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 "dumpfile.h"   /* for dump_flags */
  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 (CONST_DOUBLE_AS_FLOAT_P (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               case NOTE_INSN_DELETED_DEBUG_LABEL:
 287                 {
 288                   const char *label = NOTE_DELETED_LABEL_NAME (in_rtx);
 289                   if (label)
 290                     fprintf (outfile, " (\"%s\")", label);
 291                   else
 292                     fprintf (outfile, " \"\"");
 293                 }
 294                 break;
 295
 296               case NOTE_INSN_SWITCH_TEXT_SECTIONS:
 297                 {
 298 #ifndef GENERATOR_FILE
 299                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 300                   if (bb != 0)
 301                     fprintf (outfile, " [bb %d]", bb->index);
 302 #endif
 303                   break;
 304                 }
 305
 306               case NOTE_INSN_VAR_LOCATION:
 307               case NOTE_INSN_CALL_ARG_LOCATION:
 308 #ifndef GENERATOR_FILE
 309                 fputc (' ', outfile);
 310                 print_rtx (NOTE_VAR_LOCATION (in_rtx));
 311 #endif
 312                 break;
 313
 314               case NOTE_INSN_CFI:
 315 #ifndef GENERATOR_FILE
 316                 fputc ('\n', outfile);
 317                 output_cfi_directive (outfile, NOTE_CFI (in_rtx));
 318                 fputc ('\t', outfile);
 319 #endif
 320                 break;
 321
 322               default:
 323                 break;
 324               }
 325           }
 326         else if (i == 8 && JUMP_P (in_rtx) && JUMP_LABEL (in_rtx) != NULL)
 327           {
 328             /* Output the JUMP_LABEL reference.  */
 329             fprintf (outfile, "\n%s%*s -> ", print_rtx_head, indent * 2, "");
 330             if (GET_CODE (JUMP_LABEL (in_rtx)) == RETURN)
 331               fprintf (outfile, "return");
 332             else if (GET_CODE (JUMP_LABEL (in_rtx)) == SIMPLE_RETURN)
 333               fprintf (outfile, "simple_return");
 334             else
 335               fprintf (outfile, "%d", INSN_UID (JUMP_LABEL (in_rtx)));
 336           }
 337         else if (i == 0 && GET_CODE (in_rtx) == VALUE)
 338           {
 339 #ifndef GENERATOR_FILE
 340             cselib_val *val = CSELIB_VAL_PTR (in_rtx);
 341
 342             fprintf (outfile, " %u:%u", val->uid, val->hash);
 343             dump_addr (outfile, " @", in_rtx);
 344             dump_addr (outfile, "/", (void*)val);
 345 #endif
 346           }
 347         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_EXPR)
 348           {
 349 #ifndef GENERATOR_FILE
 350             fprintf (outfile, " D#%i",
 351                      DEBUG_TEMP_UID (DEBUG_EXPR_TREE_DECL (in_rtx)));
 352 #endif
 353           }
 354         else if (i == 0 && GET_CODE (in_rtx) == ENTRY_VALUE)
 355           {
 356             indent += 2;
 357             if (!sawclose)
 358               fprintf (outfile, " ");
 359             print_rtx (ENTRY_VALUE_EXP (in_rtx));
 360             indent -= 2;
 361           }
 362         break;
 363
 364       case 'e':
 365       do_e:
 366         indent += 2;
 367         if (i == 7 && INSN_P (in_rtx))
 368           /* Put REG_NOTES on their own line.  */
 369           fprintf (outfile, "\n%s%*s",
 370                    print_rtx_head, indent * 2, "");
 371         if (!sawclose)
 372           fprintf (outfile, " ");
 373         print_rtx (XEXP (in_rtx, i));
 374         indent -= 2;
 375         break;
 376
 377       case 'E':
 378       case 'V':
 379         indent += 2;
 380         if (sawclose)
 381           {
 382             fprintf (outfile, "\n%s%*s",
 383                      print_rtx_head, indent * 2, "");
 384             sawclose = 0;
 385           }
 386         fputs (" [", outfile);
 387         if (NULL != XVEC (in_rtx, i))
 388           {
 389             indent += 2;
 390             if (XVECLEN (in_rtx, i))
 391               sawclose = 1;
 392
 393             for (j = 0; j < XVECLEN (in_rtx, i); j++)
 394               print_rtx (XVECEXP (in_rtx, i, j));
 395
 396             indent -= 2;
 397           }
 398         if (sawclose)
 399           fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 400
 401         fputs ("]", outfile);
 402         sawclose = 1;
 403         indent -= 2;
 404         break;
 405
 406       case 'w':
 407         if (! flag_simple)
 408           fprintf (outfile, " ");
 409         fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
 410         if (! flag_simple)
 411           fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
 412                    (unsigned HOST_WIDE_INT) XWINT (in_rtx, i));
 413         break;
 414
 415       case 'i':
 416         if (i == 5 && INSN_P (in_rtx))
 417           {
 418 #ifndef GENERATOR_FILE
 419             /*  Pretty-print insn locations.  Ignore scoping as it is mostly
 420                 redundant with line number information and do not print anything
 421                 when there is no location information available.  */
 422             if (INSN_LOCATION (in_rtx) && insn_file (in_rtx))
