gcc/print-rtl.c

   1 /* Print RTL for GCC.
   2    Copyright (C) 1987-2015 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 "hash-set.h"
  37 #include "vec.h"
  38 #include "input.h"
  39 #include "alias.h"
  40 #include "symtab.h"
  41 #include "inchash.h"
  42 #include "tree.h"
  43 #include "print-tree.h"
  44 #include "flags.h"
  45 #include "hard-reg-set.h"
  46 #include "predict.h"
  47 #include "input.h"
  48 #include "function.h"
  49 #include "basic-block.h"
  50 #include "diagnostic.h"
  51 #include "tree-pretty-print.h"
  52 #include "alloc-pool.h"
  53 #include "cselib.h"
  54 #include "dumpfile.h"   /* for dump_flags */
  55 #include "dwarf2out.h"
  56 #endif
  57
  58 static FILE *outfile;
  59
  60 static int sawclose = 0;
  61
  62 static int indent;
  63
  64 static bool in_call_function_usage;
  65
  66 static void print_rtx (const_rtx);
  67
  68 /* String printed at beginning of each RTL when it is dumped.
  69    This string is set to ASM_COMMENT_START when the RTL is dumped in
  70    the assembly output file.  */
  71 const char *print_rtx_head = "";
  72
  73 #ifdef GENERATOR_FILE
  74 /* These are defined from the .opt file when not used in generator
  75    programs.  */
  76
  77 /* Nonzero means suppress output of instruction numbers
  78    in debugging dumps.
  79    This must be defined here so that programs like gencodes can be linked.  */
  80 int flag_dump_unnumbered = 0;
  81
  82 /* Nonzero means suppress output of instruction numbers for previous
  83    and next insns in debugging dumps.
  84    This must be defined here so that programs like gencodes can be linked.  */
  85 int flag_dump_unnumbered_links = 0;
  86 #endif
  87
  88 /* Nonzero means use simplified format without flags, modes, etc.  */
  89 int flag_simple = 0;
  90
  91 #ifndef GENERATOR_FILE
  92 void
  93 print_mem_expr (FILE *outfile, const_tree expr)
  94 {
  95   fputc (' ', outfile);
  96   print_generic_expr (outfile, CONST_CAST_TREE (expr), dump_flags);
  97 }
  98 #endif
  99
 100 /* Print IN_RTX onto OUTFILE.  This is the recursive part of printing.  */
 101
 102 static void
 103 print_rtx (const_rtx in_rtx)
 104 {
 105   int i = 0;
 106   int j;
 107   const char *format_ptr;
 108   int is_insn;
 109
 110   if (sawclose)
 111     {
 112       if (flag_simple)
 113         fputc (' ', outfile);
 114       else
 115         fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 116       sawclose = 0;
 117     }
 118
 119   if (in_rtx == 0)
 120     {
 121       fputs ("(nil)", outfile);
 122       sawclose = 1;
 123       return;
 124     }
 125   else if (GET_CODE (in_rtx) > NUM_RTX_CODE)
 126     {
 127        fprintf (outfile, "(??? bad code %d\n%s%*s)", GET_CODE (in_rtx),
 128                 print_rtx_head, indent * 2, "");
 129        sawclose = 1;
 130        return;
 131     }
 132
 133   is_insn = INSN_P (in_rtx);
 134
 135   /* Print name of expression code.  */
 136   if (flag_simple && CONST_INT_P (in_rtx))
 137     fputc ('(', outfile);
 138   else
 139     fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
 140
 141   if (! flag_simple)
 142     {
 143       if (RTX_FLAG (in_rtx, in_struct))
 144         fputs ("/s", outfile);
 145
 146       if (RTX_FLAG (in_rtx, volatil))
 147         fputs ("/v", outfile);
 148
 149       if (RTX_FLAG (in_rtx, unchanging))
 150         fputs ("/u", outfile);
 151
 152       if (RTX_FLAG (in_rtx, frame_related))
 153         fputs ("/f", outfile);
 154
 155       if (RTX_FLAG (in_rtx, jump))
 156         fputs ("/j", outfile);
 157
 158       if (RTX_FLAG (in_rtx, call))
 159         fputs ("/c", outfile);
 160
 161       if (RTX_FLAG (in_rtx, return_val))
 162         fputs ("/i", outfile);
 163
 164       /* Print REG_NOTE names for EXPR_LIST and INSN_LIST.  */
 165       if ((GET_CODE (in_rtx) == EXPR_LIST
 166            || GET_CODE (in_rtx) == INSN_LIST
 167            || GET_CODE (in_rtx) == INT_LIST)
 168           && (int)GET_MODE (in_rtx) < REG_NOTE_MAX
 169           && !in_call_function_usage)
 170         fprintf (outfile, ":%s",
 171                  GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
 172
 173       /* For other rtl, print the mode if it's not VOID.  */
 174       else if (GET_MODE (in_rtx) != VOIDmode)
 175         fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
 176
 177 #ifndef GENERATOR_FILE
 178       if (GET_CODE (in_rtx) == VAR_LOCATION)
 179         {
