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 #include "dwarf2out.h"
  47 #endif
  48
  49 static FILE *outfile;
  50
  51 static int sawclose = 0;
  52
  53 static int indent;
  54
  55 static void print_rtx (const_rtx);
  56
  57 /* String printed at beginning of each RTL when it is dumped.
  58    This string is set to ASM_COMMENT_START when the RTL is dumped in
  59    the assembly output file.  */
  60 const char *print_rtx_head = "";
  61
  62 #ifdef GENERATOR_FILE
  63 /* These are defined from the .opt file when not used in generator
  64    programs.  */
  65
  66 /* Nonzero means suppress output of instruction numbers
  67    in debugging dumps.
  68    This must be defined here so that programs like gencodes can be linked.  */
  69 int flag_dump_unnumbered = 0;
  70
  71 /* Nonzero means suppress output of instruction numbers for previous
  72    and next insns in debugging dumps.
  73    This must be defined here so that programs like gencodes can be linked.  */
  74 int flag_dump_unnumbered_links = 0;
  75 #endif
  76
  77 /* Nonzero means use simplified format without flags, modes, etc.  */
  78 int flag_simple = 0;
  79
  80 /* Nonzero if we are dumping graphical description.  */
  81 int dump_for_graph;
  82
  83 #ifndef GENERATOR_FILE
  84 void
  85 print_mem_expr (FILE *outfile, const_tree expr)
  86 {
  87   fputc (' ', outfile);
  88   print_generic_expr (outfile, CONST_CAST_TREE (expr), dump_flags);
  89 }
  90 #endif
  91
  92 /* Print IN_RTX onto OUTFILE.  This is the recursive part of printing.  */
  93
  94 static void
  95 print_rtx (const_rtx in_rtx)
  96 {
  97   int i = 0;
  98   int j;
  99   const char *format_ptr;
 100   int is_insn;
 101
 102   if (sawclose)
 103     {
 104       if (flag_simple)
 105         fputc (' ', outfile);
 106       else
 107         fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 108       sawclose = 0;
 109     }
 110
 111   if (in_rtx == 0)
 112     {
 113       fputs ("(nil)", outfile);
 114       sawclose = 1;
 115       return;
 116     }
 117   else if (GET_CODE (in_rtx) > NUM_RTX_CODE)
 118     {
 119        fprintf (outfile, "(??? bad code %d\n%s%*s)", GET_CODE (in_rtx),
 120                 print_rtx_head, indent * 2, "");
 121        sawclose = 1;
 122        return;
 123     }
 124
 125   is_insn = INSN_P (in_rtx);
 126
 127   /* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
 128      in separate nodes and therefore have to handle them special here.  */
 129   if (dump_for_graph
 130       && (is_insn || NOTE_P (in_rtx)
 131           || LABEL_P (in_rtx) || BARRIER_P (in_rtx)))
 132     {
 133       i = 3;
 134       indent = 0;
 135     }
 136   else
 137     {
 138       /* Print name of expression code.  */
 139       if (flag_simple && CONST_INT_P (in_rtx))
 140         fputc ('(', outfile);
 141       else
 142         fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
 143
 144       if (! flag_simple)
 145         {
 146           if (RTX_FLAG (in_rtx, in_struct))
 147             fputs ("/s", outfile);
 148
 149           if (RTX_FLAG (in_rtx, volatil))
 150             fputs ("/v", outfile);
 151
 152           if (RTX_FLAG (in_rtx, unchanging))
 153             fputs ("/u", outfile);
 154
 155           if (RTX_FLAG (in_rtx, frame_related))
 156             fputs ("/f", outfile);
 157
 158           if (RTX_FLAG (in_rtx, jump))
 159             fputs ("/j", outfile);
 160
 161           if (RTX_FLAG (in_rtx, call))
 162             fputs ("/c", outfile);
 163
 164           if (RTX_FLAG (in_rtx, return_val))
 165             fputs ("/i", outfile);
 166
 167           /* Print REG_NOTE names for EXPR_LIST and INSN_LIST.  */
 168           if ((GET_CODE (in_rtx) == EXPR_LIST
 169                || GET_CODE (in_rtx) == INSN_LIST)
 170               && (int)GET_MODE (in_rtx) < REG_NOTE_MAX)
 171             fprintf (outfile, ":%s",
 172                      GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
 173
 174           /* For other rtl, print the mode if it's not VOID.  */
 175           else if (GET_MODE (in_rtx) != VOIDmode)
 176             fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
 177
 178 #ifndef GENERATOR_FILE
 179           if (GET_CODE (in_rtx) == VAR_LOCATION)
 180             {
 181               if (TREE_CODE (PAT_VAR_LOCATION_DECL (in_rtx)) == STRING_CST)
 182                 fputs (" <debug string placeholder>", outfile);
 183               else
 184                 print_mem_expr (outfile, PAT_VAR_LOCATION_DECL (in_rtx));
 185               fputc (' ', outfile);
 186               print_rtx (PAT_VAR_LOCATION_LOC (in_rtx));
