/* Support routines for the various generation passes.
|
/* Support routines for the various generation passes.
|
Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
|
Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
|
Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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|
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This file is part of GCC.
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This file is part of GCC.
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|
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GCC is free software; you can redistribute it and/or modify it
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GCC is free software; you can redistribute it and/or modify it
|
under the terms of the GNU General Public License as published by
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under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 3, or (at your option)
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the Free Software Foundation; either version 3, or (at your option)
|
any later version.
|
any later version.
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT
|
GCC is distributed in the hope that it will be useful, but WITHOUT
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
License for more details.
|
License for more details.
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|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with GCC; see the file COPYING3. If not see
|
along with GCC; see the file COPYING3. If not see
|
<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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|
|
#include "bconfig.h"
|
#include "bconfig.h"
|
#include "system.h"
|
#include "system.h"
|
#include "coretypes.h"
|
#include "coretypes.h"
|
#include "tm.h"
|
#include "tm.h"
|
#include "rtl.h"
|
#include "rtl.h"
|
#include "obstack.h"
|
#include "obstack.h"
|
#include "errors.h"
|
#include "errors.h"
|
#include "hashtab.h"
|
#include "hashtab.h"
|
#include "gensupport.h"
|
#include "gensupport.h"
|
|
|
|
|
/* In case some macros used by files we include need it, define this here. */
|
/* In case some macros used by files we include need it, define this here. */
|
int target_flags;
|
int target_flags;
|
|
|
int insn_elision = 1;
|
int insn_elision = 1;
|
|
|
const char *in_fname;
|
const char *in_fname;
|
|
|
/* This callback will be invoked whenever an rtl include directive is
|
/* This callback will be invoked whenever an rtl include directive is
|
processed. To be used for creation of the dependency file. */
|
processed. To be used for creation of the dependency file. */
|
void (*include_callback) (const char *);
|
void (*include_callback) (const char *);
|
|
|
static struct obstack obstack;
|
static struct obstack obstack;
|
struct obstack *rtl_obstack = &obstack;
|
struct obstack *rtl_obstack = &obstack;
|
|
|
static int sequence_num;
|
static int sequence_num;
|
static int errors;
|
static int errors;
|
|
|
static int predicable_default;
|
static int predicable_default;
|
static const char *predicable_true;
|
static const char *predicable_true;
|
static const char *predicable_false;
|
static const char *predicable_false;
|
|
|
static htab_t condition_table;
|
static htab_t condition_table;
|
|
|
static char *base_dir = NULL;
|
static char *base_dir = NULL;
|
|
|
/* We initially queue all patterns, process the define_insn and
|
/* We initially queue all patterns, process the define_insn and
|
define_cond_exec patterns, then return them one at a time. */
|
define_cond_exec patterns, then return them one at a time. */
|
|
|
struct queue_elem
|
struct queue_elem
|
{
|
{
|
rtx data;
|
rtx data;
|
const char *filename;
|
const char *filename;
|
int lineno;
|
int lineno;
|
struct queue_elem *next;
|
struct queue_elem *next;
|
/* In a DEFINE_INSN that came from a DEFINE_INSN_AND_SPLIT, SPLIT
|
/* In a DEFINE_INSN that came from a DEFINE_INSN_AND_SPLIT, SPLIT
|
points to the generated DEFINE_SPLIT. */
|
points to the generated DEFINE_SPLIT. */
|
struct queue_elem *split;
|
struct queue_elem *split;
|
};
|
};
|
|
|
static struct queue_elem *define_attr_queue;
|
static struct queue_elem *define_attr_queue;
|
static struct queue_elem **define_attr_tail = &define_attr_queue;
|
static struct queue_elem **define_attr_tail = &define_attr_queue;
|
static struct queue_elem *define_pred_queue;
|
static struct queue_elem *define_pred_queue;
|
static struct queue_elem **define_pred_tail = &define_pred_queue;
|
static struct queue_elem **define_pred_tail = &define_pred_queue;
|
static struct queue_elem *define_insn_queue;
|
static struct queue_elem *define_insn_queue;
|
static struct queue_elem **define_insn_tail = &define_insn_queue;
|
static struct queue_elem **define_insn_tail = &define_insn_queue;
|
static struct queue_elem *define_cond_exec_queue;
|
static struct queue_elem *define_cond_exec_queue;
|
static struct queue_elem **define_cond_exec_tail = &define_cond_exec_queue;
|
static struct queue_elem **define_cond_exec_tail = &define_cond_exec_queue;
|
static struct queue_elem *other_queue;
|
static struct queue_elem *other_queue;
|
static struct queue_elem **other_tail = &other_queue;
|
static struct queue_elem **other_tail = &other_queue;
|
|
|
static struct queue_elem *queue_pattern (rtx, struct queue_elem ***,
|
static struct queue_elem *queue_pattern (rtx, struct queue_elem ***,
|
const char *, int);
|
const char *, int);
|
|
|
/* Current maximum length of directory names in the search path
|
/* Current maximum length of directory names in the search path
|
for include files. (Altered as we get more of them.) */
|
for include files. (Altered as we get more of them.) */
|
|
|
size_t max_include_len;
|
size_t max_include_len;
|
|
|
struct file_name_list
|
struct file_name_list
|
{
|
{
|
struct file_name_list *next;
|
struct file_name_list *next;
|
const char *fname;
|
const char *fname;
|
};
|
};
|
|
|
struct file_name_list *first_dir_md_include = 0; /* First dir to search */
|
struct file_name_list *first_dir_md_include = 0; /* First dir to search */
|
/* First dir to search for <file> */
|
/* First dir to search for <file> */
|
struct file_name_list *first_bracket_include = 0;
|
struct file_name_list *first_bracket_include = 0;
|
struct file_name_list *last_dir_md_include = 0; /* Last in chain */
|
struct file_name_list *last_dir_md_include = 0; /* Last in chain */
|
|
|
static void remove_constraints (rtx);
|
static void remove_constraints (rtx);
|
static void process_rtx (rtx, int);
|
static void process_rtx (rtx, int);
|
|
|
static int is_predicable (struct queue_elem *);
|
static int is_predicable (struct queue_elem *);
|
static void identify_predicable_attribute (void);
|
static void identify_predicable_attribute (void);
|
static int n_alternatives (const char *);
|
static int n_alternatives (const char *);
|
static void collect_insn_data (rtx, int *, int *);
|
static void collect_insn_data (rtx, int *, int *);
|
static rtx alter_predicate_for_insn (rtx, int, int, int);
|
static rtx alter_predicate_for_insn (rtx, int, int, int);
|
static const char *alter_test_for_insn (struct queue_elem *,
|
static const char *alter_test_for_insn (struct queue_elem *,
|
struct queue_elem *);
|
struct queue_elem *);
|
static char *shift_output_template (char *, const char *, int);
|
static char *shift_output_template (char *, const char *, int);
|
static const char *alter_output_for_insn (struct queue_elem *,
|
static const char *alter_output_for_insn (struct queue_elem *,
|
struct queue_elem *,
|
struct queue_elem *,
|
int, int);
|
int, int);
|
static void process_one_cond_exec (struct queue_elem *);
|
static void process_one_cond_exec (struct queue_elem *);
|
static void process_define_cond_exec (void);
|
static void process_define_cond_exec (void);
|
static void process_include (rtx, int);
|
static void process_include (rtx, int);
|
static char *save_string (const char *, int);
|
static char *save_string (const char *, int);
|
static void init_predicate_table (void);
|
static void init_predicate_table (void);
|
static void record_insn_name (int, const char *);
|
static void record_insn_name (int, const char *);
|
|
|
void
|
void
|
message_with_line (int lineno, const char *msg, ...)
|
message_with_line (int lineno, const char *msg, ...)
