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 "ggc.h"
  27 #include "langhooks.h"
  28
  29 /* Define the hash table of nodes already seen.
  30    Such nodes are not repeated; brief cross-references are used.  */
  31
  32 #define HASH_SIZE 37
  33
  34 struct bucket
  35 {
  36   tree node;
  37   struct bucket *next;
  38 };
  39
  40 static struct bucket **table;
  41
  42 /* Print the node NODE on standard error, for debugging.
  43    Most nodes referred to by this one are printed recursively
  44    down to a depth of six.  */
  45
  46 void
  47 debug_tree (node)
  48      tree node;
  49 {
  50   table = (struct bucket **) permalloc (HASH_SIZE * sizeof (struct bucket *));
  51   memset ((char *) table, 0, 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 #if !defined(REAL_IS_NOT_DOUBLE) || defined(REAL_ARITHMETIC)
 128       d = TREE_REAL_CST (node);
 129       if (REAL_VALUE_ISINF (d))
 130         fprintf (file, " Inf");
 131       else if (REAL_VALUE_ISNAN (d))
 132         fprintf (file, " Nan");
 133       else
 134         {
 135           char string[100];
 136
 137           REAL_VALUE_TO_DECIMAL (d, "%e", string);
 138           fprintf (file, " %s", string);
 139         }
 140 #else
 141       {
 142         int i;
 143         unsigned char *p = (unsigned char *) &TREE_REAL_CST (node);
 144         fprintf (file, " 0x");
 145         for (i = 0; i < sizeof TREE_REAL_CST (node); i++)
 146           fprintf (file, "%02x", *p++);
 147         fprintf (file, "");
 148       }
 149 #endif
 150     }
 151
 152   fprintf (file, ">");
 153 }
 154
 155 void
 156 indent_to (file, column)
 157      FILE *file;
 158      int column;
 159 {
 160   int i;
 161
 162   /* Since this is the long way, indent to desired column.  */
 163   if (column > 0)
 164     fprintf (file, "\n");
 165   for (i = 0; i < column; i++)
 166     fprintf (file, " ");
 167 }
 168 \f
 169 /* Print the node NODE in full on file FILE, preceded by PREFIX,
 170    starting in column INDENT.  */
 171
 172 void
 173 print_node (file, prefix, node, indent)
 174      FILE *file;
 175      const char *prefix;
 176      tree node;
 177      int indent;
 178 {
 179   int hash;
 180   struct bucket *b;
 181   enum machine_mode mode;
 182   char class;
 183   int len;
 184   int first_rtl;
 185   int i;
 186
 187   if (node == 0)
 188     return;
 189
 190   class = TREE_CODE_CLASS (TREE_CODE (node));
 191
 192   /* Don't get too deep in nesting.  If the user wants to see deeper,
 193      it is easy to use the address of a lowest-level node
 194      as an argument in another call to debug_tree.  */
 195
 196   if (indent > 24)
 197     {
 198       print_node_brief (file, prefix, node, indent);
 199       return;
 200     }
 201
 202   if (indent > 8 && (class == 't' || class == 'd'))
 203     {
 204       print_node_brief (file, prefix, node, indent);
 205       return;
 206     }
 207
 208   /* It is unsafe to look at any other filds of an ERROR_MARK node.  */
 209   if (TREE_CODE (node) == ERROR_MARK)
 210     {
 211       print_node_brief (file, prefix, node, indent);
 212       return;
 213     }
 214
 215   hash = ((unsigned long) node) % HASH_SIZE;
 216
 217   /* If node is in the table, just mention its address.  */
 218   for (b = table[hash]; b; b = b->next)
 219     if (b->node == node)
 220       {
 221         print_node_brief (file, prefix, node, indent);