 180           if (TREE_CODE (PAT_VAR_LOCATION_DECL (in_rtx)) == STRING_CST)
 181             fputs (" <debug string placeholder>", outfile);
 182           else
 183             print_mem_expr (outfile, PAT_VAR_LOCATION_DECL (in_rtx));
 184           fputc (' ', outfile);
 185           print_rtx (PAT_VAR_LOCATION_LOC (in_rtx));
 186           if (PAT_VAR_LOCATION_STATUS (in_rtx)
 187               == VAR_INIT_STATUS_UNINITIALIZED)
 188             fprintf (outfile, " [uninit]");
 189           sawclose = 1;
 190           i = GET_RTX_LENGTH (VAR_LOCATION);
 191         }
 192 #endif
 193     }
 194
 195 #ifndef GENERATOR_FILE
 196   if (CONST_DOUBLE_AS_FLOAT_P (in_rtx))
 197     i = 5;
 198 #endif
 199
 200   if (INSN_CHAIN_CODE_P (GET_CODE (in_rtx)))
 201     {
 202       if (flag_dump_unnumbered)
 203         fprintf (outfile, " #");
 204       else
 205         fprintf (outfile, " %d", INSN_UID (in_rtx));
 206     }
 207
 208   /* Get the format string and skip the first elements if we have handled
 209      them already.  */
 210   format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
 211   for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
 212     switch (*format_ptr++)
 213       {
 214         const char *str;
 215
 216       case 'T':
 217         str = XTMPL (in_rtx, i);
 218         goto string;
 219
 220       case 'S':
 221       case 's':
 222         str = XSTR (in_rtx, i);
 223       string:
 224
 225         if (str == 0)
 226           fputs (" \"\"", outfile);
 227         else
 228           fprintf (outfile, " (\"%s\")", str);
 229         sawclose = 1;
 230         break;
 231
 232         /* 0 indicates a field for internal use that should not be printed.
 233            An exception is the third field of a NOTE, where it indicates
 234            that the field has several different valid contents.  */
 235       case '0':
 236 #ifndef GENERATOR_FILE
 237         if (i == 1 && GET_CODE (in_rtx) == SYMBOL_REF)
 238           {
 239             int flags = SYMBOL_REF_FLAGS (in_rtx);
 240             if (flags)
 241               fprintf (outfile, " [flags %#x]", flags);
 242             tree decl = SYMBOL_REF_DECL (in_rtx);
 243             if (decl)
 244               print_node_brief (outfile, "", decl, dump_flags);
 245           }
 246         else if (i == 3 && NOTE_P (in_rtx))
 247           {
 248             switch (NOTE_KIND (in_rtx))
 249               {
 250               case NOTE_INSN_EH_REGION_BEG:
 251               case NOTE_INSN_EH_REGION_END:
 252                 if (flag_dump_unnumbered)
 253                   fprintf (outfile, " #");
 254                 else
 255                   fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
 256                 sawclose = 1;
 257                 break;
 258
 259               case NOTE_INSN_BLOCK_BEG:
 260               case NOTE_INSN_BLOCK_END:
 261                 dump_addr (outfile, " ", NOTE_BLOCK (in_rtx));
 262                 sawclose = 1;
 263                 break;
 264
 265               case NOTE_INSN_BASIC_BLOCK:
 266                 {
 267                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 268                   if (bb != 0)
 269                     fprintf (outfile, " [bb %d]", bb->index);
 270                   break;
 271                 }
 272
 273               case NOTE_INSN_DELETED_LABEL:
 274               case NOTE_INSN_DELETED_DEBUG_LABEL:
 275                 {
 276                   const char *label = NOTE_DELETED_LABEL_NAME (in_rtx);
 277                   if (label)
 278                     fprintf (outfile, " (\"%s\")", label);
 279                   else
 280                     fprintf (outfile, " \"\"");
 281                 }
 282                 break;
 283
 284               case NOTE_INSN_SWITCH_TEXT_SECTIONS:
 285                 {
 286                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 287                   if (bb != 0)
 288                     fprintf (outfile, " [bb %d]", bb->index);
 289                   break;
 290                 }
 291
 292               case NOTE_INSN_VAR_LOCATION:
 293               case NOTE_INSN_CALL_ARG_LOCATION:
 294                 fputc (' ', outfile);
 295                 print_rtx (NOTE_VAR_LOCATION (in_rtx));
 296                 break;
 297
 298               case NOTE_INSN_CFI:
 299                 fputc ('\n', outfile);
