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Annotation of gcc/recog.h, revision 1.1.1.1

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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