 222         return;
 223       }
 224
 225   /* Add this node to the table.  */
 226   b = (struct bucket *) permalloc (sizeof (struct bucket));
 227   b->node = node;
 228   b->next = table[hash];
 229   table[hash] = b;
 230
 231   /* Indent to the specified column, since this is the long form.  */
 232   indent_to (file, indent);
 233
 234   /* Print the slot this node is in, and its code, and address.  */
 235   fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
 236   fprintf (file, HOST_PTR_PRINTF, (char *) node);
 237
 238   /* Print the name, if any.  */
 239   if (class == 'd')
 240     {
 241       if (DECL_NAME (node))
 242         fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
 243     }
 244   else if (class == 't')
 245     {
 246       if (TYPE_NAME (node))
 247         {
 248           if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
 249             fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
 250           else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
 251                    && DECL_NAME (TYPE_NAME (node)))
 252             fprintf (file, " %s",
 253                      IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
 254         }
 255     }
 256   if (TREE_CODE (node) == IDENTIFIER_NODE)
 257     fprintf (file, " %s", IDENTIFIER_POINTER (node));
 258
 259   if (TREE_CODE (node) == INTEGER_CST)
 260     {
 261       if (indent <= 4)
 262         print_node_brief (file, "type", TREE_TYPE (node), indent + 4);
 263     }
 264   else
 265     {
 266       print_node (file, "type", TREE_TYPE (node), indent + 4);
 267       if (TREE_TYPE (node))
 268         indent_to (file, indent + 3);
 269     }
 270
 271   if (TREE_SIDE_EFFECTS (node))
 272     fputs (" side-effects", file);
 273   if (TREE_READONLY (node))
 274     fputs (" readonly", file);
 275   if (TREE_CONSTANT (node))
 276     fputs (" constant", file);
 277   if (TREE_ADDRESSABLE (node))
 278     fputs (" addressable", file);
 279   if (TREE_THIS_VOLATILE (node))
 280     fputs (" volatile", file);
 281   if (TREE_UNSIGNED (node))
 282     fputs (" unsigned", file);
 283   if (TREE_ASM_WRITTEN (node))
 284     fputs (" asm_written", file);
 285   if (TREE_USED (node))
 286     fputs (" used", file);
 287   if (TREE_NOTHROW (node))
 288     fputs (" nothrow", file);
 289   if (TREE_PUBLIC (node))
 290     fputs (" public", file);
 291   if (TREE_PRIVATE (node))
 292     fputs (" private", file);
 293   if (TREE_PROTECTED (node))
 294     fputs (" protected", file);
 295   if (TREE_STATIC (node))
 296     fputs (" static", file);
 297   if (TREE_DEPRECATED (node))
 298     fputs (" deprecated", file);
 299   if (TREE_LANG_FLAG_0 (node))
 300     fputs (" tree_0", file);
 301   if (TREE_LANG_FLAG_1 (node))
 302     fputs (" tree_1", file);
 303   if (TREE_LANG_FLAG_2 (node))
 304     fputs (" tree_2", file);
 305   if (TREE_LANG_FLAG_3 (node))
 306     fputs (" tree_3", file);
 307   if (TREE_LANG_FLAG_4 (node))
 308     fputs (" tree_4", file);
 309   if (TREE_LANG_FLAG_5 (node))
 310     fputs (" tree_5", file);
 311   if (TREE_LANG_FLAG_6 (node))
 312     fputs (" tree_6", file);
 313
 314   /* DECL_ nodes have additional attributes.  */
 315
 316   switch (TREE_CODE_CLASS (TREE_CODE (node)))
 317     {
 318     case 'd':
 319       mode = DECL_MODE (node);
 320
 321       if (DECL_IGNORED_P (node))
 322         fputs (" ignored", file);
