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 "machmode.h"
  38 #include "vec.h"
  39 #include "double-int.h"
  40 #include "input.h"
  41 #include "alias.h"
  42 #include "symtab.h"
  43 #include "wide-int.h"
  44 #include "inchash.h"
  45 #include "tree.h"
  46 #include "print-tree.h"
  47 #include "flags.h"
  48 #include "hard-reg-set.h"
  49 #include "predict.h"
  50 #include "input.h"
  51 #include "function.h"
  52 #include "basic-block.h"
  53 #include "diagnostic.h"
  54 #include "tree-pretty-print.h"
  55 #include "cselib.h"
  56 #include "dumpfile.h"   /* for dump_flags */
  57 #include "dwarf2out.h"
  58 #endif
  59
  60 static FILE *outfile;
  61
  62 static int sawclose = 0;
  63
  64 static int indent;
  65
  66 static bool in_call_function_usage;
  67
  68 static void print_rtx (const_rtx);
  69
  70 /* String printed at beginning of each RTL when it is dumped.
  71    This string is set to ASM_COMMENT_START when the RTL is dumped in
  72    the assembly output file.  */
  73 const char *print_rtx_head = "";
  74
  75 #ifdef GENERATOR_FILE
  76 /* These are defined from the .opt file when not used in generator
  77    programs.  */
  78
  79 /* Nonzero means suppress output of instruction numbers
  80    in debugging dumps.
  81    This must be defined here so that programs like gencodes can be linked.  */
  82 int flag_dump_unnumbered = 0;
  83
  84 /* Nonzero means suppress output of instruction numbers for previous
  85    and next insns in debugging dumps.
  86    This must be defined here so that programs like gencodes can be linked.  */
  87 int flag_dump_unnumbered_links = 0;
  88 #endif
  89
  90 /* Nonzero means use simplified format without flags, modes, etc.  */
  91 int flag_simple = 0;
  92
  93 #ifndef GENERATOR_FILE
  94 void
  95 print_mem_expr (FILE *outfile, const_tree expr)
  96 {
  97   fputc (' ', outfile);
  98   print_generic_expr (outfile, CONST_CAST_TREE (expr), dump_flags);
  99 }
 100 #endif
 101
 102 /* Print IN_RTX onto OUTFILE.  This is the recursive part of printing.  */
 103
 104 static void
 105 print_rtx (const_rtx in_rtx)
 106 {
 107   int i = 0;
 108   int j;
 109   const char *format_ptr;
 110   int is_insn;
 111
 112   if (sawclose)
 113     {
 114       if (flag_simple)
 115         fputc (' ', outfile);
 116       else
 117         fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 118       sawclose = 0;
 119     }
 120
 121   if (in_rtx == 0)
 122     {
 123       fputs ("(nil)", outfile);
 124       sawclose = 1;
 125       return;
 126     }
 127   else if (GET_CODE (in_rtx) > NUM_RTX_CODE)
 128     {
 129        fprintf (outfile, "(??? bad code %d\n%s%*s)", GET_CODE (in_rtx),
 130                 print_rtx_head, indent * 2, "");
 131        sawclose = 1;
 132        return;
 133     }
 134
 135   is_insn = INSN_P (in_rtx);
 136
 137   /* Print name of expression code.  */
 138   if (flag_simple && CONST_INT_P (in_rtx))
 139     fputc ('(', outfile);
 140   else
 141     fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
 142
 143   if (! flag_simple)
 144     {
 145       if (RTX_FLAG (in_rtx, in_struct))
 146         fputs ("/s", outfile);
 147
 148       if (RTX_FLAG (in_rtx, volatil))
 149         fputs ("/v", outfile);
 150
 151       if (RTX_FLAG (in_rtx, unchanging))
 152         fputs ("/u", outfile);
 153
 154       if (RTX_FLAG (in_rtx, frame_related))
 155         fputs ("/f", outfile);
 156
 157       if (RTX_FLAG (in_rtx, jump))
 158         fputs ("/j", outfile);
 159
 160       if (RTX_FLAG (in_rtx, call))
 161         fputs ("/c", outfile);
 162
 163       if (RTX_FLAG (in_rtx, return_val))
 164         fputs ("/i", outfile);
 165
 166       /* Print REG_NOTE names for EXPR_LIST and INSN_LIST.  */
 167       if ((GET_CODE (in_rtx) == EXPR_LIST
 168            || GET_CODE (in_rtx) == INSN_LIST
 169            || GET_CODE (in_rtx) == INT_LIST)
 170           && (int)GET_MODE (in_rtx) < REG_NOTE_MAX
 171           && !in_call_function_usage)
