/* Generate code from machine description to extract operands from insn as rtl.
- Copyright (C) 1987, 1991, 1992, 1993, 1997, 1998,
- 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1992, 1993, 1997, 1998, 1999, 2000, 2003, 2004
+ Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-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.
+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.
-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.
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
-#include "hconfig.h"
+#include "bconfig.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "rtl.h"
-#include "obstack.h"
#include "errors.h"
#include "insn-config.h"
#include "gensupport.h"
-static struct obstack obstack;
-struct obstack *rtl_obstack = &obstack;
-
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
/* This structure contains all the information needed to describe one
- set of extractions methods. Each method may be used by more than
+ set of extractions methods. Each method may be used by more than
one pattern if the operands are in the same place.
The string for each operand describes that path to the operand and
static struct code_ptr *peepholes;
-static void gen_insn PARAMS ((rtx));
-static void walk_rtx PARAMS ((rtx, const char *));
-static void print_path PARAMS ((const char *));
-static void record_insn_name PARAMS ((int, const char *));
+static void gen_insn (rtx);
+static void walk_rtx (rtx, const char *);
+static void print_path (const char *);
+static void record_insn_name (int, const char *);
static void
-gen_insn (insn)
- rtx insn;
+gen_insn (rtx insn)
{
- register int i;
- register struct extraction *p;
- register struct code_ptr *link;
+ int i;
+ struct extraction *p;
+ struct code_ptr *link;
op_count = 0;
dup_count = 0;
else
for (i = XVECLEN (insn, 1) - 1; i >= 0; i--)
{
- char *path = (char *) alloca (2);
+ char path[2];
path[0] = 'a' + i;
path[1] = 0;
walk_rtx (XVECEXP (insn, 1, i), path);
}
- link = (struct code_ptr *) xmalloc (sizeof (struct code_ptr));
+ link = xmalloc (sizeof (struct code_ptr));
link->insn_code = insn_code_number;
/* See if we find something that already had this extraction method. */
/* Otherwise, make a new extraction method. */
- p = (struct extraction *) xmalloc (sizeof (struct extraction));
+ p = xmalloc (sizeof (struct extraction));
p->op_count = op_count;
p->dup_count = dup_count;
p->next = extractions;
}
\f
static void
-walk_rtx (x, path)
- rtx x;
- const char *path;
+walk_rtx (rtx x, const char *path)
{
- register RTX_CODE code;
- register int i;
- register int len;
- register const char *fmt;
+ RTX_CODE code;
+ int i;
+ int len;
+ const char *fmt;
int depth = strlen (path);
char *newpath;
break;
case MATCH_DUP:
- case MATCH_PAR_DUP:
duplocs[dup_count] = xstrdup (path);
dupnums[dup_count] = XINT (x, 0);
dup_count++;
break;
+ case MATCH_PAR_DUP:
case MATCH_OP_DUP:
duplocs[dup_count] = xstrdup (path);
dupnums[dup_count] = XINT (x, 0);
dup_count++;
-
- newpath = (char *) alloca (depth + 2);
+
+ newpath = xmalloc (depth + 2);
strcpy (newpath, path);
newpath[depth + 1] = 0;
-
+
for (i = XVECLEN (x, 1) - 1; i >= 0; i--)
{
- newpath[depth] = '0' + i;
+ newpath[depth] = (code == MATCH_OP_DUP ? '0' : 'a') + i;
walk_rtx (XVECEXP (x, 1, i), newpath);
}
+ free (newpath);
return;
-
+
case MATCH_OPERATOR:
oplocs[XINT (x, 0)] = xstrdup (path);
op_count = MAX (op_count, XINT (x, 0) + 1);
- newpath = (char *) alloca (depth + 2);
+ newpath = xmalloc (depth + 2);
strcpy (newpath, path);
newpath[depth + 1] = 0;
newpath[depth] = '0' + i;
walk_rtx (XVECEXP (x, 2, i), newpath);
}
+ free (newpath);
return;
case MATCH_PARALLEL:
oplocs[XINT (x, 0)] = xstrdup (path);
op_count = MAX (op_count, XINT (x, 0) + 1);
- newpath = (char *) alloca (depth + 2);
+ newpath = xmalloc (depth + 2);
strcpy (newpath, path);
newpath[depth + 1] = 0;
newpath[depth] = 'a' + i;
walk_rtx (XVECEXP (x, 2, i), newpath);
}
+ free (newpath);
return;
case ADDRESS:
break;
}
- newpath = (char *) alloca (depth + 2);
+ newpath = xmalloc (depth + 2);
strcpy (newpath, path);
newpath[depth + 1] = 0;
}
}
}
+ free (newpath);
}
/* Given a PATH, representing a path down the instruction's
evaluate to the rtx at that point. */
static void
-print_path (path)
- const char *path;
+print_path (const char *path)
{
- register int len = strlen (path);
- register int i;
+ int len = strlen (path);
+ int i;
if (len == 0)
{
/* We first write out the operations (XEXP or XVECEXP) in reverse
order, then write "insn", then the indices in forward order. */
- for (i = len - 1; i >=0 ; i--)
+ for (i = len - 1; i >= 0 ; i--)
{
if (ISLOWER(path[i]))
printf ("XVECEXP (");
else if (ISDIGIT(path[i]))
