/* 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)
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. */
#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
/* 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. */
/* 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
[];
/* Access the output function for CODE. */
#define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)])
/* Tables defined in insn-output.c that give information about
/* 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
];
#ifndef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
extern const char insn_operand_address_p
[][MAX_RECOG_OPERANDS
];
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
[];