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 #ifndef GENERATOR_FILE
 466             if (REG_P (in_rtx) && (unsigned) value < FIRST_PSEUDO_REGISTER)
 467               fprintf (outfile, " %d %s", value, reg_names[value]);
 468             else if (REG_P (in_rtx)
 469                      && (unsigned) value <= LAST_VIRTUAL_REGISTER)
 470               {
 471                 if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
 472                   fprintf (outfile, " %d virtual-incoming-args", value);
 473                 else if (value == VIRTUAL_STACK_VARS_REGNUM)
 474                   fprintf (outfile, " %d virtual-stack-vars", value);
 475                 else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
 476                   fprintf (outfile, " %d virtual-stack-dynamic", value);
 477                 else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
 478                   fprintf (outfile, " %d virtual-outgoing-args", value);
 479                 else if (value == VIRTUAL_CFA_REGNUM)
 480                   fprintf (outfile, " %d virtual-cfa", value);
 481                 else if (value == VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM)
 482                   fprintf (outfile, " %d virtual-preferred-stack-boundary",
 483                            value);
 484                 else
 485                   fprintf (outfile, " %d virtual-reg-%d", value,
 486                            value-FIRST_VIRTUAL_REGISTER);
 487               }
 488             else
 489 #endif
 490               if (flag_dump_unnumbered
 491                      && (is_insn || NOTE_P (in_rtx)))
 492               fputc ('#', outfile);
 493             else
 494               fprintf (outfile, " %d", value);
 495
 496 #ifndef GENERATOR_FILE
 497             if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
 498               {
 499                 fputs (" [", outfile);
 500                 if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
 501                   fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
 502                 if (REG_EXPR (in_rtx))
 503                   print_mem_expr (outfile, REG_EXPR (in_rtx));
 504
 505                 if (REG_OFFSET (in_rtx))
 506                   fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
 507                            REG_OFFSET (in_rtx));
 508                 fputs (" ]", outfile);
 509               }
 510             if (REG_P (in_rtx) && REGNO (in_rtx) != ORIGINAL_REGNO (in_rtx))
 511               fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
 512 #endif
 513
 514             if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
 515                 && XINT (in_rtx, i) >= 0
 516                 && (name = get_insn_name (XINT (in_rtx, i))) != NULL)
 517               fprintf (outfile, " {%s}", name);
 518             sawclose = 0;
 519           }
 520         break;
 521
 522       /* Print NOTE_INSN names rather than integer codes.  */
 523
 524       case 'n':
 525         fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
 526         sawclose = 0;
 527         break;
 528
 529       case 'u':
 530         if (XEXP (in_rtx, i) != NULL)
 531           {
 532             rtx sub = XEXP (in_rtx, i);
 533             enum rtx_code subc = GET_CODE (sub);
 534
 535             if (GET_CODE (in_rtx) == LABEL_REF)
 536               {
 537                 if (subc == NOTE
 538                     && NOTE_KIND (sub) == NOTE_INSN_DELETED_LABEL)
 539                   {
 540                     if (flag_dump_unnumbered)
 541                       fprintf (outfile, " [# deleted]");
 542                     else
 543                       fprintf (outfile, " [%d deleted]", INSN_UID (sub));
 544                     sawclose = 0;
 545                     break;
 546                   }
 547
 548                 if (subc != CODE_LABEL)
 549                   goto do_e;
 550               }
 551
 552             if (flag_dump_unnumbered
 553                 || (flag_dump_unnumbered_links && (i == 1 || i == 2)
 554                     && (INSN_P (in_rtx) || NOTE_P (in_rtx)
 555                         || LABEL_P (in_rtx) || BARRIER_P (in_rtx))))
 556               fputs (" #", outfile);
 557             else
 558               fprintf (outfile, " %d", INSN_UID (sub));
 559           }
 560         else
 561           fputs (" 0", outfile);
 562         sawclose = 0;
 563         break;
 564
 565       case 't':
 566 #ifndef GENERATOR_FILE
