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    2001, 2002 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22
  23 #include "config.h"
  24 #include "system.h"
  25 #include "tree.h"
  26 #include "real.h"
  27 #include "ggc.h"
  28 #include "langhooks.h"
  29
  30 /* Define the hash table of nodes already seen.
  31    Such nodes are not repeated; brief cross-references are used.  */
  32
  33 #define HASH_SIZE 37
  34
  35 struct bucket
  36 {
  37   tree node;
  38   struct bucket *next;
  39 };
  40
  41 static struct bucket **table;
  42
  43 /* Print the node NODE on standard error, for debugging.
  44    Most nodes referred to by this one are printed recursively
  45    down to a depth of six.  */
  46
  47 void
  48 debug_tree (node)
  49      tree node;
  50 {
  51   table = (struct bucket **) xcalloc (HASH_SIZE, sizeof (struct bucket *));
  52   print_node (stderr, "", node, 0);
  53   table = 0;
  54   fprintf (stderr, "\n");
  55 }
  56
  57 /* Print a node in brief fashion, with just the code, address and name.  */
  58
  59 void
  60 print_node_brief (file, prefix, node, indent)
  61      FILE *file;
  62      const char *prefix;
  63      tree node;
  64      int indent;
  65 {
  66   char class;
  67
  68   if (node == 0)
  69     return;
  70
  71   class = TREE_CODE_CLASS (TREE_CODE (node));
  72
  73   /* Always print the slot this node is in, and its code, address and
  74      name if any.  */
  75   if (indent > 0)
  76     fprintf (file, " ");
  77   fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
  78   fprintf (file, HOST_PTR_PRINTF, (char *) node);
  79
  80   if (class == 'd')
  81     {
  82       if (DECL_NAME (node))
  83         fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
  84     }
  85   else if (class == 't')
  86     {
  87       if (TYPE_NAME (node))
  88         {
  89           if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
  90             fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
  91           else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
  92                    && DECL_NAME (TYPE_NAME (node)))
  93             fprintf (file, " %s",
  94                      IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
  95         }
  96     }
  97   if (TREE_CODE (node) == IDENTIFIER_NODE)
  98     fprintf (file, " %s", IDENTIFIER_POINTER (node));
  99
 100   /* We might as well always print the value of an integer or real.  */
 101   if (TREE_CODE (node) == INTEGER_CST)
 102     {
 103       if (TREE_CONSTANT_OVERFLOW (node))
 104         fprintf (file, " overflow");
 105
 106       fprintf (file, " ");
 107       if (TREE_INT_CST_HIGH (node) == 0)
 108         fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED, TREE_INT_CST_LOW (node));
 109       else if (TREE_INT_CST_HIGH (node) == -1
 110                && TREE_INT_CST_LOW (node) != 0)
 111         {
 112           fprintf (file, "-");
 113           fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
 114                    -TREE_INT_CST_LOW (node));
 115         }
 116       else
 117         fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
 118                  TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
 119     }
 120   if (TREE_CODE (node) == REAL_CST)
 121     {
 122       REAL_VALUE_TYPE d;
 123
 124       if (TREE_OVERFLOW (node))
 125         fprintf (file, " overflow");
 126
 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[60];
 135           real_to_decimal (string, &d, sizeof (string), 0, 1);
 136           fprintf (file, " %s", string);
 137         }
 138     }
 139
 140   fprintf (file, ">");
 141 }
 142
 143 void
 144 indent_to (file, column)
 145      FILE *file;
 146      int column;
 147 {
 148   int i;
 149
 150   /* Since this is the long way, indent to desired column.  */
 151   if (column > 0)
 152     fprintf (file, "\n");
 153   for (i = 0; i < column; i++)
 154     fprintf (file, " ");
 155 }
 156 \f
 157 /* Print the node NODE in full on file FILE, preceded by PREFIX,
 158    starting in column INDENT.  */
 159
 160 void
 161 print_node (file, prefix, node, indent)
 162      FILE *file;
