gcc/print-tree.c

   1 /* Prints out tree in human readable form - GNU C-compiler
   2    Copyright (C) 1990, 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22
  23 #include "config.h"
  24 #include "system.h"
  25 #include "tree.h"
  26 #include "ggc.h"
  27
  28 /* Define the hash table of nodes already seen.
  29    Such nodes are not repeated; brief cross-references are used.  */
  30
  31 #define HASH_SIZE 37
  32
  33 struct bucket
  34 {
  35   tree node;
  36   struct bucket *next;
  37 };
  38
  39 static struct bucket **table;
  40
  41 /* Print the node NODE on standard error, for debugging.
  42    Most nodes referred to by this one are printed recursively
  43    down to a depth of six.  */
  44
  45 void
  46 debug_tree (node)
  47      tree node;
  48 {
  49   table = (struct bucket **) permalloc (HASH_SIZE * sizeof (struct bucket *));
  50   memset ((char *) table, 0, HASH_SIZE * sizeof (struct bucket *));
  51   print_node (stderr, "", node, 0);
  52   table = 0;
  53   fprintf (stderr, "\n");
  54 }
  55
  56 /* Print a node in brief fashion, with just the code, address and name.  */
  57
  58 void
  59 print_node_brief (file, prefix, node, indent)
  60      FILE *file;
  61      const char *prefix;
  62      tree node;
  63      int indent;
  64 {
  65   char class;
  66
  67   if (node == 0)
  68     return;
  69
  70   class = TREE_CODE_CLASS (TREE_CODE (node));
  71
  72   /* Always print the slot this node is in, and its code, address and
  73      name if any.  */
  74   if (indent > 0)
  75     fprintf (file, " ");
  76   fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
  77   fprintf (file, HOST_PTR_PRINTF, (char *) node);
  78
  79   if (class == 'd')
  80     {
  81       if (DECL_NAME (node))
  82         fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
  83     }
  84   else if (class == 't')
  85     {
  86       if (TYPE_NAME (node))
  87         {
  88           if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
  89             fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
  90           else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
  91                    && DECL_NAME (TYPE_NAME (node)))
  92             fprintf (file, " %s",
  93                      IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
  94         }
  95     }
  96   if (TREE_CODE (node) == IDENTIFIER_NODE)
  97     fprintf (file, " %s", IDENTIFIER_POINTER (node));
  98
  99   /* We might as well always print the value of an integer or real.  */
 100   if (TREE_CODE (node) == INTEGER_CST)
 101     {
 102       if (TREE_CONSTANT_OVERFLOW (node))
 103         fprintf (file, " overflow");
 104
 105       fprintf (file, " ");
 106       if (TREE_INT_CST_HIGH (node) == 0)
 107         fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED, TREE_INT_CST_LOW (node));
 108       else if (TREE_INT_CST_HIGH (node) == -1
 109                && TREE_INT_CST_LOW (node) != 0)
 110         {
 111           fprintf (file, "-");
 112           fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
 113                    -TREE_INT_CST_LOW (node));
 114         }
 115       else
 116         fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
 117                  TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
 118     }
 119   if (TREE_CODE (node) == REAL_CST)
 120     {
 121       REAL_VALUE_TYPE d;
 122
 123       if (TREE_OVERFLOW (node))
 124         fprintf (file, " overflow");
 125
 126 #if !defined(REAL_IS_NOT_DOUBLE) || defined(REAL_ARITHMETIC)
 127       d = TREE_REAL_CST (node);
 128       if (REAL_VALUE_ISINF (d))
 129         fprintf (file, " Inf");
 130       else if (REAL_VALUE_ISNAN (d))
 131         fprintf (file, " Nan");
 132       else
 133         {
 134           char string[100];
 135
 136           REAL_VALUE_TO_DECIMAL (d, "%e", string);
