gcc/sel-sched-dump.c

   1 /* Instruction scheduling pass.   Log dumping infrastructure.
   2    Copyright (C) 2006-2015 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 "tm.h"
  24 #include "diagnostic-core.h"
  25 #include "rtl.h"
  26 #include "tm_p.h"
  27 #include "hard-reg-set.h"
  28 #include "regs.h"
  29 #include "input.h"
  30 #include "function.h"
  31 #include "predict.h"
  32 #include "dominance.h"
  33 #include "cfg.h"
  34 #include "basic-block.h"
  35 #include "flags.h"
  36 #include "insn-config.h"
  37 #include "insn-attr.h"
  38 #include "params.h"
  39 #include "alloc-pool.h"
  40 #include "cselib.h"
  41 #include "target.h"
  42
  43 #ifdef INSN_SCHEDULING
  44 #include "sel-sched-ir.h"
  45 #include "sel-sched-dump.h"
  46 \f
  47
  48 /* These variables control high-level pretty printing.  */
  49 static int sel_dump_cfg_flags = SEL_DUMP_CFG_FLAGS;
  50 static int sel_debug_cfg_flags = SEL_DUMP_CFG_FLAGS;
  51
  52 /* True when a cfg should be dumped.  */
  53 static bool sel_dump_cfg_p;
  54
  55 /* Variables that are used to build the cfg dump file name.  */
  56 static const char * const sel_debug_cfg_root = "./";
  57 static const char * const sel_debug_cfg_root_postfix_default = "";
  58 static const char *sel_debug_cfg_root_postfix = "";
  59 static int sel_dump_cfg_fileno = -1;
  60 static int sel_debug_cfg_fileno = -1;
  61
  62 /* When this flag is on, we are dumping to the .dot file.
  63    When it is off, we are dumping to log.
  64    This is useful to differentiate formatting between log and .dot
  65    files.  */
  66 bool sched_dump_to_dot_p = false;
  67
  68 /* Controls how insns from a fence list should be dumped.  */
  69 static int dump_flist_insn_flags = (DUMP_INSN_UID | DUMP_INSN_BBN
  70                                     | DUMP_INSN_SEQNO);
  71 \f
  72
  73 /* The variable used to hold the value of sched_dump when temporarily
  74    switching dump output to the other source, e.g. the .dot file.  */
  75 static FILE *saved_sched_dump = NULL;
  76
  77 /* Switch sched_dump to TO.  It must not be called twice.  */
  78 static void
  79 switch_dump (FILE *to)
  80 {
  81   gcc_assert (saved_sched_dump == NULL);
  82
  83   saved_sched_dump = sched_dump;
  84   sched_dump = to;
  85 }
  86
  87 /* Restore previously switched dump.  */
  88 static void
  89 restore_dump (void)
  90 {
  91   sched_dump = saved_sched_dump;
  92   saved_sched_dump = NULL;
  93 }
  94 \f
  95
  96 /* Functions for dumping instructions, av sets, and exprs.  */
  97
  98 /* Default flags for dumping insns.  */
  99 static int dump_insn_rtx_flags = DUMP_INSN_RTX_UID | DUMP_INSN_RTX_PATTERN;
 100
 101 /* Default flags for dumping vinsns.  */
 102 static int dump_vinsn_flags = (DUMP_VINSN_INSN_RTX | DUMP_VINSN_TYPE
 103                                | DUMP_VINSN_COUNT);
 104
 105 /* Default flags for dumping expressions.  */
 106 static int dump_expr_flags = DUMP_EXPR_ALL;
 107
 108 /* Default flags for dumping insns when debugging.  */
 109 static int debug_insn_rtx_flags = DUMP_INSN_RTX_ALL;
 110
 111 /* Default flags for dumping vinsns when debugging.  */
 112 static int debug_vinsn_flags = DUMP_VINSN_ALL;
 113
 114 /* Default flags for dumping expressions when debugging.  */
 115 static int debug_expr_flags = DUMP_EXPR_ALL;
 116
 117 /* Controls how an insn from stream should be dumped when debugging.  */