 187               if (PAT_VAR_LOCATION_STATUS (in_rtx)
 188                   == VAR_INIT_STATUS_UNINITIALIZED)
 189                 fprintf (outfile, " [uninit]");
 190               sawclose = 1;
 191               i = GET_RTX_LENGTH (VAR_LOCATION);
 192             }
 193 #endif
 194         }
 195     }
 196
 197 #ifndef GENERATOR_FILE
 198   if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
 199     i = 5;
 200 #endif
 201
 202   /* Get the format string and skip the first elements if we have handled
 203      them already.  */
 204   format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
 205   for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
 206     switch (*format_ptr++)
 207       {
 208         const char *str;
 209
 210       case 'T':
 211         str = XTMPL (in_rtx, i);
 212         goto string;
 213
 214       case 'S':
 215       case 's':
 216         str = XSTR (in_rtx, i);
 217       string:
 218
 219         if (str == 0)
 220           fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
 221         else
 222           {
 223             if (dump_for_graph)
 224               fprintf (outfile, " (\\\"%s\\\")", str);
 225             else
 226               fprintf (outfile, " (\"%s\")", str);
 227           }
 228         sawclose = 1;
 229         break;
 230
 231         /* 0 indicates a field for internal use that should not be printed.
 232            An exception is the third field of a NOTE, where it indicates
 233            that the field has several different valid contents.  */
 234       case '0':
 235         if (i == 1 && REG_P (in_rtx))
 236           {
 237             if (REGNO (in_rtx) != ORIGINAL_REGNO (in_rtx))
 238               fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
 239           }
 240 #ifndef GENERATOR_FILE
 241         else if (i == 1 && GET_CODE (in_rtx) == SYMBOL_REF)
 242           {
 243             int flags = SYMBOL_REF_FLAGS (in_rtx);
 244             if (flags)
 245               fprintf (outfile, " [flags %#x]", flags);
 246           }
 247         else if (i == 2 && GET_CODE (in_rtx) == SYMBOL_REF)
 248           {
 249             tree decl = SYMBOL_REF_DECL (in_rtx);
 250             if (decl)
 251               print_node_brief (outfile, "", decl, dump_flags);
 252           }
 253 #endif
 254         else if (i == 4 && NOTE_P (in_rtx))
 255           {
 256             switch (NOTE_KIND (in_rtx))
 257               {
 258               case NOTE_INSN_EH_REGION_BEG:
 259               case NOTE_INSN_EH_REGION_END:
 260                 if (flag_dump_unnumbered)
 261                   fprintf (outfile, " #");
 262                 else
 263                   fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
 264                 sawclose = 1;
 265                 break;
 266
 267               case NOTE_INSN_BLOCK_BEG:
 268               case NOTE_INSN_BLOCK_END:
 269 #ifndef GENERATOR_FILE
 270                 dump_addr (outfile, " ", NOTE_BLOCK (in_rtx));
 271 #endif
 272                 sawclose = 1;
 273                 break;
 274
 275               case NOTE_INSN_BASIC_BLOCK:
 276                 {
 277 #ifndef GENERATOR_FILE
 278                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 279                   if (bb != 0)
 280                     fprintf (outfile, " [bb %d]", bb->index);
 281 #endif
 282                   break;
 283                 }
 284
 285               case NOTE_INSN_DELETED_LABEL:
 286                 {
 287                   const char *label = NOTE_DELETED_LABEL_NAME (in_rtx);
 288                   if (label)
 289                     fprintf (outfile, " (\"%s\")", label);
 290                   else
 291                     fprintf (outfile, " \"\"");
 292                 }
 293                 break;
 294
 295               case NOTE_INSN_SWITCH_TEXT_SECTIONS:
 296                 {
 297 #ifndef GENERATOR_FILE
 298                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 299                   if (bb != 0)
 300                     fprintf (outfile, " [bb %d]", bb->index);
 301 #endif
 302                   break;
 303                 }
 304
 305               case NOTE_INSN_VAR_LOCATION:
 306               case NOTE_INSN_CALL_ARG_LOCATION:
 307 #ifndef GENERATOR_FILE
 308                 fputc (' ', outfile);
 309                 print_rtx (NOTE_VAR_LOCATION (in_rtx));
 310 #endif
 311                 break;
 312
 313               case NOTE_INSN_CFI:
 314 #ifndef GENERATOR_FILE
 315                 fputc ('\n', outfile);
 316                 output_cfi_directive (outfile, NOTE_CFI (in_rtx));