 137           fprintf (file, " %s", string);
 138         }
 139 #else
 140       {
 141         int i;
 142         unsigned char *p = (unsigned char *) &TREE_REAL_CST (node);
 143         fprintf (file, " 0x");
 144         for (i = 0; i < sizeof TREE_REAL_CST (node); i++)
 145           fprintf (file, "%02x", *p++);
 146         fprintf (file, "");
 147       }
 148 #endif
 149     }
 150
 151   fprintf (file, ">");
 152 }
 153
 154 void
 155 indent_to (file, column)
 156      FILE *file;
 157      int column;
 158 {
 159   int i;
 160
 161   /* Since this is the long way, indent to desired column.  */
 162   if (column > 0)
 163     fprintf (file, "\n");
 164   for (i = 0; i < column; i++)
 165     fprintf (file, " ");
 166 }
 167 \f
 168 /* Print the node NODE in full on file FILE, preceded by PREFIX,
 169    starting in column INDENT.  */
 170
 171 void
 172 print_node (file, prefix, node, indent)
 173      FILE *file;
 174      const char *prefix;
 175      tree node;
 176      int indent;
 177 {
 178   int hash;
 179   struct bucket *b;
 180   enum machine_mode mode;
 181   char class;
 182   int len;
 183   int first_rtl;
 184   int i;
 185
 186   if (node == 0)
 187     return;
 188
 189   class = TREE_CODE_CLASS (TREE_CODE (node));
 190
 191   /* Don't get too deep in nesting.  If the user wants to see deeper,
 192      it is easy to use the address of a lowest-level node
 193      as an argument in another call to debug_tree.  */
 194
 195   if (indent > 24)
 196     {
 197       print_node_brief (file, prefix, node, indent);
 198       return;
 199     }
 200
 201   if (indent > 8 && (class == 't' || class == 'd'))
 202     {
 203       print_node_brief (file, prefix, node, indent);
 204       return;
 205     }
 206
 207   /* It is unsafe to look at any other filds of an ERROR_MARK node.  */
 208   if (TREE_CODE (node) == ERROR_MARK)
 209     {
 210       print_node_brief (file, prefix, node, indent);
 211       return;
 212     }
 213
 214   hash = ((unsigned long) node) % HASH_SIZE;
 215
 216   /* If node is in the table, just mention its address.  */
 217   for (b = table[hash]; b; b = b->next)
 218     if (b->node == node)
 219       {
 220         print_node_brief (file, prefix, node, indent);
 221         return;
 222       }
 223
 224   /* Add this node to the table.  */
 225   b = (struct bucket *) permalloc (sizeof (struct bucket));
 226   b->node = node;
 227   b->next = table[hash];
 228   table[hash] = b;
 229
 230   /* Indent to the specified column, since this is the long form.  */
 231   indent_to (file, indent);
 232
 233   /* Print the slot this node is in, and its code, and address.  */
 234   fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
 235   fprintf (file, HOST_PTR_PRINTF, (char *) node);
 236
 237   /* Print the name, if any.  */
 238   if (class == 'd')
 239     {
 240       if (DECL_NAME (node))
 241         fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
 242     }
 243   else if (class == 't')
 244     {
 245       if (TYPE_NAME (node))
 246         {
 247           if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
 248             fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
 249           else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
 250                    && DECL_NAME (TYPE_NAME (node)))
 251             fprintf (file, " %s",
 252                      IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
 253         }
 254     }
 255   if (TREE_CODE (node) == IDENTIFIER_NODE)
 256     fprintf (file, " %s", IDENTIFIER_POINTER (node));
 257
 258   if (TREE_CODE (node) == INTEGER_CST)
 259     {
 260       if (indent <= 4)
 261         print_node_brief (file, "type", TREE_TYPE (node), indent + 4);
 262     }
 263   else
 264     {
 265       print_node (file, "type", TREE_TYPE (node), indent + 4);