 323       if (DECL_ABSTRACT (node))
 324         fputs (" abstract", file);
 325       if (DECL_IN_SYSTEM_HEADER (node))
 326         fputs (" in_system_header", file);
 327       if (DECL_COMMON (node))
 328         fputs (" common", file);
 329       if (DECL_EXTERNAL (node))
 330         fputs (" external", file);
 331       if (DECL_REGISTER (node) && TREE_CODE (node) != FIELD_DECL
 332           && TREE_CODE (node) != FUNCTION_DECL
 333           && TREE_CODE (node) != LABEL_DECL)
 334         fputs (" regdecl", file);
 335       if (DECL_NONLOCAL (node))
 336         fputs (" nonlocal", file);
 337
 338       if (TREE_CODE (node) == TYPE_DECL && TYPE_DECL_SUPPRESS_DEBUG (node))
 339         fputs (" suppress-debug", file);
 340
 341       if (TREE_CODE (node) == FUNCTION_DECL && DECL_INLINE (node))
 342         fputs (" inline", file);
 343       if (TREE_CODE (node) == FUNCTION_DECL && DECL_BUILT_IN (node))
 344         fputs (" built-in", file);
 345       if (TREE_CODE (node) == FUNCTION_DECL && DECL_BUILT_IN_NONANSI (node))
 346         fputs (" built-in-nonansi", file);
 347       if (TREE_CODE (node) == FUNCTION_DECL && DECL_NO_STATIC_CHAIN (node))
 348         fputs (" no-static-chain", file);
 349
 350       if (TREE_CODE (node) == FIELD_DECL && DECL_PACKED (node))
 351         fputs (" packed", file);
 352       if (TREE_CODE (node) == FIELD_DECL && DECL_BIT_FIELD (node))
 353         fputs (" bit-field", file);
 354       if (TREE_CODE (node) == FIELD_DECL && DECL_NONADDRESSABLE_P (node))
 355         fputs (" nonaddressable", file);
 356
 357       if (TREE_CODE (node) == LABEL_DECL && DECL_TOO_LATE (node))
 358         fputs (" too-late", file);
 359       if (TREE_CODE (node) == LABEL_DECL && DECL_ERROR_ISSUED (node))
 360         fputs (" error-issued", file);
 361
 362       if (TREE_CODE (node) == VAR_DECL && DECL_IN_TEXT_SECTION (node))
 363         fputs (" in-text-section", file);
 364
 365       if (TREE_CODE (node) == PARM_DECL && DECL_TRANSPARENT_UNION (node))
 366         fputs (" transparent-union", file);
 367
 368       if (DECL_VIRTUAL_P (node))
 369         fputs (" virtual", file);
 370       if (DECL_DEFER_OUTPUT (node))
 371         fputs (" defer-output", file);
 372
 373       if (DECL_LANG_FLAG_0 (node))
 374         fputs (" decl_0", file);
 375       if (DECL_LANG_FLAG_1 (node))
 376         fputs (" decl_1", file);
 377       if (DECL_LANG_FLAG_2 (node))
 378         fputs (" decl_2", file);
 379       if (DECL_LANG_FLAG_3 (node))
 380         fputs (" decl_3", file);
 381       if (DECL_LANG_FLAG_4 (node))
 382         fputs (" decl_4", file);
 383       if (DECL_LANG_FLAG_5 (node))
 384         fputs (" decl_5", file);
 385       if (DECL_LANG_FLAG_6 (node))
 386         fputs (" decl_6", file);
 387       if (DECL_LANG_FLAG_7 (node))
 388         fputs (" decl_7", file);
 389
 390       fprintf (file, " %s", GET_MODE_NAME (mode));
 391       fprintf (file, " file %s line %d",
 392                DECL_SOURCE_FILE (node), DECL_SOURCE_LINE (node));
 393
 394       print_node (file, "size", DECL_SIZE (node), indent + 4);
 395       print_node (file, "unit size", DECL_SIZE_UNIT (node), indent + 4);
 396
 397       if (TREE_CODE (node) != FUNCTION_DECL
 398           || DECL_INLINE (node) || DECL_BUILT_IN (node))
 399         indent_to (file, indent + 3);
 400
 401       if (TREE_CODE (node) != FUNCTION_DECL)
 402         {
