gcc/print-rtl.c

   1 /* Print RTL for GCC.
   2    Copyright (C) 1987, 1988, 1992, 1997, 1998, 1999, 2000, 2002, 2003,
   3    2004, 2005, 2007, 2008, 2009, 2010, 2011
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 /* This file is compiled twice: once for the generator programs,
  23    once for the compiler.  */
  24 #ifdef GENERATOR_FILE
  25 #include "bconfig.h"
  26 #else
  27 #include "config.h"
  28 #endif
  29
  30 #include "system.h"
  31 #include "coretypes.h"
  32 #include "tm.h"
  33 #include "rtl.h"
  34
  35 /* These headers all define things which are not available in
  36    generator programs.  */
  37 #ifndef GENERATOR_FILE
  38 #include "tree.h"
  39 #include "flags.h"
  40 #include "hard-reg-set.h"
  41 #include "basic-block.h"
  42 #include "diagnostic.h"
  43 #include "tree-pretty-print.h"
  44 #include "cselib.h"
  45 #include "tree-pass.h"
  46 #endif
  47
  48 static FILE *outfile;
  49
  50 static int sawclose = 0;
  51
  52 static int indent;
  53
  54 static void print_rtx (const_rtx);
  55
  56 /* String printed at beginning of each RTL when it is dumped.
  57    This string is set to ASM_COMMENT_START when the RTL is dumped in
  58    the assembly output file.  */
  59 const char *print_rtx_head = "";
  60
  61 #ifdef GENERATOR_FILE
  62 /* These are defined from the .opt file when not used in generator
  63    programs.  */
  64
  65 /* Nonzero means suppress output of instruction numbers
  66    in debugging dumps.
  67    This must be defined here so that programs like gencodes can be linked.  */
  68 int flag_dump_unnumbered = 0;
  69
  70 /* Nonzero means suppress output of instruction numbers for previous
  71    and next insns in debugging dumps.
  72    This must be defined here so that programs like gencodes can be linked.  */
  73 int flag_dump_unnumbered_links = 0;
  74 #endif
  75
  76 /* Nonzero means use simplified format without flags, modes, etc.  */
  77 int flag_simple = 0;
  78
  79 /* Nonzero if we are dumping graphical description.  */
  80 int dump_for_graph;
  81
  82 #ifndef GENERATOR_FILE
  83 void
  84 print_mem_expr (FILE *outfile, const_tree expr)
  85 {
  86   fputc (' ', outfile);
  87   print_generic_expr (outfile, CONST_CAST_TREE (expr), dump_flags);
  88 }
  89 #endif
  90
  91 /* Print IN_RTX onto OUTFILE.  This is the recursive part of printing.  */
  92
  93 static void
  94 print_rtx (const_rtx in_rtx)
  95 {
  96   int i = 0;
  97   int j;
  98   const char *format_ptr;
  99   int is_insn;
 100
 101   if (sawclose)
 102     {
 103       if (flag_simple)
 104         fputc (' ', outfile);
 105       else
 106         fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 107       sawclose = 0;
 108     }
 109
 110   if (in_rtx == 0)
 111     {
 112       fputs ("(nil)", outfile);
 113       sawclose = 1;
 114       return;
 115     }
 116   else if (GET_CODE (in_rtx) > NUM_RTX_CODE)
 117     {
 118        fprintf (outfile, "(??? bad code %d\n%s%*s)", GET_CODE (in_rtx),
 119                 print_rtx_head, indent * 2, "");
 120        sawclose = 1;
 121        return;
 122     }
 123
 124   is_insn = INSN_P (in_rtx);
 125
 126   /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
 127      in separate nodes and therefore have to handle them special here.  */
 128   if (dump_for_graph
 129       && (is_insn || NOTE_P (in_rtx)
 130           || LABEL_P (in_rtx) || BARRIER_P (in_rtx)))
 131     {
 132       i = 3;
 133       indent = 0;
 134     }
 135   else
 136     {
 137       /* Print name of expression code.  */
 138       if (flag_simple && CONST_INT_P (in_rtx))
 139         fputc ('(', outfile);
 140       else
 141         fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
 142
 143       if (! flag_simple)
 144         {
 145           if (RTX_FLAG (in_rtx, in_struct))
 146             fputs ("/s", outfile);
 147
 148           if (RTX_FLAG (in_rtx, volatil))
 149             fputs ("/v", outfile);
 150
 151           if (RTX_FLAG (in_rtx, unchanging))
 152             fputs ("/u", outfile);
 153
 154           if (RTX_FLAG (in_rtx, frame_related))
 155             fputs ("/f", outfile);
 156
 157           if (RTX_FLAG (in_rtx, jump))
 158             fputs ("/j", outfile);
 159
 160           if (RTX_FLAG (in_rtx, call))
 161             fputs ("/c", outfile);
 162
 163           if (RTX_FLAG (in_rtx, return_val))
 164             fputs ("/i", outfile);
 165
 166           /* Print REG_NOTE names for EXPR_LIST and INSN_LIST.  */
 167           if ((GET_CODE (in_rtx) == EXPR_LIST
 168                || GET_CODE (in_rtx) == INSN_LIST)
 169               && (int)GET_MODE (in_rtx) < REG_NOTE_MAX)