 266       if (TREE_TYPE (node))
 267         indent_to (file, indent + 3);
 268     }
 269
 270   if (TREE_SIDE_EFFECTS (node))
 271     fputs (" side-effects", file);
 272   if (TREE_READONLY (node))
 273     fputs (" readonly", file);
 274   if (TREE_CONSTANT (node))
 275     fputs (" constant", file);
 276   if (TREE_ADDRESSABLE (node))
 277     fputs (" addressable", file);
 278   if (TREE_THIS_VOLATILE (node))
 279     fputs (" volatile", file);
 280   if (TREE_UNSIGNED (node))
 281     fputs (" unsigned", file);
 282   if (TREE_ASM_WRITTEN (node))
 283     fputs (" asm_written", file);
 284   if (TREE_USED (node))
 285     fputs (" used", file);
 286   if (TREE_NOTHROW (node))
 287     fputs (" nothrow", file);
 288   if (TREE_PUBLIC (node))
 289     fputs (" public", file);
 290   if (TREE_PRIVATE (node))
 291     fputs (" private", file);
 292   if (TREE_PROTECTED (node))
 293     fputs (" protected", file);
 294   if (TREE_STATIC (node))
 295     fputs (" static", file);
 296   if (TREE_LANG_FLAG_0 (node))
 297     fputs (" tree_0", file);
 298   if (TREE_LANG_FLAG_1 (node))
 299     fputs (" tree_1", file);
 300   if (TREE_LANG_FLAG_2 (node))
 301     fputs (" tree_2", file);
 302   if (TREE_LANG_FLAG_3 (node))
 303     fputs (" tree_3", file);
 304   if (TREE_LANG_FLAG_4 (node))
 305     fputs (" tree_4", file);
 306   if (TREE_LANG_FLAG_5 (node))
 307     fputs (" tree_5", file);
 308   if (TREE_LANG_FLAG_6 (node))
 309     fputs (" tree_6", file);
 310
 311   /* DECL_ nodes have additional attributes.  */
 312
 313   switch (TREE_CODE_CLASS (TREE_CODE (node)))
 314     {
 315     case 'd':
 316       mode = DECL_MODE (node);
 317
 318       if (DECL_IGNORED_P (node))
 319         fputs (" ignored", file);
 320       if (DECL_ABSTRACT (node))
 321         fputs (" abstract", file);
 322       if (DECL_IN_SYSTEM_HEADER (node))
 323         fputs (" in_system_header", file);
 324       if (DECL_COMMON (node))
 325         fputs (" common", file);
 326       if (DECL_EXTERNAL (node))
 327         fputs (" external", file);
 328       if (DECL_REGISTER (node) && TREE_CODE (node) != FIELD_DECL
 329           && TREE_CODE (node) != FUNCTION_DECL
 330           && TREE_CODE (node) != LABEL_DECL)
 331         fputs (" regdecl", file);
 332       if (DECL_NONLOCAL (node))
 333         fputs (" nonlocal", file);
 334
 335       if (TREE_CODE (node) == TYPE_DECL && TYPE_DECL_SUPPRESS_DEBUG (node))
 336         fputs (" suppress-debug", file);
 337
 338       if (TREE_CODE (node) == FUNCTION_DECL && DECL_INLINE (node))
 339         fputs (" inline", file);
 340       if (TREE_CODE (node) == FUNCTION_DECL && DECL_BUILT_IN (node))
 341         fputs (" built-in", file);
 342       if (TREE_CODE (node) == FUNCTION_DECL && DECL_BUILT_IN_NONANSI (node))
 343         fputs (" built-in-nonansi", file);
 344       if (TREE_CODE (node) == FUNCTION_DECL && DECL_NO_STATIC_CHAIN (node))
 345         fputs (" no-static-chain", file);
 346
 347       if (TREE_CODE (node) == FIELD_DECL && DECL_PACKED (node))
 348         fputs (" packed", file);
 349       if (TREE_CODE (node) == FIELD_DECL && DECL_BIT_FIELD (node))
 350         fputs (" bit-field", file);
 351       if (TREE_CODE (node) == FIELD_DECL && DECL_NONADDRESSABLE_P (node))
 352         fputs (" nonaddressable", file);
 353
 354       if (TREE_CODE (node) == LABEL_DECL && DECL_TOO_LATE (node))
 355         fputs (" too-late", file);
 356       if (TREE_CODE (node) == LABEL_DECL && DECL_ERROR_ISSUED (node))
 357         fputs (" error-issued", file);
 358
 359       if (TREE_CODE (node) == VAR_DECL && DECL_IN_TEXT_SECTION (node))
 360         fputs (" in-text-section", file);
 361
 362       if (TREE_CODE (node) == PARM_DECL && DECL_TRANSPARENT_UNION (node))
 363         fputs (" transparent-union", file);
 364
 365       if (DECL_VIRTUAL_P (node))