 118 static int debug_insn_flags = DUMP_INSN_ALL;
 119
 120 /* Print an rtx X.  */
 121 void
 122 sel_print_rtl (rtx x)
 123 {
 124   print_rtl_single (sched_dump, x);
 125 }
 126
 127 /* Dump insn INSN honoring FLAGS.  */
 128 void
 129 dump_insn_rtx_1 (rtx insn, int flags)
 130 {
 131   int all;
 132
 133   /* flags == -1 also means dumping all.  */
 134   all = (flags & 1);;
 135   if (all)
 136     flags |= DUMP_INSN_RTX_ALL;
 137
 138   sel_print ("(");
 139
 140   if (flags & DUMP_INSN_RTX_UID)
 141     sel_print ("%d;", INSN_UID (insn));
 142
 143   if (flags & DUMP_INSN_RTX_PATTERN)
 144     sel_print ("%s;", str_pattern_slim (PATTERN (insn)));
 145
 146   if (flags & DUMP_INSN_RTX_BBN)
 147     {
 148       basic_block bb = BLOCK_FOR_INSN (insn);
 149
 150       sel_print ("bb:%d;", bb != NULL ? bb->index : -1);
 151     }
 152
 153   sel_print (")");
 154 }
 155
 156
 157 /* Dump INSN with default flags.  */
 158 void
 159 dump_insn_rtx (rtx insn)
 160 {
 161   dump_insn_rtx_1 (insn, dump_insn_rtx_flags);
 162 }
 163
 164
 165 /* Dump INSN to stderr.  */
 166 DEBUG_FUNCTION void
 167 debug_insn_rtx (rtx insn)
 168 {
 169   switch_dump (stderr);
 170   dump_insn_rtx_1 (insn, debug_insn_rtx_flags);
 171   sel_print ("\n");
 172   restore_dump ();
 173 }
 174
 175 /* Dump vinsn VI honoring flags.  */
 176 void
 177 dump_vinsn_1 (vinsn_t vi, int flags)
 178 {
 179   int all;
 180
 181   /* flags == -1 also means dumping all.  */
 182   all = flags & 1;
 183   if (all)
 184     flags |= DUMP_VINSN_ALL;
 185
 186   sel_print ("(");
 187
 188   if (flags & DUMP_VINSN_INSN_RTX)
 189     dump_insn_rtx_1 (VINSN_INSN_RTX (vi), dump_insn_rtx_flags | all);
 190
 191   if (flags & DUMP_VINSN_TYPE)
 192     sel_print ("type:%s;", GET_RTX_NAME (VINSN_TYPE (vi)));
 193
 194   if (flags & DUMP_VINSN_COUNT)
 195     sel_print ("count:%d;", VINSN_COUNT (vi));
 196
 197   if (flags & DUMP_VINSN_COST)
 198     {
 199       int cost = vi->cost;
 200
 201       if (cost != -1)
 202         sel_print ("cost:%d;", cost);
 203     }
 204
 205   sel_print (")");
 206 }
 207
 208 /* Dump vinsn VI with default flags.  */
 209 void
 210 dump_vinsn (vinsn_t vi)
 211 {
 212   dump_vinsn_1 (vi, dump_vinsn_flags);
 213 }
 214
 215 DEBUG_FUNCTION void
 216 debug (vinsn_def &ref)
 217 {
 218   switch_dump (stderr);
 219   dump_vinsn_1 (&ref, dump_vinsn_flags);
 220   sel_print ("\n");
 221   restore_dump ();
 222 }
 223
 224 DEBUG_FUNCTION void
 225 debug (vinsn_def *ptr)
 226 {
 227   if (ptr)
 228     debug (*ptr);
 229   else
 230     fprintf (stderr, "<nil>\n");
 231 }
 232
 233 DEBUG_FUNCTION void
 234 debug_verbose (vinsn_def &ref)
 235 {
 236   switch_dump (stderr);
 237   dump_vinsn_1 (&ref, debug_vinsn_flags);
 238   sel_print ("\n");
 239   restore_dump ();
 240 }
 241
 242 DEBUG_FUNCTION void
 243 debug_verbose (vinsn_def *ptr)
 244 {
 245   if (ptr)
 246     debug (*ptr);
 247   else
 248     fprintf (stderr, "<nil>\n");
 249 }
 250
 251 /* Dump vinsn VI to stderr.  */
 252 DEBUG_FUNCTION void
 253 debug_vinsn (vinsn_t vi)
 254 {
 255   switch_dump (stderr);
 256   dump_vinsn_1 (vi, debug_vinsn_flags);
 257   sel_print ("\n");
 258   restore_dump ();
 259 }
 260
 261 /* Dump EXPR honoring flags.  */
 262 void
 263 dump_expr_1 (expr_t expr, int flags)
 264 {
 265   int all;
 266
