gcc/print-tree.c

   1 /* Prints out tree in human readable form - GNU C-compiler
   2    Copyright (C) 1990, 1991, 1993, 1994 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU CC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20
  21 #include "config.h"
  22 #include "tree.h"
  23 #include <stdio.h>
  24
  25 extern char **tree_code_name;
  26
  27 extern char *mode_name[];
  28
  29 void print_node ();
  30 void indent_to ();
  31
  32 /* Define the hash table of nodes already seen.
  33    Such nodes are not repeated; brief cross-references are used.  */
  34
  35 #define HASH_SIZE 37
  36
  37 struct bucket
  38 {
  39   tree node;
  40   struct bucket *next;
  41 };
  42
  43 static struct bucket **table;
  44
  45 /* Print the node NODE on standard error, for debugging.
  46    Most nodes referred to by this one are printed recursively
  47    down to a depth of six.  */
  48
  49 void
  50 debug_tree (node)
  51      tree node;
  52 {
  53   char *object = (char *) oballoc (0);
  54
  55   table = (struct bucket **) oballoc (HASH_SIZE * sizeof (struct bucket *));
  56   bzero ((char *) table, HASH_SIZE * sizeof (struct bucket *));
  57   print_node (stderr, "", node, 0);
  58   table = 0;
  59   obfree (object);
  60   fprintf (stderr, "\n");
  61 }
  62
  63 /* Print a node in brief fashion, with just the code, address and name.  */
  64
  65 void
  66 print_node_brief (file, prefix, node, indent)
  67      FILE *file;
  68      char *prefix;
  69      tree node;
  70      int indent;
  71 {
  72   char class;
  73
  74   if (node == 0)
  75     return;
  76
  77   class = TREE_CODE_CLASS (TREE_CODE (node));
  78
  79   /* Always print the slot this node is in, and its code, address and
  80      name if any.  */
  81   if (indent > 0)
  82     fprintf (file, " ");
  83   fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
  84   fprintf (file, HOST_PTR_PRINTF, (HOST_WIDE_INT) node);
  85
  86   if (class == 'd')
  87     {
  88       if (DECL_NAME (node))
  89         fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
  90     }
  91   else if (class == 't')
  92     {
  93       if (TYPE_NAME (node))
  94         {
  95           if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
  96             fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
  97           else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
  98                    && DECL_NAME (TYPE_NAME (node)))
  99             fprintf (file, " %s",
 100                      IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
 101         }
 102     }
 103   if (TREE_CODE (node) == IDENTIFIER_NODE)
 104     fprintf (file, " %s", IDENTIFIER_POINTER (node));
 105   /* We might as well always print the value of an integer.  */
 106   if (TREE_CODE (node) == INTEGER_CST)
 107     {
 108       if (TREE_CONSTANT_OVERFLOW (node))
 109         fprintf (file, " overflow");
 110
 111       if (TREE_INT_CST_HIGH (node) == 0)
 112         fprintf (file,
 113 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
 114                  " %1u",
 115 #else
 116                  " %1lu",
 117 #endif
 118                  TREE_INT_CST_LOW (node));
 119       else if (TREE_INT_CST_HIGH (node) == -1
 120                && TREE_INT_CST_LOW (node) != 0)
 121         fprintf (file,
 122 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
 123                  " -%1u",
 124 #else
 125                  " -%1lu",
 126 #endif
 127                  -TREE_INT_CST_LOW (node));
 128       else
 129         fprintf (file,
 130 #if HOST_BITS_PER_WIDE_INT == 64
 131 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
 132                  " 0x%lx%016lx",
 133 #else
 134                  " 0x%x%016x",
 135 #endif
 136 #else
 137 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
 138                  " 0x%lx%08lx",
 139 #else
 140                  " 0x%x%08x",
 141 #endif
 142 #endif
 143                  TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
 144     }