 366         fputs (" virtual", file);
 367       if (DECL_DEFER_OUTPUT (node))
 368         fputs (" defer-output", file);
 369
 370       if (DECL_LANG_FLAG_0 (node))
 371         fputs (" decl_0", file);
 372       if (DECL_LANG_FLAG_1 (node))
 373         fputs (" decl_1", file);
 374       if (DECL_LANG_FLAG_2 (node))
 375         fputs (" decl_2", file);
 376       if (DECL_LANG_FLAG_3 (node))
 377         fputs (" decl_3", file);
 378       if (DECL_LANG_FLAG_4 (node))
 379         fputs (" decl_4", file);
 380       if (DECL_LANG_FLAG_5 (node))
 381         fputs (" decl_5", file);
 382       if (DECL_LANG_FLAG_6 (node))
 383         fputs (" decl_6", file);
 384       if (DECL_LANG_FLAG_7 (node))
 385         fputs (" decl_7", file);
 386
 387       fprintf (file, " %s", GET_MODE_NAME(mode));
 388       fprintf (file, " file %s line %d",
 389                DECL_SOURCE_FILE (node), DECL_SOURCE_LINE (node));
 390
 391       print_node (file, "size", DECL_SIZE (node), indent + 4);
 392       print_node (file, "unit size", DECL_SIZE_UNIT (node), indent + 4);
 393
 394       if (TREE_CODE (node) != FUNCTION_DECL
 395           || DECL_INLINE (node) || DECL_BUILT_IN (node))
 396         indent_to (file, indent + 3);
 397
 398       if (TREE_CODE (node) != FUNCTION_DECL)
 399         {
 400           if (DECL_USER_ALIGN (node))
 401             fprintf (file, " user");
 402
 403           fprintf (file, " align %d", DECL_ALIGN (node));
 404           if (TREE_CODE (node) == FIELD_DECL)
 405             {
 406               fprintf (file, " offset_align ");
 407               fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
 408                        DECL_OFFSET_ALIGN (node));
 409             }
 410         }
 411       else if (DECL_BUILT_IN (node))
 412         {
 413           if (DECL_BUILT_IN_CLASS (node) == BUILT_IN_MD)
 414             fprintf (file, " built-in BUILT_IN_MD %d", DECL_FUNCTION_CODE (node));
 415           else
 416             fprintf (file, " built-in %s:%s",
 417                      built_in_class_names[(int) DECL_BUILT_IN_CLASS (node)],
 418                      built_in_names[(int) DECL_FUNCTION_CODE (node)]);
 419         }
 420
 421       if (DECL_POINTER_ALIAS_SET_KNOWN_P (node))
 422         {
 423           fprintf (file, " alias set ");
 424           fprintf (file, HOST_WIDE_INT_PRINT_DEC,
 425                    DECL_POINTER_ALIAS_SET (node));
 426         }
 427
 428       if (TREE_CODE (node) == FIELD_DECL)
 429         {
 430           print_node (file, "offset", DECL_FIELD_OFFSET (node), indent + 4);
 431           print_node (file, "bit offset", DECL_FIELD_BIT_OFFSET (node),
 432                       indent + 4);
 433         }
 434
 435       print_node_brief (file, "context", DECL_CONTEXT (node), indent + 4);
 436       print_node_brief (file, "machine_attributes",
 437                         DECL_MACHINE_ATTRIBUTES (node), indent + 4);
 438       print_node_brief (file, "abstract_origin",
 439                         DECL_ABSTRACT_ORIGIN (node), indent + 4);
 440
 441       print_node (file, "arguments", DECL_ARGUMENTS (node), indent + 4);
 442       print_node (file, "result", DECL_RESULT_FLD (node), indent + 4);
 443       print_node_brief (file, "initial", DECL_INITIAL (node), indent + 4);
 444
 445       print_lang_decl (file, node, indent);
 446
 447       if (DECL_RTL_SET_P (node))
 448         {
 449           indent_to (file, indent + 4);
 450           print_rtl (file, DECL_RTL (node));
 451         }
 452
 453       if (TREE_CODE (node) == PARM_DECL)
 454         {
 455           print_node (file, "arg-type", DECL_ARG_TYPE (node), indent + 4);
 456           print_node (file, "arg-type-as-written",
 457                       DECL_ARG_TYPE_AS_WRITTEN (node), indent + 4);
 458
 459           if (DECL_INCOMING_RTL (node) != 0)
