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   /* Get the format string and skip the first elements if we have handled
 191      them already.  */
 192   format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
 193   for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
 194     switch (*format_ptr++)
 195       {
 196         const char *str;
 197
 198       case 'T':
 199         str = XTMPL (in_rtx, i);
 200         goto string;
 201
 202       case 'S':
 203       case 's':
 204         str = XSTR (in_rtx, i);
 205       string:
 206
 207         if (str == 0)
 208           fputs (" \"\"", outfile);
 209         else
 210           fprintf (outfile, " (\"%s\")", str);
 211         sawclose = 1;
 212         break;
 213
 214         /* 0 indicates a field for internal use that should not be printed.
 215            An exception is the third field of a NOTE, where it indicates
 216            that the field has several different valid contents.  */
 217       case '0':
 218         if (i == 1 && REG_P (in_rtx))
 219           {
 220             if (REGNO (in_rtx) != ORIGINAL_REGNO (in_rtx))
 221               fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
 222           }
 223 #ifndef GENERATOR_FILE
 224         else if (i == 1 && GET_CODE (in_rtx) == SYMBOL_REF)
 225           {
 226             int flags = SYMBOL_REF_FLAGS (in_rtx);
 227             if (flags)
 228               fprintf (outfile, " [flags %#x]", flags);
 229           }
 230         else if (i == 2 && GET_CODE (in_rtx) == SYMBOL_REF)
 231           {
 232             tree decl = SYMBOL_REF_DECL (in_rtx);
 233             if (decl)
 234               print_node_brief (outfile, "", decl, dump_flags);
 235           }
 236 #endif
 237         else if (i == 4 && NOTE_P (in_rtx))
 238           {
 239             switch (NOTE_KIND (in_rtx))
 240               {
 241               case NOTE_INSN_EH_REGION_BEG:
 242               case NOTE_INSN_EH_REGION_END:
 243                 if (flag_dump_unnumbered)
 244                   fprintf (outfile, " #");
 245                 else
 246                   fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
 247                 sawclose = 1;
 248                 break;
 249
 250               case NOTE_INSN_BLOCK_BEG:
 251               case NOTE_INSN_BLOCK_END:
 252 #ifndef GENERATOR_FILE
 253                 dump_addr (outfile, " ", NOTE_BLOCK (in_rtx));
 254 #endif
 255                 sawclose = 1;
 256                 break;
 257
 258               case NOTE_INSN_BASIC_BLOCK:
 259                 {
 260 #ifndef GENERATOR_FILE
 261                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 262                   if (bb != 0)
 263                     fprintf (outfile, " [bb %d]", bb->index);
 264 #endif
 265                   break;
 266                 }
 267
 268               case NOTE_INSN_DELETED_LABEL:
 269               case NOTE_INSN_DELETED_DEBUG_LABEL:
 270                 {
 271                   const char *label = NOTE_DELETED_LABEL_NAME (in_rtx);
 272                   if (label)
 273                     fprintf (outfile, " (\"%s\")", label);
 274                   else
 275                     fprintf (outfile, " \"\"");
 276                 }
 277                 break;
 278
 279               case NOTE_INSN_SWITCH_TEXT_SECTIONS:
 280                 {
 281 #ifndef GENERATOR_FILE
 282                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 283                   if (bb != 0)
 284                     fprintf (outfile, " [bb %d]", bb->index);
 285 #endif
 286                   break;
 287                 }
 288
 289               case NOTE_INSN_VAR_LOCATION:
 290               case NOTE_INSN_CALL_ARG_LOCATION:
 291 #ifndef GENERATOR_FILE
 292                 fputc (' ', outfile);
 293                 print_rtx (NOTE_VAR_LOCATION (in_rtx));
 294 #endif
 295                 break;
 296
 297               case NOTE_INSN_CFI:
 298 #ifndef GENERATOR_FILE
 299                 fputc ('\n', outfile);
 300                 output_cfi_directive (outfile, NOTE_CFI (in_rtx));
 301                 fputc ('\t', outfile);
 302 #endif
 303                 break;
 304
 305               default:
 306                 break;
 307               }
 308           }
 309         else if (i == 8 && JUMP_P (in_rtx) && JUMP_LABEL (in_rtx) != NULL)
 310           {
 311             /* Output the JUMP_LABEL reference.  */
 312             fprintf (outfile, "\n%s%*s -> ", print_rtx_head, indent * 2, "");