 163      const char *prefix;
 164      tree node;
 165      int indent;
 166 {
 167   int hash;
 168   struct bucket *b;
 169   enum machine_mode mode;
 170   char class;
 171   int len;
 172   int first_rtl;
 173   int i;
 174
 175   if (node == 0)
 176     return;
 177
 178   class = TREE_CODE_CLASS (TREE_CODE (node));
 179
 180   /* Don't get too deep in nesting.  If the user wants to see deeper,
 181      it is easy to use the address of a lowest-level node
 182      as an argument in another call to debug_tree.  */
 183
 184   if (indent > 24)
 185     {
 186       print_node_brief (file, prefix, node, indent);
 187       return;
 188     }
 189
 190   if (indent > 8 && (class == 't' || class == 'd'))
 191     {
 192       print_node_brief (file, prefix, node, indent);
 193       return;
 194     }
 195
 196   /* It is unsafe to look at any other filds of an ERROR_MARK node.  */
 197   if (TREE_CODE (node) == ERROR_MARK)
 198     {
 199       print_node_brief (file, prefix, node, indent);
 200       return;
 201     }
 202
 203   hash = ((unsigned long) node) % HASH_SIZE;
 204
 205   /* If node is in the table, just mention its address.  */
 206   for (b = table[hash]; b; b = b->next)
 207     if (b->node == node)
 208       {
 209         print_node_brief (file, prefix, node, indent);
 210         return;
 211       }
 212
 213   /* Add this node to the table.  */
 214   b = (struct bucket *) xmalloc (sizeof (struct bucket));
 215   b->node = node;
 216   b->next = table[hash];
 217   table[hash] = b;
 218
 219   /* Indent to the specified column, since this is the long form.  */
 220   indent_to (file, indent);
 221
 222   /* Print the slot this node is in, and its code, and address.  */
 223   fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
 224   fprintf (file, HOST_PTR_PRINTF, (char *) node);
 225
 226   /* Print the name, if any.  */
 227   if (class == 'd')
 228     {
 229       if (DECL_NAME (node))
 230         fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
 231     }
 232   else if (class == 't')
 233     {
 234       if (TYPE_NAME (node))
 235         {
 236           if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
 237             fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
 238           else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
 239                    && DECL_NAME (TYPE_NAME (node)))
 240             fprintf (file, " %s",
 241                      IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
 242         }
 243     }
 244   if (TREE_CODE (node) == IDENTIFIER_NODE)
 245     fprintf (file, " %s", IDENTIFIER_POINTER (node));
 246
 247   if (TREE_CODE (node) == INTEGER_CST)
 248     {
 249       if (indent <= 4)
 250         print_node_brief (file, "type", TREE_TYPE (node), indent + 4);
 251     }
 252   else
 253     {
 254       print_node (file, "type", TREE_TYPE (node), indent + 4);
 255       if (TREE_TYPE (node))
 256         indent_to (file, indent + 3);
 257     }
 258
 259   if (TREE_SIDE_EFFECTS (node))
 260     fputs (" side-effects", file);
 261   if (TREE_READONLY (node))
 262     fputs (" readonly", file);
 263   if (TREE_CONSTANT (node))
 264     fputs (" constant", file);
 265   if (TREE_ADDRESSABLE (node))
 266     fputs (" addressable", file);
 267   if (TREE_THIS_VOLATILE (node))
 268     fputs (" volatile", file);
 269   if (TREE_UNSIGNED (node))
 270     fputs (" unsigned", file);
 271   if (TREE_ASM_WRITTEN (node))
 272     fputs (" asm_written", file);
 273   if (TREE_USED (node))
 274     fputs (" used", file);
 275   if (TREE_NOTHROW (node))
 276     fputs (" nothrow", file);
 277   if (TREE_PUBLIC (node))
 278     fputs (" public", file);
 279   if (TREE_PRIVATE (node))
 280     fputs (" private", file);
 281   if (TREE_PROTECTED (node))
 282     fputs (" protected", file);
 283   if (TREE_STATIC (node))
 284     fputs (" static", file);
 285   if (TREE_DEPRECATED (node))
 286     fputs (" deprecated", file);
 287   if (TREE_LANG_FLAG_0 (node))
 288     fputs (" tree_0", file);
 289   if (TREE_LANG_FLAG_1 (node))
 290     fputs (" tree_1", file);
 291   if (TREE_LANG_FLAG_2 (node))