 460             {
 461               indent_to (file, indent + 4);
 462               fprintf (file, "incoming-rtl ");
 463               print_rtl (file, DECL_INCOMING_RTL (node));
 464             }
 465         }
 466       else if (TREE_CODE (node) == FUNCTION_DECL
 467                && DECL_SAVED_INSNS (node) != 0)
 468         {
 469           indent_to (file, indent + 4);
 470           fprintf (file, "saved-insns ");
 471           fprintf (file, HOST_PTR_PRINTF, (char *) DECL_SAVED_INSNS (node));
 472         }
 473
 474       /* Print the decl chain only if decl is at second level.  */
 475       if (indent == 4)
 476         print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 477       else
 478         print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 479       break;
 480
 481     case 't':
 482       /* The no-force-blk flag is used for different things in
 483          different types.  */
 484       if ((TREE_CODE (node) == RECORD_TYPE
 485            || TREE_CODE (node) == UNION_TYPE
 486            || TREE_CODE (node) == QUAL_UNION_TYPE)
 487           && TYPE_NO_FORCE_BLK (node))
 488         fputs (" no-force-blk", file);
 489       else if (TREE_CODE (node) == INTEGER_TYPE
 490                && TYPE_IS_SIZETYPE (node))
 491         fputs (" sizetype", file);
 492       else if (TREE_CODE (node) == FUNCTION_TYPE
 493                && TYPE_RETURNS_STACK_DEPRESSED (node))
 494         fputs (" returns-stack-depressed", file);
 495
 496       if (TYPE_STRING_FLAG (node))
 497         fputs (" string-flag", file);
 498       if (TYPE_NEEDS_CONSTRUCTING (node))
 499         fputs (" needs-constructing", file);
 500
 501       /* The transparent-union flag is used for different things in
 502          different nodes.  */
 503       if (TREE_CODE (node) == UNION_TYPE && TYPE_TRANSPARENT_UNION (node))
 504         fputs (" transparent-union", file);
 505       else if (TREE_CODE (node) == ARRAY_TYPE
 506                && TYPE_NONALIASED_COMPONENT (node))
 507         fputs (" nonaliased-component", file);
 508       else if (TREE_CODE (node) == FUNCTION_TYPE
 509                && TYPE_AMBIENT_BOUNDEDNESS (node))
 510         fputs (" ambient-boundedness", file);
 511
 512       if (TYPE_PACKED (node))
 513         fputs (" packed", file);
 514
 515       if (TYPE_LANG_FLAG_0 (node))
 516         fputs (" type_0", file);
 517       if (TYPE_LANG_FLAG_1 (node))
 518         fputs (" type_1", file);
 519       if (TYPE_LANG_FLAG_2 (node))
 520         fputs (" type_2", file);
 521       if (TYPE_LANG_FLAG_3 (node))
 522         fputs (" type_3", file);
 523       if (TYPE_LANG_FLAG_4 (node))
 524         fputs (" type_4", file);
 525       if (TYPE_LANG_FLAG_5 (node))
 526         fputs (" type_5", file);
 527       if (TYPE_LANG_FLAG_6 (node))
 528         fputs (" type_6", file);
 529
 530       mode = TYPE_MODE (node);
 531       fprintf (file, " %s", GET_MODE_NAME(mode));
 532
 533       print_node (file, "size", TYPE_SIZE (node), indent + 4);
 534       print_node (file, "unit size", TYPE_SIZE_UNIT (node), indent + 4);
 535       indent_to (file, indent + 3);
 536
 537       if (TYPE_USER_ALIGN (node))
 538         fprintf (file, " user");
 539
 540       fprintf (file, " align %d", TYPE_ALIGN (node));
 541       fprintf (file, " symtab %d", TYPE_SYMTAB_ADDRESS (node));
 542       fprintf (file, " alias set ");
 543       fprintf (file, HOST_WIDE_INT_PRINT_DEC, TYPE_ALIAS_SET (node));
 544
 545       print_node (file, "attributes", TYPE_ATTRIBUTES (node), indent + 4);
 546
 547       if (INTEGRAL_TYPE_P (node) || TREE_CODE (node) == REAL_TYPE)
 548         {
 549           fprintf (file, " precision %d", TYPE_PRECISION (node));
 550           print_node_brief (file, "min", TYPE_MIN_VALUE (node), indent + 4);
 551           print_node_brief (file, "max", TYPE_MAX_VALUE (node), indent + 4);