 267   /* flags == -1 also means dumping all.  */
 268   all = flags & 1;
 269   if (all)
 270     flags |= DUMP_EXPR_ALL;
 271
 272   sel_print ("[");
 273
 274   if (flags & DUMP_EXPR_VINSN)
 275     dump_vinsn_1 (EXPR_VINSN (expr), dump_vinsn_flags | all);
 276
 277   if (flags & DUMP_EXPR_SPEC)
 278     {
 279       int spec = EXPR_SPEC (expr);
 280
 281       if (spec != 0)
 282         sel_print ("spec:%d;", spec);
 283     }
 284
 285   if (flags & DUMP_EXPR_USEFULNESS)
 286     {
 287       int use = EXPR_USEFULNESS (expr);
 288
 289       if (use != REG_BR_PROB_BASE)
 290         sel_print ("use:%d;", use);
 291     }
 292
 293   if (flags & DUMP_EXPR_PRIORITY)
 294     sel_print ("prio:%d;", EXPR_PRIORITY (expr));
 295
 296   if (flags & DUMP_EXPR_SCHED_TIMES)
 297     {
 298       int times = EXPR_SCHED_TIMES (expr);
 299
 300       if (times != 0)
 301         sel_print ("times:%d;", times);
 302     }
 303
 304   if (flags & DUMP_EXPR_SPEC_DONE_DS)
 305     {
 306       ds_t spec_done_ds = EXPR_SPEC_DONE_DS (expr);
 307
 308       if (spec_done_ds != 0)
 309         sel_print ("ds:%d;", spec_done_ds);
 310     }
 311
 312   if (flags & DUMP_EXPR_ORIG_BB)
 313     {
 314       int orig_bb = EXPR_ORIG_BB_INDEX (expr);
 315
 316       if (orig_bb != 0)
 317         sel_print ("orig_bb:%d;", orig_bb);
 318     }
 319
 320   if (EXPR_TARGET_AVAILABLE (expr) < 1)
 321     sel_print ("target:%d;", EXPR_TARGET_AVAILABLE (expr));
 322   sel_print ("]");
 323 }
 324
 325 /* Dump expression EXPR with default flags.  */
 326 void
 327 dump_expr (expr_t expr)
 328 {
 329   dump_expr_1 (expr, dump_expr_flags);
 330 }
 331
 332 /* Dump expression EXPR to stderr.  */
 333 DEBUG_FUNCTION void
 334 debug_expr (expr_t expr)
 335 {
 336   switch_dump (stderr);
 337   dump_expr_1 (expr, debug_expr_flags);
 338   sel_print ("\n");
 339   restore_dump ();
 340 }
 341
 342 /* Dump expression REF.  */
 343
 344 DEBUG_FUNCTION void
 345 debug (expr_def &ref)
 346 {
 347   switch_dump (stderr);
 348   dump_expr_1 (&ref, 0);
 349   sel_print ("\n");
 350   restore_dump ();
 351 }
 352
 353 DEBUG_FUNCTION void
 354 debug (expr_def *ptr)
 355 {
 356   if (ptr)
 357     debug (*ptr);
 358   else
 359     fprintf (stderr, "<nil>\n");
 360 }
 361
 362 /* Dump expression REF verbosely.  */
 363
 364 DEBUG_FUNCTION void
 365 debug_verbose (expr_def &ref)
 366 {
 367   switch_dump (stderr);
 368   dump_expr_1 (&ref, DUMP_EXPR_ALL);
 369   sel_print ("\n");
 370   restore_dump ();
 371 }
 372
 373 DEBUG_FUNCTION void
 374 debug_verbose (expr_def *ptr)
 375 {
 376   if (ptr)
 377     debug_verbose (*ptr);
 378   else
 379     fprintf (stderr, "<nil>\n");
 380 }
 381
 382 /* Dump insn I honoring FLAGS.  */
 383 void
 384 dump_insn_1 (insn_t i, int flags)
 385 {
 386   int all;
 387
 388   all = flags & 1;
 389   if (all)
 390     flags |= DUMP_INSN_ALL;
 391
 392   if (!sched_dump_to_dot_p)
 393     sel_print ("(");
 394
 395   if (flags & DUMP_INSN_EXPR)
 396     {
 397       dump_expr_1 (INSN_EXPR (i), dump_expr_flags | all);
 398       sel_print (";");
 399     }
 400   else if (flags & DUMP_INSN_PATTERN)
 401     {
 402       dump_insn_rtx_1 (i, DUMP_INSN_RTX_PATTERN | all);
 403       sel_print (";");
 404     }
 405   else if (flags & DUMP_INSN_UID)
 406     sel_print ("uid:%d;", INSN_UID (i));
 407
 408   if (flags & DUMP_INSN_SEQNO)
