/* Declarations for interface to insn recognizer and insn-output.c.
- Copyright (C) 1987, 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004,
+ 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-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.
+GCC 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 3, 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.
+GCC 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, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-#include "gansidecl.h"
-
-extern void init_recog PROTO((void));
-extern void init_recog_no_volatile PROTO((void));
-extern int recog_memoized PROTO((rtx));
-extern int check_asm_operands PROTO((rtx));
-extern int validate_change PROTO((rtx, rtx *, rtx, int));
-extern int apply_change_group PROTO((void));
-extern int num_validated_changes PROTO((void));
-extern void cancel_changes PROTO((int));
-extern int constrain_operands PROTO((int, int));
-extern int memory_address_p PROTO((enum machine_mode, rtx));
-extern int strict_memory_address_p PROTO((enum machine_mode, rtx));
-extern int validate_replace_rtx PROTO((rtx, rtx, rtx));
-extern int reg_fits_class_p PROTO((rtx, enum reg_class, int,
- enum machine_mode));
-extern rtx *find_single_use PROTO((rtx, rtx, rtx *));
-
-extern int general_operand PROTO((rtx, enum machine_mode));
-extern int address_operand PROTO((rtx, enum machine_mode));
-extern int register_operand PROTO((rtx, enum machine_mode));
-extern int scratch_operand PROTO((rtx, enum machine_mode));
-extern int immediate_operand PROTO((rtx, enum machine_mode));
-extern int const_int_operand PROTO((rtx, enum machine_mode));
-extern int cosnt_double_operand PROTO((rtx, enum machine_mode));
-extern int nonimmediate_operand PROTO((rtx, enum machine_mode));
-extern int nonmemory_operand PROTO((rtx, enum machine_mode));
-extern int push_operand PROTO((rtx, enum machine_mode));
-extern int memory_operand PROTO((rtx, enum machine_mode));
-extern int indirect_operand PROTO((rtx, enum machine_mode));
-extern int mode_independent_operand PROTO((rtx, enum machine_mode));
-extern int comparison_operator PROTO((rtx, enum machine_mode));
-
-extern int offsettable_memref_p PROTO((rtx));
-extern int offsettable_nonstrict_memref_p PROTO((rtx));
-extern int offsettable_address_p PROTO((int, enum machine_mode, rtx));
-extern int mode_dependent_address_p PROTO((rtx));
-
-extern int recog PROTO((rtx, rtx, int *));
-extern void add_clobbers PROTO((rtx, int));
-extern void insn_extract PROTO((rtx));
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+/* Random number that should be large enough for all purposes. */
+#define MAX_RECOG_ALTERNATIVES 30
+
+/* Types of operands. */
+enum op_type {
+ OP_IN,
+ OP_OUT,
+ OP_INOUT
+};
+
+struct operand_alternative
+{
+ /* Pointer to the beginning of the constraint string for this alternative,
+ for easier access by alternative number. */
+ const char *constraint;
+
+ /* The register class valid for this alternative (possibly NO_REGS). */
+ enum reg_class cl;
+
+ /* "Badness" of this alternative, computed from number of '?' and '!'
