gcc/print-rtl.c

   1 /* Print RTL for GCC.
   2    Copyright (C) 1987-2014 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 /* This file is compiled twice: once for the generator programs,
  21    once for the compiler.  */
  22 #ifdef GENERATOR_FILE
  23 #include "bconfig.h"
  24 #else
  25 #include "config.h"
  26 #endif
  27
  28 #include "system.h"
  29 #include "coretypes.h"
  30 #include "tm.h"
  31 #include "rtl.h"
  32
  33 /* These headers all define things which are not available in
  34    generator programs.  */
  35 #ifndef GENERATOR_FILE
  36 #include "tree.h"
  37 #include "print-tree.h"
  38 #include "flags.h"
  39 #include "hard-reg-set.h"
  40 #include "basic-block.h"
  41 #include "diagnostic.h"
  42 #include "tree-pretty-print.h"
  43 #include "cselib.h"
  44 #include "dumpfile.h"   /* for dump_flags */
  45 #include "dwarf2out.h"
  46 #endif
  47
  48 static FILE *outfile;
  49
  50 static int sawclose = 0;
  51
  52 static int indent;
  53
  54 static bool in_call_function_usage;
  55
  56 static void print_rtx (const_rtx);
  57
  58 /* String printed at beginning of each RTL when it is dumped.
  59    This string is set to ASM_COMMENT_START when the RTL is dumped in
  60    the assembly output file.  */
  61 const char *print_rtx_head = "";
  62
  63 #ifdef GENERATOR_FILE
  64 /* These are defined from the .opt file when not used in generator
  65    programs.  */
  66
  67 /* Nonzero means suppress output of instruction numbers
  68    in debugging dumps.
  69    This must be defined here so that programs like gencodes can be linked.  */
  70 int flag_dump_unnumbered = 0;
  71
  72 /* Nonzero means suppress output of instruction numbers for previous
  73    and next insns in debugging dumps.
  74    This must be defined here so that programs like gencodes can be linked.  */
  75 int flag_dump_unnumbered_links = 0;
  76 #endif
  77
  78 /* Nonzero means use simplified format without flags, modes, etc.  */
  79 int flag_simple = 0;
  80
  81 #ifndef GENERATOR_FILE
  82 void
  83 print_mem_expr (FILE *outfile, const_tree expr)
  84 {
  85   fputc (' ', outfile);
  86   print_generic_expr (outfile, CONST_CAST_TREE (expr), dump_flags);
  87 }
  88 #endif
  89
  90 /* Print IN_RTX onto OUTFILE.  This is the recursive part of printing.  */
  91
  92 static void
  93 print_rtx (const_rtx in_rtx)
  94 {
  95   int i = 0;
  96   int j;
  97   const char *format_ptr;
  98   int is_insn;
  99
 100   if (sawclose)
 101     {
 102       if (flag_simple)
 103         fputc (' ', outfile);
 104       else
 105         fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 106       sawclose = 0;
 107     }
 108
 109   if (in_rtx == 0)
 110     {
 111       fputs ("(nil)", outfile);
 112       sawclose = 1;
 113       return;
 114     }
 115   else if (GET_CODE (in_rtx) > NUM_RTX_CODE)
 116     {
 117        fprintf (outfile, "(??? bad code %d\n%s%*s)", GET_CODE (in_rtx),
 118                 print_rtx_head, indent * 2, "");
 119        sawclose = 1;
 120        return;
 121     }
 122
 123   is_insn = INSN_P (in_rtx);
 124
 125   /* Print name of expression code.  */
 126   if (flag_simple && CONST_INT_P (in_rtx))
 127     fputc ('(', outfile);
 128   else
 129     fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
 130
 131   if (! flag_simple)
 132     {
 133       if (RTX_FLAG (in_rtx, in_struct))
 134         fputs ("/s", outfile);
 135
 136       if (RTX_FLAG (in_rtx, volatil))
 137         fputs ("/v", outfile);
 138
 139       if (RTX_FLAG (in_rtx, unchanging))
 140         fputs ("/u", outfile);
 141
 142       if (RTX_FLAG (in_rtx, frame_related))
 143         fputs ("/f", outfile);
 144
 145       if (RTX_FLAG (in_rtx, jump))
 146         fputs ("/j", outfile);
 147
 148       if (RTX_FLAG (in_rtx, call))
 149         fputs ("/c", outfile);
 150
 151       if (RTX_FLAG (in_rtx, return_val))
 152         fputs ("/i", outfile);
 153
 154       /* Print REG_NOTE names for EXPR_LIST and INSN_LIST.  */
 155       if ((GET_CODE (in_rtx) == EXPR_LIST
 156            || GET_CODE (in_rtx) == INSN_LIST
 157            || GET_CODE (in_rtx) == INT_LIST)
 158           && (int)GET_MODE (in_rtx) < REG_NOTE_MAX
 159           && !in_call_function_usage)
 160         fprintf (outfile, ":%s",
 161                  GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
 162
 163       /* For other rtl, print the mode if it's not VOID.  */
 164       else if (GET_MODE (in_rtx) != VOIDmode)