 172         fprintf (outfile, ":%s",
 173                  GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
 174
 175       /* For other rtl, print the mode if it's not VOID.  */
 176       else if (GET_MODE (in_rtx) != VOIDmode)
 177         fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
 178
 179 #ifndef GENERATOR_FILE
 180       if (GET_CODE (in_rtx) == VAR_LOCATION)
 181         {
 182           if (TREE_CODE (PAT_VAR_LOCATION_DECL (in_rtx)) == STRING_CST)
 183             fputs (" <debug string placeholder>", outfile);
 184           else
 185             print_mem_expr (outfile, PAT_VAR_LOCATION_DECL (in_rtx));
 186           fputc (' ', outfile);
 187           print_rtx (PAT_VAR_LOCATION_LOC (in_rtx));
 188           if (PAT_VAR_LOCATION_STATUS (in_rtx)
 189               == VAR_INIT_STATUS_UNINITIALIZED)
 190             fprintf (outfile, " [uninit]");
 191           sawclose = 1;
 192           i = GET_RTX_LENGTH (VAR_LOCATION);
 193         }
 194 #endif
 195     }
 196
 197 #ifndef GENERATOR_FILE
 198   if (CONST_DOUBLE_AS_FLOAT_P (in_rtx))
 199     i = 5;
 200 #endif
 201
 202   if (INSN_CHAIN_CODE_P (GET_CODE (in_rtx)))
 203     {
 204       if (flag_dump_unnumbered)
 205         fprintf (outfile, " #");
 206       else
 207         fprintf (outfile, " %d", INSN_UID (in_rtx));
 208     }
 209
 210   /* Get the format string and skip the first elements if we have handled
 211      them already.  */
 212   format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
 213   for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
 214     switch (*format_ptr++)
 215       {
 216         const char *str;
 217
 218       case 'T':
 219         str = XTMPL (in_rtx, i);
 220         goto string;
 221
 222       case 'S':
 223       case 's':
 224         str = XSTR (in_rtx, i);
 225       string:
 226
 227         if (str == 0)
 228           fputs (" \"\"", outfile);
 229         else
 230           fprintf (outfile, " (\"%s\")", str);
 231         sawclose = 1;
 232         break;
 233
 234         /* 0 indicates a field for internal use that should not be printed.
 235            An exception is the third field of a NOTE, where it indicates
 236            that the field has several different valid contents.  */
 237       case '0':
 238 #ifndef GENERATOR_FILE
 239         if (i == 1 && GET_CODE (in_rtx) == SYMBOL_REF)
 240           {
 241             int flags = SYMBOL_REF_FLAGS (in_rtx);
 242             if (flags)
 243               fprintf (outfile, " [flags %#x]", flags);
 244             tree decl = SYMBOL_REF_DECL (in_rtx);
 245             if (decl)
 246               print_node_brief (outfile, "", decl, dump_flags);
 247           }
 248         else if (i == 3 && NOTE_P (in_rtx))
 249           {
 250             switch (NOTE_KIND (in_rtx))
 251               {
 252               case NOTE_INSN_EH_REGION_BEG:
 253               case NOTE_INSN_EH_REGION_END:
 254                 if (flag_dump_unnumbered)
 255                   fprintf (outfile, " #");
 256                 else
 257                   fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
 258                 sawclose = 1;
 259                 break;
 260
 261               case NOTE_INSN_BLOCK_BEG:
 262               case NOTE_INSN_BLOCK_END:
 263                 dump_addr (outfile, " ", NOTE_BLOCK (in_rtx));
 264                 sawclose = 1;
 265                 break;
 266
 267               case NOTE_INSN_BASIC_BLOCK:
 268                 {
 269                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 270                   if (bb != 0)
 271                     fprintf (outfile, " [bb %d]", bb->index);
 272                   break;
 273                 }
 274
 275               case NOTE_INSN_DELETED_LABEL:
 276               case NOTE_INSN_DELETED_DEBUG_LABEL:
 277                 {
 278                   const char *label = NOTE_DELETED_LABEL_NAME (in_rtx);
 279                   if (label)