 170             fprintf (outfile, ":%s",
 171                      GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
 172
 173           /* For other rtl, print the mode if it's not VOID.  */
 174           else if (GET_MODE (in_rtx) != VOIDmode)
 175             fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
 176
 177 #ifndef GENERATOR_FILE
 178           if (GET_CODE (in_rtx) == VAR_LOCATION)
 179             {
 180               if (TREE_CODE (PAT_VAR_LOCATION_DECL (in_rtx)) == STRING_CST)
 181                 fputs (" <debug string placeholder>", outfile);
 182               else
 183                 print_mem_expr (outfile, PAT_VAR_LOCATION_DECL (in_rtx));
 184               fputc (' ', outfile);
 185               print_rtx (PAT_VAR_LOCATION_LOC (in_rtx));
 186               if (PAT_VAR_LOCATION_STATUS (in_rtx)
 187                   == VAR_INIT_STATUS_UNINITIALIZED)
 188                 fprintf (outfile, " [uninit]");
 189               sawclose = 1;
 190               i = GET_RTX_LENGTH (VAR_LOCATION);
 191             }
 192 #endif
 193         }
 194     }
 195
 196 #ifndef GENERATOR_FILE
 197   if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
 198     i = 5;
 199 #endif
 200
 201   /* Get the format string and skip the first elements if we have handled
 202      them already.  */
 203   format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
 204   for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
 205     switch (*format_ptr++)
 206       {
 207         const char *str;
 208
 209       case 'T':
 210         str = XTMPL (in_rtx, i);
 211         goto string;
 212
 213       case 'S':
 214       case 's':
 215         str = XSTR (in_rtx, i);
 216       string:
 217
 218         if (str == 0)
 219           fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
 220         else
 221           {
 222             if (dump_for_graph)
 223               fprintf (outfile, " (\\\"%s\\\")", str);
 224             else
 225               fprintf (outfile, " (\"%s\")", str);
 226           }
 227         sawclose = 1;
 228         break;
 229
 230         /* 0 indicates a field for internal use that should not be printed.
 231            An exception is the third field of a NOTE, where it indicates
 232            that the field has several different valid contents.  */
 233       case '0':
 234         if (i == 1 && REG_P (in_rtx))
 235           {
 236             if (REGNO (in_rtx) != ORIGINAL_REGNO (in_rtx))
 237               fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
 238           }
 239 #ifndef GENERATOR_FILE
 240         else if (i == 1 && GET_CODE (in_rtx) == SYMBOL_REF)
 241           {
 242             int flags = SYMBOL_REF_FLAGS (in_rtx);
 243             if (flags)
 244               fprintf (outfile, " [flags %#x]", flags);
 245           }
 246         else if (i == 2 && GET_CODE (in_rtx) == SYMBOL_REF)
 247           {
 248             tree decl = SYMBOL_REF_DECL (in_rtx);
 249             if (decl)
 250               print_node_brief (outfile, "", decl, dump_flags);
 251           }
 252 #endif
 253         else if (i == 4 && NOTE_P (in_rtx))
 254           {
 255             switch (NOTE_KIND (in_rtx))
 256               {
 257               case NOTE_INSN_EH_REGION_BEG:
 258               case NOTE_INSN_EH_REGION_END:
 259                 if (flag_dump_unnumbered)
 260                   fprintf (outfile, " #");
 261                 else
 262                   fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
 263                 sawclose = 1;
 264                 break;
 265
 266               case NOTE_INSN_BLOCK_BEG:
 267               case NOTE_INSN_BLOCK_END:
 268 #ifndef GENERATOR_FILE
 269                 dump_addr (outfile, " ", NOTE_BLOCK (in_rtx));
 270 #endif
 271                 sawclose = 1;
 272                 break;
 273
 274               case NOTE_INSN_BASIC_BLOCK:
 275                 {
 276 #ifndef GENERATOR_FILE
 277                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 278                   if (bb != 0)
 279                     fprintf (outfile, " [bb %d]", bb->index);
 280 #endif
 281                   break;
 282                 }
 283
 284               case NOTE_INSN_DELETED_LABEL:
 285                 {
 286                   const char *label = NOTE_DELETED_LABEL_NAME (in_rtx);
 287                   if (label)
 288                     fprintf (outfile, " (\"%s\")", label);
 289                   else
 290                     fprintf (outfile, " \"\"");
 291                 }
 292                 break;
 293
 294               case NOTE_INSN_SWITCH_TEXT_SECTIONS:
 295                 {
 296 #ifndef GENERATOR_FILE