 165         fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
 166
 167 #ifndef GENERATOR_FILE
 168       if (GET_CODE (in_rtx) == VAR_LOCATION)
 169         {
 170           if (TREE_CODE (PAT_VAR_LOCATION_DECL (in_rtx)) == STRING_CST)
 171             fputs (" <debug string placeholder>", outfile);
 172           else
 173             print_mem_expr (outfile, PAT_VAR_LOCATION_DECL (in_rtx));
 174           fputc (' ', outfile);
 175           print_rtx (PAT_VAR_LOCATION_LOC (in_rtx));
 176           if (PAT_VAR_LOCATION_STATUS (in_rtx)
 177               == VAR_INIT_STATUS_UNINITIALIZED)
 178             fprintf (outfile, " [uninit]");
 179           sawclose = 1;
 180           i = GET_RTX_LENGTH (VAR_LOCATION);
 181         }
 182 #endif
 183     }
 184
 185 #ifndef GENERATOR_FILE
 186   if (CONST_DOUBLE_AS_FLOAT_P (in_rtx))
 187     i = 5;
 188 #endif
 189
 190   if (INSN_CHAIN_CODE_P (GET_CODE (in_rtx)))
 191     {
 192       if (flag_dump_unnumbered)
 193         fprintf (outfile, " #");
 194       else
 195         fprintf (outfile, " %d", INSN_UID (in_rtx));
 196     }
 197
 198   /* Get the format string and skip the first elements if we have handled
 199      them already.  */
 200   format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
 201   for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
 202     switch (*format_ptr++)
 203       {
 204         const char *str;
 205
 206       case 'T':
 207         str = XTMPL (in_rtx, i);
 208         goto string;
 209
 210       case 'S':
 211       case 's':
 212         str = XSTR (in_rtx, i);
 213       string:
 214
 215         if (str == 0)
 216           fputs (" \"\"", outfile);
 217         else
 218           fprintf (outfile, " (\"%s\")", str);
 219         sawclose = 1;
 220         break;
 221
 222         /* 0 indicates a field for internal use that should not be printed.
 223            An exception is the third field of a NOTE, where it indicates
 224            that the field has several different valid contents.  */
 225       case '0':
 226 #ifndef GENERATOR_FILE
 227         if (i == 1 && GET_CODE (in_rtx) == SYMBOL_REF)
 228           {
 229             int flags = SYMBOL_REF_FLAGS (in_rtx);
 230             if (flags)
 231               fprintf (outfile, " [flags %#x]", flags);
 232             tree decl = SYMBOL_REF_DECL (in_rtx);
 233             if (decl)
 234               print_node_brief (outfile, "", decl, dump_flags);
 235           }
 236         else if (i == 3 && NOTE_P (in_rtx))
 237           {
 238             switch (NOTE_KIND (in_rtx))
 239               {
 240               case NOTE_INSN_EH_REGION_BEG:
 241               case NOTE_INSN_EH_REGION_END:
 242                 if (flag_dump_unnumbered)
 243                   fprintf (outfile, " #");
 244                 else
 245                   fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
 246                 sawclose = 1;
 247                 break;
 248
 249               case NOTE_INSN_BLOCK_BEG:
 250               case NOTE_INSN_BLOCK_END:
 251                 dump_addr (outfile, " ", NOTE_BLOCK (in_rtx));
 252                 sawclose = 1;
 253                 break;
 254
 255               case NOTE_INSN_BASIC_BLOCK:
 256                 {
 257                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 258                   if (bb != 0)
 259                     fprintf (outfile, " [bb %d]", bb->index);
 260                   break;
 261                 }
 262
 263               case NOTE_INSN_DELETED_LABEL:
 264               case NOTE_INSN_DELETED_DEBUG_LABEL:
 265                 {
 266                   const char *label = NOTE_DELETED_LABEL_NAME (in_rtx);
 267                   if (label)
 268                     fprintf (outfile, " (\"%s\")", label);
 269                   else
 270                     fprintf (outfile, " \"\"");
 271                 }
 272                 break;
 273
 274               case NOTE_INSN_SWITCH_TEXT_SECTIONS:
 275                 {
 276                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 277                   if (bb != 0)
 278                     fprintf (outfile, " [bb %d]", bb->index);
 279                   break;
 280                 }
 281
 282               case NOTE_INSN_VAR_LOCATION:
 283               case NOTE_INSN_CALL_ARG_LOCATION:
 284                 fputc (' ', outfile);
 285                 print_rtx (NOTE_VAR_LOCATION (in_rtx));
 286                 break;
 287
 288               case NOTE_INSN_CFI:
 289                 fputc ('\n', outfile);
 290                 output_cfi_directive (outfile, NOTE_CFI (in_rtx));
 291                 fputc ('\t', outfile);
 292                 break;
 293
 294               default:
 295                 break;
 296               }
 297           }
 298         else if (i == 7 && JUMP_P (in_rtx) && JUMP_LABEL (in_rtx) != NULL)
 299           {
 300             /* Output the JUMP_LABEL reference.  */
 301             fprintf (outfile, "\n%s%*s -> ", print_rtx_head, indent * 2, "");
 302             if (GET_CODE (JUMP_LABEL (in_rtx)) == RETURN)
 303               fprintf (outfile, "return");
 304             else if (GET_CODE (JUMP_LABEL (in_rtx)) == SIMPLE_RETURN)
 305               fprintf (outfile, "simple_return");
 306             else
 307               fprintf (outfile, "%d", INSN_UID (JUMP_LABEL (in_rtx)));
 308           }
 309         else if (i == 0 && GET_CODE (in_rtx) == VALUE)
 310           {
 311             cselib_val *val = CSELIB_VAL_PTR (in_rtx);
 312
 313             fprintf (outfile, " %u:%u", val->uid, val->hash);
 314             dump_addr (outfile, " @", in_rtx);
 315             dump_addr (outfile, "/", (void*)val);
 316           }
 317         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_EXPR)
 318           {
 319             fprintf (outfile, " D#%i",
 320                      DEBUG_TEMP_UID (DEBUG_EXPR_TREE_DECL (in_rtx)));
 321           }
 322         else if (i == 0 && GET_CODE (in_rtx) == ENTRY_VALUE)
 323           {
 324             indent += 2;
 325             if (!sawclose)
 326               fprintf (outfile, " ");
 327             print_rtx (ENTRY_VALUE_EXP (in_rtx));
 328             indent -= 2;
 329           }
 330 #endif
 331         break;
 332
 333       case 'e':
 334       do_e:
 335         indent += 2;
 336         if (i == 6 && INSN_P (in_rtx))
 337           /* Put REG_NOTES on their own line.  */
 338           fprintf (outfile, "\n%s%*s",
 339                    print_rtx_head, indent * 2, "");
 340         if (!sawclose)
 341           fprintf (outfile, " ");
 342         if (i == 7 && CALL_P (in_rtx))
 343           {
 344             in_call_function_usage = true;
 345             print_rtx (XEXP (in_rtx, i));
 346             in_call_function_usage = false;
 347           }
 348         else
 349           print_rtx (XEXP (in_rtx, i));
 350         indent -= 2;
 351         break;
 352
 353       case 'E':
 354       case 'V':
 355         indent += 2;
 356         if (sawclose)
 357           {
 358             fprintf (outfile, "\n%s%*s",
 359                      print_rtx_head, indent * 2, "");
 360             sawclose = 0;
 361           }
 362         fputs (" [", outfile);
 363         if (NULL != XVEC (in_rtx, i))
 364           {
 365             indent += 2;
 366             if (XVECLEN (in_rtx, i))
 367               sawclose = 1;
 368
 369             for (j = 0; j < XVECLEN (in_rtx, i); j++)
 370               print_rtx (XVECEXP (in_rtx, i, j));
 371
 372             indent -= 2;
 373           }
 374         if (sawclose)
 375           fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 376
 377         fputs ("]", outfile);
 378         sawclose = 1;
 379         indent -= 2;
 380         break;
 381
 382       case 'w':
 383         if (! flag_simple)
 384           fprintf (outfile, " ");
 385         fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
 386         if (! flag_simple)
 387           fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
 388                    (unsigned HOST_WIDE_INT) XWINT (in_rtx, i));
 389         break;
 390
 391       case 'i':
 392         if (i == 4 && INSN_P (in_rtx))
 393           {
 394 #ifndef GENERATOR_FILE
 395             /*  Pretty-print insn locations.  Ignore scoping as it is mostly
 396                 redundant with line number information and do not print anything
 397                 when there is no location information available.  */
 398             if (INSN_LOCATION (in_rtx) && insn_file (in_rtx))
 399               fprintf (outfile, " %s:%i", insn_file (in_rtx),
 400                        insn_line (in_rtx));
 401 #endif
 402           }
 403         else if (i == 6 && GET_CODE (in_rtx) == ASM_OPERANDS)
 404           {
 405 #ifndef GENERATOR_FILE
 406             if (ASM_OPERANDS_SOURCE_LOCATION (in_rtx) != UNKNOWN_LOCATION)
 407               fprintf (outfile, " %s:%i",
 408                        LOCATION_FILE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)),
