freebsd-dev/contrib/gcc/print-rtl.c

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/* Print RTL for GCC.
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Copyright (C) 1987, 1988, 1992, 1997, 1998, 1999, 2000, 2002, 2003,
2004, 2005
Free Software Foundation, Inc.
This file is part of GCC.
GCC 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.
GCC 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 GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
/* This file is compiled twice: once for the generator programs,
once for the compiler. */
#ifdef GENERATOR_FILE
#include "bconfig.h"
#else
#include "config.h"
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#endif
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#include "system.h"
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#include "coretypes.h"
#include "tm.h"
#include "rtl.h"
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/* These headers all define things which are not available in
generator programs. */
#ifndef GENERATOR_FILE
#include "tree.h"
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#include "real.h"
#include "flags.h"
#include "hard-reg-set.h"
#include "basic-block.h"
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#endif
static FILE *outfile;
static int sawclose = 0;
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static int indent;
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static void print_rtx (rtx);
/* String printed at beginning of each RTL when it is dumped.
This string is set to ASM_COMMENT_START when the RTL is dumped in
the assembly output file. */
const char *print_rtx_head = "";
/* Nonzero means suppress output of instruction numbers and line number
notes in debugging dumps.
This must be defined here so that programs like gencodes can be linked. */
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int flag_dump_unnumbered = 0;
/* Nonzero means use simplified format without flags, modes, etc. */
int flag_simple = 0;
/* Nonzero if we are dumping graphical description. */
int dump_for_graph;
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#ifndef GENERATOR_FILE
static void
print_decl_name (FILE *outfile, tree node)
{
if (DECL_NAME (node))
fputs (IDENTIFIER_POINTER (DECL_NAME (node)), outfile);
else
{
if (TREE_CODE (node) == LABEL_DECL && LABEL_DECL_UID (node) != -1)
fprintf (outfile, "L." HOST_WIDE_INT_PRINT_DEC, LABEL_DECL_UID (node));
else
{
char c = TREE_CODE (node) == CONST_DECL ? 'C' : 'D';
fprintf (outfile, "%c.%u", c, DECL_UID (node));
}
}
}
void
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print_mem_expr (FILE *outfile, tree expr)
{
if (TREE_CODE (expr) == COMPONENT_REF)
{
if (TREE_OPERAND (expr, 0))
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print_mem_expr (outfile, TREE_OPERAND (expr, 0));
else
fputs (" <variable>", outfile);
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fputc ('.', outfile);
print_decl_name (outfile, TREE_OPERAND (expr, 1));
}
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else if (TREE_CODE (expr) == INDIRECT_REF)
{
fputs (" (*", outfile);
print_mem_expr (outfile, TREE_OPERAND (expr, 0));
fputs (")", outfile);
}
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else if (TREE_CODE (expr) == ALIGN_INDIRECT_REF)
{
fputs (" (A*", outfile);
print_mem_expr (outfile, TREE_OPERAND (expr, 0));
fputs (")", outfile);
}
else if (TREE_CODE (expr) == MISALIGNED_INDIRECT_REF)
{
fputs (" (M*", outfile);
print_mem_expr (outfile, TREE_OPERAND (expr, 0));
fputs (")", outfile);
}
else if (TREE_CODE (expr) == RESULT_DECL)
fputs (" <result>", outfile);
else
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{
fputc (' ', outfile);
print_decl_name (outfile, expr);
}
}
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#endif
/* Print IN_RTX onto OUTFILE. This is the recursive part of printing. */
static void
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print_rtx (rtx in_rtx)
{
int i = 0;
int j;
const char *format_ptr;
int is_insn;
if (sawclose)
{
if (flag_simple)
fputc (' ', outfile);
else
fprintf (outfile, "\n%s%*s", print_rtx_head, indent * 2, "");
sawclose = 0;