 409     sel_print ("seqno:%d;", INSN_SEQNO (i));
 410
 411   if (flags & DUMP_INSN_SCHED_CYCLE)
 412     {
 413       int cycle = INSN_SCHED_CYCLE (i);
 414
 415       if (cycle != 0)
 416         sel_print ("cycle:%d;", cycle);
 417     }
 418
 419   if (!sched_dump_to_dot_p)
 420     sel_print (")");
 421 }
 422
 423 /* Dump insn I with default flags.  */
 424 void
 425 dump_insn (insn_t i)
 426 {
 427   dump_insn_1 (i, DUMP_INSN_EXPR | DUMP_INSN_SCHED_CYCLE);
 428 }
 429
 430 /* Dump INSN to stderr.  */
 431 DEBUG_FUNCTION void
 432 debug_insn (insn_t insn)
 433 {
 434   switch_dump (stderr);
 435   dump_insn_1 (insn, debug_insn_flags);
 436   sel_print ("\n");
 437   restore_dump ();
 438 }
 439
 440 /* Dumps av_set AV.  */
 441 void
 442 dump_av_set (av_set_t av)
 443 {
 444   av_set_iterator i;
 445   expr_t expr;
 446
 447   if (!sched_dump_to_dot_p)
 448     sel_print ("{");
 449
 450   FOR_EACH_EXPR (expr, i, av)
 451     {
 452       dump_expr (expr);
 453       if (!sched_dump_to_dot_p)
 454         sel_print (" ");
 455       else
 456         sel_print ("\n");
 457     }
 458
 459   if (!sched_dump_to_dot_p)
 460     sel_print ("}");
 461 }
 462
 463 /* Dumps lvset LV.  */
 464 void
 465 dump_lv_set (regset lv)
 466 {
 467   sel_print ("{");
 468
 469   /* This code was adapted from cfg.c: dump_regset ().  */
 470   if (lv == NULL)
 471     sel_print ("nil");
 472   else
 473     {
 474       unsigned i;
 475       reg_set_iterator rsi;
 476       int count = 0;
 477
 478       EXECUTE_IF_SET_IN_REG_SET (lv, 0, i, rsi)
 479         {
 480           sel_print (" %d", i);
 481           if (i < FIRST_PSEUDO_REGISTER)
 482             {
 483               sel_print (" [%s]", reg_names[i]);
 484               ++count;
 485             }
 486
 487           ++count;
 488
 489           if (sched_dump_to_dot_p && count == 12)
 490             {
 491               count = 0;
 492               sel_print ("\n");
 493             }
 494         }
 495     }
 496
 497   sel_print ("}\n");
 498 }
 499
 500 /* Dumps a list of instructions pointed to by P.  */
 501 static void
 502 dump_ilist (ilist_t p)
 503 {
 504   while (p)
 505     {
 506       dump_insn (ILIST_INSN (p));
 507       p = ILIST_NEXT (p);
 508     }
 509 }
 510
 511 /* Dumps a list of boundaries pointed to by BNDS.  */
 512 void
 513 dump_blist (blist_t bnds)
 514 {
 515   for (; bnds; bnds = BLIST_NEXT (bnds))
 516     {
 517       bnd_t bnd = BLIST_BND (bnds);
 518
 519       sel_print ("[to: %d; ptr: ", INSN_UID (BND_TO (bnd)));
 520       dump_ilist (BND_PTR (bnd));
 521       sel_print ("] ");
 522     }
 523 }
 524
 525 /* Dumps a list of fences pointed to by L.  */
 526 void
 527 dump_flist (flist_t l)
 528 {
 529   while (l)
 530     {
 531       dump_insn_1 (FENCE_INSN (FLIST_FENCE (l)), dump_flist_insn_flags);
 532       sel_print (" ");
 533       l = FLIST_NEXT (l);
 534     }
 535 }
 536
 537 /* Dumps an insn vector SUCCS.  */
 538 void
 539 dump_insn_vector (rtx_vec_t succs)
 540 {
 541   int i;
 542   rtx_insn *succ;
 543
 544   FOR_EACH_VEC_ELT (succs, i, succ)
 545     if (succ)
 546       dump_insn (succ);
 547     else
 548       sel_print ("NULL ");
 549 }
 550
 551 /* Dumps a hard reg set SET to FILE using PREFIX.  */
 552 static void
 553 print_hard_reg_set (FILE *file, const char *prefix, HARD_REG_SET set)
 554 {