 313             if (GET_CODE (JUMP_LABEL (in_rtx)) == RETURN)
 314               fprintf (outfile, "return");
 315             else if (GET_CODE (JUMP_LABEL (in_rtx)) == SIMPLE_RETURN)
 316               fprintf (outfile, "simple_return");
 317             else
 318               fprintf (outfile, "%d", INSN_UID (JUMP_LABEL (in_rtx)));
 319           }
 320         else if (i == 0 && GET_CODE (in_rtx) == VALUE)
 321           {
 322 #ifndef GENERATOR_FILE
 323             cselib_val *val = CSELIB_VAL_PTR (in_rtx);
 324
 325             fprintf (outfile, " %u:%u", val->uid, val->hash);
 326             dump_addr (outfile, " @", in_rtx);
 327             dump_addr (outfile, "/", (void*)val);
 328 #endif
 329           }
 330         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_EXPR)
 331           {
 332 #ifndef GENERATOR_FILE
 333             fprintf (outfile, " D#%i",
 334                      DEBUG_TEMP_UID (DEBUG_EXPR_TREE_DECL (in_rtx)));
 335 #endif
 336           }
 337         else if (i == 0 && GET_CODE (in_rtx) == ENTRY_VALUE)
 338           {
 339             indent += 2;
 340             if (!sawclose)
 341               fprintf (outfile, " ");
 342             print_rtx (ENTRY_VALUE_EXP (in_rtx));
 343             indent -= 2;
 344           }
 345         break;
 346
 347       case 'e':
 348       do_e:
 349         indent += 2;
 350         if (i == 7 && INSN_P (in_rtx))
 351           /* Put REG_NOTES on their own line.  */
 352           fprintf (outfile, "\n%s%*s",
 353                    print_rtx_head, indent * 2, "");
 354         if (!sawclose)
 355           fprintf (outfile, " ");
 356         if (i == 8 && CALL_P (in_rtx))
 357           {
 358             in_call_function_usage = true;
 359             print_rtx (XEXP (in_rtx, i));
 360             in_call_function_usage = false;
 361           }
 362         else
 363           print_rtx (XEXP (in_rtx, i));
 364         indent -= 2;
 365         break;
 366
 367       case 'E':
 368       case 'V':
 369         indent += 2;
 370         if (sawclose)
 371           {
 372             fprintf (outfile, "\n%s%*s",
 373                      print_rtx_head, indent * 2, "");
 374             sawclose = 0;
 375           }
 376         fputs (" [", outfile);
 377         if (NULL != XVEC (in_rtx, i))
 378           {
 379             indent += 2;
 380             if (XVECLEN (in_rtx, i))
 381               sawclose = 1;
 382
 383             for (j = 0; j < XVECLEN (in_rtx, i); j++)
 384               print_rtx (XVECEXP (in_rtx, i, j));
 385
 386             indent -= 2;
 387           }
 388         if (sawclose)
 389           fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 390
 391         fputs ("]", outfile);
 392         sawclose = 1;
 393         indent -= 2;
 394         break;
 395
 396       case 'w':
 397         if (! flag_simple)
 398           fprintf (outfile, " ");
 399         fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
 400         if (! flag_simple)
 401           fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
 402                    (unsigned HOST_WIDE_INT) XWINT (in_rtx, i));
 403         break;
 404
 405       case 'i':
 406         if (i == 5 && INSN_P (in_rtx))
 407           {
 408 #ifndef GENERATOR_FILE
 409             /*  Pretty-print insn locations.  Ignore scoping as it is mostly
 410                 redundant with line number information and do not print anything
 411                 when there is no location information available.  */
 412             if (INSN_LOCATION (in_rtx) && insn_file (in_rtx))
 413               fprintf (outfile, " %s:%i", insn_file (in_rtx),
 414                        insn_line (in_rtx));
 415 #endif
 416           }
 417         else if (i == 6 && GET_CODE (in_rtx) == ASM_OPERANDS)
 418           {
 419 #ifndef GENERATOR_FILE
 420             if (ASM_OPERANDS_SOURCE_LOCATION (in_rtx) != UNKNOWN_LOCATION)
 421               fprintf (outfile, " %s:%i",
 422                        LOCATION_FILE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)),
 423                        LOCATION_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             if (ASM_INPUT_SOURCE_LOCATION (in_rtx) != UNKNOWN_LOCATION)
 430               fprintf (outfile, " %s:%i",
 431                        LOCATION_FILE (ASM_INPUT_SOURCE_LOCATION (in_rtx)),
 432                        LOCATION_LINE (ASM_INPUT_SOURCE_LOCATION (in_rtx)));
 433 #endif
 434           }