}
if (in_rtx == 0)
{
fputs ("(nil)", outfile);
sawclose = 1;
return;
}
else if (GET_CODE (in_rtx) > NUM_RTX_CODE)
{
fprintf (outfile, "(??? bad code %d\n)", GET_CODE (in_rtx));
sawclose = 1;
return;
}
is_insn = INSN_P (in_rtx);
/* When printing in VCG format we write INSNs, NOTE, LABEL, and BARRIER
in separate nodes and therefore have to handle them special here. */
if (dump_for_graph
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&& (is_insn || NOTE_P (in_rtx)
|| LABEL_P (in_rtx) || BARRIER_P (in_rtx)))
{
i = 3;
indent = 0;
}
else
{
/* Print name of expression code. */
if (flag_simple && GET_CODE (in_rtx) == CONST_INT)
fputc ('(', outfile);
else
fprintf (outfile, "(%s", GET_RTX_NAME (GET_CODE (in_rtx)));
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if (! flag_simple)
{
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if (RTX_FLAG (in_rtx, in_struct))
fputs ("/s", outfile);
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if (RTX_FLAG (in_rtx, volatil))
fputs ("/v", outfile);
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if (RTX_FLAG (in_rtx, unchanging))
fputs ("/u", outfile);
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if (RTX_FLAG (in_rtx, frame_related))
fputs ("/f", outfile);
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if (RTX_FLAG (in_rtx, jump))
fputs ("/j", outfile);
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if (RTX_FLAG (in_rtx, call))
fputs ("/c", outfile);
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if (RTX_FLAG (in_rtx, return_val))
fputs ("/i", outfile);
/* 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)));
/* For other rtl, print the mode if it's not VOID. */
else if (GET_MODE (in_rtx) != VOIDmode)
fprintf (outfile, ":%s", GET_MODE_NAME (GET_MODE (in_rtx)));
}
}
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#ifndef GENERATOR_FILE
if (GET_CODE (in_rtx) == CONST_DOUBLE && FLOAT_MODE_P (GET_MODE (in_rtx)))
i = 5;
#endif
/* Get the format string and skip the first elements if we have handled
them already. */
format_ptr = GET_RTX_FORMAT (GET_CODE (in_rtx)) + i;
for (; i < GET_RTX_LENGTH (GET_CODE (in_rtx)); i++)
switch (*format_ptr++)
{
const char *str;
case 'T':
str = XTMPL (in_rtx, i);
goto string;
case 'S':
case 's':
str = XSTR (in_rtx, i);
string:
if (str == 0)
fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
else
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{
if (dump_for_graph)
fprintf (outfile, " (\\\"%s\\\")", str);
else
fprintf (outfile, " (\"%s\")", str);
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}
sawclose = 1;
break;
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/* 0 indicates a field for internal use that should not be printed.
An exception is the third field of a NOTE, where it indicates
that the field has several different valid contents. */
case '0':
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if (i == 1 && REG_P (in_rtx))
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{
if (REGNO (in_rtx) != ORIGINAL_REGNO (in_rtx))
fprintf (outfile, " [%d]", ORIGINAL_REGNO (in_rtx));
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}
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#ifndef GENERATOR_FILE
else if (i == 1 && GET_CODE (in_rtx) == SYMBOL_REF)
{
int flags = SYMBOL_REF_FLAGS (in_rtx);
if (flags)
fprintf (outfile, " [flags 0x%x]", flags);
}
else if (i == 2 && GET_CODE (in_rtx) == SYMBOL_REF)
{
tree decl = SYMBOL_REF_DECL (in_rtx);
if (decl)
print_node_brief (outfile, "", decl, 0);
}
#endif
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else if (i == 4 && NOTE_P (in_rtx))
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{
switch (NOTE_LINE_NUMBER (in_rtx))
{
case NOTE_INSN_EH_REGION_BEG:
case NOTE_INSN_EH_REGION_END:
if (flag_dump_unnumbered)
fprintf (outfile, " #");
else
fprintf (outfile, " %d", NOTE_EH_HANDLER (in_rtx));
sawclose = 1;
break;
case NOTE_INSN_BLOCK_BEG:
case NOTE_INSN_BLOCK_END:
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#ifndef GENERATOR_FILE
dump_addr (outfile, " ", NOTE_BLOCK (in_rtx));
#endif
sawclose = 1;
break;
case NOTE_INSN_BASIC_BLOCK:
{
