1 /* Declarations for interface to insn recognizer and insn-output.c.
2 Copyright (C) 1987, 1996, 1997 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, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
21 /* Types of operands. */
28 extern void init_recog PROTO((void));
29 extern void init_recog_no_volatile PROTO((void));
30 extern int recog_memoized PROTO((rtx));
31 extern int check_asm_operands PROTO((rtx));
32 extern int validate_change PROTO((rtx, rtx *, rtx, int));
33 extern int apply_change_group PROTO((void));
34 extern int num_validated_changes PROTO((void));
35 extern void cancel_changes PROTO((int));
36 extern int constrain_operands PROTO((int));
37 extern int memory_address_p PROTO((enum machine_mode, rtx));
38 extern int strict_memory_address_p PROTO((enum machine_mode, rtx));
39 extern int validate_replace_rtx PROTO((rtx, rtx, rtx));
40 extern void validate_replace_rtx_group PROTO((rtx, rtx, rtx));
41 extern int validate_replace_src PROTO((rtx, rtx, rtx));
42 extern int reg_fits_class_p PROTO((rtx, enum reg_class, int,
44 extern rtx *find_single_use PROTO((rtx, rtx, rtx *));
46 extern int general_operand PROTO((rtx, enum machine_mode));
47 extern int address_operand PROTO((rtx, enum machine_mode));
48 extern int register_operand PROTO((rtx, enum machine_mode));
49 extern int scratch_operand PROTO((rtx, enum machine_mode));
50 extern int immediate_operand PROTO((rtx, enum machine_mode));
51 extern int const_int_operand PROTO((rtx, enum machine_mode));
52 extern int const_double_operand PROTO((rtx, enum machine_mode));
53 extern int nonimmediate_operand PROTO((rtx, enum machine_mode));
54 extern int nonmemory_operand PROTO((rtx, enum machine_mode));
55 extern int push_operand PROTO((rtx, enum machine_mode));
56 extern int memory_operand PROTO((rtx, enum machine_mode));
57 extern int indirect_operand PROTO((rtx, enum machine_mode));
58 extern int mode_independent_operand PROTO((rtx, enum machine_mode));
59 extern int comparison_operator PROTO((rtx, enum machine_mode));
61 extern int offsettable_memref_p PROTO((rtx));
62 extern int offsettable_nonstrict_memref_p PROTO((rtx));
63 extern int offsettable_address_p PROTO((int, enum machine_mode, rtx));
64 extern int mode_dependent_address_p PROTO((rtx));
66 extern int recog PROTO((rtx, rtx, int *));
67 extern void add_clobbers PROTO((rtx, int));
68 extern void insn_extract PROTO((rtx));
69 extern void extract_insn PROTO((rtx));
71 /* Nonzero means volatile operands are recognized. */
72 extern int volatile_ok;
74 /* Set by constrain_operands to the number of the alternative that
76 extern int which_alternative;
78 /* The following vectors hold the results from insn_extract. */
80 /* Indexed by N, gives value of operand N. */
81 extern rtx recog_operand[];
83 /* Indexed by N, gives location where operand N was found. */
84 extern rtx *recog_operand_loc[];
86 /* Indexed by N, gives location where the Nth duplicate-appearance of
87 an operand was found. This is something that matched MATCH_DUP. */
88 extern rtx *recog_dup_loc[];
90 /* Indexed by N, gives the operand number that was duplicated in the
91 Nth duplicate-appearance of an operand. */
92 extern char recog_dup_num[];
94 /* The next variables are set up by extract_insn. */
96 /* The number of operands of the insn. */
97 extern int recog_n_operands;
99 /* The number of MATCH_DUPs in the insn. */
100 extern int recog_n_dups;
102 /* The number of alternatives in the constraints for the insn. */
103 extern int recog_n_alternatives;
105 /* Indexed by N, gives the mode of operand N. */
106 extern enum machine_mode recog_operand_mode[];
108 /* Indexed by N, gives the constraint string for operand N. */
109 extern char *recog_constraints[];
111 /* Indexed by N, gives the type (in, out, inout) for operand N. */
112 extern enum op_type recog_op_type[];
114 #ifndef REGISTER_CONSTRAINTS
115 /* Indexed by N, nonzero if operand N should be an address. */
116 extern char recog_operand_address_p[];
119 /* Access the output function for CODE. */
121 #define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)])
123 /* Tables defined in insn-output.c that give information about
124 each insn-code value. */
126 /* These are vectors indexed by insn-code. Details in genoutput.c. */
128 extern char *const insn_template[];
130 extern char *(*const insn_outfun[]) ();
132 extern const int insn_n_operands[];
134 extern const int insn_n_dups[];
136 /* Indexed by insn code number, gives # of constraint alternatives. */
138 extern const int insn_n_alternatives[];
140 /* These are two-dimensional arrays indexed first by the insn-code
141 and second by the operand number. Details in genoutput.c. */
143 #ifdef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
144 extern char *const insn_operand_constraint[][MAX_RECOG_OPERANDS];
147 #ifndef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
148 extern const char insn_operand_address_p[][MAX_RECOG_OPERANDS];
151 extern const enum machine_mode insn_operand_mode[][MAX_RECOG_OPERANDS];
153 extern const char insn_operand_strict_low[][MAX_RECOG_OPERANDS];
155 extern int (*const insn_operand_predicate[][MAX_RECOG_OPERANDS]) ();
157 extern char * insn_name[];