 555   int i;
 556
 557   fprintf (file, "%s{ ", prefix);
 558   for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
 559     {
 560       if (TEST_HARD_REG_BIT (set, i))
 561         fprintf (file, "%d ", i);
 562     }
 563   fprintf (file, "}\n");
 564 }
 565
 566 /* Dumps a hard reg set SET using PREFIX.  */
 567 void
 568 dump_hard_reg_set (const char *prefix, HARD_REG_SET set)
 569 {
 570   print_hard_reg_set (sched_dump, prefix, set);
 571 }
 572
 573 /* Pretty print INSN.  This is used as a hook.  */
 574 const char *
 575 sel_print_insn (const rtx_insn *insn, int aligned ATTRIBUTE_UNUSED)
 576 {
 577   static char buf[80];
 578
 579   /* '+' before insn means it is a new cycle start and it's not been
 580      scheduled yet.  '>' - has been scheduled.  */
 581   if (s_i_d.exists () && INSN_LUID (insn) > 0)
 582     if (GET_MODE (insn) == TImode)
 583       sprintf (buf, "%s %4d",
 584                INSN_SCHED_TIMES (insn) > 0 ? "> " : "< ",
 585                INSN_UID (insn));
 586     else
 587       sprintf (buf, "%s %4d",
 588                INSN_SCHED_TIMES (insn) > 0 ? "! " : "  ",
 589                INSN_UID (insn));
 590   else
 591     if (GET_MODE (insn) == TImode)
 592       sprintf (buf, "+ %4d", INSN_UID (insn));
 593     else
 594       sprintf (buf, "  %4d", INSN_UID (insn));
 595
 596   return buf;
 597 }
 598 \f
 599
 600 /* Functions for pretty printing of CFG.  */
 601 /* FIXME: Using pretty-print here could simplify this stuff.  */
 602
 603 /* Replace all occurencies of STR1 to STR2 in BUF.
 604    The BUF must be large enough to hold the result.  */
 605 static void
 606 replace_str_in_buf (char *buf, const char *str1, const char *str2)
 607 {
 608   int buf_len = strlen (buf);
 609   int str1_len = strlen (str1);
 610   int str2_len = strlen (str2);
 611   int diff = str2_len - str1_len;
 612
 613   char *p = buf;
 614   do
 615     {
 616       p = strstr (p, str1);
 617       if (p)
 618         {
 619           char *p1 = p + str1_len;
 620           /* Copy the rest of buf and '\0'.  */
 621           int n = buf + buf_len - p1;
 622           int i;
 623
 624           /* Shift str by DIFF chars.  */
 625           if (diff > 0)
 626             for (i = n; i >= 0; i--)
 627               p1[i + diff] = p1[i];
 628           else
 629             for (i = 0; i <= n; i++)
 630               p1[i + diff] = p1[i];
 631
 632           /* Copy str2.  */
 633           for (i = 0; i < str2_len; i++)
 634             p[i] = str2[i];
 635
 636           p += str2_len;
 637           buf_len += diff;
 638         }
 639
 640     }
 641   while (p);
 642 }
 643
 644 /* Replace characters in BUF that have special meaning in .dot file.
 645    Similar to pp_write_text_as_dot_label_to_stream.  */
 646 static void
 647 sel_prepare_string_for_dot_label (char *buf)
 648 {
 649   static char specials_from[7][2] = { "<", ">", "{", "|", "}", "\"",
 650                                       "\n" };
 651   static char specials_to[7][3] = { "\\<", "\\>", "\\{", "\\|", "\\}",
 652                                     "\\\"", "\\l" };
 653   unsigned i;
 654
 655   for (i = 0; i < 7; i++)
 656     replace_str_in_buf (buf, specials_from[i], specials_to[i]);
 657 }
 658
 659 /* This function acts like printf but dumps to the sched_dump file.  */
 660 void
 661 sel_print (const char *fmt, ...)