|
{
|
{
|
va_list ap;
|
va_list ap;
|
|
|
va_start (ap, msg);
|
va_start (ap, msg);
|
|
|
fprintf (stderr, "%s:%d: ", read_rtx_filename, lineno);
|
fprintf (stderr, "%s:%d: ", read_rtx_filename, lineno);
|
vfprintf (stderr, msg, ap);
|
vfprintf (stderr, msg, ap);
|
fputc ('\n', stderr);
|
fputc ('\n', stderr);
|
|
|
va_end (ap);
|
va_end (ap);
|
}
|
}
|
|
|
/* Make a version of gen_rtx_CONST_INT so that GEN_INT can be used in
|
/* Make a version of gen_rtx_CONST_INT so that GEN_INT can be used in
|
the gensupport programs. */
|
the gensupport programs. */
|
|
|
rtx
|
rtx
|
gen_rtx_CONST_INT (enum machine_mode ARG_UNUSED (mode),
|
gen_rtx_CONST_INT (enum machine_mode ARG_UNUSED (mode),
|
HOST_WIDE_INT arg)
|
HOST_WIDE_INT arg)
|
{
|
{
|
rtx rt = rtx_alloc (CONST_INT);
|
rtx rt = rtx_alloc (CONST_INT);
|
|
|
XWINT (rt, 0) = arg;
|
XWINT (rt, 0) = arg;
|
return rt;
|
return rt;
|
}
|
}
|
|
|
/* Queue PATTERN on LIST_TAIL. Return the address of the new queue
|
/* Queue PATTERN on LIST_TAIL. Return the address of the new queue
|
element. */
|
element. */
|
|
|
static struct queue_elem *
|
static struct queue_elem *
|
queue_pattern (rtx pattern, struct queue_elem ***list_tail,
|
queue_pattern (rtx pattern, struct queue_elem ***list_tail,
|
const char *filename, int lineno)
|
const char *filename, int lineno)
|
{
|
{
|
struct queue_elem *e = XNEW(struct queue_elem);
|
struct queue_elem *e = XNEW(struct queue_elem);
|
e->data = pattern;
|
e->data = pattern;
|
e->filename = filename;
|
e->filename = filename;
|
e->lineno = lineno;
|
e->lineno = lineno;
|
e->next = NULL;
|
e->next = NULL;
|
e->split = NULL;
|
e->split = NULL;
|
**list_tail = e;
|
**list_tail = e;
|
*list_tail = &e->next;
|
*list_tail = &e->next;
|
return e;
|
return e;
|
}
|
}
|
|
|
/* Recursively remove constraints from an rtx. */
|
/* Recursively remove constraints from an rtx. */
|
|
|
static void
|
static void
|
remove_constraints (rtx part)
|
remove_constraints (rtx part)
|
{
|
{
|
int i, j;
|
int i, j;
|
const char *format_ptr;
|
const char *format_ptr;
|
|
|
if (part == 0)
|
if (part == 0)
|
return;
|
return;
|
|
|
if (GET_CODE (part) == MATCH_OPERAND)
|
if (GET_CODE (part) == MATCH_OPERAND)
|
XSTR (part, 2) = "";
|
XSTR (part, 2) = "";
|
else if (GET_CODE (part) == MATCH_SCRATCH)
|
else if (GET_CODE (part) == MATCH_SCRATCH)
|
XSTR (part, 1) = "";
|
XSTR (part, 1) = "";
|
|
|
format_ptr = GET_RTX_FORMAT (GET_CODE (part));
|
format_ptr = GET_RTX_FORMAT (GET_CODE (part));
|
|
|
for (i = 0; i < GET_RTX_LENGTH (GET_CODE (part)); i++)
|
for (i = 0; i < GET_RTX_LENGTH (GET_CODE (part)); i++)
|
switch (*format_ptr++)
|
switch (*format_ptr++)
|
{
|
{
|
case 'e':
|
case 'e':
|
case 'u':
|
case 'u':
|
remove_constraints (XEXP (part, i));
|
remove_constraints (XEXP (part, i));
|
break;
|
break;
|
case 'E':
|
case 'E':
|
if (XVEC (part, i) != NULL)
|
if (XVEC (part, i) != NULL)
|
for (j = 0; j < XVECLEN (part, i); j++)
|
for (j = 0; j < XVECLEN (part, i); j++)
|
remove_constraints (XVECEXP (part, i, j));
|
remove_constraints (XVECEXP (part, i, j));
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
/* Process an include file assuming that it lives in gcc/config/{target}/
|
/* Process an include file assuming that it lives in gcc/config/{target}/
|
if the include looks like (include "file"). */
|
if the include looks like (include "file"). */
|
|
|
static void
|
static void
|
process_include (rtx desc, int lineno)
|
process_include (rtx desc, int lineno)
|
{
|
{
|
const char *filename = XSTR (desc, 0);
|
const char *filename = XSTR (desc, 0);
|
const char *old_filename;
|
const char *old_filename;
|
int old_lineno;
|
int old_lineno;
|
char *pathname;
|
char *pathname;
|
FILE *input_file;
|
FILE *input_file;
|
|
|
/* If specified file name is absolute, skip the include stack. */
|
/* If specified file name is absolute, skip the include stack. */
|
if (! IS_ABSOLUTE_PATH (filename))
|
if (! IS_ABSOLUTE_PATH (filename))
|
{
|
{
|
struct file_name_list *stackp;
|
struct file_name_list *stackp;
|
|
|
/* Search directory path, trying to open the file. */
|
/* Search directory path, trying to open the file. */
|
for (stackp = first_dir_md_include; stackp; stackp = stackp->next)
|
for (stackp = first_dir_md_include; stackp; stackp = stackp->next)
|
{
|
{
|
static const char sep[2] = { DIR_SEPARATOR, '\0' };
|
static const char sep[2] = { DIR_SEPARATOR, '\0' };
|
|
|
pathname = concat (stackp->fname, sep, filename, NULL);
|
pathname = concat (stackp->fname, sep, filename, NULL);
|
input_file = fopen (pathname, "r");
|
input_file = fopen (pathname, "r");
|
if (input_file != NULL)
|
if (input_file != NULL)
|
goto success;
|
goto success;
|
free (pathname);
|
free (pathname);
|
}
|
}
|
}
|
}
|
|
|
if (base_dir)
|
if (base_dir)
|
pathname = concat (base_dir, filename, NULL);
|
pathname = concat (base_dir, filename, NULL);
|
else
|
else
|
pathname = xstrdup (filename);
|
pathname = xstrdup (filename);
|
input_file = fopen (pathname, "r");
|
input_file = fopen (pathname, "r");
|
if (input_file == NULL)
|
if (input_file == NULL)
|
{
|
{
|
free (pathname);
|
free (pathname);
|
message_with_line (lineno, "include file `%s' not found", filename);
|
message_with_line (lineno, "include file `%s' not found", filename);
|
errors = 1;
|
errors = 1;
|
return;
|
return;
|
}
|
}
|
success:
|
success:
|
|
|
/* Save old cursor; setup new for the new file. Note that "lineno" the
|
/* Save old cursor; setup new for the new file. Note that "lineno" the
|
argument to this function is the beginning of the include statement,
|
argument to this function is the beginning of the include statement,
|
while read_rtx_lineno has already been advanced. */
|
while read_rtx_lineno has already been advanced. */
|
old_filename = read_rtx_filename;
|
old_filename = read_rtx_filename;
|
old_lineno = read_rtx_lineno;
|
old_lineno = read_rtx_lineno;
|
read_rtx_filename = pathname;
|
read_rtx_filename = pathname;
|
read_rtx_lineno = 1;
|
read_rtx_lineno = 1;
|
|
|
if (include_callback)
|
if (include_callback)
|
include_callback (pathname);
|
include_callback (pathname);
|
|
|
/* Read the entire file. */
|
/* Read the entire file. */
|
while (read_rtx (input_file, &desc, &lineno))
|
while (read_rtx (input_file, &desc, &lineno))
|
process_rtx (desc, lineno);
|
process_rtx (desc, lineno);
|
|
|
/* Do not free pathname. It is attached to the various rtx queue
|
/* Do not free pathname. It is attached to the various rtx queue
|
elements. */
|
elements. */
|
|
|
read_rtx_filename = old_filename;
|
read_rtx_filename = old_filename;
|
read_rtx_lineno = old_lineno;
|
read_rtx_lineno = old_lineno;
|
|
|
fclose (input_file);
|
fclose (input_file);
|
}
|
}
|
|
|
/* Process a top level rtx in some way, queuing as appropriate. */
|
/* Process a top level rtx in some way, queuing as appropriate. */
|
|
|
static void
|
static void
|
process_rtx (rtx desc, int lineno)
|
process_rtx (rtx desc, int lineno)
|
{
|
{
|
switch (GET_CODE (desc))
|
switch (GET_CODE (desc))
|
{
|
{
|
case DEFINE_INSN:
|
case DEFINE_INSN:
|
queue_pattern (desc, &define_insn_tail, read_rtx_filename, lineno);
|
queue_pattern (desc, &define_insn_tail, read_rtx_filename, lineno);
|
break;
|
break;
|
|
|
case DEFINE_COND_EXEC:
|
case DEFINE_COND_EXEC:
|
queue_pattern (desc, &define_cond_exec_tail, read_rtx_filename, lineno);
|
queue_pattern (desc, &define_cond_exec_tail, read_rtx_filename, lineno);
|
break;
|
break;
|
|
|
case DEFINE_ATTR:
|
case DEFINE_ATTR:
|
queue_pattern (desc, &define_attr_tail, read_rtx_filename, lineno);
|
queue_pattern (desc, &define_attr_tail, read_rtx_filename, lineno);
|
break;
|
break;
|
|
|
case DEFINE_PREDICATE:
|
case DEFINE_PREDICATE:
|
case DEFINE_SPECIAL_PREDICATE:
|
case DEFINE_SPECIAL_PREDICATE:
|
case DEFINE_CONSTRAINT:
|
case DEFINE_CONSTRAINT:
|
case DEFINE_REGISTER_CONSTRAINT:
|
case DEFINE_REGISTER_CONSTRAINT:
|
case DEFINE_MEMORY_CONSTRAINT:
|
case DEFINE_MEMORY_CONSTRAINT:
|
case DEFINE_ADDRESS_CONSTRAINT:
|
case DEFINE_ADDRESS_CONSTRAINT:
|
queue_pattern (desc, &define_pred_tail, read_rtx_filename, lineno);
|
queue_pattern (desc, &define_pred_tail, read_rtx_filename, lineno);
|
break;
|
break;
|
|
|
case INCLUDE:
|
case INCLUDE:
|
process_include (desc, lineno);
|
process_include (desc, lineno);
|
break;
|
break;
|
|
|
case DEFINE_INSN_AND_SPLIT:
|
case DEFINE_INSN_AND_SPLIT:
|
{
|
{
|
const char *split_cond;
|
const char *split_cond;
|
rtx split;
|
rtx split;
|
