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             fprintf (outfile, " %s:%i",
 421                      LOCATION_FILE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)),
 422                      LOCATION_LINE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)));
 423 #endif
 424           }
 425         else if (i == 1 && GET_CODE (in_rtx) == ASM_INPUT)
 426           {
 427 #ifndef GENERATOR_FILE
 428             fprintf (outfile, " %s:%i",
 429                      LOCATION_FILE (ASM_INPUT_SOURCE_LOCATION (in_rtx)),
 430                      LOCATION_LINE (ASM_INPUT_SOURCE_LOCATION (in_rtx)));
 431 #endif
 432           }
 433         else if (i == 6 && NOTE_P (in_rtx))
 434           {
 435             /* This field is only used for NOTE_INSN_DELETED_LABEL, and
 436                other times often contains garbage from INSN->NOTE death.  */
 437             if (NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_LABEL
 438                 || NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_DEBUG_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) && (unsigned) value < FIRST_PSEUDO_REGISTER)
 463               fprintf (outfile, " %d %s", value, reg_names[value]);
 464             else if (REG_P (in_rtx)
 465                      && (unsigned) value <= LAST_VIRTUAL_REGISTER)
 466               {
 467                 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
 468                   fprintf (outfile, " %d virtual-incoming-args", value);
 469                 else if (value == VIRTUAL_STACK_VARS_REGNUM)
 470                   fprintf (outfile, " %d virtual-stack-vars", value);
 471                 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
 472                   fprintf (outfile, " %d virtual-stack-dynamic", value);
 473                 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
 474                   fprintf (outfile, " %d virtual-outgoing-args", value);
 475                 else if (value == VIRTUAL_CFA_REGNUM)
 476                   fprintf (outfile, " %d virtual-cfa", value);
 477                 else if (value == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 478                   fprintf (outfile, " %d virtual-preferred-stack-boundary",
 479                            value);
 480                 else
 481                   fprintf (outfile, " %d virtual-reg-%d", value,
 482                            value-FIRST_VIRTUAL_REGISTER);
 483               }
 484             else
 485 #endif
 486               if (flag_dump_unnumbered
 487                      && (is_insn || NOTE_P (in_rtx)))
 488               fputc ('#', outfile);
 489             else
 490               fprintf (outfile, " %d", value);
 491
 492 #ifndef GENERATOR_FILE
 493             if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
 494               {
 495                 fputs (" [", outfile);
 496                 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
 497                   fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 498                 if (REG_EXPR (in_rtx))
 499                   print_mem_expr (outfile, REG_EXPR (in_rtx));
 500
 501                 if (REG_OFFSET (in_rtx))
 502                   fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 503                            REG_OFFSET (in_rtx));
 504                 fputs (" ]", outfile);
 505               }
 506 #endif
 507
 508             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 509                 && XINT (in_rtx, i) >= 0
 510                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 511               fprintf (outfile, " {%s}", name);
 512             sawclose = 0;
 513           }
 514         break;
 515
 516       /* Print NOTE_INSN names rather than integer codes.  */
 517
 518       case 'n':
 519         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 520         sawclose = 0;
 521         break;
 522
 523       case 'u':
 524         if (XEXP (in_rtx, i) != NULL)
 525           {
 526             rtx sub = XEXP (in_rtx, i);
 527             enum rtx_code subc = GET_CODE (sub);
 528
 529             if (GET_CODE (in_rtx) == LABEL_REF)
 530               {
 531                 if (subc == NOTE
 532                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 533                   {
 534                     if (flag_dump_unnumbered)
 535                       fprintf (outfile, " [# deleted]");
 536                     else
 537                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 538                     sawclose = 0;
 539                     break;
 540                   }
 541
 542                 if (subc != CODE_LABEL)
 543                   goto do_e;
 544               }
 545
 546             if (flag_dump_unnumbered
 547                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 548                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 549                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 550               fputs (" #", outfile);
 551             else
 552               fprintf (outfile, " %d", INSN_UID (sub));
 553           }
 554         else
 555           fputs (" 0", outfile);
 556         sawclose = 0;
 557         break;
 558
 559       case 't':
 560 #ifndef GENERATOR_FILE
 561         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 562           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 563         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_PARAMETER_REF)
 564           print_mem_expr (outfile, DEBUG_PARAMETER_REF_DECL (in_rtx));
 565         else
 566           dump_addr (outfile, " ", XTREE (in_rtx, i));
 567 #endif
 568         break;
 569
 570       case '*':
 571         fputs (" Unknown", outfile);
 572         sawclose = 0;
 573         break;
 574
 575       case 'B':
 576 #ifndef GENERATOR_FILE
 577         if (XBBDEF (in_rtx, i))
 578           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 579 #endif
 580         break;
 581
 582       default:
 583         gcc_unreachable ();
 584       }
 585
 586   switch (GET_CODE (in_rtx))
 587     {
 588 #ifndef GENERATOR_FILE
 589     case MEM:
 590       if (__builtin_expect (final_insns_dump_p, false))
 591         fprintf (outfile, " [");
 592       else
 593         fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 594                  (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 595
 596       if (MEM_EXPR (in_rtx))
 597         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 598       else
 599         fputc (' ', outfile);
 600
 601       if (MEM_OFFSET_KNOWN_P (in_rtx))
 602         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC, 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   fputc (')', outfile);
 649   sawclose = 1;
 650 }
 651
 652 /* Print an rtx on the current line of FILE.  Initially indent IND
 653    characters.  */
 654
 655 void
 656 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 657 {
 658   int oldsaw = sawclose;
 659   int oldindent = indent;
 660
 661   sawclose = 0;
 662   indent = ind;
 663   outfile = outf;
 664   print_rtx (x);
 665   sawclose = oldsaw;
 666   indent = oldindent;
 667 }
 668
 669 /* Call this function from the debugger to see what X looks like.  */
 670
 671 DEBUG_FUNCTION void
 672 debug_rtx (const_rtx x)
 673 {
 674   outfile = stderr;
 675   sawclose = 0;
 676   print_rtx (x);
 677   fprintf (stderr, "\n");
 678 }
 679
 680 /* Dump rtx REF.  */
 681
 682 DEBUG_FUNCTION void
 683 debug (const rtx_def &ref)
 684 {
 685   debug_rtx (&ref);
 686 }
 687
 688 DEBUG_FUNCTION void
 689 debug (const rtx_def *ptr)
 690 {
 691   if (ptr)
 692     debug (*ptr);
 693   else
 694     fprintf (stderr, "<nil>\n");
 695 }
 696
 697 /* Count of rtx's to print with debug_rtx_list.