 403           if (DECL_USER_ALIGN (node))
 404             fprintf (file, " user");
 405
 406           fprintf (file, " align %d", DECL_ALIGN (node));
 407           if (TREE_CODE (node) == FIELD_DECL)
 408             {
 409               fprintf (file, " offset_align ");
 410               fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
 411                        DECL_OFFSET_ALIGN (node));
 412             }
 413         }
 414       else if (DECL_BUILT_IN (node))
 415         {
 416           if (DECL_BUILT_IN_CLASS (node) == BUILT_IN_MD)
 417             fprintf (file, " built-in BUILT_IN_MD %d", DECL_FUNCTION_CODE (node));
 418           else
 419             fprintf (file, " built-in %s:%s",
 420                      built_in_class_names[(int) DECL_BUILT_IN_CLASS (node)],
 421                      built_in_names[(int) DECL_FUNCTION_CODE (node)]);
 422         }
 423
 424       if (DECL_POINTER_ALIAS_SET_KNOWN_P (node))
 425         {
 426           fprintf (file, " alias set ");
 427           fprintf (file, HOST_WIDE_INT_PRINT_DEC,
 428                    DECL_POINTER_ALIAS_SET (node));
 429         }
 430
 431       if (TREE_CODE (node) == FIELD_DECL)
 432         {
 433           print_node (file, "offset", DECL_FIELD_OFFSET (node), indent + 4);
 434           print_node (file, "bit offset", DECL_FIELD_BIT_OFFSET (node),
 435                       indent + 4);
 436         }
 437
 438       print_node_brief (file, "context", DECL_CONTEXT (node), indent + 4);
 439       print_node_brief (file, "attributes",
 440                         DECL_ATTRIBUTES (node), indent + 4);
 441       print_node_brief (file, "abstract_origin",
 442                         DECL_ABSTRACT_ORIGIN (node), indent + 4);
 443
 444       print_node (file, "arguments", DECL_ARGUMENTS (node), indent + 4);
 445       print_node (file, "result", DECL_RESULT_FLD (node), indent + 4);
 446       print_node_brief (file, "initial", DECL_INITIAL (node), indent + 4);
 447
 448       (*lang_hooks.print_decl) (file, node, indent);
 449
 450       if (DECL_RTL_SET_P (node))
 451         {
 452           indent_to (file, indent + 4);
 453           print_rtl (file, DECL_RTL (node));
 454         }
 455
 456       if (TREE_CODE (node) == PARM_DECL)
 457         {
 458           print_node (file, "arg-type", DECL_ARG_TYPE (node), indent + 4);
 459           print_node (file, "arg-type-as-written",
 460                       DECL_ARG_TYPE_AS_WRITTEN (node), indent + 4);
 461
 462           if (DECL_INCOMING_RTL (node) != 0)
 463             {
 464               indent_to (file, indent + 4);
 465               fprintf (file, "incoming-rtl ");
 466               print_rtl (file, DECL_INCOMING_RTL (node));
 467             }
 468         }
 469       else if (TREE_CODE (node) == FUNCTION_DECL
 470                && DECL_SAVED_INSNS (node) != 0)
 471         {
 472           indent_to (file, indent + 4);
 473           fprintf (file, "saved-insns ");
 474           fprintf (file, HOST_PTR_PRINTF, (char *) DECL_SAVED_INSNS (node));
 475         }
 476
 477       /* Print the decl chain only if decl is at second level.  */
 478       if (indent == 4)
 479         print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 480       else
 481         print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 482       break;
 483
 484     case 't':
 485       /* The no-force-blk flag is used for different things in