 317                 fputc ('\t', outfile);
 318 #endif
 319                 break;
 320
 321               default:
 322                 break;
 323               }
 324           }
 325         else if (i == 8 && JUMP_P (in_rtx) && JUMP_LABEL (in_rtx) != NULL)
 326           {
 327             /* Output the JUMP_LABEL reference.  */
 328             fprintf (outfile, "\n%s%*s -> ", print_rtx_head, indent * 2, "");
 329             if (GET_CODE (JUMP_LABEL (in_rtx)) == RETURN)
 330               fprintf (outfile, "return");
 331             else
 332               fprintf (outfile, "%d", INSN_UID (JUMP_LABEL (in_rtx)));
 333           }
 334         else if (i == 0 && GET_CODE (in_rtx) == VALUE)
 335           {
 336 #ifndef GENERATOR_FILE
 337             cselib_val *val = CSELIB_VAL_PTR (in_rtx);
 338
 339             fprintf (outfile, " %u:%u", val->uid, val->hash);
 340             dump_addr (outfile, " @", in_rtx);
 341             dump_addr (outfile, "/", (void*)val);
 342 #endif
 343           }
 344         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_EXPR)
 345           {
 346 #ifndef GENERATOR_FILE
 347             fprintf (outfile, " D#%i",
 348                      DEBUG_TEMP_UID (DEBUG_EXPR_TREE_DECL (in_rtx)));
 349 #endif
 350           }
 351         else if (i == 0 && GET_CODE (in_rtx) == ENTRY_VALUE)
 352           {
 353             indent += 2;
 354             if (!sawclose)
 355               fprintf (outfile, " ");
 356             print_rtx (ENTRY_VALUE_EXP (in_rtx));
 357             indent -= 2;
 358           }
 359         break;
 360
 361       case 'e':
 362       do_e:
 363         indent += 2;
 364         if (i == 7 && INSN_P (in_rtx))
 365           /* Put REG_NOTES on their own line.  */
 366           fprintf (outfile, "\n%s%*s",
 367                    print_rtx_head, indent * 2, "");
 368         if (!sawclose)
 369           fprintf (outfile, " ");
 370         print_rtx (XEXP (in_rtx, i));
 371         indent -= 2;
 372         break;
 373
 374       case 'E':
 375       case 'V':
 376         indent += 2;
 377         if (sawclose)
 378           {
 379             fprintf (outfile, "\n%s%*s",
 380                      print_rtx_head, indent * 2, "");
 381             sawclose = 0;
 382           }
 383         fputs (" [", outfile);
 384         if (NULL != XVEC (in_rtx, i))
 385           {
 386             indent += 2;
 387             if (XVECLEN (in_rtx, i))
 388               sawclose = 1;
 389
 390             for (j = 0; j < XVECLEN (in_rtx, i); j++)
 391               print_rtx (XVECEXP (in_rtx, i, j));
 392
 393             indent -= 2;
 394           }
 395         if (sawclose)
 396           fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 397
 398         fputs ("]", outfile);
 399         sawclose = 1;
 400         indent -= 2;
 401         break;
 402
 403       case 'w':
 404         if (! flag_simple)
 405           fprintf (outfile, " ");
 406         fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
 407         if (! flag_simple)
 408           fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
 409                    (unsigned HOST_WIDE_INT) XWINT (in_rtx, i));
 410         break;
 411
 412       case 'i':
 413         if (i == 5 && INSN_P (in_rtx))
 414           {
 415 #ifndef GENERATOR_FILE
 416             /*  Pretty-print insn locators.  Ignore scoping as it is mostly
 417                 redundant with line number information and do not print anything
 418                 when there is no location information available.  */
 419             if (INSN_LOCATOR (in_rtx) && insn_file (in_rtx))
 420               fprintf(outfile, " %s:%i", insn_file (in_rtx), insn_line (in_rtx));
 421 #endif
 422           }
 423         else if (i == 6 && GET_CODE (in_rtx) == ASM_OPERANDS)
 424           {
 425 #ifndef GENERATOR_FILE
 426             fprintf (outfile, " %s:%i",
 427                      locator_file (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)),
 428                      locator_line (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)));
 429 #endif
 430           }
 431         else if (i == 1 && GET_CODE (in_rtx) == ASM_INPUT)
 432           {
 433 #ifndef GENERATOR_FILE
 434             fprintf (outfile, " %s:%i",
 435                      locator_file (ASM_INPUT_SOURCE_LOCATION (in_rtx)),
 436                      locator_line (ASM_INPUT_SOURCE_LOCATION (in_rtx)));
 437 #endif
 438           }
 439         else if (i == 6 && NOTE_P (in_rtx))
 440           {
 441             /* This field is only used for NOTE_INSN_DELETED_LABEL, and
