1 /* Declarations for interface to insn recognizer and insn-output.c.
2 Copyright (C) 1987 Free Software Foundation, Inc.
4 This file is part of GNU CC.
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)
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.
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. */
20 /* Add prototype support. */
22 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
23 #define PROTO(ARGS) ARGS
25 #define PROTO(ARGS) ()
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. */
33 extern int recog_memoized
PROTO((rtx
));
35 /* Determine whether a proposed change to an insn or MEM will make it
36 invalid. Make the change if not. */
38 extern int validate_change
PROTO((rtx
, rtx
*, rtx
, int));
40 /* Apply a group of changes if valid. */
42 extern int apply_change_group
PROTO((void));
44 /* Return the number of changes so far in the current group. */
46 extern int num_validated_changes
PROTO((void));
48 /* Retract some changes. */
50 extern void cancel_changes
PROTO((int));
52 /* Nonzero means volatile operands are recognized. */
54 extern int volatile_ok
;
56 /* Extract the operands from an insn that has been recognized. */
58 extern void insn_extract
PROTO((rtx
));
60 /* The following vectors hold the results from insn_extract. */
62 /* Indexed by N, gives value of operand N. */
63 extern rtx recog_operand
[];
65 /* Indexed by N, gives location where operand N was found. */
66 extern rtx
*recog_operand_loc
[];
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
[];
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
[];
82 /* Access the output function for CODE. */
84 #define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)])
86 /* Tables defined in insn-output.c that give information about
87 each insn-code value. */
89 /* These are vectors indexed by insn-code. Details in genoutput.c. */
91 extern char *const insn_template
[];
93 extern char *(*const insn_outfun
[]) ();
95 extern const int insn_n_operands
[];
97 extern const int insn_n_dups
[];
99 /* Indexed by insn code number, gives # of constraint alternatives. */
101 extern const int insn_n_alternatives
[];
103 /* These are two-dimensional arrays indexed first by the insn-code
104 and second by the operand number. Details in genoutput.c. */
106 #ifdef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
107 extern char *const insn_operand_constraint
[][MAX_RECOG_OPERANDS
];
110 #ifndef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
111 extern const char insn_operand_address_p
[][MAX_RECOG_OPERANDS
];
114 extern const enum machine_mode insn_operand_mode
[][MAX_RECOG_OPERANDS
];
116 extern const char insn_operand_strict_low
[][MAX_RECOG_OPERANDS
];
118 extern int (*const insn_operand_predicate
[][MAX_RECOG_OPERANDS
]) ();
120 extern char * insn_name
[];