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     fprintf (outfile, " %d", INSN_UID (in_rtx));
 192
 193   /* Get the format string and skip the first elements if we have handled
 194      them already.  */
 195   format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
 196   for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
 197     switch (*format_ptr++)
 198       {
 199         const char *str;
 200
 201       case 'T':
 202         str = XTMPL (in_rtx, i);
 203         goto string;
 204
 205       case 'S':
 206       case 's':
 207         str = XSTR (in_rtx, i);
 208       string:
 209
 210         if (str == 0)
 211           fputs (" \"\"", outfile);
 212         else
 213           fprintf (outfile, " (\"%s\")", str);
 214         sawclose = 1;
 215         break;
 216
 217         /* 0 indicates a field for internal use that should not be printed.
 218            An exception is the third field of a NOTE, where it indicates
 219            that the field has several different valid contents.  */
 220       case '0':
 221 #ifndef GENERATOR_FILE
 222         if (i == 1 && GET_CODE (in_rtx) == SYMBOL_REF)
 223           {
 224             int flags = SYMBOL_REF_FLAGS (in_rtx);
 225             if (flags)
 226               fprintf (outfile, " [flags %#x]", flags);
 227           }
 228         else if (i == 2 && GET_CODE (in_rtx) == SYMBOL_REF)
 229           {
 230             tree decl = SYMBOL_REF_DECL (in_rtx);
 231             if (decl)
 232               print_node_brief (outfile, "", decl, dump_flags);
 233           }
 234         else if (i == 3 && NOTE_P (in_rtx))
 235           {
 236             switch (NOTE_KIND (in_rtx))
 237               {
 238               case NOTE_INSN_EH_REGION_BEG:
 239               case NOTE_INSN_EH_REGION_END:
 240                 if (flag_dump_unnumbered)
 241                   fprintf (outfile, " #");
 242                 else
 243                   fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
 244                 sawclose = 1;
 245                 break;
 246
 247               case NOTE_INSN_BLOCK_BEG:
 248               case NOTE_INSN_BLOCK_END:
 249                 dump_addr (outfile, " ", NOTE_BLOCK (in_rtx));
 250                 sawclose = 1;
 251                 break;
 252
 253               case NOTE_INSN_BASIC_BLOCK:
 254                 {
 255                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 256                   if (bb != 0)
 257                     fprintf (outfile, " [bb %d]", bb->index);
 258                   break;
 259                 }
 260
 261               case NOTE_INSN_DELETED_LABEL:
 262               case NOTE_INSN_DELETED_DEBUG_LABEL:
 263                 {
 264                   const char *label = NOTE_DELETED_LABEL_NAME (in_rtx);
 265                   if (label)
 266                     fprintf (outfile, " (\"%s\")", label);
 267                   else
 268                     fprintf (outfile, " \"\"");
 269                 }
 270                 break;
 271
 272               case NOTE_INSN_SWITCH_TEXT_SECTIONS:
 273                 {
 274                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 275                   if (bb != 0)
 276                     fprintf (outfile, " [bb %d]", bb->index);
 277                   break;
 278                 }
 279
 280               case NOTE_INSN_VAR_LOCATION:
 281               case NOTE_INSN_CALL_ARG_LOCATION:
 282                 fputc (' ', outfile);
 283                 print_rtx (NOTE_VAR_LOCATION (in_rtx));
 284                 break;
 285
 286               case NOTE_INSN_CFI:
 287                 fputc ('\n', outfile);
 288                 output_cfi_directive (outfile, NOTE_CFI (in_rtx));
 289                 fputc ('\t', outfile);
 290                 break;
 291
 292               default:
 293                 break;
 294               }
 295           }
 296         else if (i == 7 && JUMP_P (in_rtx) && JUMP_LABEL (in_rtx) != NULL)
 297           {
 298             /* Output the JUMP_LABEL reference.  */
 299             fprintf (outfile, "\n%s%*s -> ", print_rtx_head, indent * 2, "");
 300             if (GET_CODE (JUMP_LABEL (in_rtx)) == RETURN)
 301               fprintf (outfile, "return");
 302             else if (GET_CODE (JUMP_LABEL (in_rtx)) == SIMPLE_RETURN)
 303               fprintf (outfile, "simple_return");
 304             else
 305               fprintf (outfile, "%d", INSN_UID (JUMP_LABEL (in_rtx)));
 306           }
 307         else if (i == 0 && GET_CODE (in_rtx) == VALUE)
 308           {
 309             cselib_val *val = CSELIB_VAL_PTR (in_rtx);
 310
 311             fprintf (outfile, " %u:%u", val->uid, val->hash);
 312             dump_addr (outfile, " @", in_rtx);