 442                other times often contains garbage from INSN->NOTE death.  */
 443             if (NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_LABEL)
 444               fprintf (outfile, " %d",  XINT (in_rtx, i));
 445           }
 446 #if !defined(GENERATOR_FILE) && NUM_UNSPECV_VALUES > 0
 447         else if (i == 1
 448                  && GET_CODE (in_rtx) == UNSPEC_VOLATILE
 449                  && XINT (in_rtx, 1) >= 0
 450                  && XINT (in_rtx, 1) < NUM_UNSPECV_VALUES)
 451           fprintf (outfile, " %s", unspecv_strings[XINT (in_rtx, 1)]);
 452 #endif
 453 #if !defined(GENERATOR_FILE) && NUM_UNSPEC_VALUES > 0
 454         else if (i == 1
 455                  && (GET_CODE (in_rtx) == UNSPEC
 456                      || GET_CODE (in_rtx) == UNSPEC_VOLATILE)
 457                  && XINT (in_rtx, 1) >= 0
 458                  && XINT (in_rtx, 1) < NUM_UNSPEC_VALUES)
 459           fprintf (outfile, " %s", unspec_strings[XINT (in_rtx, 1)]);
 460 #endif
 461         else
 462           {
 463             int value = XINT (in_rtx, i);
 464             const char *name;
 465
 466 #ifndef GENERATOR_FILE
 467             if (REG_P (in_rtx) && value < FIRST_PSEUDO_REGISTER)
 468               fprintf (outfile, " %d %s", REGNO (in_rtx),
 469                        reg_names[REGNO (in_rtx)]);
 470             else if (REG_P (in_rtx)
 471                      && value <= LAST_VIRTUAL_REGISTER)
 472               {
 473                 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
 474                   fprintf (outfile, " %d virtual-incoming-args", value);
 475                 else if (value == VIRTUAL_STACK_VARS_REGNUM)
 476                   fprintf (outfile, " %d virtual-stack-vars", value);
 477                 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
 478                   fprintf (outfile, " %d virtual-stack-dynamic", value);
 479                 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
 480                   fprintf (outfile, " %d virtual-outgoing-args", value);
 481                 else if (value == VIRTUAL_CFA_REGNUM)
 482                   fprintf (outfile, " %d virtual-cfa", value);
 483                 else if (value == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 484                   fprintf (outfile, " %d virtual-preferred-stack-boundary",
 485                            value);
 486                 else
 487                   fprintf (outfile, " %d virtual-reg-%d", value,
 488                            value-FIRST_VIRTUAL_REGISTER);
 489               }
 490             else
 491 #endif
 492               if (flag_dump_unnumbered
 493                      && (is_insn || NOTE_P (in_rtx)))
 494               fputc ('#', outfile);
 495             else
 496               fprintf (outfile, " %d", value);
 497
 498 #ifndef GENERATOR_FILE
 499             if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
 500               {
 501                 fputs (" [", outfile);
 502                 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
 503                   fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 504                 if (REG_EXPR (in_rtx))
 505                   print_mem_expr (outfile, REG_EXPR (in_rtx));
 506
 507                 if (REG_OFFSET (in_rtx))
 508                   fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 509                            REG_OFFSET (in_rtx));
 510                 fputs (" ]", outfile);
 511               }
 512 #endif
 513
 514             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 515                 && XINT (in_rtx, i) >= 0
 516                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 517               fprintf (outfile, " {%s}", name);
 518             sawclose = 0;
 519           }
 520         break;
 521
 522       /* Print NOTE_INSN names rather than integer codes.  */
 523
 524       case 'n':
 525         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 526         sawclose = 0;
 527         break;
 528
 529       case 'u':
 530         if (XEXP (in_rtx, i) != NULL)
 531           {
 532             rtx sub = XEXP (in_rtx, i);
 533             enum rtx_code subc = GET_CODE (sub);
 534
 535             if (GET_CODE (in_rtx) == LABEL_REF)
 536               {
 537                 if (subc == NOTE
 538                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 539                   {
 540                     if (flag_dump_unnumbered)
 541                       fprintf (outfile, " [# deleted]");
 542                     else