 698    This global exists because gdb user defined commands have no arguments.  */
 699
 700 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 701
 702 /* Call this function to print list from X on.
 703
 704    N is a count of the rtx's to print. Positive values print from the specified
 705    rtx on.  Negative values print a window around the rtx.
 706    EG: -5 prints 2 rtx's on either side (in addition to the specified rtx).  */
 707
 708 DEBUG_FUNCTION void
 709 debug_rtx_list (const_rtx x, int n)
 710 {
 711   int i,count;
 712   const_rtx insn;
 713
 714   count = n == 0 ? 1 : n < 0 ? -n : n;
 715
 716   /* If we are printing a window, back up to the start.  */
 717
 718   if (n < 0)
 719     for (i = count / 2; i > 0; i--)
 720       {
 721         if (PREV_INSN (x) == 0)
 722           break;
 723         x = PREV_INSN (x);
 724       }
 725
 726   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 727     {
 728       debug_rtx (insn);
 729       fprintf (stderr, "\n");
 730     }
 731 }
 732
 733 /* Call this function to print an rtx list from START to END inclusive.  */
 734
 735 DEBUG_FUNCTION void
 736 debug_rtx_range (const_rtx start, const_rtx end)
 737 {
 738   while (1)
 739     {
 740       debug_rtx (start);
 741       fprintf (stderr, "\n");
 742       if (!start || start == end)
 743         break;
 744       start = NEXT_INSN (start);
 745     }
 746 }
 747
 748 /* Call this function to search an rtx list to find one with insn uid UID,
 749    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 750    The found insn is returned to enable further debugging analysis.  */
 751
 752 DEBUG_FUNCTION const_rtx
 753 debug_rtx_find (const_rtx x, int uid)
 754 {
 755   while (x != 0 && INSN_UID (x) != uid)
 756     x = NEXT_INSN (x);
 757   if (x != 0)
 758     {
 759       debug_rtx_list (x, debug_rtx_count);
 760       return x;
 761     }
 762   else
 763     {
 764       fprintf (stderr, "insn uid %d not found\n", uid);
 765       return 0;
 766     }
 767 }
 768
 769 /* External entry point for printing a chain of insns
 770    starting with RTX_FIRST onto file OUTF.
 771    A blank line separates insns.
 772
 773    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 774
 775 void
 776 print_rtl (FILE *outf, const_rtx rtx_first)
 777 {
 778   const_rtx tmp_rtx;
 779
 780   outfile = outf;
 781   sawclose = 0;
 782
 783   if (rtx_first == 0)
 784     {
 785       fputs (print_rtx_head, outf);
 786       fputs ("(nil)\n", outf);
 787     }
 788   else
 789     switch (GET_CODE (rtx_first))
 790       {
 791       case INSN:
 792       case JUMP_INSN:
 793       case CALL_INSN:
 794       case NOTE:
 795       case CODE_LABEL:
 796       case JUMP_TABLE_DATA:
 797       case BARRIER:
 798         for (tmp_rtx = rtx_first; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
 799           {
 800             fputs (print_rtx_head, outfile);
 801             print_rtx (tmp_rtx);
 802             fprintf (outfile, "\n");
 803           }
 804         break;
 805
 806       default:
 807         fputs (print_rtx_head, outfile);
 808         print_rtx (rtx_first);
 809       }
 810 }
 811
 812 /* Like print_rtx, except specify a file.  */
 813 /* Return nonzero if we actually printed anything.  */
 814
 815 int
 816 print_rtl_single (FILE *outf, const_rtx x)
 817 {
 818   return print_rtl_single_with_indent (outf, x, 0);
 819 }
 820
 821 /* Like print_rtl_single, except specify a file and indentation.  */
 822
 823 int
 824 print_rtl_single_with_indent (FILE *outf, const_rtx x, int ind)
 825 {
 826   int old_indent = indent;
 827   char *s_indent = (char *) alloca ((size_t) ind + 1);
 828   memset ((void *) s_indent, ' ', (size_t) ind);
 829   s_indent[ind] = '\0';
 830
 831   indent = ind;
 832   outfile = outf;
 833   sawclose = 0;
 834   fputs (s_indent, outfile);
 835   fputs (print_rtx_head, outfile);
 836   print_rtx (x);
 837   putc ('\n', outf);
 838   indent = old_indent;
 839   return 1;
 840 }
 841
 842
 843 /* Like print_rtl except without all the detail; for example,
 844    if RTX is a CONST_INT then print in decimal format.  */
 845
 846 void
 847 print_simple_rtl (FILE *outf, const_rtx x)
 848 {
 849   flag_simple = 1;
 850   print_rtl (outf, x);
 851   flag_simple = 0;
 852 }