623 lines
17 KiB
C
623 lines
17 KiB
C
/* Prints out tree in human readable form - GNU C-compiler
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Copyright (C) 1990, 1991 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "config.h"
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#include "tree.h"
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#include <stdio.h>
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extern char **tree_code_name;
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extern char *mode_name[];
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void print_node ();
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void indent_to ();
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/* Define the hash table of nodes already seen.
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Such nodes are not repeated; brief cross-references are used. */
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#define HASH_SIZE 37
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struct bucket
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{
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tree node;
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struct bucket *next;
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};
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static struct bucket **table;
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/* Print the node NODE on standard error, for debugging.
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Most nodes referred to by this one are printed recursively
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down to a depth of six. */
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void
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debug_tree (node)
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tree node;
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{
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char *object = (char *) oballoc (0);
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table = (struct bucket **) oballoc (HASH_SIZE * sizeof (struct bucket *));
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bzero (table, HASH_SIZE * sizeof (struct bucket *));
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print_node (stderr, "", node, 0);
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table = 0;
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obfree (object);
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fprintf (stderr, "\n");
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}
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/* Print a node in brief fashion, with just the code, address and name. */
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void
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print_node_brief (file, prefix, node, indent)
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FILE *file;
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char *prefix;
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tree node;
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int indent;
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{
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char class;
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if (node == 0)
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return;
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class = TREE_CODE_CLASS (TREE_CODE (node));
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/* Always print the slot this node is in, and its code, address and
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name if any. */
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if (indent > 0)
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fprintf (file, " ");
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fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
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fprintf (file, HOST_PTR_PRINTF, node);
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if (class == 'd')
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{
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if (DECL_NAME (node))
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fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
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}
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else if (class == 't')
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{
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if (TYPE_NAME (node))
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{
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if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
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fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
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else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
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&& DECL_NAME (TYPE_NAME (node)))
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fprintf (file, " %s",
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IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
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}
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}
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if (TREE_CODE (node) == IDENTIFIER_NODE)
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fprintf (file, " %s", IDENTIFIER_POINTER (node));
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/* We might as well always print the value of an integer. */
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if (TREE_CODE (node) == INTEGER_CST)
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{
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if (TREE_INT_CST_HIGH (node) == 0)
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fprintf (file, " %1u", TREE_INT_CST_LOW (node));
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else if (TREE_INT_CST_HIGH (node) == -1
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&& TREE_INT_CST_LOW (node) != 0)
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fprintf (file, " -%1u", -TREE_INT_CST_LOW (node));
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else
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fprintf (file,
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#if HOST_BITS_PER_WIDE_INT == 64
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#if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