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#ifndef GENERATOR_FILE
basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
if (bb != 0)
fprintf (outfile, " [bb %d]", bb->index);
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#endif
break;
}
case NOTE_INSN_EXPECTED_VALUE:
indent += 2;
if (!sawclose)
fprintf (outfile, " ");
print_rtx (NOTE_EXPECTED_VALUE (in_rtx));
indent -= 2;
break;
case NOTE_INSN_DELETED_LABEL:
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{
const char *label = NOTE_DELETED_LABEL_NAME (in_rtx);
if (label)
fprintf (outfile, " (\"%s\")", label);
else
fprintf (outfile, " \"\"");
}
break;
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case NOTE_INSN_SWITCH_TEXT_SECTIONS:
{
#ifndef GENERATOR_FILE
basic_block bb = NOTE_BASIC_BLOCK (in_rtx);
if (bb != 0)
fprintf (outfile, " [bb %d]", bb->index);
#endif
break;
}
case NOTE_INSN_VAR_LOCATION:
#ifndef GENERATOR_FILE
fprintf (outfile, " (");
print_mem_expr (outfile, NOTE_VAR_LOCATION_DECL (in_rtx));
fprintf (outfile, " ");
print_rtx (NOTE_VAR_LOCATION_LOC (in_rtx));
fprintf (outfile, ")");
#endif
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break;
default:
{
const char * const str = X0STR (in_rtx, i);
if (NOTE_LINE_NUMBER (in_rtx) < 0)
;
else if (str == 0)
fputs (dump_for_graph ? " \\\"\\\"" : " \"\"", outfile);
else
{
if (dump_for_graph)
fprintf (outfile, " (\\\"%s\\\")", str);
else
fprintf (outfile, " (\"%s\")", str);
}
break;
}
}
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}
break;
case 'e':
do_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%*s",
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print_rtx_head, indent * 2, "");
sawclose = 0;
}
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fputs (" [", 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%*s", print_rtx_head, indent * 2, "");
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fputs ("]", outfile);
sawclose = 1;
indent -= 2;
break;
case 'w':
if (! flag_simple)
fprintf (outfile, " ");
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fprintf (outfile, HOST_WIDE_INT_PRINT_DEC, XWINT (in_rtx, i));
if (! flag_simple)
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fprintf (outfile, " [" HOST_WIDE_INT_PRINT_HEX "]",
XWINT (in_rtx, i));
break;
case 'i':
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if (i == 4 && INSN_P (in_rtx))
{
#ifndef GENERATOR_FILE
/* Pretty-print insn locators. Ignore scoping as it is mostly
redundant with line number information and do not print anything
when there is no location information available. */
if (INSN_LOCATOR (in_rtx) && insn_file (in_rtx))
fprintf(outfile, " %s:%i", insn_file (in_rtx), insn_line (in_rtx));
#endif
}
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else if (i == 6 && NOTE_P (in_rtx))
{
/* This field is only used for NOTE_INSN_DELETED_LABEL, and
other times often contains garbage from INSN->NOTE death. */
if (NOTE_LINE_NUMBER (in_rtx) == NOTE_INSN_DELETED_LABEL)
fprintf (outfile, " %d", XINT (in_rtx, i));
}
else
{
int value = XINT (in_rtx, i);
const char *name;
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#ifndef GENERATOR_FILE
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if (REG_P (in_rtx) && value < FIRST_PSEUDO_REGISTER)
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fprintf (outfile, " %d %s", REGNO (in_rtx),
reg_names[REGNO (in_rtx)]);
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else if (REG_P (in_rtx)
&& value <= LAST_VIRTUAL_REGISTER)
{
if (value == VIRTUAL_INCOMING_ARGS_REGNUM)
fprintf (outfile, " %d virtual-incoming-args", value);
else if (value == VIRTUAL_STACK_VARS_REGNUM)
fprintf (outfile, " %d virtual-stack-vars", value);
else if (value == VIRTUAL_STACK_DYNAMIC_REGNUM)
fprintf (outfile, " %d virtual-stack-dynamic", value);
else if (value == VIRTUAL_OUTGOING_ARGS_REGNUM)
fprintf (outfile, " %d virtual-outgoing-args", value);
else if (value == VIRTUAL_CFA_REGNUM)
fprintf (outfile, " %d virtual-cfa", value);
else
fprintf (outfile, " %d virtual-reg-%d", value,
value-FIRST_VIRTUAL_REGISTER);
}
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else
#endif
if (flag_dump_unnumbered
