfix, sel_dump_cfg_fileno, tag);
 906   buf = XNEWVEC (char, i);
 907   snprintf (buf, i, "%s/%s%05d-%s.dot", sel_debug_cfg_root,
 908             sel_debug_cfg_root_postfix, sel_dump_cfg_fileno, tag);
 909
 910   f = fopen (buf, "w");
 911
 912   if (f == NULL)
 913     fprintf (stderr, "Can't create file: %s.\n", buf);
 914   else
 915     {
 916       sel_dump_cfg_2 (f, flags);
 917
 918       fclose (f);
 919     }
 920
 921   free (buf);
 922 }
 923
 924 /* Setup cfg dumping flags.  Used for debugging.  */
 925 void
 926 setup_dump_cfg_params (void)
 927 {
 928   sel_dump_cfg_flags = SEL_DUMP_CFG_FLAGS;
 929   sel_dump_cfg_p = 0;
 930   sel_debug_cfg_root_postfix = sel_debug_cfg_root_postfix_default;
 931 }
 932
 933 /* Debug a cfg region with FLAGS.  */
 934 void
 935 sel_debug_cfg_1 (int flags)
 936 {
 937   bool t1 = sel_dump_cfg_p;
 938   int t2 = sel_dump_cfg_fileno;
 939
 940   sel_dump_cfg_p = true;
 941   sel_dump_cfg_fileno = ++sel_debug_cfg_fileno;
 942
 943   sel_dump_cfg_1 ("sel-debug-cfg", flags);
 944
 945   sel_dump_cfg_fileno = t2;
 946   sel_dump_cfg_p = t1;
 947 }
 948 \f
 949 /* Dumps av_set AV to stderr.  */
 950 DEBUG_FUNCTION void
 951 debug_av_set (av_set_t av)
 952 {
 953   switch_dump (stderr);
 954   dump_av_set (av);
 955   sel_print ("\n");
 956   restore_dump ();
 957 }
 958
 959 /* Dump LV to stderr.  */
 960 DEBUG_FUNCTION void
 961 debug_lv_set (regset lv)
 962 {
 963   switch_dump (stderr);
 964   dump_lv_set (lv);
 965   sel_print ("\n");
 966   restore_dump ();
 967 }
 968
 969 /* Dump an instruction list P to stderr.  */
 970 DEBUG_FUNCTION void
 971 debug_ilist (ilist_t p)
 972 {
 973   switch_dump (stderr);
 974   dump_ilist (p);
 975   sel_print ("\n");
 976   restore_dump ();
 977 }
 978
 979 /* Dump a boundary list BNDS to stderr.  */
 980 DEBUG_FUNCTION void
 981 debug_blist (blist_t bnds)
 982 {
 983   switch_dump (stderr);
 984   dump_blist (bnds);
 985   sel_print ("\n");
 986   restore_dump ();
 987 }
 988
 989 /* Debug a cfg region with default flags.  */
 990 void
 991 sel_debug_cfg (void)
 992 {
 993   sel_debug_cfg_1 (sel_debug_cfg_flags);
 994 }
 995
 996 /* Print a current cselib value for X's address to stderr.  */
 997 DEBUG_FUNCTION rtx
 998 debug_mem_addr_value (rtx x)
 999 {
1000   rtx t, addr;
1001   machine_mode address_mode;
1002
1003   gcc_assert (MEM_P (x));
1004   address_mode = get_address_mode (x);
1005
1006   t = shallow_copy_rtx (x);
1007   if (cselib_lookup (XEXP (t, 0), address_mode, 0, GET_MODE (t)))
1008     XEXP (t, 0) = cselib_subst_to_values (XEXP (t, 0), GET_MODE (t));
1009
1010   t = canon_rtx (t);
1011   addr = get_addr (XEXP (t, 0));
1012   debug_rtx (t);
1013   debug_rtx (addr);
1014   return t;
1015 }
1016 #endif
1017