 435         else if (i == 6 && NOTE_P (in_rtx))
 436           {
 437             /* This field is only used for NOTE_INSN_DELETED_LABEL, and
 438                other times often contains garbage from INSN->NOTE death.  */
 439             if (NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_LABEL
 440                 || NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_DEBUG_LABEL)
 441               fprintf (outfile, " %d",  XINT (in_rtx, i));
 442           }
 443 #if !defined(GENERATOR_FILE) && NUM_UNSPECV_VALUES > 0
 444         else if (i == 1
 445                  && GET_CODE (in_rtx) == UNSPEC_VOLATILE
 446                  && XINT (in_rtx, 1) >= 0
 447                  && XINT (in_rtx, 1) < NUM_UNSPECV_VALUES)
 448           fprintf (outfile, " %s", unspecv_strings[XINT (in_rtx, 1)]);
 449 #endif
 450 #if !defined(GENERATOR_FILE) && NUM_UNSPEC_VALUES > 0
 451         else if (i == 1
 452                  && (GET_CODE (in_rtx) == UNSPEC
 453                      || GET_CODE (in_rtx) == UNSPEC_VOLATILE)
 454                  && XINT (in_rtx, 1) >= 0
 455                  && XINT (in_rtx, 1) < NUM_UNSPEC_VALUES)
 456           fprintf (outfile, " %s", unspec_strings[XINT (in_rtx, 1)]);
 457 #endif
 458         else
 459           {
 460             int value = XINT (in_rtx, i);
 461             const char *name;
 462
 463 #ifndef GENERATOR_FILE
 464             if (REG_P (in_rtx) && (unsigned) value < FIRST_PSEUDO_REGISTER)
 465               fprintf (outfile, " %d %s", value, reg_names[value]);
 466             else if (REG_P (in_rtx)
 467                      && (unsigned) value <= LAST_VIRTUAL_REGISTER)
 468               {
 469                 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
 470                   fprintf (outfile, " %d virtual-incoming-args", value);
 471                 else if (value == VIRTUAL_STACK_VARS_REGNUM)
 472                   fprintf (outfile, " %d virtual-stack-vars", value);
 473                 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
 474                   fprintf (outfile, " %d virtual-stack-dynamic", value);
 475                 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
 476                   fprintf (outfile, " %d virtual-outgoing-args", value);
 477                 else if (value == VIRTUAL_CFA_REGNUM)
 478                   fprintf (outfile, " %d virtual-cfa", value);
 479                 else if (value == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 480                   fprintf (outfile, " %d virtual-preferred-stack-boundary",
 481                            value);
 482                 else
 483                   fprintf (outfile, " %d virtual-reg-%d", value,
 484                            value-FIRST_VIRTUAL_REGISTER);
 485               }
 486             else
 487 #endif
 488               if (flag_dump_unnumbered
 489                      && (is_insn || NOTE_P (in_rtx)))
 490               fputc ('#', outfile);
 491             else
 492               fprintf (outfile, " %d", value);
 493
 494 #ifndef GENERATOR_FILE
 495             if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
 496               {
 497                 fputs (" [", outfile);
 498                 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
 499                   fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 500                 if (REG_EXPR (in_rtx))
 501                   print_mem_expr (outfile, REG_EXPR (in_rtx));
 502
 503                 if (REG_OFFSET (in_rtx))
 504                   fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 505                            REG_OFFSET (in_rtx));
 506                 fputs (" ]", outfile);
 507               }
 508 #endif
 509
 510             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 511                 && XINT (in_rtx, i) >= 0
 512                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 513               fprintf (outfile, " {%s}", name);
 514             sawclose = 0;
 515           }
 516         break;
 517
 518       /* Print NOTE_INSN names rather than integer codes.  */
 519
 520       case 'n':
 521         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 522         sawclose = 0;
 523         break;
 524
 525       case 'u':
 526         if (XEXP (in_rtx, i) != NULL)
 527           {
 528             rtx sub = XEXP (in_rtx, i);
 529             enum rtx_code subc = GET_CODE (sub);
 530
 531             if (GET_CODE (in_rtx) == LABEL_REF)