rtvec attr;
|
rtvec attr;
|
int i;
|
int i;
|
struct queue_elem *insn_elem;
|
struct queue_elem *insn_elem;
|
struct queue_elem *split_elem;
|
struct queue_elem *split_elem;
|
|
|
/* Create a split with values from the insn_and_split. */
|
/* Create a split with values from the insn_and_split. */
|
split = rtx_alloc (DEFINE_SPLIT);
|
split = rtx_alloc (DEFINE_SPLIT);
|
|
|
i = XVECLEN (desc, 1);
|
i = XVECLEN (desc, 1);
|
XVEC (split, 0) = rtvec_alloc (i);
|
XVEC (split, 0) = rtvec_alloc (i);
|
while (--i >= 0)
|
while (--i >= 0)
|
{
|
{
|
XVECEXP (split, 0, i) = copy_rtx (XVECEXP (desc, 1, i));
|
XVECEXP (split, 0, i) = copy_rtx (XVECEXP (desc, 1, i));
|
remove_constraints (XVECEXP (split, 0, i));
|
remove_constraints (XVECEXP (split, 0, i));
|
}
|
}
|
|
|
/* If the split condition starts with "&&", append it to the
|
/* If the split condition starts with "&&", append it to the
|
insn condition to create the new split condition. */
|
insn condition to create the new split condition. */
|
split_cond = XSTR (desc, 4);
|
split_cond = XSTR (desc, 4);
|
if (split_cond[0] == '&' && split_cond[1] == '&')
|
if (split_cond[0] == '&' && split_cond[1] == '&')
|
{
|
{
|
copy_rtx_ptr_loc (split_cond + 2, split_cond);
|
copy_rtx_ptr_loc (split_cond + 2, split_cond);
|
split_cond = join_c_conditions (XSTR (desc, 2), split_cond + 2);
|
split_cond = join_c_conditions (XSTR (desc, 2), split_cond + 2);
|
}
|
}
|
XSTR (split, 1) = split_cond;
|
XSTR (split, 1) = split_cond;
|
XVEC (split, 2) = XVEC (desc, 5);
|
XVEC (split, 2) = XVEC (desc, 5);
|
XSTR (split, 3) = XSTR (desc, 6);
|
XSTR (split, 3) = XSTR (desc, 6);
|
|
|
/* Fix up the DEFINE_INSN. */
|
/* Fix up the DEFINE_INSN. */
|
attr = XVEC (desc, 7);
|
attr = XVEC (desc, 7);
|
PUT_CODE (desc, DEFINE_INSN);
|
PUT_CODE (desc, DEFINE_INSN);
|
XVEC (desc, 4) = attr;
|
XVEC (desc, 4) = attr;
|
|
|
/* Queue them. */
|
/* Queue them. */
|
insn_elem
|
insn_elem
|
= queue_pattern (desc, &define_insn_tail, read_rtx_filename,
|
= queue_pattern (desc, &define_insn_tail, read_rtx_filename,
|
lineno);
|
lineno);
|
split_elem
|
split_elem
|
= queue_pattern (split, &other_tail, read_rtx_filename, lineno);
|
= queue_pattern (split, &other_tail, read_rtx_filename, lineno);
|
insn_elem->split = split_elem;
|
insn_elem->split = split_elem;
|
break;
|
break;
|
}
|
}
|
|
|
default:
|
default:
|
queue_pattern (desc, &other_tail, read_rtx_filename, lineno);
|
queue_pattern (desc, &other_tail, read_rtx_filename, lineno);
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
/* Return true if attribute PREDICABLE is true for ELEM, which holds
|
/* Return true if attribute PREDICABLE is true for ELEM, which holds
|
a DEFINE_INSN. */
|
a DEFINE_INSN. */
|
|
|
static int
|
static int
|
is_predicable (struct queue_elem *elem)
|
is_predicable (struct queue_elem *elem)
|
{
|
{
|
rtvec vec = XVEC (elem->data, 4);
|
rtvec vec = XVEC (elem->data, 4);
|
const char *value;
|
const char *value;
|
int i;
|
int i;
|
|
|
if (! vec)
|
if (! vec)
|
return predicable_default;
|
return predicable_default;
|
|
|
for (i = GET_NUM_ELEM (vec) - 1; i >= 0; --i)
|
for (i = GET_NUM_ELEM (vec) - 1; i >= 0; --i)
|
{
|
{
|
rtx sub = RTVEC_ELT (vec, i);
|
rtx sub = RTVEC_ELT (vec, i);
|
switch (GET_CODE (sub))
|
switch (GET_CODE (sub))
|
{
|
{
|
case SET_ATTR:
|
case SET_ATTR:
|
if (strcmp (XSTR (sub, 0), "predicable") == 0)
|
if (strcmp (XSTR (sub, 0), "predicable") == 0)
|
{
|
{
|
value = XSTR (sub, 1);
|
value = XSTR (sub, 1);
|
goto found;
|
goto found;
|
}
|
}
|
break;
|
break;
|
|
|
case SET_ATTR_ALTERNATIVE:
|
case SET_ATTR_ALTERNATIVE:
|
if (strcmp (XSTR (sub, 0), "predicable") == 0)
|
if (strcmp (XSTR (sub, 0), "predicable") == 0)
|
{
|
{
|
message_with_line (elem->lineno,
|
message_with_line (elem->lineno,
|
"multiple alternatives for `predicable'");
|
"multiple alternatives for `predicable'");
|
errors = 1;
|
errors = 1;
|
return 0;
|
return 0;
|
}
|
}
|
break;
|
break;
|
|
|
case SET:
|
case SET:
|
if (GET_CODE (SET_DEST (sub)) != ATTR
|
if (GET_CODE (SET_DEST (sub)) != ATTR
|
|| strcmp (XSTR (SET_DEST (sub), 0), "predicable") != 0)
|
|| strcmp (XSTR (SET_DEST (sub), 0), "predicable") != 0)
|
break;
|
break;
|
sub = SET_SRC (sub);
|
sub = SET_SRC (sub);
|
if (GET_CODE (sub) == CONST_STRING)
|
if (GET_CODE (sub) == CONST_STRING)
|
{
|
{
|
value = XSTR (sub, 0);
|
value = XSTR (sub, 0);
|
goto found;
|
goto found;
|
}
|
}
|
|
|
/* ??? It would be possible to handle this if we really tried.
|
/* ??? It would be possible to handle this if we really tried.
|
It's not easy though, and I'm not going to bother until it
|
It's not easy though, and I'm not going to bother until it
|
really proves necessary. */
|
really proves necessary. */
|
message_with_line (elem->lineno,
|
message_with_line (elem->lineno,
|
"non-constant value for `predicable'");
|
"non-constant value for `predicable'");
|
errors = 1;
|
errors = 1;
|
return 0;
|
return 0;
|
|
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
}
|
}
|
|
|
return predicable_default;
|
return predicable_default;
|
|
|
found:
|
found:
|
/* Verify that predicability does not vary on the alternative. */
|
/* Verify that predicability does not vary on the alternative. */
|
/* ??? It should be possible to handle this by simply eliminating
|
/* ??? It should be possible to handle this by simply eliminating
|
the non-predicable alternatives from the insn. FRV would like
|
the non-predicable alternatives from the insn. FRV would like
|
to do this. Delay this until we've got the basics solid. */
|
to do this. Delay this until we've got the basics solid. */
|
if (strchr (value, ',') != NULL)
|
if (strchr (value, ',') != NULL)
|
{
|
{
|
message_with_line (elem->lineno,
|
message_with_line (elem->lineno,
|
"multiple alternatives for `predicable'");
|
"multiple alternatives for `predicable'");
|
errors = 1;
|
errors = 1;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Find out which value we're looking at. */
|
/* Find out which value we're looking at. */
|
if (strcmp (value, predicable_true) == 0)
|
if (strcmp (value, predicable_true) == 0)
|
return 1;
|
return 1;
|
if (strcmp (value, predicable_false) == 0)
|
if (strcmp (value, predicable_false) == 0)
|
return 0;
|
return 0;
|
|
|
message_with_line (elem->lineno,
|
message_with_line (elem->lineno,
|
"unknown value `%s' for `predicable' attribute",
|
"unknown value `%s' for `predicable' attribute",
|
value);
|
value);
|
errors = 1;
|
errors = 1;
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Examine the attribute "predicable"; discover its boolean values
|
/* Examine the attribute "predicable"; discover its boolean values
|
and its default. */
|
and its default. */
|
|
|
static void
|
static void
|
identify_predicable_attribute (void)
|
identify_predicable_attribute (void)
|
{
|
{
|
struct queue_elem *elem;
|
struct queue_elem *elem;
|
char *p_true, *p_false;
|
char *p_true, *p_false;
|
const char *value;
|
const char *value;
|
|
|
/* Look for the DEFINE_ATTR for `predicable', which must exist. */
|
/* Look for the DEFINE_ATTR for `predicable', which must exist. */
|
for (elem = define_attr_queue; elem ; elem = elem->next)
|
for (elem = define_attr_queue; elem ; elem = elem->next)
|
if (strcmp (XSTR (elem->data, 0), "predicable") == 0)
|
if (strcmp (XSTR (elem->data, 0), "predicable") == 0)
|
goto found;
|
goto found;
|
|
|
message_with_line (define_cond_exec_queue->lineno,
|
message_with_line (define_cond_exec_queue->lineno,
|
"attribute `predicable' not defined");
|
"attribute `predicable' not defined");
|
errors = 1;
|
errors = 1;
|
return;
|
return;
|
|
|
found:
|
found:
|
value = XSTR (elem->data, 1);
|
value = XSTR (elem->data, 1);
|
p_false = xstrdup (value);
|
p_false = xstrdup (value);
|
p_true = strchr (p_false, ',');
|
p_true = strchr (p_false, ',');
|
if (p_true == NULL || strchr (++p_true, ',') != NULL)
|
if (p_true == NULL || strchr (++p_true, ',') != NULL)
|
{
|
{
|
message_with_line (elem->lineno,
|
message_with_line (elem->lineno,
|
"attribute `predicable' is not a boolean");
|
"attribute `predicable' is not a boolean");
|
errors = 1;
|
errors = 1;
|
if (p_false)
|
if (p_false)
|
free (p_false);
|
free (p_false);
|
return;
|
return;
|
}
|
}
|
p_true[-1] = '\0';
|
p_true[-1] = '\0';
|
|
|
predicable_true = p_true;
|
predicable_true = p_true;
|
predicable_false = p_false;
|
predicable_false = p_false;
|
|
|
switch (GET_CODE (XEXP (elem->data, 2)))
|
