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/* Declarations for rtx-reader support for gen* routines.
Copyright (C) 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#ifndef GCC_GENSUPPORT_H
#define GCC_GENSUPPORT_H
struct obstack;
extern struct obstack *rtl_obstack;
extern const char *in_fname;
extern int init_md_reader_args_cb (int, char **, bool (*)(const char *));
extern int init_md_reader_args (int, char **);
extern rtx read_md_rtx (int *, int *);
extern void message_with_line (int, const char *, ...)
ATTRIBUTE_PRINTF_2;
/* Set this to 0 to disable automatic elision of insn patterns which
can never be used in this configuration. See genconditions.c.
Must be set before calling init_md_reader. */
extern int insn_elision;
/* If this is 1, the insn elision table doesn't even exist yet;
maybe_eval_c_test will always return -1. This is distinct from
insn_elision because genflags and gencodes need to see all the
patterns, but treat elided patterns differently. */
extern const int insn_elision_unavailable;
/* If the C test passed as the argument can be evaluated at compile
time, return its truth value; else return -1. The test must have
appeared somewhere in the machine description when genconditions
was run. */
extern int maybe_eval_c_test (const char *);
/* This table should not be accessed directly; use maybe_eval_c_test. */
struct c_test
{
const char *expr;
int value;
};
extern const struct c_test insn_conditions[];
extern const size_t n_insn_conditions;
#ifdef __HASHTAB_H__
extern hashval_t hash_c_test (const void *);
extern int cmp_c_test (const void *, const void *);
#endif
extern int n_comma_elts (const char *);
extern const char *scan_comma_elt (const char **);
/* Predicate handling: helper functions and data structures. */
struct pred_data
{
struct pred_data *next; /* for iterating over the set of all preds */
const char *name; /* predicate name */
bool special; /* special handling of modes? */
/* data used primarily by genpreds.c */
const char *c_block; /* C test block */
rtx exp; /* RTL test expression */
/* data used primarily by genrecog.c */
enum rtx_code singleton; /* if pred takes only one code, that code */
bool allows_non_lvalue; /* if pred allows non-lvalue expressions */
bool allows_non_const; /* if pred allows non-const expressions */
bool codes[NUM_RTX_CODE]; /* set of codes accepted */
};
extern struct pred_data *first_predicate;
extern struct pred_data *lookup_predicate (const char *);
extern void add_predicate (struct pred_data *);
#define FOR_ALL_PREDICATES(p) for (p = first_predicate; p; p = p->next)
/* This callback will be invoked whenever an rtl include directive is
processed. To be used for creation of the dependency file. */
extern void (*include_callback) (const char *);
#endif /* GCC_GENSUPPORT_H */
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