 423               fprintf(outfile, " %s:%i", insn_file (in_rtx), insn_line (in_rtx));
 424 #endif
 425           }
 426         else if (i == 6 && GET_CODE (in_rtx) == ASM_OPERANDS)
 427           {
 428 #ifndef GENERATOR_FILE
 429             fprintf (outfile, " %s:%i",
 430                      LOCATION_FILE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)),
 431                      LOCATION_LINE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)));
 432 #endif
 433           }
 434         else if (i == 1 && GET_CODE (in_rtx) == ASM_INPUT)
 435           {
 436 #ifndef GENERATOR_FILE
 437             fprintf (outfile, " %s:%i",
 438                      LOCATION_FILE (ASM_INPUT_SOURCE_LOCATION (in_rtx)),
 439                      LOCATION_LINE (ASM_INPUT_SOURCE_LOCATION (in_rtx)));
 440 #endif
 441           }
 442         else if (i == 6 && NOTE_P (in_rtx))
 443           {
 444             /* This field is only used for NOTE_INSN_DELETED_LABEL, and
 445                other times often contains garbage from INSN->NOTE death.  */
 446             if (NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_LABEL
 447                 || NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_DEBUG_LABEL)
 448               fprintf (outfile, " %d",  XINT (in_rtx, i));
 449           }
 450 #if !defined(GENERATOR_FILE) && NUM_UNSPECV_VALUES > 0
 451         else if (i == 1
 452                  && GET_CODE (in_rtx) == UNSPEC_VOLATILE
 453                  && XINT (in_rtx, 1) >= 0
 454                  && XINT (in_rtx, 1) < NUM_UNSPECV_VALUES)
 455           fprintf (outfile, " %s", unspecv_strings[XINT (in_rtx, 1)]);
 456 #endif
 457 #if !defined(GENERATOR_FILE) && NUM_UNSPEC_VALUES > 0
 458         else if (i == 1
 459                  && (GET_CODE (in_rtx) == UNSPEC
 460                      || GET_CODE (in_rtx) == UNSPEC_VOLATILE)
 461                  && XINT (in_rtx, 1) >= 0
 462                  && XINT (in_rtx, 1) < NUM_UNSPEC_VALUES)
 463           fprintf (outfile, " %s", unspec_strings[XINT (in_rtx, 1)]);
 464 #endif
 465         else
 466           {
 467             int value = XINT (in_rtx, i);
 468             const char *name;
 469
 470 #ifndef GENERATOR_FILE
 471             if (REG_P (in_rtx) && (unsigned) value < FIRST_PSEUDO_REGISTER)
 472               fprintf (outfile, " %d %s", value, reg_names[value]);
 473             else if (REG_P (in_rtx)
 474                      && (unsigned) value <= LAST_VIRTUAL_REGISTER)
 475               {
 476                 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
 477                   fprintf (outfile, " %d virtual-incoming-args", value);
 478                 else if (value == VIRTUAL_STACK_VARS_REGNUM)
 479                   fprintf (outfile, " %d virtual-stack-vars", value);
 480                 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
 481                   fprintf (outfile, " %d virtual-stack-dynamic", value);
 482                 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
 483                   fprintf (outfile, " %d virtual-outgoing-args", value);
 484                 else if (value == VIRTUAL_CFA_REGNUM)
 485                   fprintf (outfile, " %d virtual-cfa", value);
 486                 else if (value == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 487                   fprintf (outfile, " %d virtual-preferred-stack-boundary",
 488                            value);
 489                 else
 490                   fprintf (outfile, " %d virtual-reg-%d", value,
 491                            value-FIRST_VIRTUAL_REGISTER);
 492               }
 493             else
 494 #endif
 495               if (flag_dump_unnumbered
 496                      && (is_insn || NOTE_P (in_rtx)))
 497               fputc ('#', outfile);
 498             else
 499               fprintf (outfile, " %d", value);
 500
 501 #ifndef GENERATOR_FILE
 502             if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
 503               {
 504                 fputs (" [", outfile);
 505                 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
 506                   fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 507                 if (REG_EXPR (in_rtx))
 508                   print_mem_expr (outfile, REG_EXPR (in_rtx));
 509
 510                 if (REG_OFFSET (in_rtx))
 511                   fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 512                            REG_OFFSET (in_rtx));
 513                 fputs (" ]", outfile);
 514               }
 515 #endif
 516
 517             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 518                 && XINT (in_rtx, i) >= 0
 519                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 520               fprintf (outfile, " {%s}", name);
 521             sawclose = 0;
 522           }
 523         break;
 524
 525       /* Print NOTE_INSN names rather than integer codes.  */
 526
 527       case 'n':
 528         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 529         sawclose = 0;
 530         break;
 531
 532       case 'u':
 533         if (XEXP (in_rtx, i) != NULL)