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" 0x%lx%016lx",
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#else
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" 0x%x%016x",
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#endif
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#else
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#if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
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" 0x%lx%08lx",
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#else
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" 0x%x%08x",
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#endif
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#endif
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TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
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}
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if (TREE_CODE (node) == REAL_CST)
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{
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#ifndef REAL_IS_NOT_DOUBLE
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fprintf (file, " %e", TREE_REAL_CST (node));
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#else
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{
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int i;
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char *p = (char *) &TREE_REAL_CST (node);
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fprintf (file, " 0x");
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for (i = 0; i < sizeof TREE_REAL_CST (node); i++)
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fprintf (file, "%02x", *p++);
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fprintf (file, "");
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}
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#endif /* REAL_IS_NOT_DOUBLE */
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}
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fprintf (file, ">");
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}
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void
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indent_to (file, column)
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FILE *file;
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int column;
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{
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int i;
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/* Since this is the long way, indent to desired column. */
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if (column > 0)
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fprintf (file, "\n");
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for (i = 0; i < column; i++)
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fprintf (file, " ");
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}
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/* Print the node NODE in full on file FILE, preceded by PREFIX,
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starting in column INDENT. */
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void
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print_node (file, prefix, node, indent)
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FILE *file;
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char *prefix;
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tree node;
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int indent;
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{
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int hash;
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struct bucket *b;
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enum machine_mode mode;
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char class;
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int len;
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int first_rtl;
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int i;
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if (node == 0)
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return;
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class = TREE_CODE_CLASS (TREE_CODE (node));
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/* Don't get too deep in nesting. If the user wants to see deeper,
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it is easy to use the address of a lowest-level node
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as an argument in another call to debug_tree. */
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if (indent > 24)
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{
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print_node_brief (file, prefix, node, indent);
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return;
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}
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if (indent > 8 && (class == 't' || class == 'd'))
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{
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print_node_brief (file, prefix, node, indent);
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return;
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}
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/* It is unsafe to look at any other filds of an ERROR_MARK node. */
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if (TREE_CODE (node) == ERROR_MARK)
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{
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print_node_brief (file, prefix, node, indent);
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return;
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}
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hash = ((unsigned HOST_WIDE_INT) node) % HASH_SIZE;
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/* If node is in the table, just mention its address. */
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for (b = table[hash]; b; b = b->next)
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if (b->node == node)
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{
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print_node_brief (file, prefix, node, indent);
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return;
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}