 280                     fprintf (outfile, " (\"%s\")", label);
 281                   else
 282                     fprintf (outfile, " \"\"");
 283                 }
 284                 break;
 285
 286               case NOTE_INSN_SWITCH_TEXT_SECTIONS:
 287                 {
 288                   basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
 289                   if (bb != 0)
 290                     fprintf (outfile, " [bb %d]", bb->index);
 291                   break;
 292                 }
 293
 294               case NOTE_INSN_VAR_LOCATION:
 295               case NOTE_INSN_CALL_ARG_LOCATION:
 296                 fputc (' ', outfile);
 297                 print_rtx (NOTE_VAR_LOCATION (in_rtx));
 298                 break;
 299
 300               case NOTE_INSN_CFI:
 301                 fputc ('\n', outfile);
 302                 output_cfi_directive (outfile, NOTE_CFI (in_rtx));
 303                 fputc ('\t', outfile);
 304                 break;
 305
 306               default:
 307                 break;
 308               }
 309           }
 310         else if (i == 7 && JUMP_P (in_rtx) && JUMP_LABEL (in_rtx) != NULL)
 311           {
 312             /* Output the JUMP_LABEL reference.  */
 313             fprintf (outfile, "\n%s%*s -> ", print_rtx_head, indent * 2, "");
 314             if (GET_CODE (JUMP_LABEL (in_rtx)) == RETURN)
 315               fprintf (outfile, "return");
 316             else if (GET_CODE (JUMP_LABEL (in_rtx)) == SIMPLE_RETURN)
 317               fprintf (outfile, "simple_return");
 318             else
 319               fprintf (outfile, "%d", INSN_UID (JUMP_LABEL (in_rtx)));
 320           }
 321         else if (i == 0 && GET_CODE (in_rtx) == VALUE)
 322           {
 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           }
 329         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_EXPR)
 330           {
 331             fprintf (outfile, " D#%i",
 332                      DEBUG_TEMP_UID (DEBUG_EXPR_TREE_DECL (in_rtx)));
 333           }
 334         else if (i == 0 && GET_CODE (in_rtx) == ENTRY_VALUE)
 335           {
 336             indent += 2;
 337             if (!sawclose)
 338               fprintf (outfile, " ");
 339             print_rtx (ENTRY_VALUE_EXP (in_rtx));
 340             indent -= 2;
 341           }
 342 #endif
 343         break;
 344
 345       case 'e':
 346       do_e:
 347         indent += 2;
 348         if (i == 6 && INSN_P (in_rtx))
 349           /* Put REG_NOTES on their own line.  */
 350           fprintf (outfile, "\n%s%*s",
 351                    print_rtx_head, indent * 2, "");
 352         if (!sawclose)
 353           fprintf (outfile, " ");
 354         if (i == 7 && CALL_P (in_rtx))
 355           {
 356             in_call_function_usage = true;
 357             print_rtx (XEXP (in_rtx, i));
 358             in_call_function_usage = false;
 359           }
 360         else
 361           print_rtx (XEXP (in_rtx, i));
 362         indent -= 2;
 363         break;
 364
 365       case 'E':
 366       case 'V':
 367         indent += 2;
 368         if (sawclose)
 369           {
 370             fprintf (outfile, "\n%s%*s",
 371                      print_rtx_head, indent * 2, "");
 372             sawclose = 0;
 373           }
 374         fputs (" [", outfile);
 375         if (NULL != XVEC (in_rtx, i))
 376           {
 377             indent += 2;
 378             if (XVECLEN (in_rtx, i))
 379               sawclose = 1;
 380
 381             for (j = 0; j < XVECLEN (in_rtx, i); j++)
 382               print_rtx (XVECEXP (in_rtx, i, j));
 383
 384             indent -= 2;
 385           }
 386         if (sawclose)
 387           fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
 388
 389         fputs ("]", outfile);
 390         sawclose = 1;
 391         indent -= 2;
 392         break;
 393
 394       case 'w':
 395         if (! flag_simple)
 396           fprintf (outfile, " ");
