329 lines
7.4 KiB
C
329 lines
7.4 KiB
C
/* 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);
|
|
}
|
|
}
|