 145   if (TREE_CODE (node) == REAL_CST)
 146     {
 147       REAL_VALUE_TYPE d;
 148
 149       if (TREE_OVERFLOW (node))
 150         fprintf (file, " overflow");
 151
 152 #if !defined(REAL_IS_NOT_DOUBLE) || defined(REAL_ARITHMETIC)
 153       d = TREE_REAL_CST (node);
 154       if (REAL_VALUE_ISINF (d))
 155         fprintf (file, " Inf");
 156       else if (REAL_VALUE_ISNAN (d))
 157         fprintf (file, " Nan");
 158       else
 159         {
 160           char string[100];
 161
 162           REAL_VALUE_TO_DECIMAL (d, "%e", string);
 163           fprintf (file, " %s", string);
 164         }
 165 #else
 166       {
 167         int i;
 168         unsigned char *p = (unsigned char *) &TREE_REAL_CST (node);
 169         fprintf (file, " 0x");
 170         for (i = 0; i < sizeof TREE_REAL_CST (node); i++)
 171           fprintf (file, "%02x", *p++);
 172         fprintf (file, "");
 173       }
 174 #endif
 175     }
 176
 177   fprintf (file, ">");
 178 }
 179
 180 void
 181 indent_to (file, column)
 182      FILE *file;
 183      int column;
 184 {
 185   int i;
 186
 187   /* Since this is the long way, indent to desired column.  */
 188   if (column > 0)
 189     fprintf (file, "\n");
 190   for (i = 0; i < column; i++)
 191     fprintf (file, " ");
 192 }
 193 \f
 194 /* Print the node NODE in full on file FILE, preceded by PREFIX,
 195    starting in column INDENT.  */
 196
 197 void
 198 print_node (file, prefix, node, indent)
 199      FILE *file;
 200      char *prefix;
 201      tree node;
 202      int indent;
 203 {
 204   int hash;
 205   struct bucket *b;
 206   enum machine_mode mode;
 207   char class;
 208   int len;
 209   int first_rtl;
 210   int i;
 211
 212   if (node == 0)
 213     return;
 214
 215   class = TREE_CODE_CLASS (TREE_CODE (node));
 216
 217   /* Don't get too deep in nesting.  If the user wants to see deeper,
 218      it is easy to use the address of a lowest-level node
 219      as an argument in another call to debug_tree.  */
 220
 221   if (indent > 24)
 222     {
 223       print_node_brief (file, prefix, node, indent);
 224       return;
 225     }
 226
 227   if (indent > 8 && (class == 't' || class == 'd'))
 228     {
 229       print_node_brief (file, prefix, node, indent);
 230       return;
 231     }
 232
 233   /* It is unsafe to look at any other filds of an ERROR_MARK node. */
 234   if (TREE_CODE (node) == ERROR_MARK)
 235     {
 236       print_node_brief (file, prefix, node, indent);
 237       return;
 238     }
 239
 240   hash = ((unsigned HOST_WIDE_INT) node) % HASH_SIZE;
 241
 242   /* If node is in the table, just mention its address.  */
 243   for (b = table[hash]; b; b = b->next)
 244     if (b->node == node)
 245       {
 246         print_node_brief (file, prefix, node, indent);
 247         return;
 248       }
 249
 250   /* Add this node to the table.  */
 251   b = (struct bucket *) oballoc (sizeof (struct bucket));
 252   b->node = node;
 253   b->next = table[hash];
 254   table[hash] = b;
 255
 256   /* Indent to the specified column, since this is the long form.  */
 257   indent_to (file, indent);
 258
 259   /* Print the slot this node is in, and its code, and address.  */
 260   fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
 261   fprintf (file, HOST_PTR_PRINTF, (HOST_WIDE_INT) node);
 262
 263   /* Print the name, if any.  */
 264   if (class == 'd')
 265     {
 266       if (DECL_NAME (node))
 267         fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
 268     }
 269   else if (class == 't')
 270     {
 271       if (TYPE_NAME (node))
 272         {
 273           if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
 274             fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
 275           else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
 276                    && DECL_NAME (TYPE_NAME (node)))
 277             fprintf (file, " %s",
 278                      IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