 313             dump_addr (outfile, "/", (void*)val);
 314           }
 315         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_EXPR)
 316           {
 317             fprintf (outfile, " D#%i",
 318                      DEBUG_TEMP_UID (DEBUG_EXPR_TREE_DECL (in_rtx)));
 319           }
 320         else if (i == 0 && GET_CODE (in_rtx) == ENTRY_VALUE)
 321           {
 322             indent += 2;
 323             if (!sawclose)
 324               fprintf (outfile, " ");
 325             print_rtx (ENTRY_VALUE_EXP (in_rtx));
 326             indent -= 2;
 327           }
 328 #endif
 329         break;
 330
 331       case 'e':
 332       do_e:
 333         indent += 2;
 334         if (i == 6 && INSN_P (in_rtx))
 335           /* Put REG_NOTES on their own line.  */
 336           fprintf (outfile, "\n%s%*s",
 337                    print_rtx_head, indent * 2, "");
 338         if (!sawclose)
 339           fprintf (outfile, " ");
 340         if (i == 7 && CALL_P (in_rtx))
 341           {
 342             in_call_function_usage = true;
 343             print_rtx (XEXP (in_rtx, i));
 344             in_call_function_usage = false;
 345           }
 346         else
 347           print_rtx (XEXP (in_rtx, i));
 348         indent -= 2;
 349         break;
 350
 351       case 'E':
 352       case 'V':
 353         indent += 2;
 354         if (sawclose)
 355           {
 356             fprintf (outfile, "\n%s%*s",
 357                      print_rtx_head, indent * 2, "");
 358             sawclose = 0;
 359           }
 360         fputs (" [", outfile);
 361         if (NULL != XVEC (in_rtx, i))
 362           {
 363             indent += 2;
 364             if (XVECLEN (in_rtx, i))
 365               sawclose = 1;
 366
 367             for (j = 0; j < XVECLEN (in_rtx, i); j++)
 368               print_rtx (XVECEXP (in_rtx, i, j));
 369
 370             indent -= 2;
 371           }
 372         if (sawclose)
 373           fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 374
 375         fputs ("]", outfile);
 376         sawclose = 1;
 377         indent -= 2;
 378         break;
 379
 380       case 'w':
 381         if (! flag_simple)
 382           fprintf (outfile, " ");
 383         fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
 384         if (! flag_simple)
 385           fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
 386                    (unsigned HOST_WIDE_INT) XWINT (in_rtx, i));
 387         break;
 388
 389       case 'i':
 390         if (i == 4 && INSN_P (in_rtx))
 391           {
 392 #ifndef GENERATOR_FILE
 393             /*  Pretty-print insn locations.  Ignore scoping as it is mostly
 394                 redundant with line number information and do not print anything
 395                 when there is no location information available.  */
 396             if (INSN_LOCATION (in_rtx) && insn_file (in_rtx))
 397               fprintf (outfile, " %s:%i", insn_file (in_rtx),
 398                        insn_line (in_rtx));
 399 #endif
 400           }
 401         else if (i == 6 && GET_CODE (in_rtx) == ASM_OPERANDS)
 402           {
 403 #ifndef GENERATOR_FILE
 404             if (ASM_OPERANDS_SOURCE_LOCATION (in_rtx) != UNKNOWN_LOCATION)
 405               fprintf (outfile, " %s:%i",
 406                        LOCATION_FILE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)),
 407                        LOCATION_LINE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)));
 408 #endif
 409           }
 410         else if (i == 1 && GET_CODE (in_rtx) == ASM_INPUT)
 411           {
 412 #ifndef GENERATOR_FILE
 413             if (ASM_INPUT_SOURCE_LOCATION (in_rtx) != UNKNOWN_LOCATION)
 414               fprintf (outfile, " %s:%i",
 415                        LOCATION_FILE (ASM_INPUT_SOURCE_LOCATION (in_rtx)),
 416                        LOCATION_LINE (ASM_INPUT_SOURCE_LOCATION (in_rtx)));
 417 #endif
 418           }
 419         else if (i == 5 && NOTE_P (in_rtx))
 420           {
 421             /* This field is only used for NOTE_INSN_DELETED_LABEL, and
 422                other times often contains garbage from INSN->NOTE death.  */
 423             if (NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_LABEL
 424                 || NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_DEBUG_LABEL)
 425               fprintf (outfile, " %d",  XINT (in_rtx, i));
 426           }
 427 #if !defined(GENERATOR_FILE) && NUM_UNSPECV_VALUES > 0
 428         else if (i == 1
 429                  && GET_CODE (in_rtx) == UNSPEC_VOLATILE
 430                  && XINT (in_rtx, 1) >= 0
 431                  && XINT (in_rtx, 1) < NUM_UNSPECV_VALUES)
 432           fprintf (outfile, " %s", unspecv_strings[XINT (in_rtx, 1)]);