 297                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 298                   if (bb != 0)
 299                     fprintf (outfile, " [bb %d]", bb->index);
 300 #endif
 301                   break;
 302                 }
 303
 304               case NOTE_INSN_VAR_LOCATION:
 305               case NOTE_INSN_CALL_ARG_LOCATION:
 306 #ifndef GENERATOR_FILE
 307                 fputc (' ', outfile);
 308                 print_rtx (NOTE_VAR_LOCATION (in_rtx));
 309 #endif
 310                 break;
 311
 312               default:
 313                 break;
 314               }
 315           }
 316         else if (i == 8 && JUMP_P (in_rtx) && JUMP_LABEL (in_rtx) != NULL)
 317           /* Output the JUMP_LABEL reference.  */
 318           fprintf (outfile, "\n%s%*s -> %d", print_rtx_head, indent * 2, "",
 319                    INSN_UID (JUMP_LABEL (in_rtx)));
 320         else if (i == 0 && GET_CODE (in_rtx) == VALUE)
 321           {
 322 #ifndef GENERATOR_FILE
 323             cselib_val *val = CSELIB_VAL_PTR (in_rtx);
 324
 325             fprintf (outfile, " %u:%u", val->uid, val->hash);
 326             dump_addr (outfile, " @", in_rtx);
 327             dump_addr (outfile, "/", (void*)val);
 328 #endif
 329           }
 330         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_EXPR)
 331           {
 332 #ifndef GENERATOR_FILE
 333             fprintf (outfile, " D#%i",
 334                      DEBUG_TEMP_UID (DEBUG_EXPR_TREE_DECL (in_rtx)));
 335 #endif
 336           }
 337         else if (i == 0 && GET_CODE (in_rtx) == ENTRY_VALUE)
 338           {
 339             indent += 2;
 340             if (!sawclose)
 341               fprintf (outfile, " ");
 342             print_rtx (ENTRY_VALUE_EXP (in_rtx));
 343             indent -= 2;
 344           }
 345         break;
 346
 347       case 'e':
 348       do_e:
 349         indent += 2;
 350         if (i == 7 && INSN_P (in_rtx))
 351           /* Put REG_NOTES on their own line.  */
 352           fprintf (outfile, "\n%s%*s",
 353                    print_rtx_head, indent * 2, "");
 354         if (!sawclose)
 355           fprintf (outfile, " ");
 356         print_rtx (XEXP (in_rtx, i));
 357         indent -= 2;
 358         break;
 359
 360       case 'E':
 361       case 'V':
 362         indent += 2;
 363         if (sawclose)
 364           {
 365             fprintf (outfile, "\n%s%*s",
 366                      print_rtx_head, indent * 2, "");
 367             sawclose = 0;
 368           }
 369         fputs (" [", outfile);
 370         if (NULL != XVEC (in_rtx, i))
 371           {
 372             indent += 2;
 373             if (XVECLEN (in_rtx, i))
 374               sawclose = 1;
 375
 376             for (j = 0; j < XVECLEN (in_rtx, i); j++)
 377               print_rtx (XVECEXP (in_rtx, i, j));
 378
 379             indent -= 2;
 380           }
 381         if (sawclose)
 382           fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 383
 384         fputs ("]", outfile);
 385         sawclose = 1;
 386         indent -= 2;
 387         break;
 388
 389       case 'w':
 390         if (! flag_simple)
 391           fprintf (outfile, " ");
 392         fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
 393         if (! flag_simple)
 394           fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
 395                    (unsigned HOST_WIDE_INT) XWINT (in_rtx, i));
 396         break;
 397
 398       case 'i':
 399         if (i == 5 && INSN_P (in_rtx))
 400           {
 401 #ifndef GENERATOR_FILE
 402             /*  Pretty-print insn locators.  Ignore scoping as it is mostly
 403                 redundant with line number information and do not print anything
 404                 when there is no location information available.  */
 405             if (INSN_LOCATOR (in_rtx) && insn_file (in_rtx))
 406               fprintf(outfile, " %s:%i", insn_file (in_rtx), insn_line (in_rtx));
 407 #endif
 408           }
 409         else if (i == 6 && GET_CODE (in_rtx) == ASM_OPERANDS)
 410           {
 411 #ifndef GENERATOR_FILE
 412             fprintf (outfile, " %s:%i",
 413                      locator_file (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)),
 414                      locator_line (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)));
 415 #endif
 416           }
 417         else if (i == 1 && GET_CODE (in_rtx) == ASM_INPUT)
 418           {
 419 #ifndef GENERATOR_FILE
 420             fprintf (outfile, " %s:%i",
 421                      locator_file (ASM_INPUT_SOURCE_LOCATION (in_rtx)),
 422                      locator_line (ASM_INPUT_SOURCE_LOCATION (in_rtx)));