 292     fputs (" tree_2", file);
 293   if (TREE_LANG_FLAG_3 (node))
 294     fputs (" tree_3", file);
 295   if (TREE_LANG_FLAG_4 (node))
 296     fputs (" tree_4", file);
 297   if (TREE_LANG_FLAG_5 (node))
 298     fputs (" tree_5", file);
 299   if (TREE_LANG_FLAG_6 (node))
 300     fputs (" tree_6", file);
 301
 302   /* DECL_ nodes have additional attributes.  */
 303
 304   switch (TREE_CODE_CLASS (TREE_CODE (node)))
 305     {
 306     case 'd':
 307       mode = DECL_MODE (node);
 308
 309       if (DECL_IGNORED_P (node))
 310         fputs (" ignored", file);
 311       if (DECL_ABSTRACT (node))
 312         fputs (" abstract", file);
 313       if (DECL_IN_SYSTEM_HEADER (node))
 314         fputs (" in_system_header", file);
 315       if (DECL_COMMON (node))
 316         fputs (" common", file);
 317       if (DECL_EXTERNAL (node))
 318         fputs (" external", file);
 319       if (DECL_WEAK (node))
 320         fputs (" weak", file);
 321       if (DECL_REGISTER (node) && TREE_CODE (node) != FIELD_DECL
 322           && TREE_CODE (node) != FUNCTION_DECL
 323           && TREE_CODE (node) != LABEL_DECL)
 324         fputs (" regdecl", file);
 325       if (DECL_NONLOCAL (node))
 326         fputs (" nonlocal", file);
 327
 328       if (TREE_CODE (node) == TYPE_DECL && TYPE_DECL_SUPPRESS_DEBUG (node))
 329         fputs (" suppress-debug", file);
 330
 331       if (TREE_CODE (node) == FUNCTION_DECL && DID_INLINE_FUNC (node))
 332         fputs (" autoinline", file);
 333       else if (TREE_CODE (node) == FUNCTION_DECL && DECL_INLINE (node))
 334         fputs (" inline", file);
 335       if (TREE_CODE (node) == FUNCTION_DECL && DECL_BUILT_IN (node))
 336         fputs (" built-in", file);
 337       if (TREE_CODE (node) == FUNCTION_DECL && DECL_BUILT_IN_NONANSI (node))
 338         fputs (" built-in-nonansi", file);
 339       if (TREE_CODE (node) == FUNCTION_DECL && DECL_NO_STATIC_CHAIN (node))
 340         fputs (" no-static-chain", file);
 341
 342       if (TREE_CODE (node) == FIELD_DECL && DECL_PACKED (node))
 343         fputs (" packed", file);
 344       if (TREE_CODE (node) == FIELD_DECL && DECL_BIT_FIELD (node))
 345         fputs (" bit-field", file);
 346       if (TREE_CODE (node) == FIELD_DECL && DECL_NONADDRESSABLE_P (node))
 347         fputs (" nonaddressable", file);
 348
 349       if (TREE_CODE (node) == LABEL_DECL && DECL_TOO_LATE (node))
 350         fputs (" too-late", file);
 351       if (TREE_CODE (node) == LABEL_DECL && DECL_ERROR_ISSUED (node))
 352         fputs (" error-issued", file);
 353
 354       if (TREE_CODE (node) == VAR_DECL && DECL_IN_TEXT_SECTION (node))
 355         fputs (" in-text-section", file);
 356       if (TREE_CODE (node) == VAR_DECL && DECL_THREAD_LOCAL (node))
 357         fputs (" thread-local", file);
 358
 359       if (TREE_CODE (node) == PARM_DECL && DECL_TRANSPARENT_UNION (node))
 360         fputs (" transparent-union", file);
 361
 362       if (DECL_VIRTUAL_P (node))
 363         fputs (" virtual", file);
 364       if (DECL_DEFER_OUTPUT (node))
 365         fputs (" defer-output", file);
 366
 367       if (DECL_LANG_FLAG_0 (node))
 368         fputs (" decl_0", file);
 369       if (DECL_LANG_FLAG_1 (node))
 370         fputs (" decl_1", file);
 371       if (DECL_LANG_FLAG_2 (node))
 372         fputs (" decl_2", file);
 373       if (DECL_LANG_FLAG_3 (node))
 374         fputs (" decl_3", file);
 375       if (DECL_LANG_FLAG_4 (node))
 376         fputs (" decl_4", file);
 377       if (DECL_LANG_FLAG_5 (node))
 378         fputs (" decl_5", file);
 379       if (DECL_LANG_FLAG_6 (node))
 380         fputs (" decl_6", file);
 381       if (DECL_LANG_FLAG_7 (node))
 382         fputs (" decl_7", file);
 383
 384       fprintf (file, " %s", GET_MODE_NAME (mode));
 385       fprintf (file, " file %s line %d",
 386                DECL_SOURCE_FILE (node), DECL_SOURCE_LINE (node));
 387
 388       print_node (file, "size", DECL_SIZE (node), indent + 4);
 389       print_node (file, "unit size", DECL_SIZE_UNIT (node), indent + 4);
 390
 391       if (TREE_CODE (node) != FUNCTION_DECL
 392           || DECL_INLINE (node) || DECL_BUILT_IN (node))