switch (GET_CODE (XEXP (elem->data, 2)))
|
{
|
{
|
case CONST_STRING:
|
case CONST_STRING:
|
value = XSTR (XEXP (elem->data, 2), 0);
|
value = XSTR (XEXP (elem->data, 2), 0);
|
break;
|
break;
|
|
|
case CONST:
|
case CONST:
|
message_with_line (elem->lineno,
|
message_with_line (elem->lineno,
|
"attribute `predicable' cannot be const");
|
"attribute `predicable' cannot be const");
|
errors = 1;
|
errors = 1;
|
if (p_false)
|
if (p_false)
|
free (p_false);
|
free (p_false);
|
return;
|
return;
|
|
|
default:
|
default:
|
message_with_line (elem->lineno,
|
message_with_line (elem->lineno,
|
"attribute `predicable' must have a constant default");
|
"attribute `predicable' must have a constant default");
|
errors = 1;
|
errors = 1;
|
if (p_false)
|
if (p_false)
|
free (p_false);
|
free (p_false);
|
return;
|
return;
|
}
|
}
|
|
|
if (strcmp (value, p_true) == 0)
|
if (strcmp (value, p_true) == 0)
|
predicable_default = 1;
|
predicable_default = 1;
|
else if (strcmp (value, p_false) == 0)
|
else if (strcmp (value, p_false) == 0)
|
predicable_default = 0;
|
predicable_default = 0;
|
else
|
else
|
{
|
{
|
message_with_line (elem->lineno,
|
message_with_line (elem->lineno,
|
"unknown value `%s' for `predicable' attribute",
|
"unknown value `%s' for `predicable' attribute",
|
value);
|
value);
|
errors = 1;
|
errors = 1;
|
if (p_false)
|
if (p_false)
|
free (p_false);
|
free (p_false);
|
}
|
}
|
}
|
}
|
|
|
/* Return the number of alternatives in constraint S. */
|
/* Return the number of alternatives in constraint S. */
|
|
|
static int
|
static int
|
n_alternatives (const char *s)
|
n_alternatives (const char *s)
|
{
|
{
|
int n = 1;
|
int n = 1;
|
|
|
if (s)
|
if (s)
|
while (*s)
|
while (*s)
|
n += (*s++ == ',');
|
n += (*s++ == ',');
|
|
|
return n;
|
return n;
|
}
|
}
|
|
|
/* Determine how many alternatives there are in INSN, and how many
|
/* Determine how many alternatives there are in INSN, and how many
|
operands. */
|
operands. */
|
|
|
static void
|
static void
|
collect_insn_data (rtx pattern, int *palt, int *pmax)
|
collect_insn_data (rtx pattern, int *palt, int *pmax)
|
{
|
{
|
const char *fmt;
|
const char *fmt;
|
enum rtx_code code;
|
enum rtx_code code;
|
int i, j, len;
|
int i, j, len;
|
|
|
code = GET_CODE (pattern);
|
code = GET_CODE (pattern);
|
switch (code)
|
switch (code)
|
{
|
{
|
case MATCH_OPERAND:
|
case MATCH_OPERAND:
|
i = n_alternatives (XSTR (pattern, 2));
|
i = n_alternatives (XSTR (pattern, 2));
|
*palt = (i > *palt ? i : *palt);
|
*palt = (i > *palt ? i : *palt);
|
/* Fall through. */
|
/* Fall through. */
|
|
|
case MATCH_OPERATOR:
|
case MATCH_OPERATOR:
|
case MATCH_SCRATCH:
|
case MATCH_SCRATCH:
|
case MATCH_PARALLEL:
|
case MATCH_PARALLEL:
|
i = XINT (pattern, 0);
|
i = XINT (pattern, 0);
|
if (i > *pmax)
|
if (i > *pmax)
|
*pmax = i;
|
*pmax = i;
|
break;
|
break;
|
|
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
fmt = GET_RTX_FORMAT (code);
|
fmt = GET_RTX_FORMAT (code);
|
len = GET_RTX_LENGTH (code);
|
len = GET_RTX_LENGTH (code);
|
for (i = 0; i < len; i++)
|
for (i = 0; i < len; i++)
|
{
|
{
|
switch (fmt[i])
|
switch (fmt[i])
|
{
|
{
|
case 'e': case 'u':
|
case 'e': case 'u':
|
collect_insn_data (XEXP (pattern, i), palt, pmax);
|
collect_insn_data (XEXP (pattern, i), palt, pmax);
|
break;
|
break;
|
|
|
case 'V':
|
case 'V':
|
if (XVEC (pattern, i) == NULL)
|
if (XVEC (pattern, i) == NULL)
|
break;
|
break;
|
/* Fall through. */
|
/* Fall through. */
|
case 'E':
|
case 'E':
|
for (j = XVECLEN (pattern, i) - 1; j >= 0; --j)
|
for (j = XVECLEN (pattern, i) - 1; j >= 0; --j)
|
collect_insn_data (XVECEXP (pattern, i, j), palt, pmax);
|
collect_insn_data (XVECEXP (pattern, i, j), palt, pmax);
|
break;
|
break;
|
|
|
case 'i': case 'w': case '0': case 's': case 'S': case 'T':
|
case 'i': case 'w': case '0': case 's': case 'S': case 'T':
|
break;
|
break;
|
|
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
static rtx
|
static rtx
|
alter_predicate_for_insn (rtx pattern, int alt, int max_op, int lineno)
|
alter_predicate_for_insn (rtx pattern, int alt, int max_op, int lineno)
|
{
|
{
|
const char *fmt;
|
const char *fmt;
|
enum rtx_code code;
|
enum rtx_code code;
|
int i, j, len;
|
int i, j, len;
|
|
|
code = GET_CODE (pattern);
|
code = GET_CODE (pattern);
|
switch (code)
|
switch (code)
|
{
|
{
|
case MATCH_OPERAND:
|
case MATCH_OPERAND:
|
{
|
{
|
const char *c = XSTR (pattern, 2);
|
const char *c = XSTR (pattern, 2);
|
|
|
if (n_alternatives (c) != 1)
|
if (n_alternatives (c) != 1)
|
{
|
{
|
message_with_line (lineno,
|
message_with_line (lineno,
|
"too many alternatives for operand %d",
|
"too many alternatives for operand %d",
|
XINT (pattern, 0));
|
XINT (pattern, 0));
|
errors = 1;
|
errors = 1;
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/* Replicate C as needed to fill out ALT alternatives. */
|
/* Replicate C as needed to fill out ALT alternatives. */
|
if (c && *c && alt > 1)
|
if (c && *c && alt > 1)
|
{
|
{
|
size_t c_len = strlen (c);
|
size_t c_len = strlen (c);
|
size_t len = alt * (c_len + 1);
|
size_t len = alt * (c_len + 1);
|
char *new_c = XNEWVEC(char, len);
|
char *new_c = XNEWVEC(char, len);
|
|
|
memcpy (new_c, c, c_len);
|
memcpy (new_c, c, c_len);
|
for (i = 1; i < alt; ++i)
|
for (i = 1; i < alt; ++i)
|
{
|
{
|
new_c[i * (c_len + 1) - 1] = ',';
|
new_c[i * (c_len + 1) - 1] = ',';
|
memcpy (&new_c[i * (c_len + 1)], c, c_len);
|
memcpy (&new_c[i * (c_len + 1)], c, c_len);
|
}
|
}
|
new_c[len - 1] = '\0';
|
new_c[len - 1] = '\0';
|
XSTR (pattern, 2) = new_c;
|
XSTR (pattern, 2) = new_c;
|
}
|
}
|
}
|
}
|
/* Fall through. */
|
/* Fall through. */
|
|
|
case MATCH_OPERATOR:
|
case MATCH_OPERATOR:
|
case MATCH_SCRATCH:
|
case MATCH_SCRATCH:
|
case MATCH_PARALLEL:
|
case MATCH_PARALLEL:
|
XINT (pattern, 0) += max_op;
|
XINT (pattern, 0) += max_op;
|
break;
|
break;
|
|
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
fmt = GET_RTX_FORMAT (code);
|
fmt = GET_RTX_FORMAT (code);
|
len = GET_RTX_LENGTH (code);
|
len = GET_RTX_LENGTH (code);
|
for (i = 0; i < len; i++)
|
for (i = 0; i < len; i++)
|
{
|
{
|
rtx r;
|
rtx r;
|
|
|
switch (fmt[i])
|
switch (fmt[i])
|
{
|
{
|
case 'e': case 'u':
|
case 'e': case 'u':
|
r = alter_predicate_for_insn (XEXP (pattern, i), alt,
|
r = alter_predicate_for_insn (XEXP (pattern, i), alt,
|
max_op, lineno);
|
max_op, lineno);
|
if (r == NULL)
|
if (r == NULL)
|
return r;
|
return r;
|
break;
|
break;
|
|
|
case 'E':
|
case 'E':
|
for (j = XVECLEN (pattern, i) - 1; j >= 0; --j)
|
for (j = XVECLEN (pattern, i) - 1; j >= 0; --j)
|
{
|
{
|
r = alter_predicate_for_insn (XVECEXP (pattern, i, j),
|
r = alter_predicate_for_insn (XVECEXP (pattern, i, j),
|
alt, max_op, lineno);
|
alt, max_op, lineno);
|
if (r == NULL)
|
if (r == NULL)
|
return r;
|
return r;
|
}
|
}
|
break;
|
break;
|
|
|
case 'i': case 'w': case '0': case 's':
|
case 'i': case 'w': case '0': case 's':
|
break;
|
break;
|
|
|
default:
|
default:
|
gcc_unreachable ();
|
gcc_unreachable ();
|
}
|
}
|
}
|
}
|
|
|
return pattern;
|
return pattern;
|
}
|
}
|
|
|
static const char *
|
static const char *
|
alter_test_for_insn (struct queue_elem *ce_elem,
|
alter_test_for_insn (struct queue_elem *ce_elem,
|
struct queue_elem *insn_elem)
|
struct queue_elem *insn_elem)
|
{
|
{
|
return join_c_conditions (XSTR (ce_elem->data, 1),
|
return join_c_conditions (XSTR (ce_elem->data, 1),
|
XSTR (insn_elem->data, 2));
|
XSTR (insn_elem->data, 2));
|
}
|
}
|
|
|
/* Adjust all of the operand numbers in SRC to match the shift they'll
|
/* Adjust all of the operand numbers in SRC to match the shift they'll
|
get from an operand displacement of DISP. Return a pointer after the
|
get from an operand displacement of DISP. Return a pointer after the
|
adjusted string. */
|
adjusted string. */
|
|
|
static char *
|
static char *
|
shift_output_template (char *dest, const char *src, int disp)
|
shift_output_template (char *dest, const char *src, int disp)
|
{
|
{
|
while (*src)
|
while (*src)
|
{
|
{
|
char c = *src++;
|
char c = *src++;
|
*dest++ = c;
|
*dest++ = c;
|
if (c == '%')
|
if (c == '%')
|
{
|
{
|
c = *src++;
|
c = *src++;
|
if (ISDIGIT ((unsigned char) c))
|
if (ISDIGIT ((unsigned char) c))
|
c += disp;
|
c += disp;
|
else if (ISALPHA (c))
|
else if (ISALPHA (c))
|
{
|
{
|
*dest++ = c;
|
*dest++ = c;
|
c = *src++ + disp;
|
c = *src++ + disp;
|
}
|
}
|
*dest++ = c;
|
*dest++ = c;
|
}
|
}
|
}
|
}
|
|
|
return dest;
|