 300                 output_cfi_directive (outfile, NOTE_CFI (in_rtx));
 301                 fputc ('\t', outfile);
 302                 break;
 303
 304               default:
 305                 break;
 306               }
 307           }
 308         else if (i == 7 && JUMP_P (in_rtx) && JUMP_LABEL (in_rtx) != NULL)
 309           {
 310             /* Output the JUMP_LABEL reference.  */
 311             fprintf (outfile, "\n%s%*s -> ", print_rtx_head, indent * 2, "");
 312             if (GET_CODE (JUMP_LABEL (in_rtx)) == RETURN)
 313               fprintf (outfile, "return");
 314             else if (GET_CODE (JUMP_LABEL (in_rtx)) == SIMPLE_RETURN)
 315               fprintf (outfile, "simple_return");
 316             else
 317               fprintf (outfile, "%d", INSN_UID (JUMP_LABEL (in_rtx)));
 318           }
 319         else if (i == 0 && GET_CODE (in_rtx) == VALUE)
 320           {
 321             cselib_val *val = CSELIB_VAL_PTR (in_rtx);
 322
 323             fprintf (outfile, " %u:%u", val->uid, val->hash);
 324             dump_addr (outfile, " @", in_rtx);
 325             dump_addr (outfile, "/", (void*)val);
 326           }
 327         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_EXPR)
 328           {
 329             fprintf (outfile, " D#%i",
 330                      DEBUG_TEMP_UID (DEBUG_EXPR_TREE_DECL (in_rtx)));
 331           }
 332         else if (i == 0 && GET_CODE (in_rtx) == ENTRY_VALUE)
 333           {
 334             indent += 2;
 335             if (!sawclose)
 336               fprintf (outfile, " ");
 337             print_rtx (ENTRY_VALUE_EXP (in_rtx));
 338             indent -= 2;
 339           }
 340 #endif
 341         break;
 342
 343       case 'e':
 344       do_e:
 345         indent += 2;
 346         if (i == 6 && INSN_P (in_rtx))
 347           /* Put REG_NOTES on their own line.  */
 348           fprintf (outfile, "\n%s%*s",
 349                    print_rtx_head, indent * 2, "");
 350         if (!sawclose)
 351           fprintf (outfile, " ");
 352         if (i == 7 && CALL_P (in_rtx))
 353           {
 354             in_call_function_usage = true;
 355             print_rtx (XEXP (in_rtx, i));
 356             in_call_function_usage = false;
 357           }
 358         else
 359           print_rtx (XEXP (in_rtx, i));
 360         indent -= 2;
 361         break;
 362
 363       case 'E':
 364       case 'V':
 365         indent += 2;
 366         if (sawclose)
 367           {
 368             fprintf (outfile, "\n%s%*s",
 369                      print_rtx_head, indent * 2, "");
 370             sawclose = 0;
 371           }
 372         fputs (" [", outfile);
 373         if (NULL != XVEC (in_rtx, i))
 374           {
 375             indent += 2;
 376             if (XVECLEN (in_rtx, i))
 377               sawclose = 1;
 378
 379             for (j = 0; j < XVECLEN (in_rtx, i); j++)
 380               print_rtx (XVECEXP (in_rtx, i, j));
 381
 382             indent -= 2;
 383           }
 384         if (sawclose)
 385           fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 386
 387         fputs ("]", outfile);
 388         sawclose = 1;
 389         indent -= 2;
 390         break;
 391
 392       case 'w':
 393         if (! flag_simple)
 394           fprintf (outfile, " ");
 395         fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
 396         if (! flag_simple)
 397           fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
 398                    (unsigned HOST_WIDE_INT) XWINT (in_rtx, i));
 399         break;
 400
 401       case 'i':
 402         if (i == 4 && INSN_P (in_rtx))
 403           {
 404 #ifndef GENERATOR_FILE
 405             const rtx_insn *in_insn = as_a <const rtx_insn *> (in_rtx);
 406
 407             /*  Pretty-print insn locations.  Ignore scoping as it is mostly
 408                 redundant with line number information and do not print anything
 409                 when there is no location information available.  */
 410             if (INSN_HAS_LOCATION (in_insn))
 411               {
 412                 expanded_location xloc = insn_location (in_insn);
 413                 fprintf (outfile, " %s:%i", xloc.file, xloc.line);
 414               }
 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 == 5 && 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             if (flag_dump_unnumbered
 464                 && (is_insn || NOTE_P (in_rtx)))