 397         fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
 398         if (! flag_simple)
 399           fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
 400                    (unsigned HOST_WIDE_INT) XWINT (in_rtx, i));
 401         break;
 402
 403       case 'i':
 404         if (i == 4 && INSN_P (in_rtx))
 405           {
 406 #ifndef GENERATOR_FILE
 407             const rtx_insn *in_insn = as_a <const rtx_insn *> (in_rtx);
 408
 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_HAS_LOCATION (in_insn))
 413               {
 414                 expanded_location xloc = insn_location (in_insn);
 415                 fprintf (outfile, " %s:%i", xloc.file, xloc.line);
 416               }
 417 #endif
 418           }
 419         else if (i == 6 && GET_CODE (in_rtx) == ASM_OPERANDS)
 420           {
 421 #ifndef GENERATOR_FILE
 422             if (ASM_OPERANDS_SOURCE_LOCATION (in_rtx) != UNKNOWN_LOCATION)
 423               fprintf (outfile, " %s:%i",
 424                        LOCATION_FILE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)),
 425                        LOCATION_LINE (ASM_OPERANDS_SOURCE_LOCATION (in_rtx)));
 426 #endif
 427           }
 428         else if (i == 1 && GET_CODE (in_rtx) == ASM_INPUT)
 429           {
 430 #ifndef GENERATOR_FILE
 431             if (ASM_INPUT_SOURCE_LOCATION (in_rtx) != UNKNOWN_LOCATION)
 432               fprintf (outfile, " %s:%i",
 433                        LOCATION_FILE (ASM_INPUT_SOURCE_LOCATION (in_rtx)),
 434                        LOCATION_LINE (ASM_INPUT_SOURCE_LOCATION (in_rtx)));
 435 #endif
 436           }
 437         else if (i == 5 && NOTE_P (in_rtx))
 438           {
 439             /* This field is only used for NOTE_INSN_DELETED_LABEL, and
 440                other times often contains garbage from INSN->NOTE death.  */
 441             if (NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_LABEL
 442                 || NOTE_KIND (in_rtx) == NOTE_INSN_DELETED_DEBUG_LABEL)
 443               fprintf (outfile, " %d",  XINT (in_rtx, i));
 444           }
 445 #if !defined(GENERATOR_FILE) && NUM_UNSPECV_VALUES > 0
 446         else if (i == 1
 447                  && GET_CODE (in_rtx) == UNSPEC_VOLATILE
 448                  && XINT (in_rtx, 1) >= 0
 449                  && XINT (in_rtx, 1) < NUM_UNSPECV_VALUES)
 450           fprintf (outfile, " %s", unspecv_strings[XINT (in_rtx, 1)]);
 451 #endif
 452 #if !defined(GENERATOR_FILE) && NUM_UNSPEC_VALUES > 0
 453         else if (i == 1
 454                  && (GET_CODE (in_rtx) == UNSPEC
 455                      || GET_CODE (in_rtx) == UNSPEC_VOLATILE)
 456                  && XINT (in_rtx, 1) >= 0
 457                  && XINT (in_rtx, 1) < NUM_UNSPEC_VALUES)
 458           fprintf (outfile, " %s", unspec_strings[XINT (in_rtx, 1)]);
 459 #endif
 460         else
 461           {
 462             int value = XINT (in_rtx, i);
 463             const char *name;
 464
 465             if (flag_dump_unnumbered
 466                 && (is_insn || NOTE_P (in_rtx)))
 467               fputc ('#', outfile);
 468             else
 469               fprintf (outfile, " %d", value);
 470
 471             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 472                 && XINT (in_rtx, i) >= 0
 473                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 474               fprintf (outfile, " {%s}", name);
 475             sawclose = 0;
 476           }
 477         break;
 478
 479       case 'r':
 480         {
 481           unsigned int regno = REGNO (in_rtx);
 482 #ifndef GENERATOR_FILE
 483           if (regno < FIRST_PSEUDO_REGISTER)
 484             fprintf (outfile, " %d %s", regno, reg_names[regno]);
 485           else if (regno <= LAST_VIRTUAL_REGISTER)
 486             {
 487               if (regno == VIRTUAL_INCOMING_ARGS_REGNUM)
 488                 fprintf (outfile, " %d virtual-incoming-args", regno);
 489               else if (regno == VIRTUAL_STACK_VARS_REGNUM)
