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           /* Output the JUMP_LABEL reference.  */
 327           fprintf (outfile, "\n%s%*s -> %d", print_rtx_head, indent * 2, "",
 328                    INSN_UID (JUMP_LABEL (in_rtx)));
 329         else if (i == 0 && GET_CODE (in_rtx) == VALUE)
 330           {
 331 #ifndef GENERATOR_FILE
 332             cselib_val *val = CSELIB_VAL_PTR (in_rtx);
 333
 334             fprintf (outfile, " %u:%u", val->uid, val->hash);
 335             dump_addr (outfile, " @", in_rtx);
 336             dump_addr (outfile, "/", (void*)val);
 337 #endif
 338           }
 339         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_EXPR)
 340           {
 341 #ifndef GENERATOR_FILE
 342             fprintf (outfile, " D#%i",
 343                      DEBUG_TEMP_UID (DEBUG_EXPR_TREE_DECL (in_rtx)));
 344 #endif
 345           }
 346         else if (i == 0 && GET_CODE (in_rtx) == ENTRY_VALUE)
 347           {
 348             indent += 2;
 349             if (!sawclose)
 350               fprintf (outfile, " ");
 351             print_rtx (ENTRY_VALUE_EXP (in_rtx));
 352             indent -= 2;
 353           }
 354         break;
 355
 356       case 'e':
 357       do_e:
 358         indent += 2;
 359         if (i == 7 && INSN_P (in_rtx))
 360           /* Put REG_NOTES on their own line.  */
 361           fprintf (outfile, "\n%s%*s",
 362                    print_rtx_head, indent * 2, "");
 363         if (!sawclose)
 364           fprintf (outfile, " ");
 365         print_rtx (XEXP (in_rtx, i));
 366         indent -= 2;
 367         break;
 368
 369       case 'E':
 370       case 'V':
 371         indent += 2;
 372         if (sawclose)
 373           {
 374             fprintf (outfile, "\n%s%*s",
 375                      print_rtx_head, indent * 2, "");
 376             sawclose = 0;
 377           }
 378         fputs (" [", outfile);
 379         if (NULL != XVEC (in_rtx, i))
 380           {
 381             indent += 2;
 382             if (XVECLEN (in_rtx, i))
 383               sawclose = 1;
 384
 385             for (j = 0; j < XVECLEN (in_rtx, i); j++)
 386               print_rtx (XVECEXP (in_rtx, i, j));
 387
 388             indent -= 2;
 389           }
 390         if (sawclose)
 391           fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 392
 393         fputs ("]", outfile);
 394         sawclose = 1;
 395         indent -= 2;
 396         break;
 397
 398       case 'w':
 399         if (! flag_simple)
 400           fprintf (outfile, " ");
 401         fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
 402         if (! flag_simple)
 403           fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
 404                    (unsigned HOST_WIDE_INT) XWINT (in_rtx, i));
 405         break;
 406
 407       case 'i':
 408         if (i == 5 && INSN_P (in_rtx))
 409           {
 410 #ifndef GENERATOR_FILE
 411             /*  Pretty-print insn locators.  Ignore scoping as it is mostly
 412                 redundant with line number information and do not print anything
 413                 when there is no location information available.  */
 414             if (INSN_LOCATOR (in_rtx) && insn_file (in_rtx))
 415               fprintf(outfile, " %s:%i", insn_file (in_rtx), insn_line (in_rtx));
 416 #endif
 417           }
 418         else if (i == 6 && GET_CODE (in_rtx) == ASM_OPERANDS)
 419           {
 420 #ifndef GENERATOR_FILE
 421             fprintf (outfile, " %s:%i",
 422                      locator_file (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)),
 423                      locator_line (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)));
 424 #endif
 425           }
 426         else if (i == 1 && GET_CODE (in_rtx) == ASM_INPUT)
 427           {
 428 #ifndef GENERATOR_FILE
 429             fprintf (outfile, " %s:%i",
 430                      locator_file (ASM_INPUT_SOURCE_LOCATION (in_rtx)),
 431                      locator_line (ASM_INPUT_SOURCE_LOCATION (in_rtx)));
 432 #endif
 433           }
 434         else if (i == 6 && NOTE_P (in_rtx))
 435           {
 436             /* This field is only used for NOTE_INSN_DELETED_LABEL, and
 437                other times often contains garbage from INSN->NOTE death.  */
 438             if (NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_LABEL)
 439               fprintf (outfile, " %d",  XINT (in_rtx, i));
 440           }
 441 #if !defined(GENERATOR_FILE) && NUM_UNSPECV_VALUES > 0