+ characters in the constraint string. */
+ unsigned int reject;
+
+ /* -1 if no matching constraint was found, or an operand number. */
+ int matches;
+ /* The same information, but reversed: -1 if this operand is not
+ matched by any other, or the operand number of the operand that
+ matches this one. */
+ int matched;
+
+ /* Nonzero if '&' was found in the constraint string. */
+ unsigned int earlyclobber:1;
+ /* Nonzero if TARGET_MEM_CONSTRAINT was found in the constraint
+ string. */
+ unsigned int memory_ok:1;
+ /* Nonzero if 'o' was found in the constraint string. */
+ unsigned int offmem_ok:1;
+ /* Nonzero if 'V' was found in the constraint string. */
+ unsigned int nonoffmem_ok:1;
+ /* Nonzero if '<' was found in the constraint string. */
+ unsigned int decmem_ok:1;
+ /* Nonzero if '>' was found in the constraint string. */
+ unsigned int incmem_ok:1;
+ /* Nonzero if 'p' was found in the constraint string. */
+ unsigned int is_address:1;
+ /* Nonzero if 'X' was found in the constraint string, or if the constraint
+ string for this alternative was empty. */
+ unsigned int anything_ok:1;
+};
+
+
+extern void init_recog (void);
+extern void init_recog_no_volatile (void);
+extern int check_asm_operands (rtx);
+extern int asm_operand_ok (rtx, const char *, const char **);
+extern bool validate_change (rtx, rtx *, rtx, bool);
+extern bool validate_unshare_change (rtx, rtx *, rtx, bool);
+extern bool canonicalize_change_group (rtx insn, rtx x);
+extern int insn_invalid_p (rtx);
+extern int verify_changes (int);
+extern void confirm_change_group (void);
+extern int apply_change_group (void);
+extern int num_validated_changes (void);
+extern void cancel_changes (int);
+extern int constrain_operands (int);
+extern int constrain_operands_cached (int);
+extern int memory_address_addr_space_p (enum machine_mode, rtx, addr_space_t);
+#define memory_address_p(mode,addr) \
+ memory_address_addr_space_p ((mode), (addr), ADDR_SPACE_GENERIC)
+extern int strict_memory_address_addr_space_p (enum machine_mode, rtx,
+ addr_space_t);
+#define strict_memory_address_p(mode,addr) \
+ strict_memory_address_addr_space_p ((mode), (addr), ADDR_SPACE_GENERIC)
+extern int validate_replace_rtx_subexp (rtx, rtx, rtx, rtx *);
+extern int validate_replace_rtx (rtx, rtx, rtx);
+extern int validate_replace_rtx_part (rtx, rtx, rtx *, rtx);
+extern int validate_replace_rtx_part_nosimplify (rtx, rtx, rtx *, rtx);
+extern void validate_replace_rtx_group (rtx, rtx, rtx);
+extern void validate_replace_src_group (rtx, rtx, rtx);
+extern bool validate_simplify_insn (rtx insn);
+extern int num_changes_pending (void);
+#ifdef HAVE_cc0
+extern int next_insn_tests_no_inequality (rtx);
+#endif
+extern int reg_fits_class_p (rtx, enum reg_class, int, enum machine_mode);
+
+extern int offsettable_memref_p (rtx);
+extern int offsettable_nonstrict_memref_p (rtx);
+extern int offsettable_address_addr_space_p (int, enum machine_mode, rtx,
+ addr_space_t);
+#define offsettable_address_p(strict,mode,addr) \
+ offsettable_address_addr_space_p ((strict), (mode), (addr), \
+ ADDR_SPACE_GENERIC)
+extern int mode_dependent_address_p (rtx);
+
+extern int recog (rtx, rtx, int *);
+#ifndef GENERATOR_FILE
+static inline int recog_memoized (rtx insn);
+#endif
+extern void add_clobbers (rtx, int);
+extern int added_clobbers_hard_reg_p (int);
+extern void insn_extract (rtx);
+extern void extract_insn (rtx);
+extern void extract_constrain_insn_cached (rtx);
+extern void extract_insn_cached (rtx);
+extern void preprocess_constraints (void);
+extern rtx peep2_next_insn (int);
+extern int peep2_regno_dead_p (int, int);
+extern int peep2_reg_dead_p (int, rtx);
+#ifdef CLEAR_HARD_REG_SET
+extern rtx peep2_find_free_register (int, int, const char *,
+ enum machine_mode, HARD_REG_SET *);
+#endif
+extern rtx peephole2_insns (rtx, rtx, int *);
+
+extern int store_data_bypass_p (rtx, rtx);
+extern int if_test_bypass_p (rtx, rtx);
+
+#ifndef GENERATOR_FILE
+/* Try recognizing the instruction INSN,
+ and return the code number that results.
+ Remember the code so that repeated calls do not
+ need to spend the time for actual rerecognition.
+
+ This function is the normal interface to instruction recognition.
