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Annotation of gcc/recog.h, revision 1.1

1.1     ! root        1: /* Declarations for interface to insn recognizer and insn-output.c.
        !             2:    Copyright (C) 1987 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU CC.
        !             5: 
        !             6: GNU CC is free software; you can redistribute it and/or modify
        !             7: it under the terms of the GNU General Public License as published by
        !             8: the Free Software Foundation; either version 2, or (at your option)
        !             9: any later version.
        !            10: 
        !            11: GNU CC is distributed in the hope that it will be useful,
        !            12: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            14: GNU General Public License for more details.
        !            15: 
        !            16: You should have received a copy of the GNU General Public License
        !            17: along with GNU CC; see the file COPYING.  If not, write to
        !            18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            19: 
        !            20: /* Recognize an insn and return its insn-code,
        !            21:    which is the sequence number of the DEFINE_INSN that it matches.
        !            22:    If the insn does not match, return -1.  */
        !            23: 
        !            24: extern int recog_memoized ();
        !            25: 
        !            26: /* Determine whether a proposed change to an insn or MEM will make it
        !            27:    invalid.  Make the change if not.  */
        !            28: 
        !            29: extern int validate_change ();
        !            30: 
        !            31: /* Apply a group of changes if valid.  */
        !            32: 
        !            33: extern int apply_change_group ();
        !            34: 
        !            35: /* Return the number of changes so far in the current group.   */
        !            36: 
        !            37: extern int num_validated_changes ();
        !            38: 
        !            39: /* Retract some changes.  */
        !            40: 
        !            41: extern void cancel_changes ();
        !            42: 
        !            43: /* Nonzero means volatile operands are recognized.  */
        !            44: 
        !            45: extern int volatile_ok;
        !            46: 
        !            47: /* Extract the operands from an insn that has been recognized.  */
        !            48: 
        !            49: extern void insn_extract ();
        !            50: 
        !            51: /* The following vectors hold the results from insn_extract.  */
        !            52: 
        !            53: /* Indexed by N, gives value of operand N.  */
        !            54: extern rtx recog_operand[];
        !            55: 
        !            56: /* Indexed by N, gives location where operand N was found.  */
        !            57: extern rtx *recog_operand_loc[];
        !            58: 
        !            59: /* Indexed by N, gives location where the Nth duplicate-appearance of
        !            60:    an operand was found.  This is something that matched MATCH_DUP.  */
        !            61: extern rtx *recog_dup_loc[];
        !            62: 
        !            63: /* Indexed by N, gives the operand number that was duplicated in the
        !            64:    Nth duplicate-appearance of an operand.  */
        !            65: extern char recog_dup_num[];
        !            66: 
        !            67: #ifndef __STDC__
        !            68: #ifndef const
        !            69: #define const
        !            70: #endif
        !            71: #endif
        !            72: 
        !            73: /* Access the output function for CODE.  */
        !            74: 
        !            75: #define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)])
        !            76: 
        !            77: /* Tables defined in insn-output.c that give information about
        !            78:    each insn-code value.  */
        !            79: 
        !            80: /* These are vectors indexed by insn-code.  Details in genoutput.c.  */
        !            81: 
        !            82: extern char *const insn_template[];
        !            83: 
        !            84: extern char *(*const insn_outfun[]) ();
        !            85: 
        !            86: extern const int insn_n_operands[];
        !            87: 
        !            88: extern const int insn_n_dups[];
        !            89: 
        !            90: /* Indexed by insn code number, gives # of constraint alternatives.  */
        !            91: 
        !            92: extern const int insn_n_alternatives[];
        !            93: 
        !            94: /* These are two-dimensional arrays indexed first by the insn-code
        !            95:    and second by the operand number.  Details in genoutput.c.  */
        !            96: 
        !            97: #ifdef REGISTER_CONSTRAINTS  /* Avoid undef sym in certain broken linkers.  */
        !            98: extern char *const insn_operand_constraint[][MAX_RECOG_OPERANDS];
        !            99: #endif
        !           100: 
        !           101: #ifndef REGISTER_CONSTRAINTS  /* Avoid undef sym in certain broken linkers.  */
        !           102: extern const char insn_operand_address_p[][MAX_RECOG_OPERANDS];
        !           103: #endif
        !           104: 
        !           105: extern const enum machine_mode insn_operand_mode[][MAX_RECOG_OPERANDS];
        !           106: 
        !           107: extern const char insn_operand_strict_low[][MAX_RECOG_OPERANDS];
        !           108: 
        !           109: extern int (*const insn_operand_predicate[][MAX_RECOG_OPERANDS]) ();
        !           110: 
        !           111: extern char * insn_name[];

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