 393         indent_to (file, indent + 3);
 394
 395       if (TREE_CODE (node) != FUNCTION_DECL)
 396         {
 397           if (DECL_USER_ALIGN (node))
 398             fprintf (file, " user");
 399
 400           fprintf (file, " align %d", DECL_ALIGN (node));
 401           if (TREE_CODE (node) == FIELD_DECL)
 402             {
 403               fprintf (file, " offset_align ");
 404               fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
 405                        DECL_OFFSET_ALIGN (node));
 406             }
 407         }
 408       else if (DECL_BUILT_IN (node))
 409         {
 410           if (DECL_BUILT_IN_CLASS (node) == BUILT_IN_MD)
 411             fprintf (file, " built-in BUILT_IN_MD %d", DECL_FUNCTION_CODE (node));
 412           else
 413             fprintf (file, " built-in %s:%s",
 414                      built_in_class_names[(int) DECL_BUILT_IN_CLASS (node)],
 415                      built_in_names[(int) DECL_FUNCTION_CODE (node)]);
 416         }
 417
 418       if (DECL_POINTER_ALIAS_SET_KNOWN_P (node))
 419         {
 420           fprintf (file, " alias set ");
 421           fprintf (file, HOST_WIDE_INT_PRINT_DEC,
 422                    DECL_POINTER_ALIAS_SET (node));
 423         }
 424
 425       if (TREE_CODE (node) == FIELD_DECL)
 426         {
 427           print_node (file, "offset", DECL_FIELD_OFFSET (node), indent + 4);
 428           print_node (file, "bit offset", DECL_FIELD_BIT_OFFSET (node),
 429                       indent + 4);
 430         }
 431
 432       print_node_brief (file, "context", DECL_CONTEXT (node), indent + 4);
 433       print_node_brief (file, "attributes",
 434                         DECL_ATTRIBUTES (node), indent + 4);
 435       print_node_brief (file, "abstract_origin",
 436                         DECL_ABSTRACT_ORIGIN (node), indent + 4);
 437
 438       print_node (file, "arguments", DECL_ARGUMENTS (node), indent + 4);
 439       print_node (file, "result", DECL_RESULT_FLD (node), indent + 4);
 440       print_node_brief (file, "initial", DECL_INITIAL (node), indent + 4);
 441
 442       (*lang_hooks.print_decl) (file, node, indent);
 443
 444       if (DECL_RTL_SET_P (node))
 445         {
 446           indent_to (file, indent + 4);
 447           print_rtl (file, DECL_RTL (node));
 448         }
 449
 450       if (TREE_CODE (node) == PARM_DECL)
 451         {
 452           print_node (file, "arg-type", DECL_ARG_TYPE (node), indent + 4);
 453           print_node (file, "arg-type-as-written",
 454                       DECL_ARG_TYPE_AS_WRITTEN (node), indent + 4);
 455
 456           if (DECL_INCOMING_RTL (node) != 0)
 457             {
 458               indent_to (file, indent + 4);
 459               fprintf (file, "incoming-rtl ");
 460               print_rtl (file, DECL_INCOMING_RTL (node));
 461             }
 462         }
 463       else if (TREE_CODE (node) == FUNCTION_DECL
 464                && DECL_SAVED_INSNS (node) != 0)
 465         {
 466           indent_to (file, indent + 4);
 467           fprintf (file, "saved-insns ");
 468           fprintf (file, HOST_PTR_PRINTF, (char *) DECL_SAVED_INSNS (node));
 469         }
 470
 471       /* Print the decl chain only if decl is at second level.  */
 472       if (indent == 4)
 473         print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 474       else
 475         print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 476       break;
 477
 478     case 't':
 479       /* The no-force-blk flag is used for different things in
 480          different types.  */
 481       if ((TREE_CODE (node) == RECORD_TYPE
 482            || TREE_CODE (node) == UNION_TYPE
 483            || TREE_CODE (node) == QUAL_UNION_TYPE)
 484           && TYPE_NO_FORCE_BLK (node))
 485         fputs (" no-force-blk", file);
 486       else if (TREE_CODE (node) == INTEGER_TYPE
 487                && TYPE_IS_SIZETYPE (node))
 488         fputs (" sizetype", file);
 489       else if (TREE_CODE (node) == FUNCTION_TYPE
 490                && TYPE_RETURNS_STACK_DEPRESSED (node))
 491         fputs (" returns-stack-depressed", file);