 662 {
 663   va_list ap;
 664   va_start (ap, fmt);
 665   if (sched_dump_to_dot_p)
 666     {
 667       char *message;
 668       if (vasprintf (&message, fmt, ap) >= 0 && message != NULL)
 669         {
 670           message = (char *) xrealloc (message, 2 * strlen (message) + 1);
 671           sel_prepare_string_for_dot_label (message);
 672           fprintf (sched_dump, "%s", message);
 673           free (message);
 674         }
 675     }
 676   else
 677     vfprintf (sched_dump, fmt, ap);
 678   va_end (ap);
 679 }
 680
 681 /* Dump INSN with FLAGS.  */
 682 static void
 683 sel_dump_cfg_insn (insn_t insn, int flags)
 684 {
 685   int insn_flags = DUMP_INSN_UID | DUMP_INSN_PATTERN;
 686
 687   if (sched_luids.exists () && INSN_LUID (insn) > 0)
 688     {
 689       if (flags & SEL_DUMP_CFG_INSN_SEQNO)
 690         insn_flags |= DUMP_INSN_SEQNO | DUMP_INSN_SCHED_CYCLE | DUMP_INSN_EXPR;
 691     }
 692
 693   dump_insn_1 (insn, insn_flags);
 694 }
 695
 696 /* Dump E to the dot file F.  */
 697 static void
 698 sel_dump_cfg_edge (FILE *f, edge e)
 699 {
 700   int w;
 701   const char *color;
 702
 703   if (e->flags & EDGE_FALLTHRU)
 704     {
 705       w = 10;
 706       color = ", color = red";
 707     }
 708   else if (e->src->next_bb == e->dest)
 709     {
 710       w = 3;
 711       color = ", color = blue";
 712     }
 713   else
 714     {
 715       w = 1;
 716       color = "";
 717     }
 718
 719   fprintf (f, "\tbb%d -> bb%d [weight = %d%s];\n",
 720            e->src->index, e->dest->index, w, color);
 721 }
 722
 723
 724 /* Return true if BB has a predesessor from current region.
 725    TODO: Either make this function to trace back through empty block
 726    or just remove those empty blocks.  */
 727 static bool
 728 has_preds_in_current_region_p (basic_block bb)
 729 {
 730   edge e;
 731   edge_iterator ei;
 732
 733   gcc_assert (!in_current_region_p (bb));
 734
 735   FOR_EACH_EDGE (e, ei, bb->preds)
 736     if (in_current_region_p (e->src))
 737       return true;
 738
 739   return false;
 740 }
 741
 742 /* Dump a cfg region to the dot file F honoring FLAGS.  */
 743 static void
 744 sel_dump_cfg_2 (FILE *f, int flags)
 745 {
 746   basic_block bb;
 747
 748   sched_dump_to_dot_p = true;
 749   switch_dump (f);
 750
 751   fprintf (f, "digraph G {\n"
 752            "\tratio = 2.25;\n"
 753            "\tnode [shape = record, fontsize = 9];\n");
 754
 755   if (flags & SEL_DUMP_CFG_FUNCTION_NAME)
 756     fprintf (f, "function [label = \"%s\"];\n", current_function_name ());
 757
 758   FOR_EACH_BB_FN (bb, cfun)
 759     {
 760       insn_t insn = BB_HEAD (bb);
 761       insn_t next_tail = NEXT_INSN (BB_END (bb));
 762       edge e;
 763       edge_iterator ei;
 764       bool in_region_p = ((flags & SEL_DUMP_CFG_CURRENT_REGION)
 765                           && in_current_region_p (bb));
 766       bool full_p = (!(flags & SEL_DUMP_CFG_CURRENT_REGION)
 767                      || in_region_p);
 768       bool some_p = full_p || has_preds_in_current_region_p (bb);
 769       const char *color;
 770       const char *style;
 771
 772       if (!some_p)
 773         continue;
 774
 775       if ((flags & SEL_DUMP_CFG_CURRENT_REGION)
 776           && in_current_region_p (bb)
 777           && BLOCK_TO_BB (bb->index) == 0)
 778         color = "color = green, ";
 779       else
 780         color = "";
 781
 782       if ((flags & SEL_DUMP_CFG_FENCES)
 783           && in_region_p)
 784         {
 785           style = "";
 786
 787           if (!sel_bb_empty_p (bb))
 788             {