return dest;
|
}
|
}
|
|
|
static const char *
|
static const char *
|
alter_output_for_insn (struct queue_elem *ce_elem,
|
alter_output_for_insn (struct queue_elem *ce_elem,
|
struct queue_elem *insn_elem,
|
struct queue_elem *insn_elem,
|
int alt, int max_op)
|
int alt, int max_op)
|
{
|
{
|
const char *ce_out, *insn_out;
|
const char *ce_out, *insn_out;
|
char *result, *p;
|
char *result, *p;
|
size_t len, ce_len, insn_len;
|
size_t len, ce_len, insn_len;
|
|
|
/* ??? Could coordinate with genoutput to not duplicate code here. */
|
/* ??? Could coordinate with genoutput to not duplicate code here. */
|
|
|
ce_out = XSTR (ce_elem->data, 2);
|
ce_out = XSTR (ce_elem->data, 2);
|
insn_out = XTMPL (insn_elem->data, 3);
|
insn_out = XTMPL (insn_elem->data, 3);
|
if (!ce_out || *ce_out == '\0')
|
if (!ce_out || *ce_out == '\0')
|
return insn_out;
|
return insn_out;
|
|
|
ce_len = strlen (ce_out);
|
ce_len = strlen (ce_out);
|
insn_len = strlen (insn_out);
|
insn_len = strlen (insn_out);
|
|
|
if (*insn_out == '*')
|
if (*insn_out == '*')
|
/* You must take care of the predicate yourself. */
|
/* You must take care of the predicate yourself. */
|
return insn_out;
|
return insn_out;
|
|
|
if (*insn_out == '@')
|
if (*insn_out == '@')
|
{
|
{
|
len = (ce_len + 1) * alt + insn_len + 1;
|
len = (ce_len + 1) * alt + insn_len + 1;
|
p = result = XNEWVEC(char, len);
|
p = result = XNEWVEC(char, len);
|
|
|
do
|
do
|
{
|
{
|
do
|
do
|
*p++ = *insn_out++;
|
*p++ = *insn_out++;
|
while (ISSPACE ((unsigned char) *insn_out));
|
while (ISSPACE ((unsigned char) *insn_out));
|
|
|
if (*insn_out != '#')
|
if (*insn_out != '#')
|
{
|
{
|
p = shift_output_template (p, ce_out, max_op);
|
p = shift_output_template (p, ce_out, max_op);
|
*p++ = ' ';
|
*p++ = ' ';
|
}
|
}
|
|
|
do
|
do
|
*p++ = *insn_out++;
|
*p++ = *insn_out++;
|
while (*insn_out && *insn_out != '\n');
|
while (*insn_out && *insn_out != '\n');
|
}
|
}
|
while (*insn_out);
|
while (*insn_out);
|
*p = '\0';
|
*p = '\0';
|
}
|
}
|
else
|
else
|
{
|
{
|
len = ce_len + 1 + insn_len + 1;
|
len = ce_len + 1 + insn_len + 1;
|
result = XNEWVEC (char, len);
|
result = XNEWVEC (char, len);
|
|
|
p = shift_output_template (result, ce_out, max_op);
|
p = shift_output_template (result, ce_out, max_op);
|
*p++ = ' ';
|
*p++ = ' ';
|
memcpy (p, insn_out, insn_len + 1);
|
memcpy (p, insn_out, insn_len + 1);
|
}
|
}
|
|
|
return result;
|
return result;
|
}
|
}
|
|
|
/* Replicate insns as appropriate for the given DEFINE_COND_EXEC. */
|
/* Replicate insns as appropriate for the given DEFINE_COND_EXEC. */
|
|
|
static void
|
static void
|
process_one_cond_exec (struct queue_elem *ce_elem)
|
process_one_cond_exec (struct queue_elem *ce_elem)
|
{
|
{
|
struct queue_elem *insn_elem;
|
struct queue_elem *insn_elem;
|
for (insn_elem = define_insn_queue; insn_elem ; insn_elem = insn_elem->next)
|
for (insn_elem = define_insn_queue; insn_elem ; insn_elem = insn_elem->next)
|
{
|
{
|
int alternatives, max_operand;
|
int alternatives, max_operand;
|
rtx pred, insn, pattern, split;
|
rtx pred, insn, pattern, split;
|
int i;
|
int i;
|
|
|
if (! is_predicable (insn_elem))
|
if (! is_predicable (insn_elem))
|
continue;
|
continue;
|
|
|
alternatives = 1;
|
alternatives = 1;
|
max_operand = -1;
|
max_operand = -1;
|
collect_insn_data (insn_elem->data, &alternatives, &max_operand);
|
collect_insn_data (insn_elem->data, &alternatives, &max_operand);
|
max_operand += 1;
|
max_operand += 1;
|
|
|
if (XVECLEN (ce_elem->data, 0) != 1)
|
if (XVECLEN (ce_elem->data, 0) != 1)
|
{
|
{
|
message_with_line (ce_elem->lineno,
|
message_with_line (ce_elem->lineno,
|
"too many patterns in predicate");
|
"too many patterns in predicate");
|
errors = 1;
|
errors = 1;
|
return;
|
return;
|
}
|
}
|
|
|
pred = copy_rtx (XVECEXP (ce_elem->data, 0, 0));
|
pred = copy_rtx (XVECEXP (ce_elem->data, 0, 0));
|
pred = alter_predicate_for_insn (pred, alternatives, max_operand,
|
pred = alter_predicate_for_insn (pred, alternatives, max_operand,
|
ce_elem->lineno);
|
ce_elem->lineno);
|
if (pred == NULL)
|
if (pred == NULL)
|
return;
|
return;
|
|
|
/* Construct a new pattern for the new insn. */
|
/* Construct a new pattern for the new insn. */
|
insn = copy_rtx (insn_elem->data);
|
insn = copy_rtx (insn_elem->data);
|
XSTR (insn, 0) = "";
|
XSTR (insn, 0) = "";
|
pattern = rtx_alloc (COND_EXEC);
|
pattern = rtx_alloc (COND_EXEC);
|
XEXP (pattern, 0) = pred;
|
XEXP (pattern, 0) = pred;
|
if (XVECLEN (insn, 1) == 1)
|
if (XVECLEN (insn, 1) == 1)
|
{
|
{
|
XEXP (pattern, 1) = XVECEXP (insn, 1, 0);
|
XEXP (pattern, 1) = XVECEXP (insn, 1, 0);
|
XVECEXP (insn, 1, 0) = pattern;
|
XVECEXP (insn, 1, 0) = pattern;
|
PUT_NUM_ELEM (XVEC (insn, 1), 1);
|
PUT_NUM_ELEM (XVEC (insn, 1), 1);
|
}
|
}
|
else
|
else
|
{
|
{
|
XEXP (pattern, 1) = rtx_alloc (PARALLEL);
|
XEXP (pattern, 1) = rtx_alloc (PARALLEL);
|
XVEC (XEXP (pattern, 1), 0) = XVEC (insn, 1);
|
XVEC (XEXP (pattern, 1), 0) = XVEC (insn, 1);
|
XVEC (insn, 1) = rtvec_alloc (1);
|
XVEC (insn, 1) = rtvec_alloc (1);
|
XVECEXP (insn, 1, 0) = pattern;
|
XVECEXP (insn, 1, 0) = pattern;
|
}
|
}
|
|
|
XSTR (insn, 2) = alter_test_for_insn (ce_elem, insn_elem);
|
XSTR (insn, 2) = alter_test_for_insn (ce_elem, insn_elem);
|
XTMPL (insn, 3) = alter_output_for_insn (ce_elem, insn_elem,
|
XTMPL (insn, 3) = alter_output_for_insn (ce_elem, insn_elem,
|
alternatives, max_operand);
|
alternatives, max_operand);
|
|
|
/* ??? Set `predicable' to false. Not crucial since it's really
|
/* ??? Set `predicable' to false. Not crucial since it's really
|
only used here, and we won't reprocess this new pattern. */
|
only used here, and we won't reprocess this new pattern. */
|
|
|
/* Put the new pattern on the `other' list so that it
|
/* Put the new pattern on the `other' list so that it
|
(a) is not reprocessed by other define_cond_exec patterns
|
(a) is not reprocessed by other define_cond_exec patterns
|
(b) appears after all normal define_insn patterns.
|
(b) appears after all normal define_insn patterns.
|
|
|
??? B is debatable. If one has normal insns that match
|
??? B is debatable. If one has normal insns that match
|
cond_exec patterns, they will be preferred over these
|
cond_exec patterns, they will be preferred over these
|
generated patterns. Whether this matters in practice, or if
|
generated patterns. Whether this matters in practice, or if
|
it's a good thing, or whether we should thread these new
|
it's a good thing, or whether we should thread these new
|
patterns into the define_insn chain just after their generator
|
patterns into the define_insn chain just after their generator
|
is something we'll have to experiment with. */
|
is something we'll have to experiment with. */
|
|
|
queue_pattern (insn, &other_tail, insn_elem->filename,
|
queue_pattern (insn, &other_tail, insn_elem->filename,
|
insn_elem->lineno);
|
insn_elem->lineno);
|
|
|
if (!insn_elem->split)
|
if (!insn_elem->split)
|
continue;
|
continue;
|
|
|
/* If the original insn came from a define_insn_and_split,
|
/* If the original insn came from a define_insn_and_split,
|
generate a new split to handle the predicated insn. */
|
generate a new split to handle the predicated insn. */
|
split = copy_rtx (insn_elem->split->data);
|
split = copy_rtx (insn_elem->split->data);
|
/* Predicate the pattern matched by the split. */
|
/* Predicate the pattern matched by the split. */
|
pattern = rtx_alloc (COND_EXEC);
|
pattern = rtx_alloc (COND_EXEC);
|
XEXP (pattern, 0) = pred;
|
XEXP (pattern, 0) = pred;
|
if (XVECLEN (split, 0) == 1)
|
if (XVECLEN (split, 0) == 1)
|
{
|
{
|
XEXP (pattern, 1) = XVECEXP (split, 0, 0);
|
XEXP (pattern, 1) = XVECEXP (split, 0, 0);
|
XVECEXP (split, 0, 0) = pattern;
|
XVECEXP (split, 0, 0) = pattern;
|
PUT_NUM_ELEM (XVEC (split, 0), 1);
|
PUT_NUM_ELEM (XVEC (split, 0), 1);
|
}
|
}
|
else
|
else
|
{
|
{
|
XEXP (pattern, 1) = rtx_alloc (PARALLEL);
|
XEXP (pattern, 1) = rtx_alloc (PARALLEL);
|
XVEC (XEXP (pattern, 1), 0) = XVEC (split, 0);
|
XVEC (XEXP (pattern, 1), 0) = XVEC (split, 0);
|
XVEC (split, 0) = rtvec_alloc (1);
|
XVEC (split, 0) = rtvec_alloc (1);
|
XVECEXP (split, 0, 0) = pattern;
|
XVECEXP (split, 0, 0) = pattern;
|
}
|
}
|
/* Predicate all of the insns generated by the split. */
|
/* Predicate all of the insns generated by the split. */
|
for (i = 0; i < XVECLEN (split, 2); i++)
|
for (i = 0; i < XVECLEN (split, 2); i++)
|
{
|
{
|
pattern = rtx_alloc (COND_EXEC);