 534           {
 535             rtx sub = XEXP (in_rtx, i);
 536             enum rtx_code subc = GET_CODE (sub);
 537
 538             if (GET_CODE (in_rtx) == LABEL_REF)
 539               {
 540                 if (subc == NOTE
 541                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 542                   {
 543                     if (flag_dump_unnumbered)
 544                       fprintf (outfile, " [# deleted]");
 545                     else
 546                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 547                     sawclose = 0;
 548                     break;
 549                   }
 550
 551                 if (subc != CODE_LABEL)
 552                   goto do_e;
 553               }
 554
 555             if (flag_dump_unnumbered
 556                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 557                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 558                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 559               fputs (" #", outfile);
 560             else
 561               fprintf (outfile, " %d", INSN_UID (sub));
 562           }
 563         else
 564           fputs (" 0", outfile);
 565         sawclose = 0;
 566         break;
 567
 568       case 't':
 569 #ifndef GENERATOR_FILE
 570         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 571           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 572         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_PARAMETER_REF)
 573           print_mem_expr (outfile, DEBUG_PARAMETER_REF_DECL (in_rtx));
 574         else
 575           dump_addr (outfile, " ", XTREE (in_rtx, i));
 576 #endif
 577         break;
 578
 579       case '*':
 580         fputs (" Unknown", outfile);
 581         sawclose = 0;
 582         break;
 583
 584       case 'B':
 585 #ifndef GENERATOR_FILE
 586         if (XBBDEF (in_rtx, i))
 587           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 588 #endif
 589         break;
 590
 591       default:
 592         gcc_unreachable ();
 593       }
 594
 595   switch (GET_CODE (in_rtx))
 596     {
 597 #ifndef GENERATOR_FILE
 598     case MEM:
 599       if (__builtin_expect (final_insns_dump_p, false))
 600         fprintf (outfile, " [");
 601       else
 602         fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 603                  (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 604
 605       if (MEM_EXPR (in_rtx))
 606         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 607
 608       if (MEM_OFFSET_KNOWN_P (in_rtx))
 609         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC, MEM_OFFSET (in_rtx));
 610
 611       if (MEM_SIZE_KNOWN_P (in_rtx))
 612         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC, MEM_SIZE (in_rtx));
 613
 614       if (MEM_ALIGN (in_rtx) != 1)
 615         fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
 616
 617       if (!ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (in_rtx)))
 618         fprintf (outfile, " AS%u", MEM_ADDR_SPACE (in_rtx));
 619
 620       fputc (']', outfile);
 621       break;
 622
 623     case CONST_DOUBLE:
 624       if (FLOAT_MODE_P (GET_MODE (in_rtx)))
 625         {
 626           char s[60];
 627
 628           real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 629                            sizeof (s), 0, 1);
 630           fprintf (outfile, " %s", s);
 631
 632           real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 633                                sizeof (s), 0, 1);
 634           fprintf (outfile, " [%s]", s);
 635         }
 636       break;
 637 #endif
 638
 639     case CODE_LABEL:
 640       fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
 641       switch (LABEL_KIND (in_rtx))
 642         {
 643           case LABEL_NORMAL: break;
 644           case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
 645           case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
 646           case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
 647           default: gcc_unreachable ();
 648         }
 649       break;
 650
 651     default:
 652       break;
 653     }
 654
 655   if (dump_for_graph
 656       && (is_insn || NOTE_P (in_rtx)
 657           || LABEL_P (in_rtx) || BARRIER_P (in_rtx)))
 658     sawclose = 0;
 659   else
 660     {
 661       fputc (')', outfile);
 662       sawclose = 1;
 663     }
 664 }
 665
 666 /* Print an rtx on the current line of FILE.  Initially indent IND
 667    characters.  */
 668
 669 void
 670 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 671 {
 672   int oldsaw = sawclose;
 673   int oldindent = indent;
 674
 675   sawclose = 0;
 676   indent = ind;
 677   outfile = outf;
 678   print_rtx (x);
 679   sawclose = oldsaw;
 680   indent = oldindent;
 681 }
 682
 683 /* Call this function from the debugger to see what X looks like.  */
 684
 685 DEBUG_FUNCTION void
 686 debug_rtx (const_rtx x)
 687 {
 688   outfile = stderr;
 689   sawclose = 0;
 690   print_rtx (x);
 691   fprintf (stderr, "\n");
 692 }
 693
 694 /* Count of rtx's to print with debug_rtx_list.