 567         if (i == 0 && GET_CODE (in_rtx) == DEBUG_IMPLICIT_PTR)
 568           print_mem_expr (outfile, DEBUG_IMPLICIT_PTR_DECL (in_rtx));
 569         else if (i == 0 && GET_CODE (in_rtx) == DEBUG_PARAMETER_REF)
 570           print_mem_expr (outfile, DEBUG_PARAMETER_REF_DECL (in_rtx));
 571         else
 572           dump_addr (outfile, " ", XTREE (in_rtx, i));
 573 #endif
 574         break;
 575
 576       case '*':
 577         fputs (" Unknown", outfile);
 578         sawclose = 0;
 579         break;
 580
 581       case 'B':
 582 #ifndef GENERATOR_FILE
 583         if (XBBDEF (in_rtx, i))
 584           fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
 585 #endif
 586         break;
 587
 588       default:
 589         gcc_unreachable ();
 590       }
 591
 592   switch (GET_CODE (in_rtx))
 593     {
 594 #ifndef GENERATOR_FILE
 595     case MEM:
 596       if (__builtin_expect (final_insns_dump_p, false))
 597         fprintf (outfile, " [");
 598       else
 599         fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC,
 600                  (HOST_WIDE_INT) MEM_ALIAS_SET (in_rtx));
 601
 602       if (MEM_EXPR (in_rtx))
 603         print_mem_expr (outfile, MEM_EXPR (in_rtx));
 604       else
 605         fputc (' ', outfile);
 606
 607       if (MEM_OFFSET_KNOWN_P (in_rtx))
 608         fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC, MEM_OFFSET (in_rtx));
 609
 610       if (MEM_SIZE_KNOWN_P (in_rtx))
 611         fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC, MEM_SIZE (in_rtx));
 612
 613       if (MEM_ALIGN (in_rtx) != 1)
 614         fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
 615
 616       if (!ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (in_rtx)))
 617         fprintf (outfile, " AS%u", MEM_ADDR_SPACE (in_rtx));
 618
 619       fputc (']', outfile);
 620       break;
 621
 622     case CONST_DOUBLE:
 623       if (FLOAT_MODE_P (GET_MODE (in_rtx)))
 624         {
 625           char s[60];
 626
 627           real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 628                            sizeof (s), 0, 1);
 629           fprintf (outfile, " %s", s);
 630
 631           real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
 632                                sizeof (s), 0, 1);
 633           fprintf (outfile, " [%s]", s);
 634         }
 635       break;
 636
 637     case CONST_WIDE_INT:
 638       fprintf (outfile, " ");
 639       cwi_output_hex (outfile, in_rtx);
 640       break;
 641 #endif
 642
 643     case CODE_LABEL:
 644       fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
 645       switch (LABEL_KIND (in_rtx))
 646         {
 647           case LABEL_NORMAL: break;
 648           case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
 649           case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
 650           case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
 651           default: gcc_unreachable ();
 652         }
 653       break;
 654
 655     default:
 656       break;
 657     }
 658
 659   fputc (')', outfile);
 660   sawclose = 1;
 661 }
 662
 663 /* Print an rtx on the current line of FILE.  Initially indent IND
 664    characters.  */
 665
 666 void
 667 print_inline_rtx (FILE *outf, const_rtx x, int ind)
 668 {
 669   int oldsaw = sawclose;
 670   int oldindent = indent;
 671
 672   sawclose = 0;
 673   indent = ind;
 674   outfile = outf;
 675   print_rtx (x);
 676   sawclose = oldsaw;
 677   indent = oldindent;
 678 }
 679
 680 /* Call this function from the debugger to see what X looks like.  */
 681
 682 DEBUG_FUNCTION void
 683 debug_rtx (const_rtx x)
 684 {
 685   outfile = stderr;
 686   sawclose = 0;
 687   print_rtx (x);
 688   fprintf (stderr, "\n");
 689 }
 690
 691 /* Dump rtx REF.  */
 692
 693 DEBUG_FUNCTION void
 694 debug (const rtx_def &ref)
 695 {
 696   debug_rtx (&ref);
 697 }
 698
 699 DEBUG_FUNCTION void
 700 debug (const rtx_def *ptr)
 701 {
 702   if (ptr)
 703     debug (*ptr);
 704   else
 705     fprintf (stderr, "<nil>\n");
 706 }
 707
 708 /* Count of rtx's to print with debug_rtx_list.
 709    This global exists because gdb user defined commands have no arguments.  */
 710
 711 DEBUG_VARIABLE int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
 712
 713 /* Call this function to print list from X on.
 714
 715    N is a count of the rtx's to print. Positive values print from the specified
 716    rtx_insn on.  Negative values print a window around the rtx_insn.