 490                 fprintf (outfile, " %d virtual-stack-vars", regno);
 491               else if (regno == VIRTUAL_STACK_DYNAMIC_REGNUM)
 492                 fprintf (outfile, " %d virtual-stack-dynamic", regno);
 493               else if (regno == VIRTUAL_OUTGOING_ARGS_REGNUM)
 494                 fprintf (outfile, " %d virtual-outgoing-args", regno);
 495               else if (regno == VIRTUAL_CFA_REGNUM)
 496                 fprintf (outfile, " %d virtual-cfa", regno);
 497               else if (regno == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 498                 fprintf (outfile, " %d virtual-preferred-stack-boundary",
 499                          regno);
 500               else
 501                 fprintf (outfile, " %d virtual-reg-%d", regno,
 502                          regno-FIRST_VIRTUAL_REGISTER);
 503             }
 504           else
 505 #endif
 506             if (flag_dump_unnumbered && is_insn)
 507               fputc ('#', outfile);
 508             else
 509               fprintf (outfile, " %d", regno);
 510
 511 #ifndef GENERATOR_FILE
 512           if (REG_ATTRS (in_rtx))
 513             {
 514               fputs (" [", outfile);
 515               if (regno != ORIGINAL_REGNO (in_rtx))
 516                 fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 517               if (REG_EXPR (in_rtx))
 518                 print_mem_expr (outfile, REG_EXPR (in_rtx));
 519
 520               if (REG_OFFSET (in_rtx))
 521                 fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 522                          REG_OFFSET (in_rtx));
 523               fputs (" ]", outfile);
 524             }
 525           if (regno != ORIGINAL_REGNO (in_rtx))
 526             fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
 527 #endif
 528           break;
 529         }
 530
 531       /* Print NOTE_INSN names rather than integer codes.  */
 532
 533       case 'n':
 534         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 535         sawclose = 0;
 536         break;
 537
 538       case 'u':
 539         if (XEXP (in_rtx, i) != NULL)
 540           {
 541             rtx sub = XEXP (in_rtx, i);
 542             enum rtx_code subc = GET_CODE (sub);
 543
 544             if (GET_CODE (in_rtx) == LABEL_REF)
 545               {
 546                 if (subc == NOTE
 547                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 548                   {
 549                     if (flag_dump_unnumbered)
 550                       fprintf (outfile, " [# deleted]");
 551                     else
 552                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 553                     sawclose = 0;
 554                     break;
 555                   }
 556
 557                 if (subc != CODE_LABEL)
 558                   goto do_e;
 559               }
 560
 561             if (flag_dump_unnumbered
 562                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 563                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 564                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 565               fputs (" #", outfile);
 566             else
 567               fprintf (outfile, " %d", INSN_UID (sub));
 568           }
 569         else
 570           fputs (" 0", outfile);
 571         sawclose = 0;
 572         break;
 573
 574       case 't':
 575 #ifndef GENERATOR_FILE
 576         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 577           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 578         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_PARAMETER_REF)
 579           print_mem_expr (outfile, DEBUG_PARAMETER_REF_DECL (in_rtx));
 580         else
 581           dump_addr (outfile, " ", XTREE (in_rtx, i));
 582 #endif
 583         break;
 584
 585       case '*':
 586         fputs (" Unknown", outfile);
 587         sawclose = 0;
 588         break;
 589