 543                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 544                     sawclose = 0;
 545                     break;
 546                   }
 547
 548                 if (subc != CODE_LABEL)
 549                   goto do_e;
 550               }
 551
 552             if (flag_dump_unnumbered
 553                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 554                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 555                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 556               fputs (" #", outfile);
 557             else
 558               fprintf (outfile, " %d", INSN_UID (sub));
 559           }
 560         else
 561           fputs (" 0", outfile);
 562         sawclose = 0;
 563         break;
 564
 565       case 't':
 566 #ifndef GENERATOR_FILE
 567         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 568           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 569         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_PARAMETER_REF)
 570           print_mem_expr (outfile, DEBUG_PARAMETER_REF_DECL (in_rtx));
 571         else
 572           dump_addr (outfile, " ", XTREE (in_rtx, i));
 573 #endif
 574         break;
 575
 576       case '*':
 577         fputs (" Unknown", outfile);
 578         sawclose = 0;
 579         break;
 580
 581       case 'B':
 582 #ifndef GENERATOR_FILE
 583         if (XBBDEF (in_rtx, i))
 584           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 585 #endif
 586         break;
 587
 588       default:
 589         gcc_unreachable ();
 590       }
 591
 592   switch (GET_CODE (in_rtx))
 593     {
 594 #ifndef GENERATOR_FILE
 595     case MEM:
 596       if (__builtin_expect (final_insns_dump_p, false))
 597         fprintf (outfile, " [");
 598       else
 599         fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 600                  (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 601
 602       if (MEM_EXPR (in_rtx))
 603         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 604
 605       if (MEM_OFFSET_KNOWN_P (in_rtx))
 606         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC, MEM_OFFSET (in_rtx));
 607
 608       if (MEM_SIZE_KNOWN_P (in_rtx))
 609         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC, MEM_SIZE (in_rtx));
 610
 611       if (MEM_ALIGN (in_rtx) != 1)
 612         fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
 613
 614       if (!ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (in_rtx)))
 615         fprintf (outfile, " AS%u", MEM_ADDR_SPACE (in_rtx));
 616
 617       fputc (']', outfile);
 618       break;
 619
 620     case CONST_DOUBLE:
 621       if (FLOAT_MODE_P (GET_MODE (in_rtx)))
 622         {
 623           char s[60];
 624
 625           real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 626                            sizeof (s), 0, 1);
 627           fprintf (outfile, " %s", s);
 628
 629           real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 630                                sizeof (s), 0, 1);
 631           fprintf (outfile, " [%s]", s);
 632         }
 633       break;
 634 #endif
 635
 636     case CODE_LABEL:
 637       fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
 638       switch (LABEL_KIND (in_rtx))
 639         {
 640           case LABEL_NORMAL: break;
 641           case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
 642           case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
 643           case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
 644           default: gcc_unreachable ();
 645         }
 646       break;
 647
 648     default:
 649       break;
 650     }
 651
 652   if (dump_for_graph
 653       && (is_insn || NOTE_P (in_rtx)
 654           || LABEL_P (in_rtx) || BARRIER_P (in_rtx)))
 655     sawclose = 0;
 656   else
 657     {
 658       fputc (')', outfile);
 659       sawclose = 1;
 660     }
 661 }
 662
 663 /* Print an rtx on the current line of FILE.  Initially indent IND
 664    characters.  */
 665
 666 void
 667 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 668 {
 669   int oldsaw = sawclose;
 670   int oldindent = indent;
 671
 672   sawclose = 0;
 673   indent = ind;
 674   outfile = outf;
 675   print_rtx (x);
 676   sawclose = oldsaw;
 677   indent = oldindent;
 678 }
 679
 680 /* Call this function from the debugger to see what X looks like.  */
 681
 682 DEBUG_FUNCTION void
 683 debug_rtx (const_rtx x)
 684 {
 685   outfile = stderr;
 686   sawclose = 0;
 687   print_rtx (x);
 688   fprintf (stderr, "\n");
 689 }
 690
 691 /* Count of rtx's to print with debug_rtx_list.