 442         else if (i == 1
 443                  && GET_CODE (in_rtx) == UNSPEC_VOLATILE
 444                  && XINT (in_rtx, 1) >= 0
 445                  && XINT (in_rtx, 1) < NUM_UNSPECV_VALUES)
 446           fprintf (outfile, " %s", unspecv_strings[XINT (in_rtx, 1)]);
 447 #endif
 448 #if !defined(GENERATOR_FILE) && NUM_UNSPEC_VALUES > 0
 449         else if (i == 1
 450                  && (GET_CODE (in_rtx) == UNSPEC
 451                      || GET_CODE (in_rtx) == UNSPEC_VOLATILE)
 452                  && XINT (in_rtx, 1) >= 0
 453                  && XINT (in_rtx, 1) < NUM_UNSPEC_VALUES)
 454           fprintf (outfile, " %s", unspec_strings[XINT (in_rtx, 1)]);
 455 #endif
 456         else
 457           {
 458             int value = XINT (in_rtx, i);
 459             const char *name;
 460
 461 #ifndef GENERATOR_FILE
 462             if (REG_P (in_rtx) && value < FIRST_PSEUDO_REGISTER)
 463               fprintf (outfile, " %d %s", REGNO (in_rtx),
 464                        reg_names[REGNO (in_rtx)]);
 465             else if (REG_P (in_rtx)
 466                      && value <= LAST_VIRTUAL_REGISTER)
 467               {
 468                 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
 469                   fprintf (outfile, " %d virtual-incoming-args", value);
 470                 else if (value == VIRTUAL_STACK_VARS_REGNUM)
 471                   fprintf (outfile, " %d virtual-stack-vars", value);
 472                 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
 473                   fprintf (outfile, " %d virtual-stack-dynamic", value);
 474                 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
 475                   fprintf (outfile, " %d virtual-outgoing-args", value);
 476                 else if (value == VIRTUAL_CFA_REGNUM)
 477                   fprintf (outfile, " %d virtual-cfa", value);
 478                 else if (value == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 479                   fprintf (outfile, " %d virtual-preferred-stack-boundary",
 480                            value);
 481                 else
 482                   fprintf (outfile, " %d virtual-reg-%d", value,
 483                            value-FIRST_VIRTUAL_REGISTER);
 484               }
 485             else
 486 #endif
 487               if (flag_dump_unnumbered
 488                      && (is_insn || NOTE_P (in_rtx)))
 489               fputc ('#', outfile);
 490             else
 491               fprintf (outfile, " %d", value);
 492
 493 #ifndef GENERATOR_FILE
 494             if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
 495               {
 496                 fputs (" [", outfile);
 497                 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
 498                   fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 499                 if (REG_EXPR (in_rtx))
 500                   print_mem_expr (outfile, REG_EXPR (in_rtx));
 501
 502                 if (REG_OFFSET (in_rtx))
 503                   fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 504                            REG_OFFSET (in_rtx));
 505                 fputs (" ]", outfile);
 506               }
 507 #endif
 508
 509             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 510                 && XINT (in_rtx, i) >= 0
 511                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 512               fprintf (outfile, " {%s}", name);
 513             sawclose = 0;
 514           }
 515         break;
 516
 517       /* Print NOTE_INSN names rather than integer codes.  */
 518
 519       case 'n':
 520         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 521         sawclose = 0;
 522         break;
 523
 524       case 'u':
 525         if (XEXP (in_rtx, i) != NULL)
 526           {
 527             rtx sub = XEXP (in_rtx, i);
 528             enum rtx_code subc = GET_CODE (sub);
 529
 530             if (GET_CODE (in_rtx) == LABEL_REF)
 531               {
 532                 if (subc == NOTE
 533                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 534                   {
 535                     if (flag_dump_unnumbered)
 536                       fprintf (outfile, " [# deleted]");
 537                     else
 538                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 539                     sawclose = 0;
 540                     break;
 541                   }
 542
 543                 if (subc != CODE_LABEL)
