/* Support routines for the various generation passes.
- Copyright (C) 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2001, 2002, 2003, 2004
+ Free Software Foundation, Inc.
This file is part of GCC.
const char *filename;
int lineno;
struct queue_elem *next;
+ /* In a DEFINE_INSN that came from a DEFINE_INSN_AND_SPLIT, SPLIT
+ points to the generated DEFINE_SPLIT. */
+ struct queue_elem *split;
};
static struct queue_elem *define_attr_queue;
static struct queue_elem *other_queue;
static struct queue_elem **other_tail = &other_queue;
-static void queue_pattern PARAMS ((rtx, struct queue_elem ***,
- const char *, int));
+static struct queue_elem *queue_pattern (rtx, struct queue_elem ***,
+ const char *, int);
/* Current maximum length of directory names in the search path
for include files. (Altered as we get more of them.) */
struct file_name_list *first_bracket_include = 0;
struct file_name_list *last_dir_md_include = 0; /* Last in chain */
-static void remove_constraints PARAMS ((rtx));
-static void process_rtx PARAMS ((rtx, int));
-
-static int is_predicable PARAMS ((struct queue_elem *));
-static void identify_predicable_attribute PARAMS ((void));
-static int n_alternatives PARAMS ((const char *));
-static void collect_insn_data PARAMS ((rtx, int *, int *));
-static rtx alter_predicate_for_insn PARAMS ((rtx, int, int, int));
-static const char *alter_test_for_insn PARAMS ((struct queue_elem *,
- struct queue_elem *));
-static char *shift_output_template PARAMS ((char *, const char *, int));
-static const char *alter_output_for_insn PARAMS ((struct queue_elem *,
- struct queue_elem *,
- int, int));
-static void process_one_cond_exec PARAMS ((struct queue_elem *));
-static void process_define_cond_exec PARAMS ((void));
-static void process_include PARAMS ((rtx, int));
-static char *save_string PARAMS ((const char *, int));
+static void remove_constraints (rtx);
+static void process_rtx (rtx, int);
+
+static int is_predicable (struct queue_elem *);
+static void identify_predicable_attribute (void);
+static int n_alternatives (const char *);
+static void collect_insn_data (rtx, int *, int *);
+static rtx alter_predicate_for_insn (rtx, int, int, int);
+static const char *alter_test_for_insn (struct queue_elem *,
+ struct queue_elem *);
+static char *shift_output_template (char *, const char *, int);
+static const char *alter_output_for_insn (struct queue_elem *,
+ struct queue_elem *,
+ int, int);
+static void process_one_cond_exec (struct queue_elem *);
+static void process_define_cond_exec (void);
+static void process_include (rtx, int);
+static char *save_string (const char *, int);
\f
void
message_with_line (int lineno, const char *msg, ...)
{
va_list ap;
-
+
va_start (ap, msg);
fprintf (stderr, "%s:%d: ", read_rtx_filename, lineno);
the gensupport programs. */
rtx
-gen_rtx_CONST_INT (mode, arg)
- enum machine_mode mode ATTRIBUTE_UNUSED;
- HOST_WIDE_INT arg;
+gen_rtx_CONST_INT (enum machine_mode mode ATTRIBUTE_UNUSED,
+ HOST_WIDE_INT arg)
{
rtx rt = rtx_alloc (CONST_INT);
return rt;
}
\f
-/* Queue PATTERN on LIST_TAIL. */
+/* Queue PATTERN on LIST_TAIL. Return the address of the new queue
+ element. */
-static void
-queue_pattern (pattern, list_tail, filename, lineno)
- rtx pattern;
- struct queue_elem ***list_tail;
- const char *filename;
- int lineno;
+static struct queue_elem *
+queue_pattern (rtx pattern, struct queue_elem ***list_tail,
+ const char *filename, int lineno)
{
- struct queue_elem *e = (struct queue_elem *) xmalloc (sizeof (*e));
+ struct queue_elem *e = xmalloc (sizeof (*e));
e->data = pattern;
e->filename = filename;
e->lineno = lineno;
e->next = NULL;
+ e->split = NULL;
**list_tail = e;
*list_tail = &e->next;
+ return e;
}
/* Recursively remove constraints from an rtx. */
static void
-remove_constraints (part)
- rtx part;
+remove_constraints (rtx part)
{
int i, j;
const char *format_ptr;
}
}
-/* 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"). */
static void
-process_include (desc, lineno)
- rtx desc;
- int lineno;
+process_include (rtx desc, int lineno)
{
const char *filename = XSTR (desc, 0);
const char *old_filename;