 465               fputc ('#', outfile);
 466             else
 467               fprintf (outfile, " %d", value);
 468
 469             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 470                 && XINT (in_rtx, i) >= 0
 471                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 472               fprintf (outfile, " {%s}", name);
 473             sawclose = 0;
 474           }
 475         break;
 476
 477       case 'r':
 478         {
 479           unsigned int regno = REGNO (in_rtx);
 480 #ifndef GENERATOR_FILE
 481           if (regno < FIRST_PSEUDO_REGISTER)
 482             fprintf (outfile, " %d %s", regno, reg_names[regno]);
 483           else if (regno <= LAST_VIRTUAL_REGISTER)
 484             {
 485               if (regno == VIRTUAL_INCOMING_ARGS_REGNUM)
 486                 fprintf (outfile, " %d virtual-incoming-args", regno);
 487               else if (regno == VIRTUAL_STACK_VARS_REGNUM)
 488                 fprintf (outfile, " %d virtual-stack-vars", regno);
 489               else if (regno == VIRTUAL_STACK_DYNAMIC_REGNUM)
 490                 fprintf (outfile, " %d virtual-stack-dynamic", regno);
 491               else if (regno == VIRTUAL_OUTGOING_ARGS_REGNUM)
 492                 fprintf (outfile, " %d virtual-outgoing-args", regno);
 493               else if (regno == VIRTUAL_CFA_REGNUM)
 494                 fprintf (outfile, " %d virtual-cfa", regno);
 495               else if (regno == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 496                 fprintf (outfile, " %d virtual-preferred-stack-boundary",
 497                          regno);
 498               else
 499                 fprintf (outfile, " %d virtual-reg-%d", regno,
 500                          regno-FIRST_VIRTUAL_REGISTER);
 501             }
 502           else
 503 #endif
 504             if (flag_dump_unnumbered && is_insn)
 505               fputc ('#', outfile);
 506             else
 507               fprintf (outfile, " %d", regno);
 508
 509 #ifndef GENERATOR_FILE
 510           if (REG_ATTRS (in_rtx))
 511             {
 512               fputs (" [", outfile);
 513               if (regno != ORIGINAL_REGNO (in_rtx))
 514                 fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 515               if (REG_EXPR (in_rtx))
 516                 print_mem_expr (outfile, REG_EXPR (in_rtx));
 517
 518               if (REG_OFFSET (in_rtx))
 519                 fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 520                          REG_OFFSET (in_rtx));
 521               fputs (" ]", outfile);
 522             }
 523           if (regno != ORIGINAL_REGNO (in_rtx))
 524             fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
 525 #endif
 526           break;
 527         }
 528
 529       /* Print NOTE_INSN names rather than integer codes.  */
 530
 531       case 'n':
 532         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 533         sawclose = 0;
 534         break;
 535
 536       case 'u':
 537         if (XEXP (in_rtx, i) != NULL)
 538           {
 539             rtx sub = XEXP (in_rtx, i);
 540             enum rtx_code subc = GET_CODE (sub);
 541
 542             if (GET_CODE (in_rtx) == LABEL_REF)
 543               {
 544                 if (subc == NOTE
 545                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 546                   {
 547                     if (flag_dump_unnumbered)
 548                       fprintf (outfile, " [# deleted]");
 549                     else
 550                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 551                     sawclose = 0;
 552                     break;
 553                   }
 554
 555                 if (subc != CODE_LABEL)
 556                   goto do_e;
 557               }
 558
 559             if (flag_dump_unnumbered
 560                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 561                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 562                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 563               fputs (" #", outfile);
 564             else
 565               fprintf (outfile, " %d", INSN_UID (sub));
 566           }
 567         else
 568           fputs (" 0", outfile);
 569         sawclose = 0;
 570         break;
 571
 572       case 't':
 573 #ifndef GENERATOR_FILE