 789               bool first_p = true;
 790               insn_t tail = BB_END (bb);
 791               insn_t cur_insn;
 792
 793               cur_insn = bb_note (bb);
 794
 795               do
 796                 {
 797                   fence_t fence;
 798
 799                   cur_insn = NEXT_INSN (cur_insn);
 800                   fence = flist_lookup (fences, cur_insn);
 801
 802                   if (fence != NULL)
 803                     {
 804                       if (!FENCE_SCHEDULED_P (fence))
 805                         {
 806                           if (first_p)
 807                             color = "color = red, ";
 808                           else
 809                             color = "color = yellow, ";
 810                         }
 811                       else
 812                         color = "color = blue, ";
 813                     }
 814
 815                   first_p = false;
 816                 }
 817               while (cur_insn != tail);
 818             }
 819         }
 820       else if (!full_p)
 821         style = "style = dashed, ";
 822       else
 823         style = "";
 824
 825       fprintf (f, "\tbb%d [%s%slabel = \"{Basic block %d", bb->index,
 826                style, color, bb->index);
 827
 828       if ((flags & SEL_DUMP_CFG_BB_LOOP)
 829           && bb->loop_father != NULL)
 830         fprintf (f, ", loop %d", bb->loop_father->num);
 831
 832       if (full_p
 833           && (flags & SEL_DUMP_CFG_BB_NOTES_LIST))
 834         {
 835           insn_t notes = BB_NOTE_LIST (bb);
 836
 837           if (notes != NULL_RTX)
 838             {
 839               fprintf (f, "|");
 840
 841               /* For simplicity, we dump notes from note_list in reversed order
 842                  to that what they will appear in the code.  */
 843               while (notes != NULL_RTX)
 844                 {
 845                   sel_dump_cfg_insn (notes, flags);
 846                   fprintf (f, "\\l");
 847
 848                   notes = PREV_INSN (notes);
 849                 }
 850             }
 851         }
 852
 853       if (full_p
 854           && (flags & SEL_DUMP_CFG_AV_SET)
 855           && in_current_region_p (bb)
 856           && !sel_bb_empty_p (bb))
 857         {
 858           fprintf (f, "|");
 859
 860           if (BB_AV_SET_VALID_P (bb))
 861             dump_av_set (BB_AV_SET (bb));
 862           else if (BB_AV_LEVEL (bb) == -1)
 863             fprintf (f, "AV_SET needs update");
 864         }
 865
 866       if ((flags & SEL_DUMP_CFG_LV_SET)
 867           && !sel_bb_empty_p (bb))
 868         {
 869           fprintf (f, "|");
 870
 871           if (BB_LV_SET_VALID_P (bb))
 872             dump_lv_set (BB_LV_SET (bb));
 873           else
 874             fprintf (f, "LV_SET needs update");
 875         }
 876
 877       if (full_p
 878           && (flags & SEL_DUMP_CFG_BB_INSNS))
 879         {
 880           fprintf (f, "|");
 881           while (insn != next_tail)
 882             {
 883               sel_dump_cfg_insn (insn, flags);
 884               fprintf (f, "\\l");
 885
 886               insn = NEXT_INSN (insn);
 887             }
 888         }
 889
 890       fprintf (f, "}\"];\n");
 891
 892       FOR_EACH_EDGE (e, ei, bb->succs)
 893         if (full_p || in_current_region_p (e->dest))
 894           sel_dump_cfg_edge (f, e);
 895     }
 896
 897   fprintf (f, "}");
 898
 899   restore_dump ();
 900   sched_dump_to_dot_p = false;
 901 }
 902
 903 /* Dump a cfg region to the file specified by TAG honoring flags.