FILE *input_file;
/* If specified file name is absolute, skip the include stack. */
- if (! IS_ABSOLUTE_PATHNAME (filename))
+ if (! IS_ABSOLUTE_PATH (filename))
{
struct file_name_list *stackp;
pathname = concat (stackp->fname, sep, filename, NULL);
input_file = fopen (pathname, "r");
- if (input_file != NULL)
+ if (input_file != NULL)
goto success;
free (pathname);
}
fclose (input_file);
}
-/* Process a top level rtx in some way, queueing as appropriate. */
+/* Process a top level rtx in some way, queuing as appropriate. */
static void
-process_rtx (desc, lineno)
- rtx desc;
- int lineno;
+process_rtx (rtx desc, int lineno)
{
switch (GET_CODE (desc))
{
rtx split;
rtvec attr;
int i;
+ struct queue_elem *insn_elem;
+ struct queue_elem *split_elem;
/* Create a split with values from the insn_and_split. */
split = rtx_alloc (DEFINE_SPLIT);
XVEC (desc, 4) = attr;
/* Queue them. */
- queue_pattern (desc, &define_insn_tail, read_rtx_filename, lineno);
- queue_pattern (split, &other_tail, read_rtx_filename, lineno);
+ insn_elem
+ = queue_pattern (desc, &define_insn_tail, read_rtx_filename,
+ lineno);
+ split_elem
+ = queue_pattern (split, &other_tail, read_rtx_filename, lineno);
+ insn_elem->split = split_elem;
break;
}
a DEFINE_INSN. */
static int
-is_predicable (elem)
- struct queue_elem *elem;
+is_predicable (struct queue_elem *elem)
{
rtvec vec = XVEC (elem->data, 4);
const char *value;
and its default. */
static void
-identify_predicable_attribute ()
+identify_predicable_attribute (void)
{
struct queue_elem *elem;
char *p_true, *p_false;
/* Return the number of alternatives in constraint S. */
static int
-n_alternatives (s)
- const char *s;
+n_alternatives (const char *s)
{
int n = 1;
operands. */
static void
-collect_insn_data (pattern, palt, pmax)
- rtx pattern;
- int *palt, *pmax;
+collect_insn_data (rtx pattern, int *palt, int *pmax)
{
const char *fmt;
enum rtx_code code;
case MATCH_OPERAND:
i = n_alternatives (XSTR (pattern, 2));
*palt = (i > *palt ? i : *palt);
- /* FALLTHRU */
+ /* Fall through. */
case MATCH_OPERATOR:
case MATCH_SCRATCH:
case MATCH_PARALLEL:
- case MATCH_INSN:
i = XINT (pattern, 0);
if (i > *pmax)
*pmax = i;
case 'V':
if (XVEC (pattern, i) == NULL)
break;
- /* FALLTHRU */
+ /* Fall through. */
case 'E':
for (j = XVECLEN (pattern, i) - 1; j >= 0; --j)
collect_insn_data (XVECEXP (pattern, i, j), palt, pmax);
}
static rtx
-alter_predicate_for_insn (pattern, alt, max_op, lineno)
- rtx pattern;
- int alt, max_op, lineno;
+alter_predicate_for_insn (rtx pattern, int alt, int max_op, int lineno)
{
const char *fmt;
enum rtx_code code;
{
size_t c_len = strlen (c);
size_t len = alt * (c_len + 1);
- char *new_c = (char *) xmalloc (len);
+ char *new_c = xmalloc (len);
memcpy (new_c, c, c_len);
for (i = 1; i < alt; ++i)
XSTR (pattern, 2) = new_c;
}
}
- /* FALLTHRU */
+ /* Fall through. */
case MATCH_OPERATOR:
case MATCH_SCRATCH:
case MATCH_PARALLEL:
- case MATCH_INSN:
XINT (pattern, 0) += max_op;
break;
}
static const char *
-alter_test_for_insn (ce_elem, insn_elem)
- struct queue_elem *ce_elem, *insn_elem;
+alter_test_for_insn (struct queue_elem *ce_elem,
+ struct queue_elem *insn_elem)
{
const char *ce_test, *insn_test;
adjusted string. */
static char *
-shift_output_template (new, old, disp)
- char *new;
- const char *old;
- int disp;
+shift_output_template (char *new, const char *old, int disp)
{
while (*old)
{
}
static const char *
-alter_output_for_insn (ce_elem, insn_elem, alt, max_op)
- struct queue_elem *ce_elem, *insn_elem;
- int alt, max_op;
+alter_output_for_insn (struct queue_elem *ce_elem,
+ struct queue_elem *insn_elem,
+ int alt, int max_op)
{
const char *ce_out, *insn_out;
char *new, *p;
/* Replicate insns as appropriate for the given DEFINE_COND_EXEC. */
static void
-process_one_cond_exec (ce_elem)
- struct queue_elem *ce_elem;
+process_one_cond_exec (struct queue_elem *ce_elem)
{
struct queue_elem *insn_elem;
for (insn_elem = define_insn_queue; insn_elem ; insn_elem = insn_elem->next)
{
int alternatives, max_operand;
- rtx pred, insn, pattern;
+ rtx pred, insn, pattern, split;
+ int i;
if (! is_predicable (insn_elem))
continue;