 590       case 'B':
 591 #ifndef GENERATOR_FILE
 592         if (XBBDEF (in_rtx, i))
 593           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 594 #endif
 595         break;
 596
 597       default:
 598         gcc_unreachable ();
 599       }
 600
 601   switch (GET_CODE (in_rtx))
 602     {
 603 #ifndef GENERATOR_FILE
 604     case MEM:
 605       if (__builtin_expect (final_insns_dump_p, false))
 606         fprintf (outfile, " [");
 607       else
 608         fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 609                  (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 610
 611       if (MEM_EXPR (in_rtx))
 612         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 613       else
 614         fputc (' ', outfile);
 615
 616       if (MEM_OFFSET_KNOWN_P (in_rtx))
 617         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC, MEM_OFFSET (in_rtx));
 618
 619       if (MEM_SIZE_KNOWN_P (in_rtx))
 620         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC, MEM_SIZE (in_rtx));
 621
 622       if (MEM_ALIGN (in_rtx) != 1)
 623         fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
 624
 625       if (!ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (in_rtx)))
 626         fprintf (outfile, " AS%u", MEM_ADDR_SPACE (in_rtx));
 627
 628       fputc (']', outfile);
 629       break;
 630
 631     case CONST_DOUBLE:
 632       if (FLOAT_MODE_P (GET_MODE (in_rtx)))
 633         {
 634           char s[60];
 635
 636           real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 637                            sizeof (s), 0, 1);
 638           fprintf (outfile, " %s", s);
 639
 640           real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 641                                sizeof (s), 0, 1);
 642           fprintf (outfile, " [%s]", s);
 643         }
 644       break;
 645
 646     case CONST_WIDE_INT:
 647       fprintf (outfile, " ");
 648       cwi_output_hex (outfile, in_rtx);
 649       break;
 650 #endif
 651
 652     case CODE_LABEL:
 653       fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
 654       switch (LABEL_KIND (in_rtx))
 655         {
 656           case LABEL_NORMAL: break;
 657           case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
 658           case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
 659           case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
 660           default: gcc_unreachable ();
 661         }
 662       break;
 663
 664     default:
 665       break;
 666     }
 667
 668   fputc (')', outfile);
 669   sawclose = 1;
 670 }
 671
 672 /* Print an rtx on the current line of FILE.  Initially indent IND
 673    characters.  */
 674
 675 void
 676 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 677 {
 678   int oldsaw = sawclose;
 679   int oldindent = indent;
 680
 681   sawclose = 0;
 682   indent = ind;
 683   outfile = outf;
 684   print_rtx (x);
 685   sawclose = oldsaw;
 686   indent = oldindent;
 687 }
 688
 689 /* Call this function from the debugger to see what X looks like.  */
 690
 691 DEBUG_FUNCTION void
 692 debug_rtx (const_rtx x)
 693 {
 694   outfile = stderr;
 695   sawclose = 0;
 696   print_rtx (x);
 697   fprintf (stderr, "\n");
 698 }
 699
 700 /* Dump rtx REF.  */
 701
 702 DEBUG_FUNCTION void
 703 debug (const rtx_def &ref)
 704 {
 705   debug_rtx (&ref);
 706 }
 707
 708 DEBUG_FUNCTION void
 709 debug (const rtx_def *ptr)
 710 {
 711   if (ptr)
 712     debug (*ptr);
 713   else
 714     fprintf (stderr, "<nil>\n");
 715 }
 716
 717 /* Count of rtx's to print with debug_rtx_list.
 718    This global exists because gdb user defined commands have no arguments.  */
 719
 720 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 721
 722 /* Call this function to print list from X on.
 723
 724    N is a count of the rtx's to print. Positive values print from the specified
 725    rtx_insn on.  Negative values print a window around the rtx_insn.