 695    This global exists because gdb user defined commands have no arguments.  */
 696
 697 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 698
 699 /* Call this function to print list from X on.
 700
 701    N is a count of the rtx's to print. Positive values print from the specified
 702    rtx on.  Negative values print a window around the rtx.
 703    EG: -5 prints 2 rtx's on either side (in addition to the specified rtx).  */
 704
 705 DEBUG_FUNCTION void
 706 debug_rtx_list (const_rtx x, int n)
 707 {
 708   int i,count;
 709   const_rtx insn;
 710
 711   count = n == 0 ? 1 : n < 0 ? -n : n;
 712
 713   /* If we are printing a window, back up to the start.  */
 714
 715   if (n < 0)
 716     for (i = count / 2; i > 0; i--)
 717       {
 718         if (PREV_INSN (x) == 0)
 719           break;
 720         x = PREV_INSN (x);
 721       }
 722
 723   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 724     {
 725       debug_rtx (insn);
 726       fprintf (stderr, "\n");
 727     }
 728 }
 729
 730 /* Call this function to print an rtx list from START to END inclusive.  */
 731
 732 DEBUG_FUNCTION void
 733 debug_rtx_range (const_rtx start, const_rtx end)
 734 {
 735   while (1)
 736     {
 737       debug_rtx (start);
 738       fprintf (stderr, "\n");
 739       if (!start || start == end)
 740         break;
 741       start = NEXT_INSN (start);
 742     }
 743 }
 744
 745 /* Call this function to search an rtx list to find one with insn uid UID,
 746    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 747    The found insn is returned to enable further debugging analysis.  */
 748
 749 DEBUG_FUNCTION const_rtx
 750 debug_rtx_find (const_rtx x, int uid)
 751 {
 752   while (x != 0 && INSN_UID (x) != uid)
 753     x = NEXT_INSN (x);
 754   if (x != 0)
 755     {
 756       debug_rtx_list (x, debug_rtx_count);
 757       return x;
 758     }
 759   else
 760     {
 761       fprintf (stderr, "insn uid %d not found\n", uid);
 762       return 0;
 763     }
 764 }
 765
 766 /* External entry point for printing a chain of insns
 767    starting with RTX_FIRST onto file OUTF.
 768    A blank line separates insns.
 769
 770    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 771
 772 void
 773 print_rtl (FILE *outf, const_rtx rtx_first)
 774 {
 775   const_rtx tmp_rtx;
 776
 777   outfile = outf;
 778   sawclose = 0;
 779
 780   if (rtx_first == 0)
 781     {
 782       fputs (print_rtx_head, outf);
 783       fputs ("(nil)\n", outf);
 784     }
 785   else
 786     switch (GET_CODE (rtx_first))
 787       {
 788       case INSN:
 789       case JUMP_INSN:
 790       case CALL_INSN:
 791       case NOTE:
 792       case CODE_LABEL:
 793       case BARRIER:
 794         for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
 795           {
 796             fputs (print_rtx_head, outfile);
 797             print_rtx (tmp_rtx);
 798             fprintf (outfile, "\n");
 799           }
 800         break;
 801
 802       default:
 803         fputs (print_rtx_head, outfile);
 804         print_rtx (rtx_first);
 805       }
 806 }
 807
 808 /* Like print_rtx, except specify a file.  */
 809 /* Return nonzero if we actually printed anything.  */
 810
 811 int
 812 print_rtl_single (FILE *outf, const_rtx x)
 813 {
 814   return print_rtl_single_with_indent (outf, x, 0);
 815 }
 816
 817 /* Like print_rtl_single, except specify a file and indentation.  */
 818
 819 int
 820 print_rtl_single_with_indent (FILE *outf, const_rtx x, int ind)
 821 {
 822   int old_indent = indent;
 823   char *s_indent = (char *) alloca ((size_t) ind + 1);
 824   memset ((void *) s_indent, ' ', (size_t) ind);
 825   s_indent[ind] = '\0';
 826
 827   indent = ind;
 828   outfile = outf;
 829   sawclose = 0;
 830   fputs (s_indent, outfile);
 831   fputs (print_rtx_head, outfile);
 832   print_rtx (x);
 833   putc ('\n', outf);
 834   indent = old_indent;
 835   return 1;
 836 }
 837
 838
 839 /* Like print_rtl except without all the detail; for example,
 840    if RTX is a CONST_INT then print in decimal format.  */
 841
 842 void
 843 print_simple_rtl (FILE *outf, const_rtx x)
 844 {
 845   flag_simple = 1;
 846   print_rtl (outf, x);
 847   flag_simple = 0;
 848 }