Annotation of GNUtools/cc/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: /* Add prototype support.  */
                     21: #ifndef PROTO
                     22: #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
                     23: #define PROTO(ARGS) ARGS
                     24: #else
                     25: #define PROTO(ARGS) ()
                     26: #endif
                     27: #endif
                     28: 
                     29: /* Recognize an insn and return its insn-code,
                     30:    which is the sequence number of the DEFINE_INSN that it matches.
                     31:    If the insn does not match, return -1.  */
                     32: 
                     33: extern int recog_memoized PROTO((rtx));
                     34: 
                     35: /* Determine whether a proposed change to an insn or MEM will make it
                     36:    invalid.  Make the change if not.  */
                     37: 
                     38: extern int validate_change PROTO((rtx, rtx *, rtx, int));
                     39: 
                     40: /* Apply a group of changes if valid.  */
                     41: 
                     42: extern int apply_change_group PROTO((void));
                     43: 
                     44: /* Return the number of changes so far in the current group.   */
                     45: 
                     46: extern int num_validated_changes PROTO((void));
                     47: 
                     48: /* Retract some changes.  */
                     49: 
                     50: extern void cancel_changes PROTO((int));
                     51: 
                     52: /* Nonzero means volatile operands are recognized.  */
                     53: 
                     54: extern int volatile_ok;
                     55: 
                     56: /* Extract the operands from an insn that has been recognized.  */
                     57: 
                     58: extern void insn_extract PROTO((rtx));
                     59: 
                     60: /* The following vectors hold the results from insn_extract.  */
                     61: 
                     62: /* Indexed by N, gives value of operand N.  */
                     63: extern rtx recog_operand[];
                     64: 
                     65: /* Indexed by N, gives location where operand N was found.  */
                     66: extern rtx *recog_operand_loc[];
                     67: 
                     68: /* Indexed by N, gives location where the Nth duplicate-appearance of
                     69:    an operand was found.  This is something that matched MATCH_DUP.  */
                     70: extern rtx *recog_dup_loc[];
                     71: 
                     72: /* Indexed by N, gives the operand number that was duplicated in the
                     73:    Nth duplicate-appearance of an operand.  */
                     74: extern char recog_dup_num[];
                     75: 
                     76: #ifndef __STDC__
                     77: #ifndef const
                     78: #define const
                     79: #endif
                     80: #endif
                     81: 
                     82: /* Access the output function for CODE.  */
                     83: 
                     84: #define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)])
                     85: 
                     86: /* Tables defined in insn-output.c that give information about
                     87:    each insn-code value.  */
                     88: 
                     89: /* These are vectors indexed by insn-code.  Details in genoutput.c.  */
                     90: 
                     91: extern char *const insn_template[];
                     92: 
                     93: extern char *(*const insn_outfun[]) ();
                     94: 
                     95: extern const int insn_n_operands[];
                     96: 
                     97: extern const int insn_n_dups[];
                     98: 
                     99: /* Indexed by insn code number, gives # of constraint alternatives.  */
                    100: 
                    101: extern const int insn_n_alternatives[];
                    102: 
                    103: /* These are two-dimensional arrays indexed first by the insn-code
                    104:    and second by the operand number.  Details in genoutput.c.  */
                    105: 
                    106: #ifdef REGISTER_CONSTRAINTS  /* Avoid undef sym in certain broken linkers.  */
                    107: extern char *const insn_operand_constraint[][MAX_RECOG_OPERANDS];
                    108: #endif
                    109: 
                    110: #ifndef REGISTER_CONSTRAINTS  /* Avoid undef sym in certain broken linkers.  */
                    111: extern const char insn_operand_address_p[][MAX_RECOG_OPERANDS];
                    112: #endif
                    113: 
                    114: extern const enum machine_mode insn_operand_mode[][MAX_RECOG_OPERANDS];
                    115: 
                    116: extern const char insn_operand_strict_low[][MAX_RECOG_OPERANDS];
                    117: 
                    118: extern int (*const insn_operand_predicate[][MAX_RECOG_OPERANDS]) ();
                    119: 
                    120: extern char * insn_name[];

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