 279         }
 280     }
 281   if (TREE_CODE (node) == IDENTIFIER_NODE)
 282     fprintf (file, " %s", IDENTIFIER_POINTER (node));
 283
 284   if (TREE_CODE (node) == INTEGER_CST)
 285     {
 286       if (indent <= 4)
 287         print_node_brief (file, "type", TREE_TYPE (node), indent + 4);
 288     }
 289   else
 290     {
 291       print_node (file, "type", TREE_TYPE (node), indent + 4);
 292       if (TREE_TYPE (node))
 293         indent_to (file, indent + 3);
 294
 295       print_obstack_name ((char *) node, file, "");
 296       indent_to (file, indent + 3);
 297     }
 298
 299   /* If a permanent object is in the wrong obstack, or the reverse, warn.  */
 300   if (object_permanent_p (node) != TREE_PERMANENT (node))
 301     {
 302       if (TREE_PERMANENT (node))
 303         fputs (" !!permanent object in non-permanent obstack!!", file);
 304       else
 305         fputs (" !!non-permanent object in permanent obstack!!", file);
 306       indent_to (file, indent + 3);
 307     }
 308
 309   if (TREE_SIDE_EFFECTS (node))
 310     fputs (" side-effects", file);
 311   if (TREE_READONLY (node))
 312     fputs (" readonly", file);
 313   if (TREE_CONSTANT (node))
 314     fputs (" constant", file);
 315   if (TREE_ADDRESSABLE (node))
 316     fputs (" addressable", file);
 317   if (TREE_THIS_VOLATILE (node))
 318     fputs (" volatile", file);
 319   if (TREE_UNSIGNED (node))
 320     fputs (" unsigned", file);
 321   if (TREE_ASM_WRITTEN (node))
 322     fputs (" asm_written", file);
 323   if (TREE_USED (node))
 324     fputs (" used", file);
 325   if (TREE_RAISES (node))
 326     fputs (" raises", file);
 327   if (TREE_PERMANENT (node))
 328     fputs (" permanent", file);
 329   if (TREE_PUBLIC (node))
 330     fputs (" public", file);
 331   if (TREE_STATIC (node))
 332     fputs (" static", file);
 333   if (TREE_LANG_FLAG_0 (node))
 334     fputs (" tree_0", file);
 335   if (TREE_LANG_FLAG_1 (node))
 336     fputs (" tree_1", file);
 337   if (TREE_LANG_FLAG_2 (node))
 338     fputs (" tree_2", file);
 339   if (TREE_LANG_FLAG_3 (node))
 340     fputs (" tree_3", file);
 341   if (TREE_LANG_FLAG_4 (node))
 342     fputs (" tree_4", file);
 343   if (TREE_LANG_FLAG_5 (node))
 344     fputs (" tree_5", file);
 345   if (TREE_LANG_FLAG_6 (node))
 346     fputs (" tree_6", file);
 347
 348   /* DECL_ nodes have additional attributes.  */
 349
 350   switch (TREE_CODE_CLASS (TREE_CODE (node)))
 351     {
 352     case 'd':
 353       mode = DECL_MODE (node);
 354
 355       if (DECL_EXTERNAL (node))
 356         fputs (" external", file);
 357       if (DECL_NONLOCAL (node))
 358         fputs (" nonlocal", file);
 359       if (DECL_REGISTER (node))
 360         fputs (" regdecl", file);
 361       if (DECL_INLINE (node))
 362         fputs (" inline", file);
 363       if (DECL_BIT_FIELD (node))
 364         fputs (" bit-field", file);
 365       if (DECL_VIRTUAL_P (node))
 366         fputs (" virtual", file);
 367       if (DECL_IGNORED_P (node))
 368         fputs (" ignored", file);
 369       if (DECL_IN_SYSTEM_HEADER (node))
 370         fputs (" in_system_header", file);
 371       if (DECL_LANG_FLAG_0 (node))
 372         fputs (" decl_0", file);
 373       if (DECL_LANG_FLAG_1 (node))
 374         fputs (" decl_1", file);
 375       if (DECL_LANG_FLAG_2 (node))
 376         fputs (" decl_2", file);
 377       if (DECL_LANG_FLAG_3 (node))
 378         fputs (" decl_3", file);
 379       if (DECL_LANG_FLAG_4 (node))
 380         fputs (" decl_4", file);
 381       if (DECL_LANG_FLAG_5 (node))
 382         fputs (" decl_5", file);
 383       if (DECL_LANG_FLAG_6 (node))
 384         fputs (" decl_6", file);
 385       if (DECL_LANG_FLAG_7 (node))
 386         fputs (" decl_7", file);
 387
 388       fprintf (file, " %s", mode_name[(int) mode]);
 389
 390       fprintf (file, " file %s line %d",
 391                DECL_SOURCE_FILE (node), DECL_SOURCE_LINE (node));
 392
 393       print_node (file, "size", DECL_SIZE (node), indent + 4);
