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/* Print RTL for GNU C Compiler.
Copyright (C) 1987, 1988, 1992 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "config.h"
#include <ctype.h>
#include <stdio.h>
#include "rtl.h"
/* How to print out a register name.
We don't use PRINT_REG because some definitions of PRINT_REG
don't work here. */
#ifndef DEBUG_PRINT_REG
#define DEBUG_PRINT_REG(RTX, CODE, FILE) \
fprintf ((FILE), "%d %s", REGNO (RTX), reg_names[REGNO (RTX)])
#endif
/* Array containing all of the register names */
#ifdef DEBUG_REGISTER_NAMES
static char *reg_names[] = DEBUG_REGISTER_NAMES;
#else
static char *reg_names[] = REGISTER_NAMES;
#endif
static FILE *outfile;
char spaces[] = " ";
static int sawclose = 0;
/* Names for patterns. Non-zero only when linked with insn-output.c. */
extern char **insn_name_ptr;
/* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
static void
print_rtx (in_rtx)
register rtx in_rtx;
{
static int indent;
register int i, j;
register char *format_ptr;
register int is_insn;
if (sawclose)
{
fprintf (outfile, "\n%s",
(spaces + (sizeof spaces - 1 - indent * 2)));
sawclose = 0;
}
if (in_rtx == 0)
{
fprintf (outfile, "(nil)");
sawclose = 1;
return;
}
/* print name of expression code */
fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
if (in_rtx->in_struct)
fprintf (outfile, "/s");
if (in_rtx->volatil)
fprintf (outfile, "/v");
if (in_rtx->unchanging)
fprintf (outfile, "/u");
if (in_rtx->integrated)
fprintf (outfile, "/i");
if (GET_MODE (in_rtx) != VOIDmode)
{
/* Print REG_NOTE names for EXPR_LIST and INSN_LIST. */
if (GET_CODE (in_rtx) == EXPR_LIST || GET_CODE (in_rtx) == INSN_LIST)
fprintf (outfile, ":%s", GET_REG_NOTE_NAME (GET_MODE (in_rtx)));
else
fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
}
is_insn = (GET_RTX_CLASS (GET_CODE (in_rtx)) == 'i');
format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx));
for (i = 0; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
switch (*format_ptr++)
{
case 'S':
case 's':
if (XSTR (in_rtx, i) == 0)
fprintf (outfile, " \"\"");
else
fprintf (outfile, " (\"%s\")", XSTR (in_rtx, i));
sawclose = 1;
break;
/* 0 indicates a field for internal use that should not be printed. */
case '0':
break;
case 'e':
indent += 2;
if (!sawclose)
fprintf (outfile, " ");
print_rtx (XEXP (in_rtx, i));
indent -= 2;
break;
case 'E':
case 'V':
indent += 2;
if (sawclose)
{
fprintf (outfile, "\n%s",
(spaces + (sizeof spaces - 1 - indent * 2)));
sawclose = 0;
}
fprintf (outfile, "[ ");
if (NULL != XVEC (in_rtx, i))
{
indent += 2;
if (XVECLEN (in_rtx, i))
sawclose = 1;
for (j = 0; j < XVECLEN (in_rtx, i); j++)
print_rtx (XVECEXP (in_rtx, i, j));
indent -= 2;
}
if (sawclose)
fprintf (outfile, "\n%s",
(spaces + (sizeof spaces - 1 - indent * 2)));
fprintf (outfile, "] ");
sawclose = 1;
indent -= 2;
break;
case 'w':
fprintf (outfile,
#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
" %d",
#else
" %ld",
#endif
XWINT (in_rtx, i));
break;
case 'i':
{
register int value = XINT (in_rtx, i);
if (GET_CODE (in_rtx) == REG && value < FIRST_PSEUDO_REGISTER)
{
fputc (' ', outfile);
DEBUG_PRINT_REG (in_rtx, 0, outfile);
}
else
fprintf (outfile, " %d", value);
}
if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
&& insn_name_ptr
&& XINT (in_rtx, i) >= 0)
fprintf (outfile, " {%s}", insn_name_ptr[XINT (in_rtx, i)]);
sawclose = 0;
break;
/* Print NOTE_INSN names rather than integer codes. */
case 'n':
if (XINT (in_rtx, i) <= 0)
fprintf (outfile, " %s", GET_NOTE_INSN_NAME (XINT (in_rtx, i)));
else
fprintf (outfile, " %d", XINT (in_rtx, i));
sawclose = 0;
break;
case 'u':
if (XEXP (in_rtx, i) != NULL)
fprintf (outfile, " %d", INSN_UID (XEXP (in_rtx, i)));
else
fprintf (outfile, " 0");
sawclose = 0;
break;
case '*':
fprintf (outfile, " Unknown");
sawclose = 0;
break;
default:
fprintf (stderr,
"switch format wrong in rtl.print_rtx(). format was: %c.\n",
format_ptr[-1]);
abort ();
}
fprintf (outfile, ")");
sawclose = 1;
}
/* Call this function from the debugger to see what X looks like. */
void
debug_rtx (x)
rtx x;
{
outfile = stderr;
print_rtx (x);
fprintf (stderr, "\n");
}
/* Count of rtx's to print with debug_rtx_list.
This global exists because gdb user defined commands have no arguments. */
int debug_rtx_count = 0; /* 0 is treated as equivalent to 1 */
/* Call this function to print list from X on.
N is a count of the rtx's to print. Positive values print from the specified
rtx on. Negative values print a window around the rtx.
EG: -5 prints 2 rtx's on either side (in addition to the specified rtx). */
void
debug_rtx_list (x, n)
rtx x;
int n;
{
int i,count;
rtx insn;
count = n == 0 ? 1 : n < 0 ? -n : n;
/* If we are printing a window, back up to the start. */
if (n < 0)
for (i = count / 2; i > 0; i--)
{
if (PREV_INSN (x) == 0)
break;
x = PREV_INSN (x);
}
for (i = count, insn = x; i > 0 && insn != 0; i--, insn = NEXT_INSN (insn))
debug_rtx (insn);
}
/* Call this function to search an rtx list to find one with insn uid UID,
and then call debug_rtx_list to print it, using DEBUG_RTX_COUNT.
The found insn is returned to enable further debugging analysis. */
rtx
debug_rtx_find(x, uid)
rtx x;
int uid;
{
while (x != 0 && INSN_UID (x) != uid)
x = NEXT_INSN (x);
if (x != 0)
{
debug_rtx_list (x, debug_rtx_count);
return x;
}
else
{
fprintf (stderr, "insn uid %d not found\n", uid);
return 0;
}
}
/* External entry point for printing a chain of insns
starting with RTX_FIRST onto file OUTF.
A blank line separates insns.
If RTX_FIRST is not an insn, then it alone is printed, with no newline. */
void
print_rtl (outf, rtx_first)
FILE *outf;
rtx rtx_first;
{
register rtx tmp_rtx;
outfile = outf;
sawclose = 0;
if (rtx_first == 0)
fprintf (outf, "(nil)\n");
else
switch (GET_CODE (rtx_first))
{
case INSN:
case JUMP_INSN:
case CALL_INSN:
case NOTE:
case CODE_LABEL:
case BARRIER:
for (tmp_rtx = rtx_first; NULL != tmp_rtx; tmp_rtx = NEXT_INSN (tmp_rtx))
{
print_rtx (tmp_rtx);
fprintf (outfile, "\n");
}
break;
default:
print_rtx (rtx_first);
}
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.