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freebsd/contrib/gcc/print-tree.c
David E. O'Brien f2c57ef828 Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00

697 lines
20 KiB
C
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/* Prints out tree in human readable form - GNU C-compiler
Copyright (C) 1990, 91, 93-97, 1998 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "config.h"
#include "system.h"
#include "tree.h"
extern char *mode_name[];
void print_node ();
void indent_to ();
/* Define the hash table of nodes already seen.
Such nodes are not repeated; brief cross-references are used. */
#define HASH_SIZE 37
struct bucket
{
tree node;
struct bucket *next;
};
static struct bucket **table;
/* Print the node NODE on standard error, for debugging.
Most nodes referred to by this one are printed recursively
down to a depth of six. */
void
debug_tree (node)
tree node;
{
char *object = (char *) oballoc (0);
table = (struct bucket **) oballoc (HASH_SIZE * sizeof (struct bucket *));
bzero ((char *) table, HASH_SIZE * sizeof (struct bucket *));
print_node (stderr, "", node, 0);
table = 0;
obfree (object);
fprintf (stderr, "\n");
}
/* Print a node in brief fashion, with just the code, address and name. */
void
print_node_brief (file, prefix, node, indent)
FILE *file;
const char *prefix;
tree node;
int indent;
{
char class;
if (node == 0)
return;
class = TREE_CODE_CLASS (TREE_CODE (node));
/* Always print the slot this node is in, and its code, address and
name if any. */
if (indent > 0)
fprintf (file, " ");
fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
fprintf (file, HOST_PTR_PRINTF, (char *) node);
if (class == 'd')
{
if (DECL_NAME (node))
fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
}
else if (class == 't')
{
if (TYPE_NAME (node))
{
if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
&& DECL_NAME (TYPE_NAME (node)))
fprintf (file, " %s",
IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
}
}
if (TREE_CODE (node) == IDENTIFIER_NODE)
fprintf (file, " %s", IDENTIFIER_POINTER (node));
/* We might as well always print the value of an integer. */
if (TREE_CODE (node) == INTEGER_CST)
{
if (TREE_CONSTANT_OVERFLOW (node))
fprintf (file, " overflow");
fprintf (file, " ");
if (TREE_INT_CST_HIGH (node) == 0)
fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED, TREE_INT_CST_LOW (node));
else if (TREE_INT_CST_HIGH (node) == -1
&& TREE_INT_CST_LOW (node) != 0)
{
fprintf (file, "-");
fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
-TREE_INT_CST_LOW (node));
}
else
fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
}
if (TREE_CODE (node) == REAL_CST)
{
REAL_VALUE_TYPE d;
if (TREE_OVERFLOW (node))
fprintf (file, " overflow");
#if !defined(REAL_IS_NOT_DOUBLE) || defined(REAL_ARITHMETIC)
d = TREE_REAL_CST (node);
if (REAL_VALUE_ISINF (d))
fprintf (file, " Inf");
else if (REAL_VALUE_ISNAN (d))
fprintf (file, " Nan");
else
{
char string[100];
REAL_VALUE_TO_DECIMAL (d, "%e", string);
fprintf (file, " %s", string);
}
#else
{
int i;
unsigned char *p = (unsigned 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
}
fprintf (file, ">");
}
void
indent_to (file, column)
FILE *file;
int column;
{
int i;
/* Since this is the long way, indent to desired column. */
if (column > 0)
fprintf (file, "\n");
for (i = 0; i < column; i++)
fprintf (file, " ");
}
/* Print the node NODE in full on file FILE, preceded by PREFIX,
starting in column INDENT. */
void
print_node (file, prefix, node, indent)
FILE *file;
const char *prefix;
tree node;
int indent;
{
int hash;
struct bucket *b;
enum machine_mode mode;
char class;
int len;
int first_rtl;
int i;
if (node == 0)
return;
class = TREE_CODE_CLASS (TREE_CODE (node));
/* Don't get too deep in nesting. If the user wants to see deeper,
it is easy to use the address of a lowest-level node
as an argument in another call to debug_tree. */
if (indent > 24)
{
print_node_brief (file, prefix, node, indent);
return;
}
if (indent > 8 && (class == 't' || class == 'd'))
{
print_node_brief (file, prefix, node, indent);
return;
}
/* It is unsafe to look at any other filds of an ERROR_MARK node. */
if (TREE_CODE (node) == ERROR_MARK)
{
print_node_brief (file, prefix, node, indent);
return;
}
hash = ((unsigned long) node) % HASH_SIZE;
/* If node is in the table, just mention its address. */