 394       indent_to (file, indent + 3);
 395       if (TREE_CODE (node) != FUNCTION_DECL)
 396         fprintf (file, " align %d", DECL_ALIGN (node));
 397       else if (DECL_INLINE (node))
 398         fprintf (file, " frame_size %d", DECL_FRAME_SIZE (node));
 399       else if (DECL_BUILT_IN (node))
 400         fprintf (file, " built-in code %d", DECL_FUNCTION_CODE (node));
 401       if (TREE_CODE (node) == FIELD_DECL)
 402         print_node (file, "bitpos", DECL_FIELD_BITPOS (node), indent + 4);
 403       print_node_brief (file, "context", DECL_CONTEXT (node), indent + 4);
 404       print_node_brief (file, "abstract_origin",
 405                         DECL_ABSTRACT_ORIGIN (node), indent + 4);
 406
 407       print_node (file, "arguments", DECL_ARGUMENTS (node), indent + 4);
 408       print_node (file, "result", DECL_RESULT (node), indent + 4);
 409       print_node_brief (file, "initial", DECL_INITIAL (node), indent + 4);
 410
 411       print_lang_decl (file, node, indent);
 412
 413       if (DECL_RTL (node) != 0)
 414         {
 415           indent_to (file, indent + 4);
 416           print_rtl (file, DECL_RTL (node));
 417         }
 418
 419       if (DECL_SAVED_INSNS (node) != 0)
 420         {
 421           indent_to (file, indent + 4);
 422           if (TREE_CODE (node) == PARM_DECL)
 423             {
 424               fprintf (file, "incoming-rtl ");
 425               print_rtl (file, DECL_INCOMING_RTL (node));
 426             }
 427           else if (TREE_CODE (node) == FUNCTION_DECL)
 428             {
 429               fprintf (file, "saved-insns ");
 430               fprintf (file, HOST_PTR_PRINTF,
 431                        (HOST_WIDE_INT) DECL_SAVED_INSNS (node));
 432             }
 433         }
 434
 435       /* Print the decl chain only if decl is at second level.  */
 436       if (indent == 4)
 437         print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 438       else
 439         print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 440       break;
 441
 442     case 't':
 443       if (TYPE_NO_FORCE_BLK (node))
 444         fputs (" no_force_blk", file);
 445       if (TYPE_LANG_FLAG_0 (node))
 446         fputs (" type_0", file);
 447       if (TYPE_LANG_FLAG_1 (node))
 448         fputs (" type_1", file);
 449       if (TYPE_LANG_FLAG_2 (node))
 450         fputs (" type_2", file);
 451       if (TYPE_LANG_FLAG_3 (node))
 452         fputs (" type_3", file);
 453       if (TYPE_LANG_FLAG_4 (node))
 454         fputs (" type_4", file);
 455       if (TYPE_LANG_FLAG_5 (node))
 456         fputs (" type_5", file);
 457       if (TYPE_LANG_FLAG_6 (node))
 458         fputs (" type_6", file);
 459
 460       mode = TYPE_MODE (node);
 461       fprintf (file, " %s", mode_name[(int) mode]);
 462
 463       print_node (file, "size", TYPE_SIZE (node), indent + 4);
 464       indent_to (file, indent + 3);
 465
 466       fprintf (file, " align %d", TYPE_ALIGN (node));
 467       fprintf (file, " symtab %d", TYPE_SYMTAB_ADDRESS (node));
 468
 469       print_node (file, "attributes", TYPE_ATTRIBUTES (node), indent + 4);
 470
 471       if (TREE_CODE (node) == ARRAY_TYPE || TREE_CODE (node) == SET_TYPE)
 472         print_node (file, "domain", TYPE_DOMAIN (node), indent + 4);
 473       else if (TREE_CODE (node) == INTEGER_TYPE
 474                || TREE_CODE (node) == BOOLEAN_TYPE
 475                || TREE_CODE (node) == CHAR_TYPE)
 476         {
 477           fprintf (file, " precision %d", TYPE_PRECISION (node));
 478           print_node (file, "min", TYPE_MIN_VALUE (node), indent + 4);
 479           print_node (file, "max", TYPE_MAX_VALUE (node), indent + 4);
 480         }
 481       else if (TREE_CODE (node) == ENUMERAL_TYPE)
 482         {
 483           fprintf (file, " precision %d", TYPE_PRECISION (node));
 484           print_node (file, "min", TYPE_MIN_VALUE (node), indent + 4);
 485           print_node (file, "max", TYPE_MAX_VALUE (node), indent + 4);