 904    The file is created by the function.  */
 905 static void
 906 sel_dump_cfg_1 (const char *tag, int flags)
 907 {
 908   char *buf;
 909   int i;
 910   FILE *f;
 911
 912   ++sel_dump_cfg_fileno;
 913
 914   if (!sel_dump_cfg_p)
 915     return;
 916
 917   i = 1 + snprintf (NULL, 0, "%s/%s%05d-%s.dot", sel_debug_cfg_root,
 918                     sel_debug_cfg_root_postfix, sel_dump_cfg_fileno, tag);
 919   buf = XNEWVEC (char, i);
 920   snprintf (buf, i, "%s/%s%05d-%s.dot", sel_debug_cfg_root,
 921             sel_debug_cfg_root_postfix, sel_dump_cfg_fileno, tag);
 922
 923   f = fopen (buf, "w");
 924
 925   if (f == NULL)
 926     fprintf (stderr, "Can't create file: %s.\n", buf);
 927   else
 928     {
 929       sel_dump_cfg_2 (f, flags);
 930
 931       fclose (f);
 932     }
 933
 934   free (buf);
 935 }
 936
 937 /* Setup cfg dumping flags.  Used for debugging.  */
 938 void
 939 setup_dump_cfg_params (void)
 940 {
 941   sel_dump_cfg_flags = SEL_DUMP_CFG_FLAGS;
 942   sel_dump_cfg_p = 0;
 943   sel_debug_cfg_root_postfix = sel_debug_cfg_root_postfix_default;
 944 }
 945
 946 /* Debug a cfg region with FLAGS.  */
 947 void
 948 sel_debug_cfg_1 (int flags)
 949 {
 950   bool t1 = sel_dump_cfg_p;
 951   int t2 = sel_dump_cfg_fileno;
 952
 953   sel_dump_cfg_p = true;
 954   sel_dump_cfg_fileno = ++sel_debug_cfg_fileno;
 955
 956   sel_dump_cfg_1 ("sel-debug-cfg", flags);
 957
 958   sel_dump_cfg_fileno = t2;
 959   sel_dump_cfg_p = t1;
 960 }
 961 \f
 962 /* Dumps av_set AV to stderr.  */
 963 DEBUG_FUNCTION void
 964 debug_av_set (av_set_t av)
 965 {
 966   switch_dump (stderr);
 967   dump_av_set (av);
 968   sel_print ("\n");
 969   restore_dump ();
 970 }
 971
 972 /* Dump LV to stderr.  */
 973 DEBUG_FUNCTION void
 974 debug_lv_set (regset lv)
 975 {
 976   switch_dump (stderr);
 977   dump_lv_set (lv);
 978   sel_print ("\n");
 979   restore_dump ();
 980 }
 981
 982 /* Dump an instruction list P to stderr.  */
 983 DEBUG_FUNCTION void
 984 debug_ilist (ilist_t p)
 985 {
 986   switch_dump (stderr);
 987   dump_ilist (p);
 988   sel_print ("\n");
 989   restore_dump ();
 990 }
 991
 992 /* Dump a boundary list BNDS to stderr.  */
 993 DEBUG_FUNCTION void
 994 debug_blist (blist_t bnds)
 995 {
 996   switch_dump (stderr);
 997   dump_blist (bnds);
 998   sel_print ("\n");
 999   restore_dump ();
1000 }
1001
1002 /* Dump a rtx vector REF.  */
1003 DEBUG_FUNCTION void
1004 debug (vec<rtx_insn *> &ref)
1005 {
1006   switch_dump (stderr);
1007   dump_insn_vector (ref);
1008   sel_print ("\n");
1009   restore_dump ();
1010 }
1011
1012 DEBUG_FUNCTION void
1013 debug (vec<rtx_insn *> *ptr)
1014 {
1015   if (ptr)
1016     debug (*ptr);
1017   else
1018     fprintf (stderr, "<nil>\n");
1019 }
1020
1021 /* Dump an insn vector SUCCS.  */
1022 DEBUG_FUNCTION void
1023 debug_insn_vector (rtx_vec_t succs)
1024 {
1025   switch_dump (stderr);
1026   dump_insn_vector (succs);
1027   sel_print ("\n");
1028   restore_dump ();
1029 }
1030
1031 /* Dump a hard reg set SET to stderr.  */
1032 DEBUG_FUNCTION void
1033 debug_hard_reg_set (HARD_REG_SET set)
1034 {
1035   switch_dump (stderr);
1036   dump_hard_reg_set ("", set);
1037   sel_print ("\n");
1038   restore_dump ();
1039 }
1040
1041 /* Debug a cfg region with default flags.  */
1042 void
1043 sel_debug_cfg (void)
1044 {
1045   sel_debug_cfg_1 (sel_debug_cfg_flags);
1046 }
1047
1048 /* Print a current cselib value for X's address to stderr.  */
1049 DEBUG_FUNCTION rtx
1050 debug_mem_addr_value (rtx x)
1051 {
1052   rtx t, addr;
1053   machine_mode address_mode;
1054
1055   gcc_assert (MEM_P (x));
1056   address_mode = get_address_mode (x);
1057
1058   t = shallow_copy_rtx (x);
1059   if (cselib_lookup (XEXP (t, 0), address_mode, 0, GET_MODE (t)))
1060     XEXP (t, 0) = cselib_subst_to_values (XEXP (t, 0), GET_MODE (t));
1061
1062   t = canon_rtx (t);
1063   addr = get_addr (XEXP (t, 0));
1064   debug_rtx (t);
1065   debug_rtx (addr);
1066   return t;
1067 }
1068 #endif
1069