 574         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 575           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 576         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_PARAMETER_REF)
 577           print_mem_expr (outfile, DEBUG_PARAMETER_REF_DECL (in_rtx));
 578         else
 579           dump_addr (outfile, " ", XTREE (in_rtx, i));
 580 #endif
 581         break;
 582
 583       case '*':
 584         fputs (" Unknown", outfile);
 585         sawclose = 0;
 586         break;
 587
 588       case 'B':
 589 #ifndef GENERATOR_FILE
 590         if (XBBDEF (in_rtx, i))
 591           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 592 #endif
 593         break;
 594
 595       default:
 596         gcc_unreachable ();
 597       }
 598
 599   switch (GET_CODE (in_rtx))
 600     {
 601 #ifndef GENERATOR_FILE
 602     case MEM:
 603       if (__builtin_expect (final_insns_dump_p, false))
 604         fprintf (outfile, " [");
 605       else
 606         fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 607                  (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 608
 609       if (MEM_EXPR (in_rtx))
 610         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 611       else
 612         fputc (' ', outfile);
 613
 614       if (MEM_OFFSET_KNOWN_P (in_rtx))
 615         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC, MEM_OFFSET (in_rtx));
 616
 617       if (MEM_SIZE_KNOWN_P (in_rtx))
 618         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC, MEM_SIZE (in_rtx));
 619
 620       if (MEM_ALIGN (in_rtx) != 1)
 621         fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
 622
 623       if (!ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (in_rtx)))
 624         fprintf (outfile, " AS%u", MEM_ADDR_SPACE (in_rtx));
 625
 626       fputc (']', outfile);
 627       break;
 628
 629     case CONST_DOUBLE:
 630       if (FLOAT_MODE_P (GET_MODE (in_rtx)))
 631         {
 632           char s[60];
 633
 634           real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 635                            sizeof (s), 0, 1);
 636           fprintf (outfile, " %s", s);
 637
 638           real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 639                                sizeof (s), 0, 1);
 640           fprintf (outfile, " [%s]", s);
 641         }
 642       break;
 643
 644     case CONST_WIDE_INT:
 645       fprintf (outfile, " ");
 646       cwi_output_hex (outfile, in_rtx);
 647       break;
 648 #endif
 649
 650     case CODE_LABEL:
 651       fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
 652       switch (LABEL_KIND (in_rtx))
 653         {
 654           case LABEL_NORMAL: break;
 655           case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
 656           case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
 657           case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
 658           default: gcc_unreachable ();
 659         }
 660       break;
 661
 662     default:
 663       break;
 664     }
 665
 666   fputc (')', outfile);
 667   sawclose = 1;
 668 }
 669
 670 /* Print an rtx on the current line of FILE.  Initially indent IND
 671    characters.  */
 672
 673 void
 674 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 675 {
 676   int oldsaw = sawclose;
 677   int oldindent = indent;
 678
 679   sawclose = 0;
 680   indent = ind;
 681   outfile = outf;
 682   print_rtx (x);
 683   sawclose = oldsaw;
 684   indent = oldindent;
 685 }
 686
 687 /* Call this function from the debugger to see what X looks like.  */
 688
 689 DEBUG_FUNCTION void
 690 debug_rtx (const_rtx x)
 691 {
 692   outfile = stderr;
 693   sawclose = 0;
 694   print_rtx (x);
 695   fprintf (stderr, "\n");
 696 }
 697
 698 /* Dump rtx REF.  */
 699
 700 DEBUG_FUNCTION void
 701 debug (const rtx_def &ref)
 702 {
 703   debug_rtx (&ref);
 704 }
 705
 706 DEBUG_FUNCTION void
 707 debug (const rtx_def *ptr)
 708 {
 709   if (ptr)
 710     debug (*ptr);
 711   else
 712     fprintf (stderr, "<nil>\n");
 713 }
 714
 715 /* Count of rtx's to print with debug_rtx_list.
 716    This global exists because gdb user defined commands have no arguments.  */
 717
 718 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 719
 720 /* Call this function to print list from X on.
 721
 722    N is a count of the rtx's to print. Positive values print from the specified
 723    rtx_insn on.  Negative values print a window around the rtx_insn.