|
pattern = rtx_alloc (COND_EXEC);
|
XEXP (pattern, 0) = pred;
|
XEXP (pattern, 0) = pred;
|
XEXP (pattern, 1) = XVECEXP (split, 2, i);
|
XEXP (pattern, 1) = XVECEXP (split, 2, i);
|
XVECEXP (split, 2, i) = pattern;
|
XVECEXP (split, 2, i) = pattern;
|
}
|
}
|
/* Add the new split to the queue. */
|
/* Add the new split to the queue. */
|
queue_pattern (split, &other_tail, read_rtx_filename,
|
queue_pattern (split, &other_tail, read_rtx_filename,
|
insn_elem->split->lineno);
|
insn_elem->split->lineno);
|
}
|
}
|
}
|
}
|
|
|
/* If we have any DEFINE_COND_EXEC patterns, expand the DEFINE_INSN
|
/* If we have any DEFINE_COND_EXEC patterns, expand the DEFINE_INSN
|
patterns appropriately. */
|
patterns appropriately. */
|
|
|
static void
|
static void
|
process_define_cond_exec (void)
|
process_define_cond_exec (void)
|
{
|
{
|
struct queue_elem *elem;
|
struct queue_elem *elem;
|
|
|
identify_predicable_attribute ();
|
identify_predicable_attribute ();
|
if (errors)
|
if (errors)
|
return;
|
return;
|
|
|
for (elem = define_cond_exec_queue; elem ; elem = elem->next)
|
for (elem = define_cond_exec_queue; elem ; elem = elem->next)
|
process_one_cond_exec (elem);
|
process_one_cond_exec (elem);
|
}
|
}
|
|
|
static char *
|
static char *
|
save_string (const char *s, int len)
|
save_string (const char *s, int len)
|
{
|
{
|
char *result = XNEWVEC (char, len + 1);
|
char *result = XNEWVEC (char, len + 1);
|
|
|
memcpy (result, s, len);
|
memcpy (result, s, len);
|
result[len] = 0;
|
result[len] = 0;
|
return result;
|
return result;
|
}
|
}
|
|
|
|
|
/* The entry point for initializing the reader. */
|
/* The entry point for initializing the reader. */
|
|
|
int
|
int
|
init_md_reader_args_cb (int argc, char **argv, bool (*parse_opt)(const char *))
|
init_md_reader_args_cb (int argc, char **argv, bool (*parse_opt)(const char *))
|
{
|
{
|
FILE *input_file;
|
FILE *input_file;
|
int c, i, lineno;
|
int c, i, lineno;
|
char *lastsl;
|
char *lastsl;
|
rtx desc;
|
rtx desc;
|
bool no_more_options;
|
bool no_more_options;
|
bool already_read_stdin;
|
bool already_read_stdin;
|
|
|
/* Unlock the stdio streams. */
|
/* Unlock the stdio streams. */
|
unlock_std_streams ();
|
unlock_std_streams ();
|
|
|
/* First we loop over all the options. */
|
/* First we loop over all the options. */
|
for (i = 1; i < argc; i++)
|
for (i = 1; i < argc; i++)
|
{
|
{
|
if (argv[i][0] != '-')
|
if (argv[i][0] != '-')
|
continue;
|
continue;
|
|
|
c = argv[i][1];
|
c = argv[i][1];
|
switch (c)
|
switch (c)
|
{
|
{
|
case 'I': /* Add directory to path for includes. */
|
case 'I': /* Add directory to path for includes. */
|
{
|
{
|
struct file_name_list *dirtmp;
|
struct file_name_list *dirtmp;
|
|
|
dirtmp = XNEW (struct file_name_list);
|
dirtmp = XNEW (struct file_name_list);
|
dirtmp->next = 0; /* New one goes on the end */
|
dirtmp->next = 0; /* New one goes on the end */
|
if (first_dir_md_include == 0)
|
if (first_dir_md_include == 0)
|
first_dir_md_include = dirtmp;
|
first_dir_md_include = dirtmp;
|
else
|
else
|
last_dir_md_include->next = dirtmp;
|
last_dir_md_include->next = dirtmp;
|
last_dir_md_include = dirtmp; /* Tail follows the last one */
|
last_dir_md_include = dirtmp; /* Tail follows the last one */
|
if (argv[i][1] == 'I' && argv[i][2] != 0)
|
if (argv[i][1] == 'I' && argv[i][2] != 0)
|
dirtmp->fname = argv[i] + 2;
|
dirtmp->fname = argv[i] + 2;
|
else if (i + 1 == argc)
|
else if (i + 1 == argc)
|
fatal ("directory name missing after -I option");
|
fatal ("directory name missing after -I option");
|
else
|
else
|
dirtmp->fname = argv[++i];
|
dirtmp->fname = argv[++i];
|
if (strlen (dirtmp->fname) > max_include_len)
|
if (strlen (dirtmp->fname) > max_include_len)
|
max_include_len = strlen (dirtmp->fname);
|
max_include_len = strlen (dirtmp->fname);
|
}
|
}
|
break;
|
break;
|
|
|
case '\0':
|
case '\0':
|
/* An argument consisting of exactly one dash is a request to
|
/* An argument consisting of exactly one dash is a request to
|
read stdin. This will be handled in the second loop. */
|
read stdin. This will be handled in the second loop. */
|
continue;
|
continue;
|
|
|
case '-':
|
case '-':
|
/* An argument consisting of just two dashes causes option
|
/* An argument consisting of just two dashes causes option
|
parsing to cease. */
|
parsing to cease. */
|
if (argv[i][2] == '\0')
|
if (argv[i][2] == '\0')
|
goto stop_parsing_options;
|
goto stop_parsing_options;
|
|
|
default:
|
default:
|
/* The program may have provided a callback so it can
|
/* The program may have provided a callback so it can
|
accept its own options. */
|
accept its own options. */
|
if (parse_opt && parse_opt (argv[i]))
|
if (parse_opt && parse_opt (argv[i]))
|
break;
|
break;
|
|
|
fatal ("invalid option `%s'", argv[i]);
|
fatal ("invalid option `%s'", argv[i]);
|
}
|
}
|
}
|
}
|
|
|
stop_parsing_options:
|
stop_parsing_options:
|
|
|
/* Prepare to read input. */
|
/* Prepare to read input. */
|
condition_table = htab_create (500, hash_c_test, cmp_c_test, NULL);
|
condition_table = htab_create (500, hash_c_test, cmp_c_test, NULL);
|
init_predicate_table ();
|
init_predicate_table ();
|
obstack_init (rtl_obstack);
|
obstack_init (rtl_obstack);
|
errors = 0;
|
errors = 0;
|
sequence_num = 0;
|
sequence_num = 0;
|
no_more_options = false;
|
no_more_options = false;
|
already_read_stdin = false;
|
already_read_stdin = false;
|
|
|
|
|
/* Now loop over all input files. */
|
/* Now loop over all input files. */
|
for (i = 1; i < argc; i++)
|
for (i = 1; i < argc; i++)
|
{
|
{
|
if (argv[i][0] == '-')
|
if (argv[i][0] == '-')
|
{
|
{
|
if (argv[i][1] == '\0')
|
if (argv[i][1] == '\0')
|
{
|
{
|
/* Read stdin. */
|
/* Read stdin. */
|
if (already_read_stdin)
|
if (already_read_stdin)
|
fatal ("cannot read standard input twice");
|
fatal ("cannot read standard input twice");
|
|
|
base_dir = NULL;
|
base_dir = NULL;
|
read_rtx_filename = in_fname = "<stdin>";
|
read_rtx_filename = in_fname = "<stdin>";
|
read_rtx_lineno = 1;
|
read_rtx_lineno = 1;
|
input_file = stdin;
|
input_file = stdin;
|
already_read_stdin = true;
|
already_read_stdin = true;
|
|
|
while (read_rtx (input_file, &desc, &lineno))
|
while (read_rtx (input_file, &desc, &lineno))
|
process_rtx (desc, lineno);
|
process_rtx (desc, lineno);
|
fclose (input_file);
|
fclose (input_file);
|
continue;
|
continue;
|
}
|
}
|
else if (argv[i][1] == '-' && argv[i][2] == '\0')
|
else if (argv[i][1] == '-' && argv[i][2] == '\0')
|
{
|
{
|
/* No further arguments are to be treated as options. */
|
/* No further arguments are to be treated as options. */
|
no_more_options = true;
|
no_more_options = true;
|
continue;
|
continue;
|
}
|
}
|
else if (!no_more_options)
|
else if (!no_more_options)
|
continue;
|
continue;
|
}
|
}
|
|
|
/* If we get here we are looking at a non-option argument, i.e.
|
/* If we get here we are looking at a non-option argument, i.e.
|
a file to be processed. */
|
a file to be processed. */
|
|
|
in_fname = argv[i];
|
in_fname = argv[i];
|
lastsl = strrchr (in_fname, '/');
|
lastsl = strrchr (in_fname, '/');
|
if (lastsl != NULL)
|
if (lastsl != NULL)
|
base_dir = save_string (in_fname, lastsl - in_fname + 1 );
|
base_dir = save_string (in_fname, lastsl - in_fname + 1 );
|
else
|
else
|
base_dir = NULL;
|
base_dir = NULL;
|
|
|
read_rtx_filename = in_fname;
|
read_rtx_filename = in_fname;
|
read_rtx_lineno = 1;
|
read_rtx_lineno = 1;
|
input_file = fopen (in_fname, "r");
|
input_file = fopen (in_fname, "r");
|
if (input_file == 0)
|
if (input_file == 0)
|
{
|
{
|
perror (in_fname);
|
perror (in_fname);
|
return FATAL_EXIT_CODE;
|
return FATAL_EXIT_CODE;
|
}
|
}
|
|
|
while (read_rtx (input_file, &desc, &lineno))
|
while (read_rtx (input_file, &desc, &lineno))
|
process_rtx (desc, lineno);
|
process_rtx (desc, lineno);
|
fclose (input_file);
|
fclose (input_file);
|
}
|
}
|
|
|
/* If we get to this point without having seen any files to process,
|
/* If we get to this point without having seen any files to process,
|
read standard input now. */
|
read standard input now. */
|
if (!in_fname)
|
if (!in_fname)
|
{
|
{
|
base_dir = NULL;
|
base_dir = NULL;
|
read_rtx_filename = in_fname = "<stdin>";
|
read_rtx_filename = in_fname = "<stdin>";
|
read_rtx_lineno = 1;
|
read_rtx_lineno = 1;
|
input_file = stdin;
|
input_file = stdin;
|
|
|
while (read_rtx (input_file, &desc, &lineno))
|
while (read_rtx (input_file, &desc, &lineno))