 423 #endif
 424           }
 425         else if (i == 6 && NOTE_P (in_rtx))
 426           {
 427             /* This field is only used for NOTE_INSN_DELETED_LABEL, and
 428                other times often contains garbage from INSN->NOTE death.  */
 429             if (NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_LABEL)
 430               fprintf (outfile, " %d",  XINT (in_rtx, i));
 431           }
 432 #if !defined(GENERATOR_FILE) && NUM_UNSPECV_VALUES > 0
 433         else if (i == 1
 434                  && GET_CODE (in_rtx) == UNSPEC_VOLATILE
 435                  && XINT (in_rtx, 1) >= 0
 436                  && XINT (in_rtx, 1) < NUM_UNSPECV_VALUES)
 437           fprintf (outfile, " %s", unspecv_strings[XINT (in_rtx, 1)]);
 438 #endif
 439 #if !defined(GENERATOR_FILE) && NUM_UNSPEC_VALUES > 0
 440         else if (i == 1
 441                  && (GET_CODE (in_rtx) == UNSPEC
 442                      || GET_CODE (in_rtx) == UNSPEC_VOLATILE)
 443                  && XINT (in_rtx, 1) >= 0
 444                  && XINT (in_rtx, 1) < NUM_UNSPEC_VALUES)
 445           fprintf (outfile, " %s", unspec_strings[XINT (in_rtx, 1)]);
 446 #endif
 447         else
 448           {
 449             int value = XINT (in_rtx, i);
 450             const char *name;
 451
 452 #ifndef GENERATOR_FILE
 453             if (REG_P (in_rtx) && value < FIRST_PSEUDO_REGISTER)
 454               fprintf (outfile, " %d %s", REGNO (in_rtx),
 455                        reg_names[REGNO (in_rtx)]);
 456             else if (REG_P (in_rtx)
 457                      && value <= LAST_VIRTUAL_REGISTER)
 458               {
 459                 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
 460                   fprintf (outfile, " %d virtual-incoming-args", value);
 461                 else if (value == VIRTUAL_STACK_VARS_REGNUM)
 462                   fprintf (outfile, " %d virtual-stack-vars", value);
 463                 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
 464                   fprintf (outfile, " %d virtual-stack-dynamic", value);
 465                 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
 466                   fprintf (outfile, " %d virtual-outgoing-args", value);
 467                 else if (value == VIRTUAL_CFA_REGNUM)
 468                   fprintf (outfile, " %d virtual-cfa", value);
 469                 else if (value == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 470                   fprintf (outfile, " %d virtual-preferred-stack-boundary",
 471                            value);
 472                 else
 473                   fprintf (outfile, " %d virtual-reg-%d", value,
 474                            value-FIRST_VIRTUAL_REGISTER);
 475               }
 476             else
 477 #endif
 478               if (flag_dump_unnumbered
 479                      && (is_insn || NOTE_P (in_rtx)))
 480               fputc ('#', outfile);
 481             else
 482               fprintf (outfile, " %d", value);
 483
 484 #ifndef GENERATOR_FILE
 485             if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
 486               {
 487                 fputs (" [", outfile);
 488                 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
 489                   fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 490                 if (REG_EXPR (in_rtx))
 491                   print_mem_expr (outfile, REG_EXPR (in_rtx));
 492
 493                 if (REG_OFFSET (in_rtx))
 494                   fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 495                            REG_OFFSET (in_rtx));
 496                 fputs (" ]", outfile);
 497               }
 498 #endif
 499
 500             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 501                 && XINT (in_rtx, i) >= 0
 502                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 503               fprintf (outfile, " {%s}", name);
 504             sawclose = 0;
 505           }
 506         break;
 507
 508       /* Print NOTE_INSN names rather than integer codes.  */
 509
 510       case 'n':
 511         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 512         sawclose = 0;
 513         break;
 514
 515       case 'u':
 516         if (XEXP (in_rtx, i) != NULL)
 517           {
 518             rtx sub = XEXP (in_rtx, i);
 519             enum rtx_code subc = GET_CODE (sub);
 520
 521             if (GET_CODE (in_rtx) == LABEL_REF)
 522               {
 523                 if (subc == NOTE
 524                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 525                   {
 526                     if (flag_dump_unnumbered)