 409                        LOCATION_LINE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)));
 410 #endif
 411           }
 412         else if (i == 1 && GET_CODE (in_rtx) == ASM_INPUT)
 413           {
 414 #ifndef GENERATOR_FILE
 415             if (ASM_INPUT_SOURCE_LOCATION (in_rtx) != UNKNOWN_LOCATION)
 416               fprintf (outfile, " %s:%i",
 417                        LOCATION_FILE (ASM_INPUT_SOURCE_LOCATION (in_rtx)),
 418                        LOCATION_LINE (ASM_INPUT_SOURCE_LOCATION (in_rtx)));
 419 #endif
 420           }
 421         else if (i == 5 && NOTE_P (in_rtx))
 422           {
 423             /* This field is only used for NOTE_INSN_DELETED_LABEL, and
 424                other times often contains garbage from INSN->NOTE death.  */
 425             if (NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_LABEL
 426                 || NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_DEBUG_LABEL)
 427               fprintf (outfile, " %d",  XINT (in_rtx, i));
 428           }
 429 #if !defined(GENERATOR_FILE) && NUM_UNSPECV_VALUES > 0
 430         else if (i == 1
 431                  && GET_CODE (in_rtx) == UNSPEC_VOLATILE
 432                  && XINT (in_rtx, 1) >= 0
 433                  && XINT (in_rtx, 1) < NUM_UNSPECV_VALUES)
 434           fprintf (outfile, " %s", unspecv_strings[XINT (in_rtx, 1)]);
 435 #endif
 436 #if !defined(GENERATOR_FILE) && NUM_UNSPEC_VALUES > 0
 437         else if (i == 1
 438                  && (GET_CODE (in_rtx) == UNSPEC
 439                      || GET_CODE (in_rtx) == UNSPEC_VOLATILE)
 440                  && XINT (in_rtx, 1) >= 0
 441                  && XINT (in_rtx, 1) < NUM_UNSPEC_VALUES)
 442           fprintf (outfile, " %s", unspec_strings[XINT (in_rtx, 1)]);
 443 #endif
 444         else
 445           {
 446             int value = XINT (in_rtx, i);
 447             const char *name;
 448
 449 #ifndef GENERATOR_FILE
 450             if (REG_P (in_rtx) && (unsigned) value < FIRST_PSEUDO_REGISTER)
 451               fprintf (outfile, " %d %s", value, reg_names[value]);
 452             else if (REG_P (in_rtx)
 453                      && (unsigned) value <= LAST_VIRTUAL_REGISTER)
 454               {
 455                 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
 456                   fprintf (outfile, " %d virtual-incoming-args", value);
 457                 else if (value == VIRTUAL_STACK_VARS_REGNUM)
 458                   fprintf (outfile, " %d virtual-stack-vars", value);
 459                 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
 460                   fprintf (outfile, " %d virtual-stack-dynamic", value);
 461                 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
 462                   fprintf (outfile, " %d virtual-outgoing-args", value);
 463                 else if (value == VIRTUAL_CFA_REGNUM)
 464                   fprintf (outfile, " %d virtual-cfa", value);
 465                 else if (value == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 466                   fprintf (outfile, " %d virtual-preferred-stack-boundary",
 467                            value);
 468                 else
 469                   fprintf (outfile, " %d virtual-reg-%d", value,
 470                            value-FIRST_VIRTUAL_REGISTER);
 471               }
 472             else
 473 #endif
 474               if (flag_dump_unnumbered
 475                      && (is_insn || NOTE_P (in_rtx)))
 476               fputc ('#', outfile);
 477             else
 478               fprintf (outfile, " %d", value);
 479
 480 #ifndef GENERATOR_FILE
 481             if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
 482               {
 483                 fputs (" [", outfile);
 484                 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
 485                   fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 486                 if (REG_EXPR (in_rtx))
 487                   print_mem_expr (outfile, REG_EXPR (in_rtx));
 488
 489                 if (REG_OFFSET (in_rtx))
 490                   fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 491                            REG_OFFSET (in_rtx));
 492                 fputs (" ]", outfile);
 493               }
 494             if (REG_P (in_rtx) && REGNO (in_rtx) != ORIGINAL_REGNO (in_rtx))
 495               fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
 496 #endif
 497