 552         }
 553
 554       if (TREE_CODE (node) == ENUMERAL_TYPE)
 555         print_node (file, "values", TYPE_VALUES (node), indent + 4);
 556       else if (TREE_CODE (node) == ARRAY_TYPE || TREE_CODE (node) == SET_TYPE)
 557         print_node (file, "domain", TYPE_DOMAIN (node), indent + 4);
 558       else if (TREE_CODE (node) == RECORD_TYPE
 559                || TREE_CODE (node) == UNION_TYPE
 560                || TREE_CODE (node) == QUAL_UNION_TYPE)
 561         print_node (file, "fields", TYPE_FIELDS (node), indent + 4);
 562       else if (TREE_CODE (node) == FUNCTION_TYPE
 563                || TREE_CODE (node) == METHOD_TYPE)
 564         {
 565           if (TYPE_METHOD_BASETYPE (node))
 566             print_node_brief (file, "method basetype",
 567                               TYPE_METHOD_BASETYPE (node), indent + 4);
 568           print_node (file, "arg-types", TYPE_ARG_TYPES (node), indent + 4);
 569         }
 570       else if (TREE_CODE (node) == OFFSET_TYPE)
 571         print_node_brief (file, "basetype", TYPE_OFFSET_BASETYPE (node),
 572                           indent + 4);
 573
 574       if (TYPE_CONTEXT (node))
 575         print_node_brief (file, "context", TYPE_CONTEXT (node), indent + 4);
 576
 577       print_lang_type (file, node, indent);
 578
 579       if (TYPE_POINTER_TO (node) || TREE_CHAIN (node))
 580         indent_to (file, indent + 3);
 581
 582       print_node_brief (file, "pointer_to_this", TYPE_POINTER_TO (node),
 583                         indent + 4);
 584       print_node_brief (file, "reference_to_this", TYPE_REFERENCE_TO (node),
 585                         indent + 4);
 586       print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 587       break;
 588
 589     case 'b':
 590       print_node (file, "vars", BLOCK_VARS (node), indent + 4);
 591       print_node (file, "supercontext", BLOCK_SUPERCONTEXT (node), indent + 4);
 592       print_node (file, "subblocks", BLOCK_SUBBLOCKS (node), indent + 4);
 593       print_node (file, "chain", BLOCK_CHAIN (node), indent + 4);
 594       print_node (file, "abstract_origin",
 595                   BLOCK_ABSTRACT_ORIGIN (node), indent + 4);
 596       break;
 597
 598     case 'e':
 599     case '<':
 600     case '1':
 601     case '2':
 602     case 'r':
 603     case 's':
 604       if (TREE_CODE (node) == BIND_EXPR)
 605         {
 606           print_node (file, "vars", TREE_OPERAND (node, 0), indent + 4);
 607           print_node (file, "body", TREE_OPERAND (node, 1), indent + 4);
 608           print_node (file, "block", TREE_OPERAND (node, 2), indent + 4);
 609           break;
 610         }
 611
 612       len = TREE_CODE_LENGTH (TREE_CODE (node));
 613
 614       /* Some nodes contain rtx's, not trees,
 615          after a certain point.  Print the rtx's as rtx's.  */
 616       first_rtl = first_rtl_op (TREE_CODE (node));
 617
 618       for (i = 0; i < len; i++)
 619         {
 620           if (i >= first_rtl)
 621             {
 622               indent_to (file, indent + 4);
 623               fprintf (file, "rtl %d ", i);
 624               if (TREE_OPERAND (node, i))
 625                 print_rtl (file, (struct rtx_def *) TREE_OPERAND (node, i));
 626               else
 627                 fprintf (file, "(nil)");
 628               fprintf (file, "\n");
 629             }
 630           else
 631             {
 632               char temp[10];
 633
 634               sprintf (temp, "arg %d", i);
 635               print_node (file, temp, TREE_OPERAND (node, i), indent + 4);
 636             }
 637         }
 638
 639       if (TREE_CODE (node) == EXPR_WITH_FILE_LOCATION)
 640         {
 641           indent_to (file, indent+4);
 642           fprintf (file, "%s:%d:%d",
 643                    (EXPR_WFL_FILENAME_NODE (node ) ?