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/* Add this node to the table. */
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b = (struct bucket *) oballoc (sizeof (struct bucket));
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b->node = node;
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b->next = table[hash];
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table[hash] = b;
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/* Indent to the specified column, since this is the long form. */
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indent_to (file, indent);
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/* Print the slot this node is in, and its code, and address. */
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fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
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fprintf (file, HOST_PTR_PRINTF, node);
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/* Print the name, if any. */
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if (class == 'd')
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{
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if (DECL_NAME (node))
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fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
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}
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else if (class == 't')
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{
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if (TYPE_NAME (node))
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{
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if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
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fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
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else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
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&& DECL_NAME (TYPE_NAME (node)))
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fprintf (file, " %s",
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IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
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}
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}
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if (TREE_CODE (node) == IDENTIFIER_NODE)
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fprintf (file, " %s", IDENTIFIER_POINTER (node));
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if (TREE_CODE (node) == INTEGER_CST)
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{
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if (indent <= 4)
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print_node_brief (file, "type", TREE_TYPE (node), indent + 4);
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}
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else
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{
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print_node (file, "type", TREE_TYPE (node), indent + 4);
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if (TREE_TYPE (node))
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indent_to (file, indent + 3);
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}
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/* If a permanent object is in the wrong obstack, or the reverse, warn. */
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if (object_permanent_p (node) != TREE_PERMANENT (node))
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{
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if (TREE_PERMANENT (node))
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fputs (" !!permanent object in non-permanent obstack!!", file);
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else
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fputs (" !!non-permanent object in permanent obstack!!", file);
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indent_to (file, indent + 3);
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}
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if (TREE_SIDE_EFFECTS (node))
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fputs (" side-effects", file);
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if (TREE_READONLY (node))
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fputs (" readonly", file);
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if (TREE_CONSTANT (node))
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fputs (" constant", file);
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if (TREE_ADDRESSABLE (node))
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fputs (" addressable", file);
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if (TREE_THIS_VOLATILE (node))
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fputs (" volatile", file);
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if (TREE_UNSIGNED (node))
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fputs (" unsigned", file);
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if (TREE_ASM_WRITTEN (node))
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fputs (" asm_written", file);
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if (TREE_USED (node))
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fputs (" used", file);
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if (TREE_RAISES (node))
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fputs (" raises", file);
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if (TREE_PERMANENT (node))
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fputs (" permanent", file);
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if (TREE_PUBLIC (node))
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fputs (" public", file);
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if (TREE_STATIC (node))
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fputs (" static", file);
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if (TREE_LANG_FLAG_0 (node))
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fputs (" tree_0", file);
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if (TREE_LANG_FLAG_1 (node))
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fputs (" tree_1", file);
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if (TREE_LANG_FLAG_2 (node))
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fputs (" tree_2", file);
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if (TREE_LANG_FLAG_3 (node))