 486          different types.  */
 487       if ((TREE_CODE (node) == RECORD_TYPE
 488            || TREE_CODE (node) == UNION_TYPE
 489            || TREE_CODE (node) == QUAL_UNION_TYPE)
 490           && TYPE_NO_FORCE_BLK (node))
 491         fputs (" no-force-blk", file);
 492       else if (TREE_CODE (node) == INTEGER_TYPE
 493                && TYPE_IS_SIZETYPE (node))
 494         fputs (" sizetype", file);
 495       else if (TREE_CODE (node) == FUNCTION_TYPE
 496                && TYPE_RETURNS_STACK_DEPRESSED (node))
 497         fputs (" returns-stack-depressed", file);
 498
 499       if (TYPE_STRING_FLAG (node))
 500         fputs (" string-flag", file);
 501       if (TYPE_NEEDS_CONSTRUCTING (node))
 502         fputs (" needs-constructing", file);
 503
 504       /* The transparent-union flag is used for different things in
 505          different nodes.  */
 506       if (TREE_CODE (node) == UNION_TYPE && TYPE_TRANSPARENT_UNION (node))
 507         fputs (" transparent-union", file);
 508       else if (TREE_CODE (node) == ARRAY_TYPE
 509                && TYPE_NONALIASED_COMPONENT (node))
 510         fputs (" nonaliased-component", file);
 511       else if (TREE_CODE (node) == FUNCTION_TYPE
 512                && TYPE_AMBIENT_BOUNDEDNESS (node))
 513         fputs (" ambient-boundedness", file);
 514
 515       if (TYPE_PACKED (node))
 516         fputs (" packed", file);
 517
 518       if (TYPE_LANG_FLAG_0 (node))
 519         fputs (" type_0", file);
 520       if (TYPE_LANG_FLAG_1 (node))
 521         fputs (" type_1", file);
 522       if (TYPE_LANG_FLAG_2 (node))
 523         fputs (" type_2", file);
 524       if (TYPE_LANG_FLAG_3 (node))
 525         fputs (" type_3", file);
 526       if (TYPE_LANG_FLAG_4 (node))
 527         fputs (" type_4", file);
 528       if (TYPE_LANG_FLAG_5 (node))
 529         fputs (" type_5", file);
 530       if (TYPE_LANG_FLAG_6 (node))
 531         fputs (" type_6", file);
 532
 533       mode = TYPE_MODE (node);
 534       fprintf (file, " %s", GET_MODE_NAME (mode));
 535
 536       print_node (file, "size", TYPE_SIZE (node), indent + 4);
 537       print_node (file, "unit size", TYPE_SIZE_UNIT (node), indent + 4);
 538       indent_to (file, indent + 3);
 539
 540       if (TYPE_USER_ALIGN (node))
 541         fprintf (file, " user");
 542
 543       fprintf (file, " align %d", TYPE_ALIGN (node));
 544       fprintf (file, " symtab %d", TYPE_SYMTAB_ADDRESS (node));
 545       fprintf (file, " alias set ");
 546       fprintf (file, HOST_WIDE_INT_PRINT_DEC, TYPE_ALIAS_SET (node));
 547
 548       print_node (file, "attributes", TYPE_ATTRIBUTES (node), indent + 4);
 549
 550       if (INTEGRAL_TYPE_P (node) || TREE_CODE (node) == REAL_TYPE)
 551         {
 552           fprintf (file, " precision %d", TYPE_PRECISION (node));
 553           print_node_brief (file, "min", TYPE_MIN_VALUE (node), indent + 4);
 554           print_node_brief (file, "max", TYPE_MAX_VALUE (node), indent + 4);
 555         }
 556
 557       if (TREE_CODE (node) == ENUMERAL_TYPE)
 558         print_node (file, "values", TYPE_VALUES (node), indent + 4);
 559       else if (TREE_CODE (node) == ARRAY_TYPE || TREE_CODE (node) == SET_TYPE)
 560         print_node (file, "domain", TYPE_DOMAIN (node), indent + 4);
 561       else if (TREE_CODE (node) == RECORD_TYPE
 562                || TREE_CODE (node) == UNION_TYPE