 644                     EXPR_WFL_FILENAME (node) : "(no file info)"),
 645                    EXPR_WFL_LINENO (node), EXPR_WFL_COLNO (node));
 646         }
 647       print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 648       break;
 649
 650     case 'c':
 651     case 'x':
 652       switch (TREE_CODE (node))
 653         {
 654         case INTEGER_CST:
 655           if (TREE_CONSTANT_OVERFLOW (node))
 656             fprintf (file, " overflow");
 657
 658           fprintf (file, " ");
 659           if (TREE_INT_CST_HIGH (node) == 0)
 660             fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
 661                      TREE_INT_CST_LOW (node));
 662           else if (TREE_INT_CST_HIGH (node) == -1
 663                    && TREE_INT_CST_LOW (node) != 0)
 664             {
 665               fprintf (file, "-");
 666               fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
 667                        -TREE_INT_CST_LOW (node));
 668             }
 669           else
 670             fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
 671                      TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
 672           break;
 673
 674         case REAL_CST:
 675           {
 676             REAL_VALUE_TYPE d;
 677
 678             if (TREE_OVERFLOW (node))
 679               fprintf (file, " overflow");
 680
 681 #if !defined(REAL_IS_NOT_DOUBLE) || defined(REAL_ARITHMETIC)
 682             d = TREE_REAL_CST (node);
 683             if (REAL_VALUE_ISINF (d))
 684               fprintf (file, " Inf");
 685             else if (REAL_VALUE_ISNAN (d))
 686               fprintf (file, " Nan");
 687             else
 688               {
 689                 char string[100];
 690
 691                 REAL_VALUE_TO_DECIMAL (d, "%e", string);
 692                 fprintf (file, " %s", string);
 693               }
 694 #else
 695             {
 696               int i;
 697               unsigned char *p = (unsigned char *) &TREE_REAL_CST (node);
 698               fprintf (file, " 0x");
 699               for (i = 0; i < sizeof TREE_REAL_CST (node); i++)
 700                 fprintf (file, "%02x", *p++);
 701               fprintf (file, "");
 702             }
 703 #endif
 704           }
 705           break;
 706
 707         case COMPLEX_CST:
 708           print_node (file, "real", TREE_REALPART (node), indent + 4);
 709           print_node (file, "imag", TREE_IMAGPART (node), indent + 4);
 710           break;
 711
 712         case STRING_CST:
 713           fprintf (file, " \"%s\"", TREE_STRING_POINTER (node));
 714           /* Print the chain at second level.  */
 715           if (indent == 4)
 716             print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 717           else
 718             print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 719           break;
 720
 721         case IDENTIFIER_NODE:
 722           print_lang_identifier (file, node, indent);
 723           break;
 724
 725         case TREE_LIST:
 726           print_node (file, "purpose", TREE_PURPOSE (node), indent + 4);
 727           print_node (file, "value", TREE_VALUE (node), indent + 4);
 728           print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 729           break;
 730
 731         case TREE_VEC:
 732           len = TREE_VEC_LENGTH (node);
 733           for (i = 0; i < len; i++)
 734             if (TREE_VEC_ELT (node, i))
 735               {
 736                 char temp[10];
 737                 sprintf (temp, "elt %d", i);
 738                 indent_to (file, indent + 4);
 739                 print_node_brief (file, temp, TREE_VEC_ELT (node, i), 0);
 740               }
 741           break;
 742
 743         case OP_IDENTIFIER:
 744           print_node (file, "op1", TREE_PURPOSE (node), indent + 4);
 745           print_node (file, "op2", TREE_VALUE (node), indent + 4);
 746           break;
 747
 748         default:
 749           if (TREE_CODE_CLASS (TREE_CODE (node)) == 'x')
 750             lang_print_xnode (file, node, indent);
 751           break;
 752         }
 753
 754       break;
 755     }
 756
 757   fprintf (file, ">");
 758 }