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fputs (" tree_3", file);
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if (TREE_LANG_FLAG_4 (node))
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fputs (" tree_4", file);
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if (TREE_LANG_FLAG_5 (node))
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fputs (" tree_5", file);
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if (TREE_LANG_FLAG_6 (node))
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fputs (" tree_6", file);
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/* DECL_ nodes have additional attributes. */
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switch (TREE_CODE_CLASS (TREE_CODE (node)))
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{
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case 'd':
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mode = DECL_MODE (node);
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if (DECL_EXTERNAL (node))
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fputs (" external", file);
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if (DECL_NONLOCAL (node))
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fputs (" nonlocal", file);
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if (DECL_REGISTER (node))
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fputs (" regdecl", file);
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if (DECL_INLINE (node))
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fputs (" inline", file);
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if (DECL_BIT_FIELD (node))
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fputs (" bit-field", file);
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if (DECL_VIRTUAL_P (node))
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fputs (" virtual", file);
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if (DECL_IGNORED_P (node))
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fputs (" ignored", file);
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if (DECL_IN_SYSTEM_HEADER (node))
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fputs (" in_system_header", file);
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if (DECL_LANG_FLAG_0 (node))
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fputs (" decl_0", file);
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if (DECL_LANG_FLAG_1 (node))
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fputs (" decl_1", file);
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if (DECL_LANG_FLAG_2 (node))
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fputs (" decl_2", file);
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if (DECL_LANG_FLAG_3 (node))
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fputs (" decl_3", file);
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if (DECL_LANG_FLAG_4 (node))
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fputs (" decl_4", file);
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||
if (DECL_LANG_FLAG_5 (node))
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fputs (" decl_5", file);
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||
if (DECL_LANG_FLAG_6 (node))
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fputs (" decl_6", file);
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if (DECL_LANG_FLAG_7 (node))
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fputs (" decl_7", file);
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||
|
||
fprintf (file, " %s", mode_name[(int) mode]);
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||
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||
fprintf (file, " file %s line %d",
|
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DECL_SOURCE_FILE (node), DECL_SOURCE_LINE (node));
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||
|
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print_node (file, "size", DECL_SIZE (node), indent + 4);
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||
indent_to (file, indent + 3);
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if (TREE_CODE (node) != FUNCTION_DECL)
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fprintf (file, " align %d", DECL_ALIGN (node));
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else if (DECL_INLINE (node))
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fprintf (file, " frame_size %d", DECL_FRAME_SIZE (node));
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else if (DECL_BUILT_IN (node))
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fprintf (file, " built-in code %d", DECL_FUNCTION_CODE (node));
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if (TREE_CODE (node) == FIELD_DECL)
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||
print_node (file, "bitpos", DECL_FIELD_BITPOS (node), indent + 4);
|
||
print_node_brief (file, "context", DECL_CONTEXT (node), indent + 4);
|
||
print_node_brief (file, "abstract_origin",
|
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DECL_ABSTRACT_ORIGIN (node), indent + 4);
|
||
|
||
print_node (file, "arguments", DECL_ARGUMENTS (node), indent + 4);
|
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print_node (file, "result", DECL_RESULT (node), indent + 4);
|
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print_node_brief (file, "initial", DECL_INITIAL (node), indent + 4);
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||
|
||
print_lang_decl (file, node, indent);
|
||
|
||
if (DECL_RTL (node) != 0)
|
||
{
|
||
indent_to (file, indent + 4);
|
||
print_rtl (file, DECL_RTL (node));
|
||
}
|
||
|
||
if (DECL_SAVED_INSNS (node) != 0)
|
||
{
|
||
indent_to (file, indent + 4);
|
||
if (TREE_CODE (node) == PARM_DECL)
|
||
{
|
||
fprintf (file, "incoming-rtl ");
|
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print_rtl (file, DECL_INCOMING_RTL (node));
|
||
}
|
||
else if (TREE_CODE (node) == FUNCTION_DECL)
|
||
{
|
||
fprintf (file, "saved-insns ");
|
||
fprintf (file, HOST_PTR_PRINTF, DECL_SAVED_INSNS (node));
|
||
}
|
||
}
|
||
|
||
/* Print the decl chain only if decl is at second level. */
|
||
if (indent == 4)
|
||
print_node (file, "chain", TREE_CHAIN (node), indent + 4);
|
||
else
|
||
print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
|
||
break;
|
||
|
||
case 't':
|
||
if (TYPE_NO_FORCE_BLK (node))
|
||
fputs (" no_force_blk", file);
|
||
if (TYPE_LANG_FLAG_0 (node))
|
||
fputs (" type_0", file);
|
||
if (TYPE_LANG_FLAG_1 (node))
|