for (b = table[hash]; b; b = b->next)
if (b->node == node)
{
print_node_brief (file, prefix, node, indent);
return;
}
/* Add this node to the table. */
b = (struct bucket *) oballoc (sizeof (struct bucket));
b->node = node;
b->next = table[hash];
table[hash] = b;
/* Indent to the specified column, since this is the long form. */
indent_to (file, indent);
/* Print the slot this node is in, and its code, and address. */
fprintf (file, "%s <%s ", prefix, tree_code_name[(int) TREE_CODE (node)]);
fprintf (file, HOST_PTR_PRINTF, (char *) node);
/* Print the name, if any. */
if (class == 'd')
{
if (DECL_NAME (node))
fprintf (file, " %s", IDENTIFIER_POINTER (DECL_NAME (node)));
}
else if (class == 't')
{
if (TYPE_NAME (node))
{
if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
fprintf (file, " %s", IDENTIFIER_POINTER (TYPE_NAME (node)));
else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
&& DECL_NAME (TYPE_NAME (node)))
fprintf (file, " %s",
IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node))));
}
}
if (TREE_CODE (node) == IDENTIFIER_NODE)
fprintf (file, " %s", IDENTIFIER_POINTER (node));
if (TREE_CODE (node) == INTEGER_CST)
{
if (indent <= 4)
print_node_brief (file, "type", TREE_TYPE (node), indent + 4);
}
else
{
print_node (file, "type", TREE_TYPE (node), indent + 4);
if (TREE_TYPE (node))
indent_to (file, indent + 3);
print_obstack_name ((char *) node, file, "");
indent_to (file, indent + 3);
}
/* If a permanent object is in the wrong obstack, or the reverse, warn. */
if (object_permanent_p (node) != TREE_PERMANENT (node))
{
if (TREE_PERMANENT (node))
fputs (" !!permanent object in non-permanent obstack!!", file);
else
fputs (" !!non-permanent object in permanent obstack!!", file);
indent_to (file, indent + 3);
}
if (TREE_SIDE_EFFECTS (node))
fputs (" side-effects", file);
if (TREE_READONLY (node))
fputs (" readonly", file);
if (TREE_CONSTANT (node))
fputs (" constant", file);
if (TREE_ADDRESSABLE (node))
fputs (" addressable", file);
if (TREE_THIS_VOLATILE (node))
fputs (" volatile", file);
if (TREE_UNSIGNED (node))
fputs (" unsigned", file);
if (TREE_ASM_WRITTEN (node))
fputs (" asm_written", file);
if (TREE_USED (node))
fputs (" used", file);
if (TREE_RAISES (node))
fputs (" raises", file);
if (TREE_PERMANENT (node))
fputs (" permanent", file);
if (TREE_PUBLIC (node))
fputs (" public", file);
if (TREE_STATIC (node))
fputs (" static", file);
if (TREE_LANG_FLAG_0 (node))
fputs (" tree_0", file);
if (TREE_LANG_FLAG_1 (node))
fputs (" tree_1", file);
if (TREE_LANG_FLAG_2 (node))
fputs (" tree_2", file);
if (TREE_LANG_FLAG_3 (node))
fputs (" tree_3", file);
if (TREE_LANG_FLAG_4 (node))
fputs (" tree_4", file);
if (TREE_LANG_FLAG_5 (node))
fputs (" tree_5", file);
if (TREE_LANG_FLAG_6 (node))
fputs (" tree_6", file);
/* DECL_ nodes have additional attributes. */
switch (TREE_CODE_CLASS (TREE_CODE (node)))
{
case 'd':
mode = DECL_MODE (node);
if (DECL_IGNORED_P (node))
fputs (" ignored", file);
if (DECL_ABSTRACT (node))
fputs (" abstract", file);
if (DECL_IN_SYSTEM_HEADER (node))
fputs (" in_system_header", file);
if (DECL_COMMON (node))
fputs (" common", file);
if (DECL_EXTERNAL (node))
fputs (" external", file);
if (DECL_REGISTER (node))
fputs (" regdecl", file);
if (DECL_PACKED (node))
fputs (" packed", file);
if (DECL_NONLOCAL (node))
fputs (" nonlocal", file);
if (DECL_INLINE (node))
fputs (" inline", file);
if (TREE_CODE (node) == TYPE_DECL && TYPE_DECL_SUPPRESS_DEBUG (node))
fputs (" suppress-debug", file);
if (TREE_CODE (node) == FUNCTION_DECL && DECL_BUILT_IN (node))
fputs (" built-in", file);
if (TREE_CODE (node) == FUNCTION_DECL && DECL_BUILT_IN_NONANSI (node))
fputs (" built-in-nonansi", file);
if (TREE_CODE (node) == FIELD_DECL && DECL_BIT_FIELD (node))
fputs (" bit-field", file);
if (TREE_CODE (node) == LABEL_DECL && DECL_TOO_LATE (node))
fputs (" too-late", file);
if (TREE_CODE (node) == VAR_DECL && DECL_IN_TEXT_SECTION (node))
fputs (" in-text-section", file);
if (DECL_VIRTUAL_P (node))
fputs (" virtual", file);
if (DECL_DEFER_OUTPUT (node))
fputs (" defer-output", file);
if (DECL_TRANSPARENT_UNION (node))
fputs (" transparent-union", file);
if (DECL_LANG_FLAG_0 (node))
fputs (" decl_0", file);
if (DECL_LANG_FLAG_1 (node))
fputs (" decl_1", file);
if (DECL_LANG_FLAG_2 (node))
fputs (" decl_2", file);
if (DECL_LANG_FLAG_3 (node))