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&& (is_insn || NOTE_P (in_rtx)))
fputc ('#', outfile);
else
fprintf (outfile, " %d", value);
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#ifndef GENERATOR_FILE
if (REG_P (in_rtx) && REG_ATTRS (in_rtx))
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{
fputs (" [", outfile);
if (ORIGINAL_REGNO (in_rtx) != REGNO (in_rtx))
fprintf (outfile, "orig:%i", ORIGINAL_REGNO (in_rtx));
if (REG_EXPR (in_rtx))
print_mem_expr (outfile, REG_EXPR (in_rtx));
if (REG_OFFSET (in_rtx))
fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
REG_OFFSET (in_rtx));
fputs (" ]", outfile);
}
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#endif
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if (is_insn && &INSN_CODE (in_rtx) == &XINT (in_rtx, i)
&& XINT (in_rtx, i) >= 0
&& (name = get_insn_name (XINT (in_rtx, i))) != NULL)
fprintf (outfile, " {%s}", name);
sawclose = 0;
}
break;
/* Print NOTE_INSN names rather than integer codes. */
case 'n':
if (XINT (in_rtx, i) >= (int) NOTE_INSN_BIAS
&& XINT (in_rtx, i) < (int) NOTE_INSN_MAX)
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)
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{
rtx sub = XEXP (in_rtx, i);
enum rtx_code subc = GET_CODE (sub);
if (GET_CODE (in_rtx) == LABEL_REF)
{
if (subc == NOTE
&& NOTE_LINE_NUMBER (sub) == NOTE_INSN_DELETED_LABEL)
{
if (flag_dump_unnumbered)
fprintf (outfile, " [# deleted]");
else
fprintf (outfile, " [%d deleted]", INSN_UID (sub));
sawclose = 0;
break;
}
if (subc != CODE_LABEL)
goto do_e;
}
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if (flag_dump_unnumbered)
fputs (" #", outfile);
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else
fprintf (outfile, " %d", INSN_UID (sub));
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}
else
fputs (" 0", outfile);
sawclose = 0;
break;
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case 'b':
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#ifndef GENERATOR_FILE
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if (XBITMAP (in_rtx, i) == NULL)
fputs (" {null}", outfile);
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else
bitmap_print (outfile, XBITMAP (in_rtx, i), " {", "}");
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#endif
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sawclose = 0;
break;
case 't':
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#ifndef GENERATOR_FILE
dump_addr (outfile, " ", XTREE (in_rtx, i));
#endif
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break;
case '*':
fputs (" Unknown", outfile);
sawclose = 0;
break;
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case 'B':
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#ifndef GENERATOR_FILE
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if (XBBDEF (in_rtx, i))
fprintf (outfile, " %i", XBBDEF (in_rtx, i)->index);
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#endif
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break;
default:
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gcc_unreachable ();
}
switch (GET_CODE (in_rtx))
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{
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#ifndef GENERATOR_FILE
case MEM:
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fprintf (outfile, " [" HOST_WIDE_INT_PRINT_DEC, MEM_ALIAS_SET (in_rtx));
if (MEM_EXPR (in_rtx))
print_mem_expr (outfile, MEM_EXPR (in_rtx));
if (MEM_OFFSET (in_rtx))
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fprintf (outfile, "+" HOST_WIDE_INT_PRINT_DEC,
INTVAL (MEM_OFFSET (in_rtx)));
if (MEM_SIZE (in_rtx))
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fprintf (outfile, " S" HOST_WIDE_INT_PRINT_DEC,
INTVAL (MEM_SIZE (in_rtx)));
if (MEM_ALIGN (in_rtx) != 1)
fprintf (outfile, " A%u", MEM_ALIGN (in_rtx));
fputc (']', outfile);
break;
case CONST_DOUBLE:
if (FLOAT_MODE_P (GET_MODE (in_rtx)))
{
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char s[60];
real_to_decimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
sizeof (s), 0, 1);
fprintf (outfile, " %s", s);