 532               {
 533                 if (subc == NOTE
 534                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 535                   {
 536                     if (flag_dump_unnumbered)
 537                       fprintf (outfile, " [# deleted]");
 538                     else
 539                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 540                     sawclose = 0;
 541                     break;
 542                   }
 543
 544                 if (subc != CODE_LABEL)
 545                   goto do_e;
 546               }
 547
 548             if (flag_dump_unnumbered
 549                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 550                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 551                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 552               fputs (" #", outfile);
 553             else
 554               fprintf (outfile, " %d", INSN_UID (sub));
 555           }
 556         else
 557           fputs (" 0", outfile);
 558         sawclose = 0;
 559         break;
 560
 561       case 't':
 562 #ifndef GENERATOR_FILE
 563         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 564           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 565         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_PARAMETER_REF)
 566           print_mem_expr (outfile, DEBUG_PARAMETER_REF_DECL (in_rtx));
 567         else
 568           dump_addr (outfile, " ", XTREE (in_rtx, i));
 569 #endif
 570         break;
 571
 572       case '*':
 573         fputs (" Unknown", outfile);
 574         sawclose = 0;
 575         break;
 576
 577       case 'B':
 578 #ifndef GENERATOR_FILE
 579         if (XBBDEF (in_rtx, i))
 580           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 581 #endif
 582         break;
 583
 584       default:
 585         gcc_unreachable ();
 586       }
 587
 588   switch (GET_CODE (in_rtx))
 589     {
 590 #ifndef GENERATOR_FILE
 591     case MEM:
 592       if (__builtin_expect (final_insns_dump_p, false))
 593         fprintf (outfile, " [");
 594       else
 595         fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 596                  (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 597
 598       if (MEM_EXPR (in_rtx))
 599         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 600       else
 601         fputc (' ', outfile);
 602
 603       if (MEM_OFFSET_KNOWN_P (in_rtx))
 604         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC, MEM_OFFSET (in_rtx));
 605
 606       if (MEM_SIZE_KNOWN_P (in_rtx))
 607         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC, MEM_SIZE (in_rtx));
 608
 609       if (MEM_ALIGN (in_rtx) != 1)
 610         fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
 611
 612       if (!ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (in_rtx)))
 613         fprintf (outfile, " AS%u", MEM_ADDR_SPACE (in_rtx));
 614
 615       fputc (']', outfile);
 616       break;
 617
 618     case CONST_DOUBLE:
 619       if (FLOAT_MODE_P (GET_MODE (in_rtx)))
 620         {
 621           char s[60];
 622
 623           real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 624                            sizeof (s), 0, 1);
 625           fprintf (outfile, " %s", s);
 626
 627           real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 628                                sizeof (s), 0, 1);
 629           fprintf (outfile, " [%s]", s);
 630         }
 631       break;
 632
 633     case CONST_WIDE_INT:
 634       fprintf (outfile, " ");
 635       cwi_output_hex (outfile, in_rtx);
 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   fputc (')', outfile);
 656   sawclose = 1;
 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 /* Dump rtx REF.  */
 688
 689 DEBUG_FUNCTION void
 690 debug (const rtx_def &ref)
 691 {
 692   debug_rtx (&ref);
 693 }
 694
 695 DEBUG_FUNCTION void
 696 debug (const rtx_def *ptr)
 697 {
 698   if (ptr)
 699     debug (*ptr);
 700   else
 701     fprintf (stderr, "<nil>\n");
 702 }
 703
 704 /* Count of rtx's to print with debug_rtx_list.
 705    This global exists because gdb user defined commands have no arguments.  */
 706
 707 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 708
 709 /* Call this function to print list from X on.
 710
 711    N is a count of the rtx's to print. Positive values print from the specified
 712    rtx on.  Negative values print a window around the rtx.