 486           print_node (file, "values", TYPE_VALUES (node), indent + 4);
 487         }
 488       else if (TREE_CODE (node) == REAL_TYPE)
 489         fprintf (file, " precision %d", TYPE_PRECISION (node));
 490       else if (TREE_CODE (node) == RECORD_TYPE
 491                || TREE_CODE (node) == UNION_TYPE
 492                || TREE_CODE (node) == QUAL_UNION_TYPE)
 493         print_node (file, "fields", TYPE_FIELDS (node), indent + 4);
 494       else if (TREE_CODE (node) == FUNCTION_TYPE || TREE_CODE (node) == METHOD_TYPE)
 495         {
 496           if (TYPE_METHOD_BASETYPE (node))
 497             print_node_brief (file, "method basetype", TYPE_METHOD_BASETYPE (node), indent + 4);
 498           print_node (file, "arg-types", TYPE_ARG_TYPES (node), indent + 4);
 499         }
 500       if (TYPE_CONTEXT (node))
 501         print_node_brief (file, "context", TYPE_CONTEXT (node), indent + 4);
 502
 503       print_lang_type (file, node, indent);
 504
 505       if (TYPE_POINTER_TO (node) || TREE_CHAIN (node))
 506         indent_to (file, indent + 3);
 507       print_node_brief (file, "pointer_to_this", TYPE_POINTER_TO (node), indent + 4);
 508       print_node_brief (file, "reference_to_this", TYPE_REFERENCE_TO (node), indent + 4);
 509       print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 510       break;
 511
 512     case 'b':
 513       print_node (file, "vars", BLOCK_VARS (node), indent + 4);
 514       print_node (file, "tags", BLOCK_TYPE_TAGS (node), indent + 4);
 515       print_node (file, "supercontext", BLOCK_SUPERCONTEXT (node), indent + 4);
 516       print_node (file, "subblocks", BLOCK_SUBBLOCKS (node), indent + 4);
 517       print_node (file, "chain", BLOCK_CHAIN (node), indent + 4);
 518       print_node (file, "abstract_origin",
 519                   BLOCK_ABSTRACT_ORIGIN (node), indent + 4);
 520       return;
 521
 522     case 'e':
 523     case '<':
 524     case '1':
 525     case '2':
 526     case 'r':
 527     case 's':
 528       switch (TREE_CODE (node))
 529         {
 530         case BIND_EXPR:
 531           print_node (file, "vars", TREE_OPERAND (node, 0), indent + 4);
 532           print_node (file, "body", TREE_OPERAND (node, 1), indent + 4);
 533           print_node (file, "block", TREE_OPERAND (node, 2), indent + 4);
 534           return;
 535         }
 536
 537       first_rtl = len = tree_code_length[(int) TREE_CODE (node)];
 538       /* These kinds of nodes contain rtx's, not trees,
 539          after a certain point.  Print the rtx's as rtx's.  */
 540       switch (TREE_CODE (node))
 541         {
 542         case SAVE_EXPR:
 543           first_rtl = 2;
 544           break;
 545         case CALL_EXPR:
 546           first_rtl = 2;
 547           break;
 548         case METHOD_CALL_EXPR:
 549           first_rtl = 3;
 550           break;
 551         case WITH_CLEANUP_EXPR:
 552           /* Should be defined to be 2.  */
 553           first_rtl = 1;
 554           break;
 555         case RTL_EXPR:
 556           first_rtl = 0;
 557         }
 558       for (i = 0; i < len; i++)
 559         {
 560           if (i >= first_rtl)
 561             {
 562               indent_to (file, indent + 4);
 563               fprintf (file, "rtl %d ", i);
 564               if (TREE_OPERAND (node, i))
 565                 print_rtl (file, (struct rtx_def *) TREE_OPERAND (node, i));
 566               else
 567                 fprintf (file, "(nil)");
 568               fprintf (file, "\n");
 569             }
 570           else
 571             {
 572               char temp[10];
 573
 574               sprintf (temp, "arg %d", i);
 575               print_node (file, temp, TREE_OPERAND (node, i), indent + 4);
 576             }
 577         }
 578       break;
 579
 580     case 'c':
 581     case 'x':
 582       switch (TREE_CODE (node))
 583         {
 584         case INTEGER_CST:
 585           if (TREE_CONSTANT_OVERFLOW (node))
 586             fprintf (file, " overflow");