real_to_hexadecimal (s, CONST_DOUBLE_REAL_VALUE (in_rtx),
sizeof (s), 0, 1);
fprintf (outfile, " [%s]", s);
}
break;
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#endif
case CODE_LABEL:
fprintf (outfile, " [%d uses]", LABEL_NUSES (in_rtx));
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switch (LABEL_KIND (in_rtx))
{
case LABEL_NORMAL: break;
case LABEL_STATIC_ENTRY: fputs (" [entry]", outfile); break;
case LABEL_GLOBAL_ENTRY: fputs (" [global entry]", outfile); break;
case LABEL_WEAK_ENTRY: fputs (" [weak entry]", outfile); break;
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default: gcc_unreachable ();
}
break;
default:
break;
}
if (dump_for_graph
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&& (is_insn || NOTE_P (in_rtx)
|| LABEL_P (in_rtx) || BARRIER_P (in_rtx)))
sawclose = 0;
else
{
fputc (')', outfile);
sawclose = 1;
}
}
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/* Print an rtx on the current line of FILE. Initially indent IND
characters. */
void
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print_inline_rtx (FILE *outf, rtx x, int ind)
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{
int oldsaw = sawclose;
int oldindent = indent;
sawclose = 0;
indent = ind;
outfile = outf;
print_rtx (x);
sawclose = oldsaw;
indent = oldindent;
}
/* Call this function from the debugger to see what X looks like. */
void
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debug_rtx (rtx x)
{
outfile = stderr;
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sawclose = 0;
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
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debug_rtx_list (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))
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{
debug_rtx (insn);
fprintf (stderr, "\n");
}
}
/* Call this function to print an rtx list from START to END inclusive. */
void
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debug_rtx_range (rtx start, rtx end)
{
while (1)
{
debug_rtx (start);
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fprintf (stderr, "\n");
if (!start || start == end)
break;
start = NEXT_INSN (start);
}
}
/* 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
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debug_rtx_find (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
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print_rtl (FILE *outf, rtx rtx_first)
{
rtx tmp_rtx;
outfile = outf;
sawclose = 0;
if (rtx_first == 0)
{
fputs (print_rtx_head, outf);
fputs ("(nil)\n", outf);
}
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; tmp_rtx != 0; tmp_rtx = NEXT_INSN (tmp_rtx))
if (! flag_dump_unnumbered
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|| !NOTE_P (tmp_rtx) || NOTE_LINE_NUMBER (tmp_rtx) < 0)
{
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fputs (print_rtx_head, outfile);
print_rtx (tmp_rtx);
fprintf (outfile, "\n");
}
break;
default:
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fputs (print_rtx_head, outfile);
print_rtx (rtx_first);
}
}
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/* Like print_rtx, except specify a file. */
/* Return nonzero if we actually printed anything. */
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int
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print_rtl_single (FILE *outf, rtx x)
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{
outfile = outf;
sawclose = 0;
if (! flag_dump_unnumbered
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|| !NOTE_P (x) || NOTE_LINE_NUMBER (x) < 0)
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{
fputs (print_rtx_head, outfile);
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print_rtx (x);
putc ('\n', outf);
return 1;
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}
return 0;
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}
/* Like print_rtl except without all the detail; for example,
if RTX is a CONST_INT then print in decimal format. */
void
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print_simple_rtl (FILE *outf, rtx x)
{
flag_simple = 1;
print_rtl (outf, x);
flag_simple = 0;
}