 713    EG: -5 prints 2 rtx's on either side (in addition to the specified rtx).  */
 714
 715 DEBUG_FUNCTION void
 716 debug_rtx_list (const_rtx x, int n)
 717 {
 718   int i,count;
 719   const_rtx insn;
 720
 721   count = n == 0 ? 1 : n < 0 ? -n : n;
 722
 723   /* If we are printing a window, back up to the start.  */
 724
 725   if (n < 0)
 726     for (i = count / 2; i > 0; i--)
 727       {
 728         if (PREV_INSN (x) == 0)
 729           break;
 730         x = PREV_INSN (x);
 731       }
 732
 733   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 734     {
 735       debug_rtx (insn);
 736       fprintf (stderr, "\n");
 737     }
 738 }
 739
 740 /* Call this function to print an rtx list from START to END inclusive.  */
 741
 742 DEBUG_FUNCTION void
 743 debug_rtx_range (const_rtx start, const_rtx end)
 744 {
 745   while (1)
 746     {
 747       debug_rtx (start);
 748       fprintf (stderr, "\n");
 749       if (!start || start == end)
 750         break;
 751       start = NEXT_INSN (start);
 752     }
 753 }
 754
 755 /* Call this function to search an rtx list to find one with insn uid UID,
 756    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 757    The found insn is returned to enable further debugging analysis.  */
 758
 759 DEBUG_FUNCTION const_rtx
 760 debug_rtx_find (const_rtx x, int uid)
 761 {
 762   while (x != 0 && INSN_UID (x) != uid)
 763     x = NEXT_INSN (x);
 764   if (x != 0)
 765     {
 766       debug_rtx_list (x, debug_rtx_count);
 767       return x;
 768     }
 769   else
 770     {
 771       fprintf (stderr, "insn uid %d not found\n", uid);
 772       return 0;
 773     }
 774 }
 775
 776 /* External entry point for printing a chain of insns
 777    starting with RTX_FIRST onto file OUTF.
 778    A blank line separates insns.
 779
 780    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 781
 782 void
 783 print_rtl (FILE *outf, const_rtx rtx_first)
 784 {
 785   const_rtx tmp_rtx;
 786
 787   outfile = outf;
 788   sawclose = 0;
 789
 790   if (rtx_first == 0)
 791     {
 792       fputs (print_rtx_head, outf);
 793       fputs ("(nil)\n", outf);
 794     }
 795   else
 796     switch (GET_CODE (rtx_first))
 797       {
 798       case INSN:
 799       case JUMP_INSN:
 800       case CALL_INSN:
 801       case NOTE:
 802       case CODE_LABEL:
 803       case JUMP_TABLE_DATA:
 804       case BARRIER:
 805         for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
 806           {
 807             fputs (print_rtx_head, outfile);
 808             print_rtx (tmp_rtx);
 809             fprintf (outfile, "\n");
 810           }
 811         break;
 812
 813       default:
 814         fputs (print_rtx_head, outfile);
 815         print_rtx (rtx_first);
 816       }
 817 }
 818
 819 /* Like print_rtx, except specify a file.  */
 820 /* Return nonzero if we actually printed anything.  */
 821
 822 int
 823 print_rtl_single (FILE *outf, const_rtx x)
 824 {
 825   return print_rtl_single_with_indent (outf, x, 0);
 826 }
 827
 828 /* Like print_rtl_single, except specify a file and indentation.  */
 829
 830 int
 831 print_rtl_single_with_indent (FILE *outf, const_rtx x, int ind)
 832 {
 833   int old_indent = indent;
 834   char *s_indent = (char *) alloca ((size_t) ind + 1);
 835   memset ((void *) s_indent, ' ', (size_t) ind);
 836   s_indent[ind] = '\0';
 837
 838   indent = ind;
 839   outfile = outf;
 840   sawclose = 0;
 841   fputs (s_indent, outfile);
 842   fputs (print_rtx_head, outfile);
 843   print_rtx (x);
 844   putc ('\n', outf);
 845   indent = old_indent;
 846   return 1;
 847 }
 848
 849
 850 /* Like print_rtl except without all the detail; for example,
 851    if RTX is a CONST_INT then print in decimal format.  */
 852
 853 void
 854 print_simple_rtl (FILE *outf, const_rtx x)
 855 {
 856   flag_simple = 1;
 857   print_rtl (outf, x);
 858   flag_simple = 0;
 859 }