 498             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 499                 && XINT (in_rtx, i) >= 0
 500                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 501               fprintf (outfile, " {%s}", name);
 502             sawclose = 0;
 503           }
 504         break;
 505
 506       /* Print NOTE_INSN names rather than integer codes.  */
 507
 508       case 'n':
 509         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 510         sawclose = 0;
 511         break;
 512
 513       case 'u':
 514         if (XEXP (in_rtx, i) != NULL)
 515           {
 516             rtx sub = XEXP (in_rtx, i);
 517             enum rtx_code subc = GET_CODE (sub);
 518
 519             if (GET_CODE (in_rtx) == LABEL_REF)
 520               {
 521                 if (subc == NOTE
 522                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 523                   {
 524                     if (flag_dump_unnumbered)
 525                       fprintf (outfile, " [# deleted]");
 526                     else
 527                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 528                     sawclose = 0;
 529                     break;
 530                   }
 531
 532                 if (subc != CODE_LABEL)
 533                   goto do_e;
 534               }
 535
 536             if (flag_dump_unnumbered
 537                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 538                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 539                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 540               fputs (" #", outfile);
 541             else
 542               fprintf (outfile, " %d", INSN_UID (sub));
 543           }
 544         else
 545           fputs (" 0", outfile);
 546         sawclose = 0;
 547         break;
 548
 549       case 't':
 550 #ifndef GENERATOR_FILE
 551         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 552           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 553         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_PARAMETER_REF)
 554           print_mem_expr (outfile, DEBUG_PARAMETER_REF_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       else
 589         fputc (' ', outfile);
 590
 591       if (MEM_OFFSET_KNOWN_P (in_rtx))
 592         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC, MEM_OFFSET (in_rtx));
 593
 594       if (MEM_SIZE_KNOWN_P (in_rtx))
 595         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC, 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
 621     case CONST_WIDE_INT:
 622       fprintf (outfile, " ");
 623       cwi_output_hex (outfile, in_rtx);
 624       break;
 625 #endif
 626
 627     case CODE_LABEL:
 628       fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
 629       switch (LABEL_KIND (in_rtx))
 630         {
 631           case LABEL_NORMAL: break;
 632           case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
 633           case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
 634           case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
 635           default: gcc_unreachable ();
 636         }
 637       break;
 638
 639     default:
 640       break;
 641     }
 642
 643   fputc (')', outfile);
 644   sawclose = 1;
 645 }
 646
 647 /* Print an rtx on the current line of FILE.  Initially indent IND
 648    characters.  */
 649
 650 void
 651 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 652 {
 653   int oldsaw = sawclose;
 654   int oldindent = indent;
 655
 656   sawclose = 0;
 657   indent = ind;
 658   outfile = outf;
 659   print_rtx (x);
 660   sawclose = oldsaw;
 661   indent = oldindent;
 662 }
 663
 664 /* Call this function from the debugger to see what X looks like.  */
 665
 666 DEBUG_FUNCTION void
 667 debug_rtx (const_rtx x)
 668 {
 669   outfile = stderr;
 670   sawclose = 0;
 671   print_rtx (x);
 672   fprintf (stderr, "\n");
 673 }
 674
 675 /* Dump rtx REF.  */
 676
 677 DEBUG_FUNCTION void
 678 debug (const rtx_def &ref)
 679 {
 680   debug_rtx (&ref);
 681 }
 682
 683 DEBUG_FUNCTION void
 684 debug (const rtx_def *ptr)
 685 {
 686   if (ptr)
 687     debug (*ptr);
 688   else
 689     fprintf (stderr, "<nil>\n");
 690 }
 691
 692 /* Count of rtx's to print with debug_rtx_list.
 693    This global exists because gdb user defined commands have no arguments.  */
 694
 695 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 696
 697 /* Call this function to print list from X on.
