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/* Declarations for interface to insn recognizer and insn-output.c.
Copyright (C) 1987 Free Software Foundation, Inc.
This file is part of GNU CC.
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.
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.
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Add prototype support. */
#ifndef PROTO
#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
#define PROTO(ARGS) ARGS
#else
#define PROTO(ARGS) ()
#endif
#endif
/* Recognize an insn and return its insn-code,
which is the sequence number of the DEFINE_INSN that it matches.
If the insn does not match, return -1. */
extern int recog_memoized PROTO((rtx));
/* Determine whether a proposed change to an insn or MEM will make it
invalid. Make the change if not. */
extern int validate_change PROTO((rtx, rtx *, rtx, int));
/* Apply a group of changes if valid. */
extern int apply_change_group PROTO((void));
/* Return the number of changes so far in the current group. */
extern int num_validated_changes PROTO((void));
/* Retract some changes. */
extern void cancel_changes PROTO((int));
/* Nonzero means volatile operands are recognized. */
extern int volatile_ok;
/* Extract the operands from an insn that has been recognized. */
extern void insn_extract PROTO((rtx));
/* The following vectors hold the results from insn_extract. */
/* Indexed by N, gives value of operand N. */
extern rtx recog_operand[];
/* Indexed by N, gives location where operand N was found. */
extern rtx *recog_operand_loc[];
/* Indexed by N, gives location where the Nth duplicate-appearance of
an operand was found. This is something that matched MATCH_DUP. */
extern rtx *recog_dup_loc[];
/* Indexed by N, gives the operand number that was duplicated in the
Nth duplicate-appearance of an operand. */
extern char recog_dup_num[];
#ifndef __STDC__
#ifndef const
#define const
#endif
#endif
/* Access the output function for CODE. */
#define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)])
/* Tables defined in insn-output.c that give information about
each insn-code value. */
/* These are vectors indexed by insn-code. Details in genoutput.c. */
extern char *const insn_template[];
extern char *(*const insn_outfun[]) ();
extern const int insn_n_operands[];
extern const int insn_n_dups[];
/* Indexed by insn code number, gives # of constraint alternatives. */
extern const int insn_n_alternatives[];
/* These are two-dimensional arrays indexed first by the insn-code
and second by the operand number. Details in genoutput.c. */
#ifdef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
extern char *const insn_operand_constraint[][MAX_RECOG_OPERANDS];
#endif
#ifndef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
extern const char insn_operand_address_p[][MAX_RECOG_OPERANDS];
#endif
extern const enum machine_mode insn_operand_mode[][MAX_RECOG_OPERANDS];
extern const char insn_operand_strict_low[][MAX_RECOG_OPERANDS];
extern int (*const insn_operand_predicate[][MAX_RECOG_OPERANDS]) ();
extern char * insn_name[];
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