 726    EG: -5 prints 2 rtx_insn's on either side (in addition to the specified
 727    rtx_insn).  */
 728
 729 DEBUG_FUNCTION void
 730 debug_rtx_list (const rtx_insn *x, int n)
 731 {
 732   int i,count;
 733   const rtx_insn *insn;
 734
 735   count = n == 0 ? 1 : n < 0 ? -n : n;
 736
 737   /* If we are printing a window, back up to the start.  */
 738
 739   if (n < 0)
 740     for (i = count / 2; i > 0; i--)
 741       {
 742         if (PREV_INSN (x) == 0)
 743           break;
 744         x = PREV_INSN (x);
 745       }
 746
 747   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 748     {
 749       debug_rtx (insn);
 750       fprintf (stderr, "\n");
 751     }
 752 }
 753
 754 /* Call this function to print an rtx_insn list from START to END
 755    inclusive.  */
 756
 757 DEBUG_FUNCTION void
 758 debug_rtx_range (const rtx_insn *start, const rtx_insn *end)
 759 {
 760   while (1)
 761     {
 762       debug_rtx (start);
 763       fprintf (stderr, "\n");
 764       if (!start || start == end)
 765         break;
 766       start = NEXT_INSN (start);
 767     }
 768 }
 769
 770 /* Call this function to search an rtx_insn list to find one with insn uid UID,
 771    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 772    The found insn is returned to enable further debugging analysis.  */
 773
 774 DEBUG_FUNCTION const_rtx
 775 debug_rtx_find (const rtx_insn *x, int uid)
 776 {
 777   while (x != 0 && INSN_UID (x) != uid)
 778     x = NEXT_INSN (x);
 779   if (x != 0)
 780     {
 781       debug_rtx_list (x, debug_rtx_count);
 782       return x;
 783     }
 784   else
 785     {
 786       fprintf (stderr, "insn uid %d not found\n", uid);
 787       return 0;
 788     }
 789 }
 790
 791 /* External entry point for printing a chain of insns
 792    starting with RTX_FIRST onto file OUTF.
 793    A blank line separates insns.
 794
 795    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 796
 797 void
 798 print_rtl (FILE *outf, const_rtx rtx_first)
 799 {
 800   const rtx_insn *tmp_rtx;
 801
 802   outfile = outf;
 803   sawclose = 0;
 804
 805   if (rtx_first == 0)
 806     {
 807       fputs (print_rtx_head, outf);
 808       fputs ("(nil)\n", outf);
 809     }
 810   else
 811     switch (GET_CODE (rtx_first))
 812       {
 813       case INSN:
 814       case JUMP_INSN:
 815       case CALL_INSN:
 816       case NOTE:
 817       case CODE_LABEL:
 818       case JUMP_TABLE_DATA:
 819       case BARRIER:
 820         for (tmp_rtx = as_a <const rtx_insn *> (rtx_first);
 821              tmp_rtx != 0;
 822              tmp_rtx = NEXT_INSN (tmp_rtx))
 823           {
 824             fputs (print_rtx_head, outfile);
 825             print_rtx (tmp_rtx);
 826             fprintf (outfile, "\n");
 827           }
 828         break;
 829
 830       default:
 831         fputs (print_rtx_head, outfile);
 832         print_rtx (rtx_first);
 833       }
 834 }
 835
 836 /* Like print_rtx, except specify a file.  */
 837 /* Return nonzero if we actually printed anything.  */
 838
 839 int
 840 print_rtl_single (FILE *outf, const_rtx x)
 841 {
 842   return print_rtl_single_with_indent (outf, x, 0);
 843 }
 844
 845 /* Like print_rtl_single, except specify a file and indentation.  */
 846
 847 int
 848 print_rtl_single_with_indent (FILE *outf, const_rtx x, int ind)
 849 {
 850   int old_indent = indent;
 851   char *s_indent = (char *) alloca ((size_t) ind + 1);
 852   memset ((void *) s_indent, ' ', (size_t) ind);
 853   s_indent[ind] = '\0';
 854
 855   indent = ind;
 856   outfile = outf;
 857   sawclose = 0;
 858   fputs (s_indent, outfile);
 859   fputs (print_rtx_head, outfile);
 860   print_rtx (x);
 861   putc ('\n', outf);
 862   indent = old_indent;
 863   return 1;
 864 }
 865
 866
 867 /* Like print_rtl except without all the detail; for example,
 868    if RTX is a CONST_INT then print in decimal format.  */
 869
 870 void
 871 print_simple_rtl (FILE *outf, const_rtx x)
 872 {
 873   flag_simple = 1;
 874   print_rtl (outf, x);
 875   flag_simple = 0;
 876 }