queue_pattern (insn, &other_tail, insn_elem->filename,
insn_elem->lineno);
+
+ if (!insn_elem->split)
+ continue;
+
+ /* If the original insn came from a define_insn_and_split,
+ generate a new split to handle the predicated insn. */
+ split = copy_rtx (insn_elem->split->data);
+ /* Predicate the pattern matched by the split. */
+ pattern = rtx_alloc (COND_EXEC);
+ XEXP (pattern, 0) = pred;
+ if (XVECLEN (split, 0) == 1)
+ {
+ XEXP (pattern, 1) = XVECEXP (split, 0, 0);
+ XVECEXP (split, 0, 0) = pattern;
+ PUT_NUM_ELEM (XVEC (split, 0), 1);
+ }
+ else
+ {
+ XEXP (pattern, 1) = rtx_alloc (PARALLEL);
+ XVEC (XEXP (pattern, 1), 0) = XVEC (split, 0);
+ XVEC (split, 0) = rtvec_alloc (1);
+ XVECEXP (split, 0, 0) = pattern;
+ }
+ /* Predicate all of the insns generated by the split. */
+ for (i = 0; i < XVECLEN (split, 2); i++)
+ {
+ pattern = rtx_alloc (COND_EXEC);
+ XEXP (pattern, 0) = pred;
+ XEXP (pattern, 1) = XVECEXP (split, 2, i);
+ XVECEXP (split, 2, i) = pattern;
+ }
+ /* Add the new split to the queue. */
+ queue_pattern (split, &other_tail, read_rtx_filename,
+ insn_elem->split->lineno);
}
}
patterns appropriately. */
static void
-process_define_cond_exec ()
+process_define_cond_exec (void)
{
struct queue_elem *elem;
}
static char *
-save_string (s, len)
- const char *s;
- int len;
+save_string (const char *s, int len)
{
- register char *result = xmalloc (len + 1);
+ char *result = xmalloc (len + 1);
memcpy (result, s, len);
result[len] = 0;
/* The entry point for initializing the reader. */
int
-init_md_reader_args (argc, argv)
- int argc;
- char **argv;
+init_md_reader_args (int argc, char **argv)
{
int i;
const char *in_fname;
{
struct file_name_list *dirtmp;
- dirtmp = (struct file_name_list *)
- xmalloc (sizeof (struct file_name_list));
+ dirtmp = xmalloc (sizeof (struct file_name_list));
dirtmp->next = 0; /* New one goes on the end */
if (first_dir_md_include == 0)
first_dir_md_include = dirtmp;
/* The entry point for initializing the reader. */
int
-init_md_reader (filename)
- const char *filename;
+init_md_reader (const char *filename)
{
FILE *input_file;
int c;
char *lastsl;
lastsl = strrchr (filename, '/');
- if (lastsl != NULL)
+ if (lastsl != NULL)
base_dir = save_string (filename, lastsl - filename + 1 );
read_rtx_filename = filename;
hash_c_test, cmp_c_test, NULL);
for (i = 0; i < n_insn_conditions; i++)
- *(htab_find_slot (condition_table, (PTR) &insn_conditions[i], INSERT))
- = (PTR) &insn_conditions[i];
+ *(htab_find_slot (condition_table, &insn_conditions[i], INSERT))
+ = (void *) &insn_conditions[i];
obstack_init (rtl_obstack);
errors = 0;
/* The entry point for reading a single rtx from an md file. */
rtx
-read_md_rtx (lineno, seqnr)
- int *lineno;
- int *seqnr;
+read_md_rtx (int *lineno, int *seqnr)
{
struct queue_elem **queue, *elem;
rtx desc;
/* Compute a hash function of a c_test structure, which is keyed
by its ->expr field. */
hashval_t
-hash_c_test (x)
- const PTR x;
+hash_c_test (const void *x)
{
const struct c_test *a = (const struct c_test *) x;
const unsigned char *base, *s = (const unsigned char *) a->expr;
/* Compare two c_test expression structures. */
int
-cmp_c_test (x, y)
- const PTR x;
- const PTR y;
+cmp_c_test (const void *x, const void *y)
{
const struct c_test *a = (const struct c_test *) x;
const struct c_test *b = (const struct c_test *) y;
at compile time. Returns a tristate: 1 for known true, 0 for
known false, -1 for unknown. */
int
-maybe_eval_c_test (expr)
- const char *expr;
+maybe_eval_c_test (const char *expr)
{
const struct c_test *test;
struct c_test dummy;
return -1;
dummy.expr = expr;
- test = (const struct c_test *) htab_find (condition_table, &dummy);
+ test = htab_find (condition_table, &dummy);
if (!test)
abort ();
/* Given a string, return the number of comma-separated elements in it.
Return 0 for the null string. */
int
-n_comma_elts (s)
- const char *s;
+n_comma_elts (const char *s)
{
int n;
a comma and an element is ignored. */
const char *
-scan_comma_elt (pstr)
- const char **pstr;
+scan_comma_elt (const char **pstr)
{
const char *start;
const char *p = *pstr;
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