 527                       fprintf (outfile, " [# deleted]");
 528                     else
 529                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 530                     sawclose = 0;
 531                     break;
 532                   }
 533
 534                 if (subc != CODE_LABEL)
 535                   goto do_e;
 536               }
 537
 538             if (flag_dump_unnumbered
 539                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 540                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 541                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 542               fputs (" #", outfile);
 543             else
 544               fprintf (outfile, " %d", INSN_UID (sub));
 545           }
 546         else
 547           fputs (" 0", outfile);
 548         sawclose = 0;
 549         break;
 550
 551       case 't':
 552 #ifndef GENERATOR_FILE
 553         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 554           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 555         else
 556           dump_addr (outfile, " ", XTREE (in_rtx, i));
 557 #endif
 558         break;
 559
 560       case '*':
 561         fputs (" Unknown", outfile);
 562         sawclose = 0;
 563         break;
 564
 565       case 'B':
 566 #ifndef GENERATOR_FILE
 567         if (XBBDEF (in_rtx, i))
 568           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 569 #endif
 570         break;
 571
 572       default:
 573         gcc_unreachable ();
 574       }
 575
 576   switch (GET_CODE (in_rtx))
 577     {
 578 #ifndef GENERATOR_FILE
 579     case MEM:
 580       if (__builtin_expect (final_insns_dump_p, false))
 581         fprintf (outfile, " [");
 582       else
 583         fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 584                  (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 585
 586       if (MEM_EXPR (in_rtx))
 587         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 588
 589       if (MEM_OFFSET (in_rtx))
 590         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 591                  INTVAL (MEM_OFFSET (in_rtx)));
 592
 593       if (MEM_SIZE (in_rtx))
 594         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC,
 595                  INTVAL (MEM_SIZE (in_rtx)));
 596
 597       if (MEM_ALIGN (in_rtx) != 1)
 598         fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
 599
 600       if (!ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (in_rtx)))
 601         fprintf (outfile, " AS%u", MEM_ADDR_SPACE (in_rtx));
 602
 603       fputc (']', outfile);
 604       break;
 605
 606     case CONST_DOUBLE:
 607       if (FLOAT_MODE_P (GET_MODE (in_rtx)))
 608         {
 609           char s[60];
 610
 611           real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 612                            sizeof (s), 0, 1);
 613           fprintf (outfile, " %s", s);
 614
 615           real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 616                                sizeof (s), 0, 1);
 617           fprintf (outfile, " [%s]", s);
 618         }
 619       break;
 620 #endif
 621
 622     case CODE_LABEL:
 623       fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
 624       switch (LABEL_KIND (in_rtx))
 625         {
 626           case LABEL_NORMAL: break;
 627           case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
 628           case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
 629           case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
 630           default: gcc_unreachable ();
 631         }
 632       break;
 633
 634     default:
 635       break;
 636     }
 637
 638   if (dump_for_graph
 639       && (is_insn || NOTE_P (in_rtx)
 640           || LABEL_P (in_rtx) || BARRIER_P (in_rtx)))
 641     sawclose = 0;
 642   else
 643     {
 644       fputc (')', outfile);
 645       sawclose = 1;
 646     }
 647 }
 648
 649 /* Print an rtx on the current line of FILE.  Initially indent IND
 650    characters.  */
 651
 652 void
 653 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 654 {
 655   int oldsaw = sawclose;
 656   int oldindent = indent;
 657
 658   sawclose = 0;
 659   indent = ind;
 660   outfile = outf;
 661   print_rtx (x);
 662   sawclose = oldsaw;
 663   indent = oldindent;
 664 }
 665
 666 /* Call this function from the debugger to see what X looks like.  */
 667
 668 DEBUG_FUNCTION void
 669 debug_rtx (const_rtx x)
 670 {
 671   outfile = stderr;
 672   sawclose = 0;
 673   print_rtx (x);
 674   fprintf (stderr, "\n");
 675 }
 676
 677 /* Count of rtx's to print with debug_rtx_list.