 433 #endif
 434 #if !defined(GENERATOR_FILE) && NUM_UNSPEC_VALUES > 0
 435         else if (i == 1
 436                  && (GET_CODE (in_rtx) == UNSPEC
 437                      || GET_CODE (in_rtx) == UNSPEC_VOLATILE)
 438                  && XINT (in_rtx, 1) >= 0
 439                  && XINT (in_rtx, 1) < NUM_UNSPEC_VALUES)
 440           fprintf (outfile, " %s", unspec_strings[XINT (in_rtx, 1)]);
 441 #endif
 442         else
 443           {
 444             int value = XINT (in_rtx, i);
 445             const char *name;
 446
 447 #ifndef GENERATOR_FILE
 448             if (REG_P (in_rtx) && (unsigned) value < FIRST_PSEUDO_REGISTER)
 449               fprintf (outfile, " %d %s", value, reg_names[value]);
 450             else if (REG_P (in_rtx)
 451                      && (unsigned) value <= LAST_VIRTUAL_REGISTER)
 452               {
 453                 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
 454                   fprintf (outfile, " %d virtual-incoming-args", value);
 455                 else if (value == VIRTUAL_STACK_VARS_REGNUM)
 456                   fprintf (outfile, " %d virtual-stack-vars", value);
 457                 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
 458                   fprintf (outfile, " %d virtual-stack-dynamic", value);
 459                 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
 460                   fprintf (outfile, " %d virtual-outgoing-args", value);
 461                 else if (value == VIRTUAL_CFA_REGNUM)
 462                   fprintf (outfile, " %d virtual-cfa", value);
 463                 else if (value == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 464                   fprintf (outfile, " %d virtual-preferred-stack-boundary",
 465                            value);
 466                 else
 467                   fprintf (outfile, " %d virtual-reg-%d", value,
 468                            value-FIRST_VIRTUAL_REGISTER);
 469               }
 470             else
 471 #endif
 472               if (flag_dump_unnumbered
 473                      && (is_insn || NOTE_P (in_rtx)))
 474               fputc ('#', outfile);
 475             else
 476               fprintf (outfile, " %d", value);
 477
 478 #ifndef GENERATOR_FILE
 479             if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
 480               {
 481                 fputs (" [", outfile);
 482                 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
 483                   fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 484                 if (REG_EXPR (in_rtx))
 485                   print_mem_expr (outfile, REG_EXPR (in_rtx));
 486
 487                 if (REG_OFFSET (in_rtx))
 488                   fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 489                            REG_OFFSET (in_rtx));
 490                 fputs (" ]", outfile);
 491               }
 492             if (REG_P (in_rtx) && REGNO (in_rtx) != ORIGINAL_REGNO (in_rtx))
 493               fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
 494 #endif
 495
 496             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 497                 && XINT (in_rtx, i) >= 0
 498                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 499               fprintf (outfile, " {%s}", name);
 500             sawclose = 0;
 501           }
 502         break;
 503
 504       /* Print NOTE_INSN names rather than integer codes.  */
 505
 506       case 'n':
 507         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 508         sawclose = 0;
 509         break;
 510
 511       case 'u':
 512         if (XEXP (in_rtx, i) != NULL)
 513           {
 514             rtx sub = XEXP (in_rtx, i);
 515             enum rtx_code subc = GET_CODE (sub);
 516
 517             if (GET_CODE (in_rtx) == LABEL_REF)
 518               {
 519                 if (subc == NOTE
 520                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 521                   {
 522                     if (flag_dump_unnumbered)
 523                       fprintf (outfile, " [# deleted]");
 524                     else
 525                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 526                     sawclose = 0;
 527                     break;
 528                   }
 529
 530                 if (subc != CODE_LABEL)
 531                   goto do_e;
 532               }
 533
 534             if (flag_dump_unnumbered
 535                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 536                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 537                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 538               fputs (" #", outfile);