|
process_rtx (desc, lineno);
|
process_rtx (desc, lineno);
|
fclose (input_file);
|
fclose (input_file);
|
}
|
}
|
|
|
/* Process define_cond_exec patterns. */
|
/* Process define_cond_exec patterns. */
|
if (define_cond_exec_queue != NULL)
|
if (define_cond_exec_queue != NULL)
|
process_define_cond_exec ();
|
process_define_cond_exec ();
|
|
|
return errors ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE;
|
return errors ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE;
|
}
|
}
|
|
|
/* Programs that don't have their own options can use this entry point
|
/* Programs that don't have their own options can use this entry point
|
instead. */
|
instead. */
|
int
|
int
|
init_md_reader_args (int argc, char **argv)
|
init_md_reader_args (int argc, char **argv)
|
{
|
{
|
return init_md_reader_args_cb (argc, argv, 0);
|
return init_md_reader_args_cb (argc, argv, 0);
|
}
|
}
|
|
|
/* The entry point for reading a single rtx from an md file. */
|
/* The entry point for reading a single rtx from an md file. */
|
|
|
rtx
|
rtx
|
read_md_rtx (int *lineno, int *seqnr)
|
read_md_rtx (int *lineno, int *seqnr)
|
{
|
{
|
struct queue_elem **queue, *elem;
|
struct queue_elem **queue, *elem;
|
rtx desc;
|
rtx desc;
|
|
|
discard:
|
discard:
|
|
|
/* Read all patterns from a given queue before moving on to the next. */
|
/* Read all patterns from a given queue before moving on to the next. */
|
if (define_attr_queue != NULL)
|
if (define_attr_queue != NULL)
|
queue = &define_attr_queue;
|
queue = &define_attr_queue;
|
else if (define_pred_queue != NULL)
|
else if (define_pred_queue != NULL)
|
queue = &define_pred_queue;
|
queue = &define_pred_queue;
|
else if (define_insn_queue != NULL)
|
else if (define_insn_queue != NULL)
|
queue = &define_insn_queue;
|
queue = &define_insn_queue;
|
else if (other_queue != NULL)
|
else if (other_queue != NULL)
|
queue = &other_queue;
|
queue = &other_queue;
|
else
|
else
|
return NULL_RTX;
|
return NULL_RTX;
|
|
|
elem = *queue;
|
elem = *queue;
|
*queue = elem->next;
|
*queue = elem->next;
|
desc = elem->data;
|
desc = elem->data;
|
read_rtx_filename = elem->filename;
|
read_rtx_filename = elem->filename;
|
*lineno = elem->lineno;
|
*lineno = elem->lineno;
|
*seqnr = sequence_num;
|
*seqnr = sequence_num;
|
|
|
free (elem);
|
free (elem);
|
|
|
/* Discard insn patterns which we know can never match (because
|
/* Discard insn patterns which we know can never match (because
|
their C test is provably always false). If insn_elision is
|
their C test is provably always false). If insn_elision is
|
false, our caller needs to see all the patterns. Note that the
|
false, our caller needs to see all the patterns. Note that the
|
elided patterns are never counted by the sequence numbering; it
|
elided patterns are never counted by the sequence numbering; it
|
it is the caller's responsibility, when insn_elision is false, not
|
it is the caller's responsibility, when insn_elision is false, not
|
to use elided pattern numbers for anything. */
|
to use elided pattern numbers for anything. */
|
switch (GET_CODE (desc))
|
switch (GET_CODE (desc))
|
{
|
{
|
case DEFINE_INSN:
|
case DEFINE_INSN:
|
case DEFINE_EXPAND:
|
case DEFINE_EXPAND:
|
if (maybe_eval_c_test (XSTR (desc, 2)) != 0)
|
if (maybe_eval_c_test (XSTR (desc, 2)) != 0)
|
sequence_num++;
|
sequence_num++;
|
else if (insn_elision)
|
else if (insn_elision)
|
goto discard;
|
goto discard;
|
|
|
/* *seqnr is used here so the name table will match caller's
|
/* *seqnr is used here so the name table will match caller's
|
idea of insn numbering, whether or not elision is active. */
|
idea of insn numbering, whether or not elision is active. */
|
record_insn_name (*seqnr, XSTR (desc, 0));
|
record_insn_name (*seqnr, XSTR (desc, 0));
|
break;
|
break;
|
|
|
case DEFINE_SPLIT:
|
case DEFINE_SPLIT:
|
case DEFINE_PEEPHOLE:
|
case DEFINE_PEEPHOLE:
|
case DEFINE_PEEPHOLE2:
|
case DEFINE_PEEPHOLE2:
|
if (maybe_eval_c_test (XSTR (desc, 1)) != 0)
|
if (maybe_eval_c_test (XSTR (desc, 1)) != 0)
|
sequence_num++;
|
sequence_num++;
|
else if (insn_elision)
|
else if (insn_elision)
|
goto discard;
|
goto discard;
|
break;
|
break;
|
|
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
return desc;
|
return desc;
|
}
|
}
|
|
|
/* Helper functions for insn elision. */
|
/* Helper functions for insn elision. */
|
|
|
/* Compute a hash function of a c_test structure, which is keyed
|
/* Compute a hash function of a c_test structure, which is keyed
|
by its ->expr field. */
|
by its ->expr field. */
|
hashval_t
|
hashval_t
|
hash_c_test (const void *x)
|
hash_c_test (const void *x)
|
{
|
{
|
const struct c_test *a = (const struct c_test *) x;
|
const struct c_test *a = (const struct c_test *) x;
|
const unsigned char *base, *s = (const unsigned char *) a->expr;
|
const unsigned char *base, *s = (const unsigned char *) a->expr;
|
hashval_t hash;
|
hashval_t hash;
|
unsigned char c;
|
unsigned char c;
|
unsigned int len;
|
unsigned int len;
|
|
|
base = s;
|
base = s;
|
hash = 0;
|
hash = 0;
|
|
|
while ((c = *s++) != '\0')
|
while ((c = *s++) != '\0')
|
{
|
{
|
hash += c + (c << 17);
|
hash += c + (c << 17);
|
hash ^= hash >> 2;
|
hash ^= hash >> 2;
|
}
|
}
|
|
|
len = s - base;
|
len = s - base;
|
hash += len + (len << 17);
|
hash += len + (len << 17);
|
hash ^= hash >> 2;
|
hash ^= hash >> 2;
|
|
|
return hash;
|
return hash;
|
}
|
}
|
|
|
/* Compare two c_test expression structures. */
|
/* Compare two c_test expression structures. */
|
int
|
int
|
cmp_c_test (const void *x, const void *y)
|
cmp_c_test (const void *x, const void *y)
|
{
|
{
|
const struct c_test *a = (const struct c_test *) x;
|
const struct c_test *a = (const struct c_test *) x;
|
const struct c_test *b = (const struct c_test *) y;
|
const struct c_test *b = (const struct c_test *) y;
|
|
|
return !strcmp (a->expr, b->expr);
|
return !strcmp (a->expr, b->expr);
|
}
|
}
|
|
|
/* Given a string representing a C test expression, look it up in the
|
/* Given a string representing a C test expression, look it up in the
|
condition_table and report whether or not its value is known
|
condition_table and report whether or not its value is known
|
at compile time. Returns a tristate: 1 for known true, 0 for
|
at compile time. Returns a tristate: 1 for known true, 0 for
|
known false, -1 for unknown. */
|
known false, -1 for unknown. */
|
int
|
int
|
maybe_eval_c_test (const char *expr)
|
maybe_eval_c_test (const char *expr)
|
{
|
{
|
const struct c_test *test;
|
const struct c_test *test;
|
struct c_test dummy;
|
struct c_test dummy;
|
|
|
if (expr[0] == 0)
|
if (expr[0] == 0)
|
return 1;
|
return 1;
|
|
|
dummy.expr = expr;
|
dummy.expr = expr;
|
test = (const struct c_test *)htab_find (condition_table, &dummy);
|
test = (const struct c_test *)htab_find (condition_table, &dummy);
|
if (!test)
|
if (!test)
|
return -1;
|
return -1;
|
return test->value;
|
return test->value;
|
}
|
}
|
|
|
/* Record the C test expression EXPR in the condition_table, with
|
/* Record the C test expression EXPR in the condition_table, with
|
value VAL. Duplicates clobber previous entries. */
|
value VAL. Duplicates clobber previous entries. */
|
|
|
void
|
void
|
add_c_test (const char *expr, int value)
|
add_c_test (const char *expr, int value)
|
{
|
{
|
struct c_test *test;
|
struct c_test *test;
|
|
|
if (expr[0] == 0)
|
if (expr[0] == 0)
|
return;
|
return;
|
|
|
test = XNEW (struct c_test);
|
test = XNEW (struct c_test);
|
test->expr = expr;
|
test->expr = expr;
|
test->value = value;
|
test->value = value;
|
|
|
*(htab_find_slot (condition_table, test, INSERT)) = test;
|
*(htab_find_slot (condition_table, test, INSERT)) = test;
|
}
|
}
|
|
|
/* For every C test, call CALLBACK with two arguments: a pointer to
|
/* For every C test, call CALLBACK with two arguments: a pointer to
|
the condition structure and INFO. Stops when CALLBACK returns zero. */
|
the condition structure and INFO. Stops when CALLBACK returns zero. */
|
void
|
void
|
traverse_c_tests (htab_trav callback, void *info)
|
traverse_c_tests (htab_trav callback, void *info)
|
{
|
{
|
if (condition_table)
|
if (condition_table)
|
htab_traverse (condition_table, callback, info);
|
htab_traverse (condition_table, callback, info);
|
}
|
}
|
|
|
|
|
/* Given a string, return the number of comma-separated elements in it.
|
/* Given a string, return the number of comma-separated elements in it.