 724    EG: -5 prints 2 rtx_insn's on either side (in addition to the specified
 725    rtx_insn).  */
 726
 727 DEBUG_FUNCTION void
 728 debug_rtx_list (const rtx_insn *x, int n)
 729 {
 730   int i,count;
 731   const rtx_insn *insn;
 732
 733   count = n == 0 ? 1 : n < 0 ? -n : n;
 734
 735   /* If we are printing a window, back up to the start.  */
 736
 737   if (n < 0)
 738     for (i = count / 2; i > 0; i--)
 739       {
 740         if (PREV_INSN (x) == 0)
 741           break;
 742         x = PREV_INSN (x);
 743       }
 744
 745   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 746     {
 747       debug_rtx (insn);
 748       fprintf (stderr, "\n");
 749     }
 750 }
 751
 752 /* Call this function to print an rtx_insn list from START to END
 753    inclusive.  */
 754
 755 DEBUG_FUNCTION void
 756 debug_rtx_range (const rtx_insn *start, const rtx_insn *end)
 757 {
 758   while (1)
 759     {
 760       debug_rtx (start);
 761       fprintf (stderr, "\n");
 762       if (!start || start == end)
 763         break;
 764       start = NEXT_INSN (start);
 765     }
 766 }
 767
 768 /* Call this function to search an rtx_insn list to find one with insn uid UID,
 769    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 770    The found insn is returned to enable further debugging analysis.  */
 771
 772 DEBUG_FUNCTION const rtx_insn *
 773 debug_rtx_find (const rtx_insn *x, int uid)
 774 {
 775   while (x != 0 && INSN_UID (x) != uid)
 776     x = NEXT_INSN (x);
 777   if (x != 0)
 778     {
 779       debug_rtx_list (x, debug_rtx_count);
 780       return x;
 781     }
 782   else
 783     {
 784       fprintf (stderr, "insn uid %d not found\n", uid);
 785       return 0;
 786     }
 787 }
 788
 789 /* External entry point for printing a chain of insns
 790    starting with RTX_FIRST onto file OUTF.
 791    A blank line separates insns.
 792
 793    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 794
 795 void
 796 print_rtl (FILE *outf, const_rtx rtx_first)
 797 {
 798   const rtx_insn *tmp_rtx;
 799
 800   outfile = outf;
 801   sawclose = 0;
 802
 803   if (rtx_first == 0)
 804     {
 805       fputs (print_rtx_head, outf);
 806       fputs ("(nil)\n", outf);
 807     }
 808   else
 809     switch (GET_CODE (rtx_first))
 810       {
 811       case INSN:
 812       case JUMP_INSN:
 813       case CALL_INSN:
 814       case NOTE:
 815       case CODE_LABEL:
 816       case JUMP_TABLE_DATA:
 817       case BARRIER:
 818         for (tmp_rtx = as_a <const rtx_insn *> (rtx_first);
 819              tmp_rtx != 0;
 820              tmp_rtx = NEXT_INSN (tmp_rtx))
 821           {
 822             fputs (print_rtx_head, outfile);
 823             print_rtx (tmp_rtx);
 824             fprintf (outfile, "\n");
 825           }
 826         break;
 827
 828       default:
 829         fputs (print_rtx_head, outfile);
 830         print_rtx (rtx_first);
 831       }
 832 }
 833
 834 /* Like print_rtx, except specify a file.  */
 835 /* Return nonzero if we actually printed anything.  */
 836
 837 int
 838 print_rtl_single (FILE *outf, const_rtx x)
 839 {
 840   return print_rtl_single_with_indent (outf, x, 0);
 841 }
 842
 843 /* Like print_rtl_single, except specify a file and indentation.  */
 844
 845 int
 846 print_rtl_single_with_indent (FILE *outf, const_rtx x, int ind)
 847 {
 848   int old_indent = indent;
 849   char *s_indent = (char *) alloca ((size_t) ind + 1);
 850   memset ((void *) s_indent, ' ', (size_t) ind);
 851   s_indent[ind] = '\0';
 852
 853   indent = ind;
 854   outfile = outf;
 855   sawclose = 0;
 856   fputs (s_indent, outfile);
 857   fputs (print_rtx_head, outfile);
 858   print_rtx (x);
 859   putc ('\n', outf);
 860   indent = old_indent;
 861   return 1;
 862 }
 863
 864
 865 /* Like print_rtl except without all the detail; for example,
 866    if RTX is a CONST_INT then print in decimal format.  */
 867
 868 void
 869 print_simple_rtl (FILE *outf, const_rtx x)
 870 {
 871   flag_simple = 1;
 872   print_rtl (outf, x);
 873   flag_simple = 0;
 874 }