 692    This global exists because gdb user defined commands have no arguments.  */
 693
 694 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 695
 696 /* Call this function to print list from X on.
 697
 698    N is a count of the rtx's to print. Positive values print from the specified
 699    rtx on.  Negative values print a window around the rtx.
 700    EG: -5 prints 2 rtx's on either side (in addition to the specified rtx).  */
 701
 702 DEBUG_FUNCTION void
 703 debug_rtx_list (const_rtx x, int n)
 704 {
 705   int i,count;
 706   const_rtx insn;
 707
 708   count = n == 0 ? 1 : n < 0 ? -n : n;
 709
 710   /* If we are printing a window, back up to the start.  */
 711
 712   if (n < 0)
 713     for (i = count / 2; i > 0; i--)
 714       {
 715         if (PREV_INSN (x) == 0)
 716           break;
 717         x = PREV_INSN (x);
 718       }
 719
 720   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 721     {
 722       debug_rtx (insn);
 723       fprintf (stderr, "\n");
 724     }
 725 }
 726
 727 /* Call this function to print an rtx list from START to END inclusive.  */
 728
 729 DEBUG_FUNCTION void
 730 debug_rtx_range (const_rtx start, const_rtx end)
 731 {
 732   while (1)
 733     {
 734       debug_rtx (start);
 735       fprintf (stderr, "\n");
 736       if (!start || start == end)
 737         break;
 738       start = NEXT_INSN (start);
 739     }
 740 }
 741
 742 /* Call this function to search an rtx list to find one with insn uid UID,
 743    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 744    The found insn is returned to enable further debugging analysis.  */
 745
 746 DEBUG_FUNCTION const_rtx
 747 debug_rtx_find (const_rtx x, int uid)
 748 {
 749   while (x != 0 && INSN_UID (x) != uid)
 750     x = NEXT_INSN (x);
 751   if (x != 0)
 752     {
 753       debug_rtx_list (x, debug_rtx_count);
 754       return x;
 755     }
 756   else
 757     {
 758       fprintf (stderr, "insn uid %d not found\n", uid);
 759       return 0;
 760     }
 761 }
 762
 763 /* External entry point for printing a chain of insns
 764    starting with RTX_FIRST onto file OUTF.
 765    A blank line separates insns.
 766
 767    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 768
 769 void
 770 print_rtl (FILE *outf, const_rtx rtx_first)
 771 {
 772   const_rtx tmp_rtx;
 773
 774   outfile = outf;
 775   sawclose = 0;
 776
 777   if (rtx_first == 0)
 778     {
 779       fputs (print_rtx_head, outf);
 780       fputs ("(nil)\n", outf);
 781     }
 782   else
 783     switch (GET_CODE (rtx_first))
 784       {
 785       case INSN:
 786       case JUMP_INSN:
 787       case CALL_INSN:
 788       case NOTE:
 789       case CODE_LABEL:
 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   outfile = outf;
 812   sawclose = 0;
 813   fputs (print_rtx_head, outfile);
 814   print_rtx (x);
 815   putc ('\n', outf);
 816   return 1;
 817 }
 818
 819
 820 /* Like print_rtl except without all the detail; for example,
 821    if RTX is a CONST_INT then print in decimal format.  */
 822
 823 void
 824 print_simple_rtl (FILE *outf, const_rtx x)
 825 {
 826   flag_simple = 1;
 827   print_rtl (outf, x);
 828   flag_simple = 0;
 829 }