 563                || TREE_CODE (node) == QUAL_UNION_TYPE)
 564         print_node (file, "fields", TYPE_FIELDS (node), indent + 4);
 565       else if (TREE_CODE (node) == FUNCTION_TYPE
 566                || TREE_CODE (node) == METHOD_TYPE)
 567         {
 568           if (TYPE_METHOD_BASETYPE (node))
 569             print_node_brief (file, "method basetype",
 570                               TYPE_METHOD_BASETYPE (node), indent + 4);
 571           print_node (file, "arg-types", TYPE_ARG_TYPES (node), indent + 4);
 572         }
 573       else if (TREE_CODE (node) == OFFSET_TYPE)
 574         print_node_brief (file, "basetype", TYPE_OFFSET_BASETYPE (node),
 575                           indent + 4);
 576
 577       if (TYPE_CONTEXT (node))
 578         print_node_brief (file, "context", TYPE_CONTEXT (node), indent + 4);
 579
 580       (*lang_hooks.print_type) (file, node, indent);
 581
 582       if (TYPE_POINTER_TO (node) || TREE_CHAIN (node))
 583         indent_to (file, indent + 3);
 584
 585       print_node_brief (file, "pointer_to_this", TYPE_POINTER_TO (node),
 586                         indent + 4);
 587       print_node_brief (file, "reference_to_this", TYPE_REFERENCE_TO (node),
 588                         indent + 4);
 589       print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 590       break;
 591
 592     case 'b':
 593       print_node (file, "vars", BLOCK_VARS (node), indent + 4);
 594       print_node (file, "supercontext", BLOCK_SUPERCONTEXT (node), indent + 4);
 595       print_node (file, "subblocks", BLOCK_SUBBLOCKS (node), indent + 4);
 596       print_node (file, "chain", BLOCK_CHAIN (node), indent + 4);
 597       print_node (file, "abstract_origin",
 598                   BLOCK_ABSTRACT_ORIGIN (node), indent + 4);
 599       break;
 600
 601     case 'e':
 602     case '<':
 603     case '1':
 604     case '2':
 605     case 'r':
 606     case 's':
 607       if (TREE_CODE (node) == BIND_EXPR)
 608         {
 609           print_node (file, "vars", TREE_OPERAND (node, 0), indent + 4);
 610           print_node (file, "body", TREE_OPERAND (node, 1), indent + 4);
 611           print_node (file, "block", TREE_OPERAND (node, 2), indent + 4);
 612           break;
 613         }
 614
 615       len = TREE_CODE_LENGTH (TREE_CODE (node));
 616
 617       /* Some nodes contain rtx's, not trees,
 618          after a certain point.  Print the rtx's as rtx's.  */
 619       first_rtl = first_rtl_op (TREE_CODE (node));
 620
 621       for (i = 0; i < len; i++)
 622         {
 623           if (i >= first_rtl)
 624             {
 625               indent_to (file, indent + 4);
 626               fprintf (file, "rtl %d ", i);
 627               if (TREE_OPERAND (node, i))
 628                 print_rtl (file, (struct rtx_def *) TREE_OPERAND (node, i));
 629               else
 630                 fprintf (file, "(nil)");
 631               fprintf (file, "\n");
 632             }
 633           else
 634             {
 635               char temp[10];
 636
 637               sprintf (temp, "arg %d", i);
 638               print_node (file, temp, TREE_OPERAND (node, i), indent + 4);
 639             }
 640         }
 641
 642       if (TREE_CODE (node) == EXPR_WITH_FILE_LOCATION)
 643         {
 644           indent_to (file, indent+4);
 645           fprintf (file, "%s:%d:%d",
 646                    (EXPR_WFL_FILENAME_NODE (node ) ?