 544                   goto do_e;
 545               }
 546
 547             if (flag_dump_unnumbered
 548                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 549                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 550                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 551               fputs (" #", outfile);
 552             else
 553               fprintf (outfile, " %d", INSN_UID (sub));
 554           }
 555         else
 556           fputs (" 0", outfile);
 557         sawclose = 0;
 558         break;
 559
 560       case 't':
 561 #ifndef GENERATOR_FILE
 562         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 563           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 564         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_PARAMETER_REF)
 565           print_mem_expr (outfile, DEBUG_PARAMETER_REF_DECL (in_rtx));
 566         else
 567           dump_addr (outfile, " ", XTREE (in_rtx, i));
 568 #endif
 569         break;
 570
 571       case '*':
 572         fputs (" Unknown", outfile);
 573         sawclose = 0;
 574         break;
 575
 576       case 'B':
 577 #ifndef GENERATOR_FILE
 578         if (XBBDEF (in_rtx, i))
 579           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 580 #endif
 581         break;
 582
 583       default:
 584         gcc_unreachable ();
 585       }
 586
 587   switch (GET_CODE (in_rtx))
 588     {
 589 #ifndef GENERATOR_FILE
 590     case MEM:
 591       if (__builtin_expect (final_insns_dump_p, false))
 592         fprintf (outfile, " [");
 593       else
 594         fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 595                  (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 596
 597       if (MEM_EXPR (in_rtx))
 598         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 599
 600       if (MEM_OFFSET (in_rtx))
 601         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 602                  INTVAL (MEM_OFFSET (in_rtx)));
 603
 604       if (MEM_SIZE_KNOWN_P (in_rtx))
 605         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC, MEM_SIZE (in_rtx));
 606
 607       if (MEM_ALIGN (in_rtx) != 1)
 608         fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
 609
 610       if (!ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (in_rtx)))
 611         fprintf (outfile, " AS%u", MEM_ADDR_SPACE (in_rtx));
 612
 613       fputc (']', outfile);
 614       break;
 615
 616     case CONST_DOUBLE:
 617       if (FLOAT_MODE_P (GET_MODE (in_rtx)))
 618         {
 619           char s[60];
 620
 621           real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 622                            sizeof (s), 0, 1);
 623           fprintf (outfile, " %s", s);
 624
 625           real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 626                                sizeof (s), 0, 1);
 627           fprintf (outfile, " [%s]", s);
 628         }
 629       break;
 630 #endif
 631
 632     case CODE_LABEL:
 633       fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
 634       switch (LABEL_KIND (in_rtx))
 635         {
 636           case LABEL_NORMAL: break;
 637           case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
 638           case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
 639           case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
 640           default: gcc_unreachable ();
 641         }
 642       break;
 643
 644     default:
 645       break;
 646     }
 647
 648   if (dump_for_graph
 649       && (is_insn || NOTE_P (in_rtx)
 650           || LABEL_P (in_rtx) || BARRIER_P (in_rtx)))
 651     sawclose = 0;
 652   else
 653     {
 654       fputc (')', outfile);
 655       sawclose = 1;
 656     }
 657 }
 658
 659 /* Print an rtx on the current line of FILE.  Initially indent IND
 660    characters.  */
 661
 662 void
 663 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 664 {
 665   int oldsaw = sawclose;
 666   int oldindent = indent;
 667
 668   sawclose = 0;
 669   indent = ind;
 670   outfile = outf;
 671   print_rtx (x);
 672   sawclose = oldsaw;
 673   indent = oldindent;
 674 }
 675
 676 /* Call this function from the debugger to see what X looks like.  */
 677
 678 DEBUG_FUNCTION void
 679 debug_rtx (const_rtx x)
 680 {
 681   outfile = stderr;
 682   sawclose = 0;
 683   print_rtx (x);
 684   fprintf (stderr, "\n");
 685 }
 686
 687 /* Count of rtx's to print with debug_rtx_list.