 587
 588           if (TREE_INT_CST_HIGH (node) == 0)
 589             fprintf (file,
 590 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
 591                      " %1u",
 592 #else
 593                      " %1lu",
 594 #endif
 595                      TREE_INT_CST_LOW (node));
 596           else if (TREE_INT_CST_HIGH (node) == -1
 597                    && TREE_INT_CST_LOW (node) != 0)
 598             fprintf (file,
 599 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
 600                      " -%1u",
 601 #else
 602                      " -%1lu",
 603 #endif
 604                      -TREE_INT_CST_LOW (node));
 605           else
 606             fprintf (file,
 607 #if HOST_BITS_PER_WIDE_INT == 64
 608 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
 609                      " 0x%lx%016lx",
 610 #else
 611                      " 0x%x%016x",
 612 #endif
 613 #else
 614 #if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
 615                      " 0x%lx%08lx",
 616 #else
 617                      " 0x%x%08x",
 618 #endif
 619 #endif
 620                      TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
 621           break;
 622
 623         case REAL_CST:
 624           {
 625             REAL_VALUE_TYPE d;
 626
 627             if (TREE_OVERFLOW (node))
 628               fprintf (file, " overflow");
 629
 630 #if !defined(REAL_IS_NOT_DOUBLE) || defined(REAL_ARITHMETIC)
 631             d = TREE_REAL_CST (node);
 632             if (REAL_VALUE_ISINF (d))
 633               fprintf (file, " Inf");
 634             else if (REAL_VALUE_ISNAN (d))
 635               fprintf (file, " Nan");
 636             else
 637               {
 638                 char string[100];
 639
 640                 REAL_VALUE_TO_DECIMAL (d, "%e", string);
 641                 fprintf (file, " %s", string);
 642               }
 643 #else
 644             {
 645               int i;
 646               unsigned char *p = (unsigned char *) &TREE_REAL_CST (node);
 647               fprintf (file, " 0x");
 648               for (i = 0; i < sizeof TREE_REAL_CST (node); i++)
 649                 fprintf (file, "%02x", *p++);
 650               fprintf (file, "");
 651             }
 652 #endif
 653           }
 654           break;
 655
 656         case COMPLEX_CST:
 657           print_node (file, "real", TREE_REALPART (node), indent + 4);
 658           print_node (file, "imag", TREE_IMAGPART (node), indent + 4);
 659           break;
 660
 661         case STRING_CST:
 662           fprintf (file, " \"%s\"", TREE_STRING_POINTER (node));
 663           /* Print the chain at second level.  */
 664           if (indent == 4)
 665             print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 666           else
 667             print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
 668           break;
 669
 670         case IDENTIFIER_NODE:
 671           print_lang_identifier (file, node, indent);
 672           break;
 673
 674         case TREE_LIST:
 675           print_node (file, "purpose", TREE_PURPOSE (node), indent + 4);
 676           print_node (file, "value", TREE_VALUE (node), indent + 4);
 677           print_node (file, "chain", TREE_CHAIN (node), indent + 4);
 678           break;
 679
 680         case TREE_VEC:
 681           len = TREE_VEC_LENGTH (node);
 682           for (i = 0; i < len; i++)
 683             if (TREE_VEC_ELT (node, i))
 684               {
 685                 char temp[10];
 686                 sprintf (temp, "elt %d", i);
 687                 indent_to (file, indent + 4);
 688                 print_node_brief (file, temp, TREE_VEC_ELT (node, i), 0);
 689               }
 690           break;
 691
 692         case OP_IDENTIFIER:
 693           print_node (file, "op1", TREE_PURPOSE (node), indent + 4);
 694           print_node (file, "op2", TREE_VALUE (node), indent + 4);
 695         }
 696
 697       break;
 698     }
 699
 700   fprintf (file, ">");
 701 }