 717    EG: -5 prints 2 rtx_insn's on either side (in addition to the specified
 718    rtx_insn).  */
 719
 720 DEBUG_FUNCTION void
 721 debug_rtx_list (const rtx_insn *x, int n)
 722 {
 723   int i,count;
 724   const rtx_insn *insn;
 725
 726   count = n == 0 ? 1 : n < 0 ? -n : n;
 727
 728   /* If we are printing a window, back up to the start.  */
 729
 730   if (n < 0)
 731     for (i = count / 2; i > 0; i--)
 732       {
 733         if (PREV_INSN (x) == 0)
 734           break;
 735         x = PREV_INSN (x);
 736       }
 737
 738   for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
 739     {
 740       debug_rtx (insn);
 741       fprintf (stderr, "\n");
 742     }
 743 }
 744
 745 /* Call this function to print an rtx_insn list from START to END
 746    inclusive.  */
 747
 748 DEBUG_FUNCTION void
 749 debug_rtx_range (const rtx_insn *start, const rtx_insn *end)
 750 {
 751   while (1)
 752     {
 753       debug_rtx (start);
 754       fprintf (stderr, "\n");
 755       if (!start || start == end)
 756         break;
 757       start = NEXT_INSN (start);
 758     }
 759 }
 760
 761 /* Call this function to search an rtx_insn list to find one with insn uid UID,
 762    and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
 763    The found insn is returned to enable further debugging analysis.  */
 764
 765 DEBUG_FUNCTION const_rtx
 766 debug_rtx_find (const rtx_insn *x, int uid)
 767 {
 768   while (x != 0 && INSN_UID (x) != uid)
 769     x = NEXT_INSN (x);
 770   if (x != 0)
 771     {
 772       debug_rtx_list (x, debug_rtx_count);
 773       return x;
 774     }
 775   else
 776     {
 777       fprintf (stderr, "insn uid %d not found\n", uid);
 778       return 0;
 779     }
 780 }
 781
 782 /* External entry point for printing a chain of insns
 783    starting with RTX_FIRST onto file OUTF.
 784    A blank line separates insns.
 785
 786    If RTX_FIRST is not an insn, then it alone is printed, with no newline.  */
 787
 788 void
 789 print_rtl (FILE *outf, const_rtx rtx_first)
 790 {
 791   const rtx_insn *tmp_rtx;
 792
 793   outfile = outf;
 794   sawclose = 0;
 795
 796   if (rtx_first == 0)
 797     {
 798       fputs (print_rtx_head, outf);
 799       fputs ("(nil)\n", outf);
 800     }
 801   else
 802     switch (GET_CODE (rtx_first))
 803       {
 804       case INSN:
 805       case JUMP_INSN:
 806       case CALL_INSN:
 807       case NOTE:
 808       case CODE_LABEL:
 809       case JUMP_TABLE_DATA:
 810       case BARRIER:
 811         for (tmp_rtx = as_a <const rtx_insn *> (rtx_first);
 812              tmp_rtx != 0;
 813              tmp_rtx = NEXT_INSN (tmp_rtx))
 814           {
 815             fputs (print_rtx_head, outfile);
 816             print_rtx (tmp_rtx);
 817             fprintf (outfile, "\n");
 818           }
 819         break;
 820
 821       default:
 822         fputs (print_rtx_head, outfile);
 823         print_rtx (rtx_first);
 824       }
 825 }
 826
 827 /* Like print_rtx, except specify a file.  */
 828 /* Return nonzero if we actually printed anything.  */
 829
 830 int
 831 print_rtl_single (FILE *outf, const_rtx x)
 832 {
 833   return print_rtl_single_with_indent (outf, x, 0);
 834 }
 835
 836 /* Like print_rtl_single, except specify a file and indentation.  */
 837
 838 int
 839 print_rtl_single_with_indent (FILE *outf, const_rtx x, int ind)
 840 {
 841   int old_indent = indent;
 842   char *s_indent = (char *) alloca ((size_t) ind + 1);
 843   memset ((void *) s_indent, ' ', (size_t) ind);
 844   s_indent[ind] = '\0';
 845
 846   indent = ind;
 847   outfile = outf;
 848   sawclose = 0;
 849   fputs (s_indent, outfile);
 850   fputs (print_rtx_head, outfile);
 851   print_rtx (x);
 852   putc ('\n', outf);
 853   indent = old_indent;
 854   return 1;
 855 }
 856
 857
 858 /* Like print_rtl except without all the detail; for example,
 859    if RTX is a CONST_INT then print in decimal format.  */
 860
 861 void
 862 print_simple_rtl (FILE *outf, const_rtx x)
 863 {
 864   flag_simple = 1;
 865   print_rtl (outf, x);
 866   flag_simple = 0;
 867 }