 678    This global exists because gdb user defined commands have no arguments.  */
 679
 680 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 681
 682 /* Call this function to print list from X on.
 683
 684    N is a count of the rtx's to print. Positive values print from the specified
 685    rtx on.  Negative values print a window around the rtx.
 686    EG: -5 prints 2 rtx's on either side (in addition to the specified rtx).  */
 687
 688 DEBUG_FUNCTION void
 689 debug_rtx_list (const_rtx x, int n)
 690 {
 691   int i,count;
 692   const_rtx insn;
 693
 694   count = n == 0 ? 1 : n < 0 ? -n : n;
 695
 696   /* If we are printing a window, back up to the start.  */
 697
 698   if (n < 0)
 699     for (i = count / 2; i > 0; i--)
 700       {
 701         if (PREV_INSN (x) == 0)
 702           break;
 703         x = PREV_INSN (x);
 704       }
 705
 706   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 707     {
 708       debug_rtx (insn);
 709       fprintf (stderr, "\n");
 710     }
 711 }
 712
 713 /* Call this function to print an rtx list from START to END inclusive.  */
 714
 715 DEBUG_FUNCTION void
 716 debug_rtx_range (const_rtx start, const_rtx end)
 717 {
 718   while (1)
 719     {
 720       debug_rtx (start);
 721       fprintf (stderr, "\n");
 722       if (!start || start == end)
 723         break;
 724       start = NEXT_INSN (start);
 725     }
 726 }
 727
 728 /* Call this function to search an rtx list to find one with insn uid UID,
 729    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 730    The found insn is returned to enable further debugging analysis.  */
 731
 732 DEBUG_FUNCTION const_rtx
 733 debug_rtx_find (const_rtx x, int uid)
 734 {
 735   while (x != 0 && INSN_UID (x) != uid)
 736     x = NEXT_INSN (x);
 737   if (x != 0)
 738     {
 739       debug_rtx_list (x, debug_rtx_count);
 740       return x;
 741     }
 742   else
 743     {
 744       fprintf (stderr, "insn uid %d not found\n", uid);
 745       return 0;
 746     }
 747 }
 748
 749 /* External entry point for printing a chain of insns
 750    starting with RTX_FIRST onto file OUTF.
 751    A blank line separates insns.
 752
 753    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 754
 755 void
 756 print_rtl (FILE *outf, const_rtx rtx_first)
 757 {
 758   const_rtx tmp_rtx;
 759
 760   outfile = outf;
 761   sawclose = 0;
 762
 763   if (rtx_first == 0)
 764     {
 765       fputs (print_rtx_head, outf);
 766       fputs ("(nil)\n", outf);
 767     }
 768   else
 769     switch (GET_CODE (rtx_first))
 770       {
 771       case INSN:
 772       case JUMP_INSN:
 773       case CALL_INSN:
 774       case NOTE:
 775       case CODE_LABEL:
 776       case BARRIER:
 777         for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
 778           {
 779             fputs (print_rtx_head, outfile);
 780             print_rtx (tmp_rtx);
 781             fprintf (outfile, "\n");
 782           }
 783         break;
 784
 785       default:
 786         fputs (print_rtx_head, outfile);
 787         print_rtx (rtx_first);
 788       }
 789 }
 790
 791 /* Like print_rtx, except specify a file.  */
 792 /* Return nonzero if we actually printed anything.  */
 793
 794 int
 795 print_rtl_single (FILE *outf, const_rtx x)
 796 {
 797   outfile = outf;
 798   sawclose = 0;
 799   fputs (print_rtx_head, outfile);
 800   print_rtx (x);
 801   putc ('\n', outf);
 802   return 1;
 803 }
 804
 805
 806 /* Like print_rtl except without all the detail; for example,
 807    if RTX is a CONST_INT then print in decimal format.  */
 808
 809 void
 810 print_simple_rtl (FILE *outf, const_rtx x)
 811 {
 812   flag_simple = 1;
 813   print_rtl (outf, x);
 814   flag_simple = 0;
 815 }