fputs (" decl_3", file);
if (DECL_LANG_FLAG_4 (node))
fputs (" decl_4", file);
if (DECL_LANG_FLAG_5 (node))
fputs (" decl_5", file);
if (DECL_LANG_FLAG_6 (node))
fputs (" decl_6", file);
if (DECL_LANG_FLAG_7 (node))
fputs (" decl_7", file);
fprintf (file, " %s", mode_name[(int) mode]);
fprintf (file, " file %s line %d",
DECL_SOURCE_FILE (node), DECL_SOURCE_LINE (node));
print_node (file, "size", DECL_SIZE (node), indent + 4);
indent_to (file, indent + 3);
if (TREE_CODE (node) != FUNCTION_DECL)
fprintf (file, " align %d", DECL_ALIGN (node));
else if (DECL_INLINE (node))
fprintf (file, " frame_size %d", DECL_FRAME_SIZE (node));
else if (DECL_BUILT_IN (node))
fprintf (file, " built-in code %d", DECL_FUNCTION_CODE (node));
if (TREE_CODE (node) == FIELD_DECL)
print_node (file, "bitpos", DECL_FIELD_BITPOS (node), indent + 4);
if (DECL_POINTER_ALIAS_SET_KNOWN_P (node))
fprintf (file, " alias set %d", DECL_POINTER_ALIAS_SET (node));
print_node_brief (file, "context", DECL_CONTEXT (node), indent + 4);
print_node_brief (file, "machine_attributes", DECL_MACHINE_ATTRIBUTES (node), indent + 4);
print_node_brief (file, "abstract_origin",
DECL_ABSTRACT_ORIGIN (node), indent + 4);
print_node (file, "arguments", DECL_ARGUMENTS (node), indent + 4);
print_node (file, "result", DECL_RESULT (node), indent + 4);
print_node_brief (file, "initial", DECL_INITIAL (node), indent + 4);
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 ");
print_rtl (file, DECL_INCOMING_RTL (node));
}
else if (TREE_CODE (node) == FUNCTION_DECL)
{
fprintf (file, "saved-insns ");
fprintf (file, HOST_PTR_PRINTF,
(char *) 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_STRING_FLAG (node))
fputs (" string-flag", file);
if (TYPE_NEEDS_CONSTRUCTING (node))
fputs (" needs-constructing", file);
if (TYPE_TRANSPARENT_UNION (node))
fputs (" transparent-union", file);
if (TYPE_PACKED (node))
fputs (" packed", 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));
fprintf (file, " alias set %d", TYPE_ALIAS_SET (node));
print_node (file, "attributes", TYPE_ATTRIBUTES (node), indent + 4);
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
|| TREE_CODE (node) == QUAL_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);
break;
case 'e':
case '<':
case '1':
case '2':
case 'r':
case 's':
if (TREE_CODE (node) == 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);
break;
}
len = tree_code_length[(int) TREE_CODE (node)];
/* Some nodes contain rtx's, not trees,
after a certain point. Print the rtx's as rtx's. */
first_rtl = first_rtl_op (TREE_CODE (node));
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, (struct rtx_def *) 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);
}
}
if (TREE_CODE (node) == EXPR_WITH_FILE_LOCATION)
{
indent_to (file, indent+4);
fprintf (file, "%s:%d:%d",
(EXPR_WFL_FILENAME_NODE (node ) ?
EXPR_WFL_FILENAME (node) : "(no file info)"),
EXPR_WFL_LINENO (node), EXPR_WFL_COLNO (node));
}
break;
case 'c':
case 'x':
switch (TREE_CODE (node))
{
case INTEGER_CST:
if (TREE_CONSTANT_OVERFLOW (node))
fprintf (file, " overflow");
fprintf (file, " ");
if (TREE_INT_CST_HIGH (node) == 0)
fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
TREE_INT_CST_LOW (node));
else if (TREE_INT_CST_HIGH (node) == -1
&& TREE_INT_CST_LOW (node) != 0)
{
fprintf (file, "-");
fprintf (file, HOST_WIDE_INT_PRINT_UNSIGNED,
-TREE_INT_CST_LOW (node));
}
else
fprintf (file, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));
break;
case REAL_CST:
{
REAL_VALUE_TYPE d;
if (TREE_OVERFLOW (node))
fprintf (file, " overflow");
#if !defined(REAL_IS_NOT_DOUBLE) || defined(REAL_ARITHMETIC)
d = TREE_REAL_CST (node);
if (REAL_VALUE_ISINF (d))
fprintf (file, " Inf");
else if (REAL_VALUE_ISNAN (d))
fprintf (file, " Nan");
else
{
char string[100];
REAL_VALUE_TO_DECIMAL (d, "%e", string);
fprintf (file, " %s", string);
}
#else
{
int i;
unsigned char *p = (unsigned 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
}
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));
/* Print the chain 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 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;
default:
if (TREE_CODE_CLASS (TREE_CODE (node)) == 'x')
lang_print_xnode (file, node, indent);
break;
}
break;
}
fprintf (file, ">");
}
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