|
Return 0 for the null string. */
|
Return 0 for the null string. */
|
int
|
int
|
n_comma_elts (const char *s)
|
n_comma_elts (const char *s)
|
{
|
{
|
int n;
|
int n;
|
|
|
if (*s == '\0')
|
if (*s == '\0')
|
return 0;
|
return 0;
|
|
|
for (n = 1; *s; s++)
|
for (n = 1; *s; s++)
|
if (*s == ',')
|
if (*s == ',')
|
n++;
|
n++;
|
|
|
return n;
|
return n;
|
}
|
}
|
|
|
/* Given a pointer to a (char *), return a pointer to the beginning of the
|
/* Given a pointer to a (char *), return a pointer to the beginning of the
|
next comma-separated element in the string. Advance the pointer given
|
next comma-separated element in the string. Advance the pointer given
|
to the end of that element. Return NULL if at end of string. Caller
|
to the end of that element. Return NULL if at end of string. Caller
|
is responsible for copying the string if necessary. White space between
|
is responsible for copying the string if necessary. White space between
|
a comma and an element is ignored. */
|
a comma and an element is ignored. */
|
|
|
const char *
|
const char *
|
scan_comma_elt (const char **pstr)
|
scan_comma_elt (const char **pstr)
|
{
|
{
|
const char *start;
|
const char *start;
|
const char *p = *pstr;
|
const char *p = *pstr;
|
|
|
if (*p == ',')
|
if (*p == ',')
|
p++;
|
p++;
|
while (ISSPACE(*p))
|
while (ISSPACE(*p))
|
p++;
|
p++;
|
|
|
if (*p == '\0')
|
if (*p == '\0')
|
return NULL;
|
return NULL;
|
|
|
start = p;
|
start = p;
|
|
|
while (*p != ',' && *p != '\0')
|
while (*p != ',' && *p != '\0')
|
p++;
|
p++;
|
|
|
*pstr = p;
|
*pstr = p;
|
return start;
|
return start;
|
}
|
}
|
|
|
/* Helper functions for define_predicate and define_special_predicate
|
/* Helper functions for define_predicate and define_special_predicate
|
processing. Shared between genrecog.c and genpreds.c. */
|
processing. Shared between genrecog.c and genpreds.c. */
|
|
|
static htab_t predicate_table;
|
static htab_t predicate_table;
|
struct pred_data *first_predicate;
|
struct pred_data *first_predicate;
|
static struct pred_data **last_predicate = &first_predicate;
|
static struct pred_data **last_predicate = &first_predicate;
|
|
|
static hashval_t
|
static hashval_t
|
hash_struct_pred_data (const void *ptr)
|
hash_struct_pred_data (const void *ptr)
|
{
|
{
|
return htab_hash_string (((const struct pred_data *)ptr)->name);
|
return htab_hash_string (((const struct pred_data *)ptr)->name);
|
}
|
}
|
|
|
static int
|
static int
|
eq_struct_pred_data (const void *a, const void *b)
|
eq_struct_pred_data (const void *a, const void *b)
|
{
|
{
|
return !strcmp (((const struct pred_data *)a)->name,
|
return !strcmp (((const struct pred_data *)a)->name,
|
((const struct pred_data *)b)->name);
|
((const struct pred_data *)b)->name);
|
}
|
}
|
|
|
struct pred_data *
|
struct pred_data *
|
lookup_predicate (const char *name)
|
lookup_predicate (const char *name)
|
{
|
{
|
struct pred_data key;
|
struct pred_data key;
|
key.name = name;
|
key.name = name;
|
return (struct pred_data *) htab_find (predicate_table, &key);
|
return (struct pred_data *) htab_find (predicate_table, &key);
|
}
|
}
|
|
|
void
|
void
|
add_predicate (struct pred_data *pred)
|
add_predicate (struct pred_data *pred)
|
{
|
{
|
void **slot = htab_find_slot (predicate_table, pred, INSERT);
|
void **slot = htab_find_slot (predicate_table, pred, INSERT);
|
if (*slot)
|
if (*slot)
|
{
|
{
|
error ("duplicate predicate definition for '%s'", pred->name);
|
error ("duplicate predicate definition for '%s'", pred->name);
|
return;
|
return;
|
}
|
}
|
*slot = pred;
|
*slot = pred;
|
*last_predicate = pred;
|
*last_predicate = pred;
|
last_predicate = &pred->next;
|
last_predicate = &pred->next;
|
}
|
}
|
|
|
/* This array gives the initial content of the predicate table. It
|
/* This array gives the initial content of the predicate table. It
|
has entries for all predicates defined in recog.c. */
|
has entries for all predicates defined in recog.c. */
|
|
|
struct std_pred_table
|
struct std_pred_table
|
{
|
{
|
const char *name;
|
const char *name;
|
bool special;
|
bool special;
|
RTX_CODE codes[NUM_RTX_CODE];
|
RTX_CODE codes[NUM_RTX_CODE];
|
};
|
};
|
|
|
static const struct std_pred_table std_preds[] = {
|
static const struct std_pred_table std_preds[] = {
|
{"general_operand", false, {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
|
{"general_operand", false, {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
|
LABEL_REF, SUBREG, REG, MEM }},
|
LABEL_REF, SUBREG, REG, MEM }},
|
{"address_operand", true, {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
|
{"address_operand", true, {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
|
LABEL_REF, SUBREG, REG, MEM,
|
LABEL_REF, SUBREG, REG, MEM,
|
PLUS, MINUS, MULT}},
|
PLUS, MINUS, MULT}},
|
{"register_operand", false, {SUBREG, REG}},
|
{"register_operand", false, {SUBREG, REG}},
|
{"pmode_register_operand", true, {SUBREG, REG}},
|
{"pmode_register_operand", true, {SUBREG, REG}},
|
{"scratch_operand", false, {SCRATCH, REG}},
|
{"scratch_operand", false, {SCRATCH, REG}},
|
{"immediate_operand", false, {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
|
{"immediate_operand", false, {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
|
LABEL_REF}},
|
LABEL_REF}},
|
{"const_int_operand", false, {CONST_INT}},
|
{"const_int_operand", false, {CONST_INT}},
|
{"const_double_operand", false, {CONST_INT, CONST_DOUBLE}},
|
{"const_double_operand", false, {CONST_INT, CONST_DOUBLE}},
|
{"nonimmediate_operand", false, {SUBREG, REG, MEM}},
|
{"nonimmediate_operand", false, {SUBREG, REG, MEM}},
|
{"nonmemory_operand", false, {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
|
{"nonmemory_operand", false, {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF,
|
LABEL_REF, SUBREG, REG}},
|
LABEL_REF, SUBREG, REG}},
|
{"push_operand", false, {MEM}},
|
{"push_operand", false, {MEM}},
|
{"pop_operand", false, {MEM}},
|
{"pop_operand", false, {MEM}},
|
{"memory_operand", false, {SUBREG, MEM}},
|
{"memory_operand", false, {SUBREG, MEM}},
|
{"indirect_operand", false, {SUBREG, MEM}},
|
{"indirect_operand", false, {SUBREG, MEM}},
|
{"comparison_operator", false, {EQ, NE, LE, LT, GE, GT, LEU, LTU, GEU, GTU,
|
{"comparison_operator", false, {EQ, NE, LE, LT, GE, GT, LEU, LTU, GEU, GTU,
|
UNORDERED, ORDERED, UNEQ, UNGE, UNGT, UNLE,
|
UNORDERED, ORDERED, UNEQ, UNGE, UNGT, UNLE,
|
UNLT, LTGT}}
|
UNLT, LTGT}}
|
};
|
};
|
#define NUM_KNOWN_STD_PREDS ARRAY_SIZE (std_preds)
|
#define NUM_KNOWN_STD_PREDS ARRAY_SIZE (std_preds)
|
|
|
/* Initialize the table of predicate definitions, starting with
|
/* Initialize the table of predicate definitions, starting with
|
the information we have on generic predicates. */
|
the information we have on generic predicates. */
|
|
|
static void
|
static void
|
init_predicate_table (void)
|
init_predicate_table (void)
|
{
|
{
|
size_t i, j;
|
size_t i, j;
|
struct pred_data *pred;
|
struct pred_data *pred;
|
|
|
predicate_table = htab_create_alloc (37, hash_struct_pred_data,
|
predicate_table = htab_create_alloc (37, hash_struct_pred_data,
|
eq_struct_pred_data, 0,
|
eq_struct_pred_data, 0,
|
xcalloc, free);
|
xcalloc, free);
|
|
|
for (i = 0; i < NUM_KNOWN_STD_PREDS; i++)
|
for (i = 0; i < NUM_KNOWN_STD_PREDS; i++)
|
{
|
{
|
pred = XCNEW (struct pred_data);
|
pred = XCNEW (struct pred_data);
|
pred->name = std_preds[i].name;
|
pred->name = std_preds[i].name;
|
pred->special = std_preds[i].special;
|
pred->special = std_preds[i].special;
|
|
|
for (j = 0; std_preds[i].codes[j] != 0; j++)
|
for (j = 0; std_preds[i].codes[j] != 0; j++)
|
{
|
{
|
enum rtx_code code = std_preds[i].codes[j];
|
enum rtx_code code = std_preds[i].codes[j];
|
|
|
pred->codes[code] = true;
|
pred->codes[code] = true;
|
if (GET_RTX_CLASS (code) != RTX_CONST_OBJ)
|
if (GET_RTX_CLASS (code) != RTX_CONST_OBJ)
|
pred->allows_non_const = true;
|
pred->allows_non_const = true;
|
if (code != REG
|
if (code != REG
|
&& code != SUBREG
|
&& code != SUBREG
|
&& code != MEM
|
&& code != MEM
|
&& code != CONCAT
|
&& code != CONCAT
|
&& code != PARALLEL
|
&& code != PARALLEL
|
&& code != STRICT_LOW_PART)
|
&& code != STRICT_LOW_PART)
|
pred->allows_non_lvalue = true;
|
pred->allows_non_lvalue = true;
|
}
|
}
|
if (j == 1)
|
if (j == 1)
|
pred->singleton = std_preds[i].codes[0];
|
pred->singleton = std_preds[i].codes[0];
|
|
|
add_predicate (pred);
|
add_predicate (pred);
|
}
|
}
|
}
|
}
|
|
|
/* These functions allow linkage with print-rtl.c. Also, some generators
|
/* These functions allow linkage with print-rtl.c. Also, some generators
|
like to annotate their output with insn names. */
|
like to annotate their output with insn names. */
|
|
|
/* Holds an array of names indexed by insn_code_number. */
|
/* Holds an array of names indexed by insn_code_number. */
|
static char **insn_name_ptr = 0;
|
static char **insn_name_ptr = 0;
|
static int insn_name_ptr_size = 0;
|
static int insn_name_ptr_size = 0;
|
|
|
const char *
|
const char *
|
get_insn_name (int code)
|
get_insn_name (int code)
|
{
|
{
|
if (code < insn_name_ptr_size)
|
if (code < insn_name_ptr_size)
|
return insn_name_ptr[code];
|
return insn_name_ptr[code];
|
else
|
else
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
static void
|
static void
|
record_insn_name (int code, const char *name)
|
record_insn_name (int code, const char *name)
|
{
|
{
|
static const char *last_real_name = "insn";
|
static const char *last_real_name = "insn";
|
static int last_real_code = 0;
|
static int last_real_code = 0;
|
char *new;
|
char *new;
|
|
|
if (insn_name_ptr_size <= code)
|
if (insn_name_ptr_size <= code)
|
{
|
{
|
int new_size;
|
int new_size;
|
new_size = (insn_name_ptr_size ? insn_name_ptr_size * 2 : 512);
|
new_size = (insn_name_ptr_size ? insn_name_ptr_size * 2 : 512);
|
insn_name_ptr = xrealloc (insn_name_ptr, sizeof(char *) * new_size);
|
insn_name_ptr = xrealloc (insn_name_ptr, sizeof(char *) * new_size);
|
memset (insn_name_ptr + insn_name_ptr_size, 0,
|
memset (insn_name_ptr + insn_name_ptr_size, 0,
|
sizeof(char *) * (new_size - insn_name_ptr_size));
|
sizeof(char *) * (new_size - insn_name_ptr_size));
|
insn_name_ptr_size = new_size;
|
insn_name_ptr_size = new_size;
|
}
|
}
|
|
|
if (!name || name[0] == '\0')
|
if (!name || name[0] == '\0')
|
{
|
{
|
new = xmalloc (strlen (last_real_name) + 10);
|
new = xmalloc (strlen (last_real_name) + 10);
|
sprintf (new, "%s+%d", last_real_name, code - last_real_code);
|
sprintf (new, "%s+%d", last_real_name, code - last_real_code);
|
}
|
}
|
else
|
else
|
{
|
{
|
last_real_name = new = xstrdup (name);
|
last_real_name = new = xstrdup (name);
|
last_real_code = code;
|
last_real_code = code;
|
}
|
}
|
|
|
insn_name_ptr[code] = new;
|
insn_name_ptr[code] = new;
|
}
|
}
|
|
|