 698
 699    N is a count of the rtx's to print. Positive values print from the specified
 700    rtx on.  Negative values print a window around the rtx.
 701    EG: -5 prints 2 rtx's on either side (in addition to the specified rtx).  */
 702
 703 DEBUG_FUNCTION void
 704 debug_rtx_list (const_rtx x, int n)
 705 {
 706   int i,count;
 707   const_rtx insn;
 708
 709   count = n == 0 ? 1 : n < 0 ? -n : n;
 710
 711   /* If we are printing a window, back up to the start.  */
 712
 713   if (n < 0)
 714     for (i = count / 2; i > 0; i--)
 715       {
 716         if (PREV_INSN (x) == 0)
 717           break;
 718         x = PREV_INSN (x);
 719       }
 720
 721   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 722     {
 723       debug_rtx (insn);
 724       fprintf (stderr, "\n");
 725     }
 726 }
 727
 728 /* Call this function to print an rtx list from START to END inclusive.  */
 729
 730 DEBUG_FUNCTION void
 731 debug_rtx_range (const_rtx start, const_rtx end)
 732 {
 733   while (1)
 734     {
 735       debug_rtx (start);
 736       fprintf (stderr, "\n");
 737       if (!start || start == end)
 738         break;
 739       start = NEXT_INSN (start);
 740     }
 741 }
 742
 743 /* Call this function to search an rtx list to find one with insn uid UID,
 744    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 745    The found insn is returned to enable further debugging analysis.  */
 746
 747 DEBUG_FUNCTION const_rtx
 748 debug_rtx_find (const_rtx x, int uid)
 749 {
 750   while (x != 0 && INSN_UID (x) != uid)
 751     x = NEXT_INSN (x);
 752   if (x != 0)
 753     {
 754       debug_rtx_list (x, debug_rtx_count);
 755       return x;
 756     }
 757   else
 758     {
 759       fprintf (stderr, "insn uid %d not found\n", uid);
 760       return 0;
 761     }
 762 }
 763
 764 /* External entry point for printing a chain of insns
 765    starting with RTX_FIRST onto file OUTF.
 766    A blank line separates insns.
 767
 768    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 769
 770 void
 771 print_rtl (FILE *outf, const_rtx rtx_first)
 772 {
 773   const_rtx tmp_rtx;
 774
 775   outfile = outf;
 776   sawclose = 0;
 777
 778   if (rtx_first == 0)
 779     {
 780       fputs (print_rtx_head, outf);
 781       fputs ("(nil)\n", outf);
 782     }
 783   else
 784     switch (GET_CODE (rtx_first))
 785       {
 786       case INSN:
 787       case JUMP_INSN:
 788       case CALL_INSN:
 789       case NOTE:
 790       case CODE_LABEL:
 791       case JUMP_TABLE_DATA:
 792       case BARRIER:
 793         for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
 794           {
 795             fputs (print_rtx_head, outfile);
 796             print_rtx (tmp_rtx);
 797             fprintf (outfile, "\n");
 798           }
 799         break;
 800
 801       default:
 802         fputs (print_rtx_head, outfile);
 803         print_rtx (rtx_first);
 804       }
 805 }
 806
 807 /* Like print_rtx, except specify a file.  */
 808 /* Return nonzero if we actually printed anything.  */
 809
 810 int
 811 print_rtl_single (FILE *outf, const_rtx x)
 812 {
 813   return print_rtl_single_with_indent (outf, x, 0);
 814 }
 815
 816 /* Like print_rtl_single, except specify a file and indentation.  */
 817
 818 int
 819 print_rtl_single_with_indent (FILE *outf, const_rtx x, int ind)
 820 {
 821   int old_indent = indent;
 822   char *s_indent = (char *) alloca ((size_t) ind + 1);
 823   memset ((void *) s_indent, ' ', (size_t) ind);
 824   s_indent[ind] = '\0';
 825
 826   indent = ind;
 827   outfile = outf;
 828   sawclose = 0;
 829   fputs (s_indent, outfile);
 830   fputs (print_rtx_head, outfile);
 831   print_rtx (x);
 832   putc ('\n', outf);
 833   indent = old_indent;
 834   return 1;
 835 }
 836
 837
 838 /* Like print_rtl except without all the detail; for example,
 839    if RTX is a CONST_INT then print in decimal format.  */
 840
 841 void
 842 print_simple_rtl (FILE *outf, const_rtx x)
 843 {
 844   flag_simple = 1;
 845   print_rtl (outf, x);
 846   flag_simple = 0;
 847 }