 688    This global exists because gdb user defined commands have no arguments.  */
 689
 690 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 691
 692 /* Call this function to print list from X on.
 693
 694    N is a count of the rtx's to print. Positive values print from the specified
 695    rtx on.  Negative values print a window around the rtx.
 696    EG: -5 prints 2 rtx's on either side (in addition to the specified rtx).  */
 697
 698 DEBUG_FUNCTION void
 699 debug_rtx_list (const_rtx x, int n)
 700 {
 701   int i,count;
 702   const_rtx insn;
 703
 704   count = n == 0 ? 1 : n < 0 ? -n : n;
 705
 706   /* If we are printing a window, back up to the start.  */
 707
 708   if (n < 0)
 709     for (i = count / 2; i > 0; i--)
 710       {
 711         if (PREV_INSN (x) == 0)
 712           break;
 713         x = PREV_INSN (x);
 714       }
 715
 716   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 717     {
 718       debug_rtx (insn);
 719       fprintf (stderr, "\n");
 720     }
 721 }
 722
 723 /* Call this function to print an rtx list from START to END inclusive.  */
 724
 725 DEBUG_FUNCTION void
 726 debug_rtx_range (const_rtx start, const_rtx end)
 727 {
 728   while (1)
 729     {
 730       debug_rtx (start);
 731       fprintf (stderr, "\n");
 732       if (!start || start == end)
 733         break;
 734       start = NEXT_INSN (start);
 735     }
 736 }
 737
 738 /* Call this function to search an rtx list to find one with insn uid UID,
 739    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 740    The found insn is returned to enable further debugging analysis.  */
 741
 742 DEBUG_FUNCTION const_rtx
 743 debug_rtx_find (const_rtx x, int uid)
 744 {
 745   while (x != 0 && INSN_UID (x) != uid)
 746     x = NEXT_INSN (x);
 747   if (x != 0)
 748     {
 749       debug_rtx_list (x, debug_rtx_count);
 750       return x;
 751     }
 752   else
 753     {
 754       fprintf (stderr, "insn uid %d not found\n", uid);
 755       return 0;
 756     }
 757 }
 758
 759 /* External entry point for printing a chain of insns
 760    starting with RTX_FIRST onto file OUTF.
 761    A blank line separates insns.
 762
 763    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 764
 765 void
 766 print_rtl (FILE *outf, const_rtx rtx_first)
 767 {
 768   const_rtx tmp_rtx;
 769
 770   outfile = outf;
 771   sawclose = 0;
 772
 773   if (rtx_first == 0)
 774     {
 775       fputs (print_rtx_head, outf);
 776       fputs ("(nil)\n", outf);
 777     }
 778   else
 779     switch (GET_CODE (rtx_first))
 780       {
 781       case INSN:
 782       case JUMP_INSN:
 783       case CALL_INSN:
 784       case NOTE:
 785       case CODE_LABEL:
 786       case BARRIER:
 787         for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
 788           {
 789             fputs (print_rtx_head, outfile);
 790             print_rtx (tmp_rtx);
 791             fprintf (outfile, "\n");
 792           }
 793         break;
 794
 795       default:
 796         fputs (print_rtx_head, outfile);
 797         print_rtx (rtx_first);
 798       }
 799 }
 800
 801 /* Like print_rtx, except specify a file.  */
 802 /* Return nonzero if we actually printed anything.  */
 803
 804 int
 805 print_rtl_single (FILE *outf, const_rtx x)
 806 {
 807   outfile = outf;
 808   sawclose = 0;
 809   fputs (print_rtx_head, outfile);
 810   print_rtx (x);
 811   putc ('\n', outf);
 812   return 1;
 813 }
 814
 815
 816 /* Like print_rtl except without all the detail; for example,
 817    if RTX is a CONST_INT then print in decimal format.  */
 818
 819 void
 820 print_simple_rtl (FILE *outf, const_rtx x)
 821 {
 822   flag_simple = 1;
 823   print_rtl (outf, x);
 824   flag_simple = 0;
 825 }