| 1 | /* Declarations for interface to insn recognizer and insn-output.c. |
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| 2 | Copyright (C) 1987 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This file is part of GNU CC. |
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| 5 | |
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| 6 | GNU CC is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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| 10 | |
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| 11 | GNU CC is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | GNU General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU General Public License |
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| 17 | along with GNU CC; see the file COPYING. If not, write to |
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| 18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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| 19 | Boston, MA 02111-1307, USA. */ |
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| 20 | |
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| 21 | /* Add prototype support. */ |
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| 22 | #ifndef PROTO |
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| 23 | #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__) |
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| 24 | #define PROTO(ARGS) ARGS |
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| 25 | #else |
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| 26 | #define PROTO(ARGS) () |
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| 27 | #endif |
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| 28 | #endif |
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| 29 | |
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| 30 | /* Recognize an insn and return its insn-code, |
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| 31 | which is the sequence number of the DEFINE_INSN that it matches. |
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| 32 | If the insn does not match, return -1. */ |
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| 33 | |
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| 34 | extern int recog_memoized PROTO((rtx)); |
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| 35 | |
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| 36 | /* Determine whether a proposed change to an insn or MEM will make it |
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| 37 | invalid. Make the change if not. */ |
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| 38 | |
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| 39 | extern int validate_change PROTO((rtx, rtx *, rtx, int)); |
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| 40 | |
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| 41 | /* Apply a group of changes if valid. */ |
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| 42 | |
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| 43 | extern int apply_change_group PROTO((void)); |
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| 44 | |
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| 45 | /* Return the number of changes so far in the current group. */ |
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| 46 | |
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| 47 | extern int num_validated_changes PROTO((void)); |
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| 48 | |
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| 49 | /* Retract some changes. */ |
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| 50 | |
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| 51 | extern void cancel_changes PROTO((int)); |
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| 52 | |
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| 53 | /* Nonzero means volatile operands are recognized. */ |
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| 54 | |
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| 55 | extern int volatile_ok; |
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| 56 | |
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| 57 | /* Extract the operands from an insn that has been recognized. */ |
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| 58 | |
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| 59 | extern void insn_extract PROTO((rtx)); |
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| 60 | |
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| 61 | /* The following vectors hold the results from insn_extract. */ |
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| 62 | |
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| 63 | /* Indexed by N, gives value of operand N. */ |
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| 64 | extern rtx recog_operand[]; |
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| 65 | |
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| 66 | /* Indexed by N, gives location where operand N was found. */ |
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| 67 | extern rtx *recog_operand_loc[]; |
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| 68 | |
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| 69 | /* Indexed by N, gives location where the Nth duplicate-appearance of |
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| 70 | an operand was found. This is something that matched MATCH_DUP. */ |
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| 71 | extern rtx *recog_dup_loc[]; |
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| 72 | |
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| 73 | /* Indexed by N, gives the operand number that was duplicated in the |
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| 74 | Nth duplicate-appearance of an operand. */ |
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| 75 | extern char recog_dup_num[]; |
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| 76 | |
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| 77 | #ifndef __STDC__ |
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| 78 | #ifndef const |
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| 79 | #define const |
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| 80 | #endif |
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| 81 | #endif |
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| 82 | |
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| 83 | /* Access the output function for CODE. */ |
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| 84 | |
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| 85 | #define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)]) |
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| 86 | |
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| 87 | /* Tables defined in insn-output.c that give information about |
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| 88 | each insn-code value. */ |
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| 89 | |
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| 90 | /* These are vectors indexed by insn-code. Details in genoutput.c. */ |
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| 91 | |
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| 92 | extern char *const insn_template[]; |
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| 93 | |
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| 94 | extern char *(*const insn_outfun[]) (); |
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| 95 | |
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| 96 | extern const int insn_n_operands[]; |
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| 97 | |
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| 98 | extern const int insn_n_dups[]; |
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| 99 | |
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| 100 | /* Indexed by insn code number, gives # of constraint alternatives. */ |
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| 101 | |
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| 102 | extern const int insn_n_alternatives[]; |
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| 103 | |
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| 104 | /* These are two-dimensional arrays indexed first by the insn-code |
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| 105 | and second by the operand number. Details in genoutput.c. */ |
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| 106 | |
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| 107 | #ifdef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */ |
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| 108 | extern char *const insn_operand_constraint[][MAX_RECOG_OPERANDS]; |
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| 109 | #endif |
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| 110 | |
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| 111 | #ifndef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */ |
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| 112 | extern const char insn_operand_address_p[][MAX_RECOG_OPERANDS]; |
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| 113 | #endif |
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| 114 | |
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| 115 | extern const enum machine_mode insn_operand_mode[][MAX_RECOG_OPERANDS]; |
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| 116 | |
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| 117 | extern const char insn_operand_strict_low[][MAX_RECOG_OPERANDS]; |
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| 118 | |
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| 119 | extern int (*const insn_operand_predicate[][MAX_RECOG_OPERANDS]) (); |
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| 120 | |
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| 121 | extern char * insn_name[]; |
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