 647                     EXPR_WFL_FILENAME (node) : "(no file info)"),
 648                    EXPR_WFL_LINENO (node), EXPR_WFL_COLNO (node));
 649         }
 650       print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 651       break;
 652
 653     case 'c':
 654     case 'x':
 655       switch (TREE_CODE (node))
 656         {
 657         case INTEGER_CST:
 658           if (TREE_CONSTANT_OVERFLOW (node))
 659             fprintf (file, " overflow");
 660
 661           fprintf (file, " ");
 662           if (TREE_INT_CST_HIGH (node) == 0)
 663             fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
 664                      TREE_INT_CST_LOW (node));
 665           else if (TREE_INT_CST_HIGH (node) == -1
 666                    && TREE_INT_CST_LOW (node) != 0)
 667             {
 668               fprintf (file, "-");
 669               fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
 670                        -TREE_INT_CST_LOW (node));
 671             }
 672           else
 673             fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
 674                      TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
 675           break;
 676
 677         case REAL_CST:
 678           {
 679             REAL_VALUE_TYPE d;
 680
 681             if (TREE_OVERFLOW (node))
 682               fprintf (file, " overflow");
 683
 684 #if !defined(REAL_IS_NOT_DOUBLE) || defined(REAL_ARITHMETIC)
 685             d = TREE_REAL_CST (node);
 686             if (REAL_VALUE_ISINF (d))
 687               fprintf (file, " Inf");
 688             else if (REAL_VALUE_ISNAN (d))
 689               fprintf (file, " Nan");
 690             else
 691               {
 692                 char string[100];
 693
 694                 REAL_VALUE_TO_DECIMAL (d, "%e", string);
 695                 fprintf (file, " %s", string);
 696               }
 697 #else
 698             {
 699               int i;
 700               unsigned char *p = (unsigned char *) &TREE_REAL_CST (node);
 701               fprintf (file, " 0x");
 702               for (i = 0; i < sizeof TREE_REAL_CST (node); i++)
 703                 fprintf (file, "%02x", *p++);
 704               fprintf (file, "");
 705             }
 706 #endif
 707           }
 708           break;
 709
 710         case VECTOR_CST:
 711           {
 712             tree vals = TREE_VECTOR_CST_ELTS (node);
 713             char buf[10];
 714             tree link;
 715             int i;
 716
 717             i = 0;
 718             for (link = vals; link; link = TREE_CHAIN (link), ++i)
 719               {
 720                 sprintf (buf, "elt%d: ", i);
 721                 print_node (file, buf, TREE_VALUE (link), indent + 4);
 722               }
 723           }
 724           break;
 725
 726         case COMPLEX_CST:
 727           print_node (file, "real", TREE_REALPART (node), indent + 4);
 728           print_node (file, "imag", TREE_IMAGPART (node), indent + 4);
 729           break;
 730
 731         case STRING_CST:
 732           fprintf (file, " \"%s\"", TREE_STRING_POINTER (node));
 733           /* Print the chain at second level.  */
 734           if (indent == 4)
 735             print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 736           else
 737             print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 738           break;
 739
 740         case IDENTIFIER_NODE:
 741           (*lang_hooks.print_identifier) (file, node, indent);
 742           break;
 743
 744         case TREE_LIST:
 745           print_node (file, "purpose", TREE_PURPOSE (node), indent + 4);
 746           print_node (file, "value", TREE_VALUE (node), indent + 4);
 747           print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 748           break;
 749
 750         case TREE_VEC:
 751           len = TREE_VEC_LENGTH (node);
 752           for (i = 0; i < len; i++)
 753             if (TREE_VEC_ELT (node, i))
 754               {
 755                 char temp[10];
 756                 sprintf (temp, "elt %d", i);
 757                 indent_to (file, indent + 4);
 758                 print_node_brief (file, temp, TREE_VEC_ELT (node, i), 0);
 759               }
 760           break;
 761
 762         default:
 763           if (TREE_CODE_CLASS (TREE_CODE (node)) == 'x')
 764             (*lang_hooks.print_xnode) (file, node, indent);
 765           break;
 766         }
 767
 768       break;
 769     }
 770
 771   fprintf (file, ">");
 772 }