 492
 493       if (TYPE_STRING_FLAG (node))
 494         fputs (" string-flag", file);
 495       if (TYPE_NEEDS_CONSTRUCTING (node))
 496         fputs (" needs-constructing", file);
 497
 498       /* The transparent-union flag is used for different things in
 499          different nodes.  */
 500       if (TREE_CODE (node) == UNION_TYPE && TYPE_TRANSPARENT_UNION (node))
 501         fputs (" transparent-union", file);
 502       else if (TREE_CODE (node) == ARRAY_TYPE
 503                && TYPE_NONALIASED_COMPONENT (node))
 504         fputs (" nonaliased-component", file);
 505       else if (TREE_CODE (node) == FUNCTION_TYPE
 506                && TYPE_AMBIENT_BOUNDEDNESS (node))
 507         fputs (" ambient-boundedness", file);
 508
 509       if (TYPE_PACKED (node))
 510         fputs (" packed", file);
 511
 512       if (TYPE_RESTRICT (node))
 513         fputs (" restrict", 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       (*lang_hooks.print_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             d = TREE_REAL_CST (node);
 682             if (REAL_VALUE_ISINF (d))
 683               fprintf (file, " Inf");
 684             else if (REAL_VALUE_ISNAN (d))
 685               fprintf (file, " Nan");
 686             else
 687               {
 688                 char string[64];
 689                 real_to_decimal (string, &d, sizeof (string), 0, 1);
 690                 fprintf (file, " %s", string);
 691               }
 692           }
 693           break;
 694
 695         case VECTOR_CST:
 696           {
 697             tree vals = TREE_VECTOR_CST_ELTS (node);
 698             char buf[10];
 699             tree link;
 700             int i;
 701
 702             i = 0;
 703             for (link = vals; link; link = TREE_CHAIN (link), ++i)
 704               {
 705                 sprintf (buf, "elt%d: ", i);
 706                 print_node (file, buf, TREE_VALUE (link), indent + 4);
 707               }
 708           }
 709           break;
 710
 711         case COMPLEX_CST:
 712           print_node (file, "real", TREE_REALPART (node), indent + 4);
 713           print_node (file, "imag", TREE_IMAGPART (node), indent + 4);
 714           break;
 715
 716         case STRING_CST:
 717           {
 718             const char *p = TREE_STRING_POINTER (node);
 719             int i = TREE_STRING_LENGTH (node);
 720             fputs (" \"", file);
 721             while (--i >= 0)
 722               {
 723                 char ch = *p++;
 724                 if (ch >= ' ' && ch < 127)
 725                   putc (ch, file);
 726                 else
 727                   fprintf(file, "\\%03o", ch & 0xFF);
 728               }
 729             fputc ('\"', file);
 730           }
 731           /* Print the chain at second level.  */
 732           if (indent == 4)
 733             print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 734           else
 735             print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 736           break;
 737
 738         case IDENTIFIER_NODE:
 739           (*lang_hooks.print_identifier) (file, node, indent);
 740           break;
 741
 742         case TREE_LIST:
 743           print_node (file, "purpose", TREE_PURPOSE (node), indent + 4);
 744           print_node (file, "value", TREE_VALUE (node), indent + 4);
 745           print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 746           break;
 747
 748         case TREE_VEC:
 749           len = TREE_VEC_LENGTH (node);
 750           for (i = 0; i < len; i++)
 751             if (TREE_VEC_ELT (node, i))
 752               {
 753                 char temp[10];
 754                 sprintf (temp, "elt %d", i);
 755                 indent_to (file, indent + 4);
 756                 print_node_brief (file, temp, TREE_VEC_ELT (node, i), 0);
 757               }
 758           break;
 759
 760         default:
 761           if (TREE_CODE_CLASS (TREE_CODE (node)) == 'x')
 762             (*lang_hooks.print_xnode) (file, node, indent);
 763           break;
 764         }
 765
 766       break;
 767     }
 768
 769   fprintf (file, ">");
 770 }