 539             else
 540               fprintf (outfile, " %d", INSN_UID (sub));
 541           }
 542         else
 543           fputs (" 0", outfile);
 544         sawclose = 0;
 545         break;
 546
 547       case 't':
 548 #ifndef GENERATOR_FILE
 549         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 550           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 551         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_PARAMETER_REF)
 552           print_mem_expr (outfile, DEBUG_PARAMETER_REF_DECL (in_rtx));
 553         else
 554           dump_addr (outfile, " ", XTREE (in_rtx, i));
 555 #endif
 556         break;
 557
 558       case '*':
 559         fputs (" Unknown", outfile);
 560         sawclose = 0;
 561         break;
 562
 563       case 'B':
 564 #ifndef GENERATOR_FILE
 565         if (XBBDEF (in_rtx, i))
 566           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 567 #endif
 568         break;
 569
 570       default:
 571         gcc_unreachable ();
 572       }
 573
 574   switch (GET_CODE (in_rtx))
 575     {
 576 #ifndef GENERATOR_FILE
 577     case MEM:
 578       if (__builtin_expect (final_insns_dump_p, false))
 579         fprintf (outfile, " [");
 580       else
 581         fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 582                  (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 583
 584       if (MEM_EXPR (in_rtx))
 585         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 586       else
 587         fputc (' ', outfile);
 588
 589       if (MEM_OFFSET_KNOWN_P (in_rtx))
 590         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC, MEM_OFFSET (in_rtx));
 591
 592       if (MEM_SIZE_KNOWN_P (in_rtx))
 593         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC, MEM_SIZE (in_rtx));
 594
 595       if (MEM_ALIGN (in_rtx) != 1)
 596         fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
 597
 598       if (!ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (in_rtx)))
 599         fprintf (outfile, " AS%u", MEM_ADDR_SPACE (in_rtx));
 600
 601       fputc (']', outfile);
 602       break;
 603
 604     case CONST_DOUBLE:
 605       if (FLOAT_MODE_P (GET_MODE (in_rtx)))
 606         {
 607           char s[60];
 608
 609           real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 610                            sizeof (s), 0, 1);
 611           fprintf (outfile, " %s", s);
 612
 613           real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 614                                sizeof (s), 0, 1);
 615           fprintf (outfile, " [%s]", s);
 616         }
 617       break;
 618
 619     case CONST_WIDE_INT:
 620       fprintf (outfile, " ");
 621       cwi_output_hex (outfile, in_rtx);
 622       break;
 623 #endif
 624
 625     case CODE_LABEL:
 626       fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
 627       switch (LABEL_KIND (in_rtx))
 628         {
 629           case LABEL_NORMAL: break;
 630           case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
 631           case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
 632           case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
 633           default: gcc_unreachable ();
 634         }
 635       break;
 636
 637     default:
 638       break;
 639     }
 640
 641   fputc (')', outfile);
 642   sawclose = 1;
 643 }
 644
 645 /* Print an rtx on the current line of FILE.  Initially indent IND
 646    characters.  */
 647
 648 void
 649 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 650 {
 651   int oldsaw = sawclose;
 652   int oldindent = indent;
 653
 654   sawclose = 0;
 655   indent = ind;
 656   outfile = outf;
 657   print_rtx (x);
 658   sawclose = oldsaw;
 659   indent = oldindent;
 660 }
 661
 662 /* Call this function from the debugger to see what X looks like.  */
 663
 664 DEBUG_FUNCTION void
 665 debug_rtx (const_rtx x)
 666 {
 667   outfile = stderr;
 668   sawclose = 0;
 669   print_rtx (x);
 670   fprintf (stderr, "\n");
 671 }
 672
 673 /* Dump rtx REF.  */
 674
 675 DEBUG_FUNCTION void
 676 debug (const rtx_def &ref)
 677 {
 678   debug_rtx (&ref);
 679 }
 680
 681 DEBUG_FUNCTION void
 682 debug (const rtx_def *ptr)
 683 {
 684   if (ptr)
 685     debug (*ptr);
 686   else
 687     fprintf (stderr, "<nil>\n");
 688 }
 689
 690 /* Count of rtx's to print with debug_rtx_list.
 691    This global exists because gdb user defined commands have no arguments.  */
 692
 693 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 694
 695 /* Call this function to print list from X on.
 696
 697    N is a count of the rtx's to print. Positive values print from the specified
 698    rtx on.  Negative values print a window around the rtx.