||
fputs (" type_1", file);
|
||
if (TYPE_LANG_FLAG_2 (node))
|
||
fputs (" type_2", file);
|
||
if (TYPE_LANG_FLAG_3 (node))
|
||
fputs (" type_3", file);
|
||
if (TYPE_LANG_FLAG_4 (node))
|
||
fputs (" type_4", file);
|
||
if (TYPE_LANG_FLAG_5 (node))
|
||
fputs (" type_5", file);
|
||
if (TYPE_LANG_FLAG_6 (node))
|
||
fputs (" type_6", file);
|
||
|
||
mode = TYPE_MODE (node);
|
||
fprintf (file, " %s", mode_name[(int) mode]);
|
||
|
||
print_node (file, "size", TYPE_SIZE (node), indent + 4);
|
||
indent_to (file, indent + 3);
|
||
|
||
fprintf (file, " align %d", TYPE_ALIGN (node));
|
||
fprintf (file, " symtab %d", TYPE_SYMTAB_ADDRESS (node));
|
||
|
||
if (TREE_CODE (node) == ARRAY_TYPE || TREE_CODE (node) == SET_TYPE)
|
||
print_node (file, "domain", TYPE_DOMAIN (node), indent + 4);
|
||
else if (TREE_CODE (node) == INTEGER_TYPE
|
||
|| TREE_CODE (node) == BOOLEAN_TYPE
|
||
|| TREE_CODE (node) == CHAR_TYPE)
|
||
{
|
||
fprintf (file, " precision %d", TYPE_PRECISION (node));
|
||
print_node (file, "min", TYPE_MIN_VALUE (node), indent + 4);
|
||
print_node (file, "max", TYPE_MAX_VALUE (node), indent + 4);
|
||
}
|
||
else if (TREE_CODE (node) == ENUMERAL_TYPE)
|
||
{
|
||
fprintf (file, " precision %d", TYPE_PRECISION (node));
|
||
print_node (file, "min", TYPE_MIN_VALUE (node), indent + 4);
|
||
print_node (file, "max", TYPE_MAX_VALUE (node), indent + 4);
|
||
print_node (file, "values", TYPE_VALUES (node), indent + 4);
|
||
}
|
||
else if (TREE_CODE (node) == REAL_TYPE)
|
||
fprintf (file, " precision %d", TYPE_PRECISION (node));
|
||
else if (TREE_CODE (node) == RECORD_TYPE || TREE_CODE (node) == UNION_TYPE)
|
||
print_node (file, "fields", TYPE_FIELDS (node), indent + 4);
|
||
else if (TREE_CODE (node) == FUNCTION_TYPE || TREE_CODE (node) == METHOD_TYPE)
|
||
{
|
||
if (TYPE_METHOD_BASETYPE (node))
|
||
print_node_brief (file, "method basetype", TYPE_METHOD_BASETYPE (node), indent + 4);
|
||
print_node (file, "arg-types", TYPE_ARG_TYPES (node), indent + 4);
|
||
}
|
||
if (TYPE_CONTEXT (node))
|
||
print_node_brief (file, "context", TYPE_CONTEXT (node), indent + 4);
|
||
|
||
print_lang_type (file, node, indent);
|
||
|
||
if (TYPE_POINTER_TO (node) || TREE_CHAIN (node))
|
||
indent_to (file, indent + 3);
|
||
print_node_brief (file, "pointer_to_this", TYPE_POINTER_TO (node), indent + 4);
|
||
print_node_brief (file, "reference_to_this", TYPE_REFERENCE_TO (node), indent + 4);
|
||
print_node_brief (file, "chain", TREE_CHAIN (node), indent + 4);
|
||
break;
|
||
|
||
case 'b':
|
||
print_node (file, "vars", BLOCK_VARS (node), indent + 4);
|
||
print_node (file, "tags", BLOCK_TYPE_TAGS (node), indent + 4);
|
||
print_node (file, "supercontext", BLOCK_SUPERCONTEXT (node), indent + 4);
|
||
print_node (file, "subblocks", BLOCK_SUBBLOCKS (node), indent + 4);
|
||
print_node (file, "chain", BLOCK_CHAIN (node), indent + 4);
|
||
print_node (file, "abstract_origin",
|
||
BLOCK_ABSTRACT_ORIGIN (node), indent + 4);
|
||
return;
|
||
|
||
case 'e':
|
||
case '<':
|
||
case '1':
|
||
case '2':
|
||
case 'r':
|
||
case 's':
|
||
switch (TREE_CODE (node))
|
||
{
|
||
case BIND_EXPR:
|
||
print_node (file, "vars", TREE_OPERAND (node, 0), indent + 4);
|
||
print_node (file, "body", TREE_OPERAND (node, 1), indent + 4);
|
||
print_node (file, "block", TREE_OPERAND (node, 2), indent + 4);
|
||
return;
|
||
}
|
||
|
||
first_rtl = len = tree_code_length[(int) TREE_CODE (node)];
|
||
/* These kinds of nodes contain rtx's, not trees,
|
||
after a certain point. Print the rtx's as rtx's. */
|
||
switch (TREE_CODE (node))
|
||
{
|
||
case SAVE_EXPR:
|
||
first_rtl = 2;
|
||
break;
|
||
case CALL_EXPR:
|
||
first_rtl = 2;
|
||
break;
|
||
case METHOD_CALL_EXPR:
|
||
first_rtl = 3;
|
||
break;
|
||
case WITH_CLEANUP_EXPR:
|
||
/* Should be defined to be 2. */
|
||
first_rtl = 1;
|
||
break;
|
||
case RTL_EXPR:
|
||
first_rtl = 0;
|
||
}
|
||
for (i = 0; i < len; i++)
|
||
{
|
||
if (i >= first_rtl)
|
||
{
|
||
indent_to (file, indent + 4);
|
||
fprintf (file, "rtl %d ", i);
|
||
if (TREE_OPERAND (node, i))
|
||
print_rtl (file, TREE_OPERAND (node, i));
|
||
else
|
||
fprintf (file, "(nil)");
|
||
fprintf (file, "\n");
|
||
}
|
||
else
|
||
{
|
||
char temp[10];
|
||
|
||
sprintf (temp, "arg %d", i);
|
||
print_node (file, temp, TREE_OPERAND (node, i), indent + 4);
|
||
}
|
||
}
|
||
break;
|
||
|
||
case 'c':
|
||
case 'x':
|
||
switch (TREE_CODE (node))
|
||
{
|
||
case INTEGER_CST:
|
||
if (TREE_INT_CST_HIGH (node) == 0)
|
||
fprintf (file, " %1u", TREE_INT_CST_LOW (node));
|
||
else if (TREE_INT_CST_HIGH (node) == -1
|
||
&& TREE_INT_CST_LOW (node) != 0)
|
||
fprintf (file, " -%1u", -TREE_INT_CST_LOW (node));
|
||
else
|
||
fprintf (file,
|
||
#if HOST_BITS_PER_WIDE_INT == 64
|
||
#if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
|
||
" 0x%lx%016lx",
|
||
#else
|
||
" 0x%x%016x",
|
||
#endif
|
||
#else
|
||
#if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
|
||
" 0x%lx%08lx",
|
||
#else
|
||
" 0x%x%08x",
|
||
#endif
|
||
#endif
|
||
TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
|
||
break;
|
||
|
||
case REAL_CST:
|
||
#ifndef REAL_IS_NOT_DOUBLE
|
||
fprintf (file, " %e", TREE_REAL_CST (node));
|
||
#else
|
||
{
|
||
char *p = (char *) &TREE_REAL_CST (node);
|
||
fprintf (file, " 0x");
|
||
for (i = 0; i < sizeof TREE_REAL_CST (node); i++)
|
||
fprintf (file, "%02x", *p++);
|
||
fprintf (file, "");
|
||
}
|
||
#endif /* REAL_IS_NOT_DOUBLE */
|
||
break;
|
||
|
||
case COMPLEX_CST:
|
||
print_node (file, "real", TREE_REALPART (node), indent + 4);
|
||
print_node (file, "imag", TREE_IMAGPART (node), indent + 4);
|
||
break;
|
||
|
||
case STRING_CST:
|
||
fprintf (file, " \"%s\"", TREE_STRING_POINTER (node));
|
||
break;
|
||
|
||
case IDENTIFIER_NODE:
|
||
print_lang_identifier (file, node, indent);
|
||
break;
|
||
|
||
case TREE_LIST:
|
||
print_node (file, "purpose", TREE_PURPOSE (node), indent + 4);
|
||
print_node (file, "value", TREE_VALUE (node), indent + 4);
|
||
print_node (file, "chain", TREE_CHAIN (node), indent + 4);
|
||
break;
|
||
|
||
case TREE_VEC:
|
||
len = TREE_VEC_LENGTH (node);
|
||
for (i = 0; i < len; i++)
|
||
if (TREE_VEC_ELT (node, i))
|
||
{
|
||
char temp[10];
|
||
sprintf (temp, "elt %d", i);
|
||
indent_to (file, indent + 4);
|
||
print_node_brief (file, temp, TREE_VEC_ELT (node, i), 0);
|
||
}
|
||
break;
|
||
|
||
case OP_IDENTIFIER:
|
||
print_node (file, "op1", TREE_PURPOSE (node), indent + 4);
|
||
print_node (file, "op2", TREE_VALUE (node), indent + 4);
|
||
}
|
||
|
||
break;
|
||
}
|
||
|
||
fprintf (file, ">");
|
||
}
|