printf ("XEXP (");
else
- abort ();
+ gcc_unreachable ();
}
-
+
printf ("pat");
for (i = 0; i < len; i++)
else if (ISDIGIT(path[i]))
printf (", %d)", path[i] - '0');
else
- abort ();
+ gcc_unreachable ();
}
}
\f
-PTR
-xmalloc (size)
- size_t size;
-{
- register PTR val = (PTR) malloc (size);
-
- if (val == 0)
- fatal ("virtual memory exhausted");
- return val;
-}
-
-PTR
-xrealloc (old, size)
- PTR old;
- size_t size;
-{
- register PTR ptr;
- if (old)
- ptr = (PTR) realloc (old, size);
- else
- ptr = (PTR) malloc (size);
- if (!ptr)
- fatal ("virtual memory exhausted");
- return ptr;
-}
-
-char *
-xstrdup (input)
- const char *input;
-{
- register size_t len = strlen (input) + 1;
- register char *output = xmalloc (len);
- memcpy (output, input, len);
- return output;
-}
-\f
-extern int main PARAMS ((int, char **));
int
-main (argc, argv)
- int argc;
- char **argv;
+main (int argc, char **argv)
{
rtx desc;
int i;
const char *name;
progname = "genextract";
- obstack_init (rtl_obstack);
-
- if (argc <= 1)
- fatal ("No input file name.");
- if (init_md_reader (argv[1]) != SUCCESS_EXIT_CODE)
+ if (init_md_reader_args (argc, argv) != SUCCESS_EXIT_CODE)
return (FATAL_EXIT_CODE);
/* Assign sequential codes to all entries in the machine description
printf ("#include \"config.h\"\n");
printf ("#include \"system.h\"\n");
+ printf ("#include \"coretypes.h\"\n");
+ printf ("#include \"tm.h\"\n");
printf ("#include \"rtl.h\"\n");
printf ("#include \"insn-config.h\"\n");
printf ("#include \"recog.h\"\n");
of any missing operand whose numbers are skipped by a given pattern. */
printf ("static rtx junk ATTRIBUTE_UNUSED;\n");
- printf ("void\ninsn_extract (insn)\n");
- printf (" rtx insn;\n");
+ printf ("void\ninsn_extract (rtx insn)\n");
printf ("{\n");
- printf (" register rtx *ro = recog_data.operand;\n");
- printf (" register rtx **ro_loc = recog_data.operand_loc;\n");
+ printf (" rtx *ro = recog_data.operand;\n");
+ printf (" rtx **ro_loc = recog_data.operand_loc;\n");
printf (" rtx pat = PATTERN (insn);\n");
printf (" int i ATTRIBUTE_UNUSED;\n\n");
- printf (" memset (ro, 0, sizeof (*ro) * MAX_RECOG_OPERANDS);\n");
- printf (" memset (ro_loc, 0, sizeof (*ro_loc) * MAX_RECOG_OPERANDS);\n");
+#ifdef ENABLE_CHECKING
+ printf (" memset (ro, 0xab, sizeof (*ro) * MAX_RECOG_OPERANDS);\n");
+ printf (" memset (ro_loc, 0xab, sizeof (*ro_loc) * MAX_RECOG_OPERANDS);\n");
+#endif
printf (" switch (INSN_CODE (insn))\n");
printf (" {\n");
printf (" case -1:\n");
else if (GET_CODE (desc) == DEFINE_PEEPHOLE)
{
- struct code_ptr *link
- = (struct code_ptr *) xmalloc (sizeof (struct code_ptr));
+ struct code_ptr *link = xmalloc (sizeof (struct code_ptr));
link->insn_code = insn_code_number;
link->next = peepholes;
/* The vector in the insn says how many operands it has.
And all it contains are operands. In fact, the vector was
- created just for the sake of this function. */
+ created just for the sake of this function. We need to set the
+ location of the operands for sake of simplifications after
+ extraction, like eliminating subregs. */
printf (" for (i = XVECLEN (pat, 0) - 1; i >= 0; i--)\n");
- printf (" ro[i] = XVECEXP (pat, 0, i);\n");
+ printf (" ro[i] = *(ro_loc[i] = &XVECEXP (pat, 0, i));\n");
printf (" break;\n\n");
}
else
printf (" case %d:\n", i);
}
-
+
for (i = 0; i < p->op_count; i++)
{
if (p->oplocs[i] == 0)
/* This should never be reached. Note that we would also reach this abort
if we tried to extract something whose INSN_CODE was a DEFINE_EXPAND or
DEFINE_SPLIT, but that is correct. */
- printf (" default:\n abort ();\n");
+ printf (" default:\n gcc_unreachable ();\n");
printf (" }\n}\n");
/* Define this so we can link with print-rtl.o to get debug_rtx function. */
const char *
-get_insn_name (code)
- int code ATTRIBUTE_UNUSED;
+get_insn_name (int code ATTRIBUTE_UNUSED)
{
if (code < insn_name_ptr_size)
return insn_name_ptr[code];
}
static void
-record_insn_name (code, name)
- int code;
- const char *name;
+record_insn_name (int code, const char *name)
{
static const char *last_real_name = "insn";
static int last_real_code = 0;
{
int new_size;
new_size = (insn_name_ptr_size ? insn_name_ptr_size * 2 : 512);
- insn_name_ptr =
- (char **) xrealloc (insn_name_ptr, sizeof(char *) * new_size);
- memset (insn_name_ptr + insn_name_ptr_size, 0,
+ insn_name_ptr = xrealloc (insn_name_ptr, sizeof(char *) * new_size);
+ memset (insn_name_ptr + insn_name_ptr_size, 0,
sizeof(char *) * (new_size - insn_name_ptr_size));
insn_name_ptr_size = new_size;
}
last_real_name = new = xstrdup (name);
last_real_code = code;
}
-
+
insn_name_ptr[code] = new;
-}
+}
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