 699    EG: -5 prints 2 rtx's on either side (in addition to the specified rtx).  */
 700
 701 DEBUG_FUNCTION void
 702 debug_rtx_list (const_rtx x, int n)
 703 {
 704   int i,count;
 705   const_rtx insn;
 706
 707   count = n == 0 ? 1 : n < 0 ? -n : n;
 708
 709   /* If we are printing a window, back up to the start.  */
 710
 711   if (n < 0)
 712     for (i = count / 2; i > 0; i--)
 713       {
 714         if (PREV_INSN (x) == 0)
 715           break;
 716         x = PREV_INSN (x);
 717       }
 718
 719   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 720     {
 721       debug_rtx (insn);
 722       fprintf (stderr, "\n");
 723     }
 724 }
 725
 726 /* Call this function to print an rtx list from START to END inclusive.  */
 727
 728 DEBUG_FUNCTION void
 729 debug_rtx_range (const_rtx start, const_rtx end)
 730 {
 731   while (1)
 732     {
 733       debug_rtx (start);
 734       fprintf (stderr, "\n");
 735       if (!start || start == end)
 736         break;
 737       start = NEXT_INSN (start);
 738     }
 739 }
 740
 741 /* Call this function to search an rtx list to find one with insn uid UID,
 742    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 743    The found insn is returned to enable further debugging analysis.  */
 744
 745 DEBUG_FUNCTION const_rtx
 746 debug_rtx_find (const_rtx x, int uid)
 747 {
 748   while (x != 0 && INSN_UID (x) != uid)
 749     x = NEXT_INSN (x);
 750   if (x != 0)
 751     {
 752       debug_rtx_list (x, debug_rtx_count);
 753       return x;
 754     }
 755   else
 756     {
 757       fprintf (stderr, "insn uid %d not found\n", uid);
 758       return 0;
 759     }
 760 }
 761
 762 /* External entry point for printing a chain of insns
 763    starting with RTX_FIRST onto file OUTF.
 764    A blank line separates insns.
 765
 766    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 767
 768 void
 769 print_rtl (FILE *outf, const_rtx rtx_first)
 770 {
 771   const_rtx tmp_rtx;
 772
 773   outfile = outf;
 774   sawclose = 0;
 775
 776   if (rtx_first == 0)
 777     {
 778       fputs (print_rtx_head, outf);
 779       fputs ("(nil)\n", outf);
 780     }
 781   else
 782     switch (GET_CODE (rtx_first))
 783       {
 784       case INSN:
 785       case JUMP_INSN:
 786       case CALL_INSN:
 787       case NOTE:
 788       case CODE_LABEL:
 789       case JUMP_TABLE_DATA:
 790       case BARRIER:
 791         for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
 792           {
 793             fputs (print_rtx_head, outfile);
 794             print_rtx (tmp_rtx);
 795             fprintf (outfile, "\n");
 796           }
 797         break;
 798
 799       default:
 800         fputs (print_rtx_head, outfile);
 801         print_rtx (rtx_first);
 802       }
 803 }
 804
 805 /* Like print_rtx, except specify a file.  */
 806 /* Return nonzero if we actually printed anything.  */
 807
 808 int
 809 print_rtl_single (FILE *outf, const_rtx x)
 810 {
 811   return print_rtl_single_with_indent (outf, x, 0);
 812 }
 813
 814 /* Like print_rtl_single, except specify a file and indentation.  */
 815
 816 int
 817 print_rtl_single_with_indent (FILE *outf, const_rtx x, int ind)
 818 {
 819   int old_indent = indent;
 820   char *s_indent = (char *) alloca ((size_t) ind + 1);
 821   memset ((void *) s_indent, ' ', (size_t) ind);
 822   s_indent[ind] = '\0';
 823
 824   indent = ind;
 825   outfile = outf;
 826   sawclose = 0;
 827   fputs (s_indent, outfile);
 828   fputs (print_rtx_head, outfile);
 829   print_rtx (x);
 830   putc ('\n', outf);
 831   indent = old_indent;
 832   return 1;
 833 }
 834
 835
 836 /* Like print_rtl except without all the detail; for example,
 837    if RTX is a CONST_INT then print in decimal format.  */
 838
 839 void
 840 print_simple_rtl (FILE *outf, const_rtx x)
 841 {
 842   flag_simple = 1;
 843   print_rtl (outf, x);
 844   flag_simple = 0;
 845 }