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+/* Declarations for interface to insn recognizer and insn-output.c.
+ Copyright (C) 1987 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING. If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* Add prototype support. */
+#ifndef PROTO
+#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
+#define PROTO(ARGS) ARGS
+#else
+#define PROTO(ARGS) ()
+#endif
+#endif
+
+/* Recognize an insn and return its insn-code,
+ which is the sequence number of the DEFINE_INSN that it matches.
+ If the insn does not match, return -1. */
+
+extern int recog_memoized PROTO((rtx));
+
+/* Determine whether a proposed change to an insn or MEM will make it
+ invalid. Make the change if not. */
+
+extern int validate_change PROTO((rtx, rtx *, rtx, int));
+
+/* Apply a group of changes if valid. */
+
+extern int apply_change_group PROTO((void));
+
+/* Return the number of changes so far in the current group. */
+
+extern int num_validated_changes PROTO((void));
+
+/* Retract some changes. */
+
+extern void cancel_changes PROTO((int));
+
+/* Nonzero means volatile operands are recognized. */
+
+extern int volatile_ok;
+
+/* Extract the operands from an insn that has been recognized. */
+
+extern void insn_extract PROTO((rtx));
+
+/* The following vectors hold the results from insn_extract. */
+
+/* Indexed by N, gives value of operand N. */
+extern rtx recog_operand[];
+
+/* Indexed by N, gives location where operand N was found. */
+extern rtx *recog_operand_loc[];
+
+/* Indexed by N, gives location where the Nth duplicate-appearance of
+ an operand was found. This is something that matched MATCH_DUP. */
+extern rtx *recog_dup_loc[];
+
+/* Indexed by N, gives the operand number that was duplicated in the
+ Nth duplicate-appearance of an operand. */
+extern char recog_dup_num[];
+
+#ifndef __STDC__
+#ifndef const
+#define const
+#endif
+#endif
+
+/* Access the output function for CODE. */
+
+#define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)])
+
+/* Tables defined in insn-output.c that give information about
+ each insn-code value. */
+
+/* These are vectors indexed by insn-code. Details in genoutput.c. */
+
+extern char *const insn_template[];
+
+extern char *(*const insn_outfun[]) ();
+
+extern const int insn_n_operands[];
+
+extern const int insn_n_dups[];
+
+/* Indexed by insn code number, gives # of constraint alternatives. */
+
+extern const int insn_n_alternatives[];
+
+/* These are two-dimensional arrays indexed first by the insn-code
+ and second by the operand number. Details in genoutput.c. */
+
+#ifdef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
+extern char *const insn_operand_constraint[][MAX_RECOG_OPERANDS];
+#endif
+
+#ifndef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
+extern const char insn_operand_address_p[][MAX_RECOG_OPERANDS];
+#endif
+
+extern const enum machine_mode insn_operand_mode[][MAX_RECOG_OPERANDS];
+
+extern const char insn_operand_strict_low[][MAX_RECOG_OPERANDS];
+
+extern int (*const insn_operand_predicate[][MAX_RECOG_OPERANDS]) ();
+
+extern char * insn_name[];
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