+ The automatically-generated function `recog' is normally called
+ through this one. */
+
+static inline int
+recog_memoized (rtx insn)
+{
+ if (INSN_CODE (insn) < 0)
+ INSN_CODE (insn) = recog (PATTERN (insn), insn, 0);
+ return INSN_CODE (insn);
+}
+#endif
+
+/* Skip chars until the next ',' or the end of the string. This is
+ useful to skip alternatives in a constraint string. */
+static inline const char *
+skip_alternative (const char *p)
+{
+ const char *r = p;
+ while (*r != '\0' && *r != ',')
+ r++;
+ if (*r == ',')
+ r++;
+ return r;
+}
/* Nonzero means volatile operands are recognized. */
extern int volatile_ok;
-/* The following vectors hold the results from insn_extract. */
+/* Set by constrain_operands to the number of the alternative that
+ matched. */
+extern int which_alternative;
-/* Indexed by N, gives value of operand N. */
-extern rtx recog_operand[];
+/* The following vectors hold the results from insn_extract. */
-/* Indexed by N, gives location where operand N was found. */
-extern rtx *recog_operand_loc[];
+struct recog_data
+{
+ /* It is very tempting to make the 5 operand related arrays into a
+ structure and index on that. However, to be source compatible
+ with all of the existing md file insn constraints and output
+ templates, we need `operand' as a flat array. Without that
+ member, making an array for the rest seems pointless. */
-/* 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[];
+ /* Gives value of operand N. */
+ rtx operand[MAX_RECOG_OPERANDS];
-/* Indexed by N, gives the operand number that was duplicated in the
- Nth duplicate-appearance of an operand. */
-extern char recog_dup_num[];
+ /* Gives location where operand N was found. */
+ rtx *operand_loc[MAX_RECOG_OPERANDS];
-/* Access the output function for CODE. */
+ /* Gives the constraint string for operand N. */
+ const char *constraints[MAX_RECOG_OPERANDS];
-#define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)])
+ /* Gives the mode of operand N. */
+ enum machine_mode operand_mode[MAX_RECOG_OPERANDS];
-/* Tables defined in insn-output.c that give information about
- each insn-code value. */
+ /* Gives the type (in, out, inout) for operand N. */
+ enum op_type operand_type[MAX_RECOG_OPERANDS];
-/* These are vectors indexed by insn-code. Details in genoutput.c. */
+ /* Gives location where the Nth duplicate-appearance of an operand
+ was found. This is something that matched MATCH_DUP. */
+ rtx *dup_loc[MAX_DUP_OPERANDS];
-extern char *const insn_template[];
+ /* Gives the operand number that was duplicated in the Nth
+ duplicate-appearance of an operand. */
+ char dup_num[MAX_DUP_OPERANDS];
-extern char *(*const insn_outfun[]) ();
+ /* ??? Note that these are `char' instead of `unsigned char' to (try to)
+ avoid certain lossage from K&R C, wherein `unsigned char' default
+ promotes to `unsigned int' instead of `int' as in ISO C. As of 1999,
+ the most common places to bootstrap from K&R C are SunOS and HPUX,
+ both of which have signed characters by default. The only other
+ supported natives that have both K&R C and unsigned characters are
+ ROMP and Irix 3, and neither have been seen for a while, but do
+ continue to consider unsignedness when performing arithmetic inside
+ a comparison. */
-extern const int insn_n_operands[];
+ /* The number of operands of the insn. */
+ char n_operands;
-extern const int insn_n_dups[];
+ /* The number of MATCH_DUPs in the insn. */
+ char n_dups;
-/* Indexed by insn code number, gives # of constraint alternatives. */
+ /* The number of alternatives in the constraints for the insn. */
+ char n_alternatives;
-extern const int insn_n_alternatives[];
+ /* Specifies whether an insn alternative is enabled using the
+ `enabled' attribute in the insn pattern definition. For back
+ ends not using the `enabled' attribute the array fields are
+ always set to `true' in expand_insn. */
+ bool alternative_enabled_p [MAX_RECOG_ALTERNATIVES];
-/* These are two-dimensional arrays indexed first by the insn-code
- and second by the operand number. Details in genoutput.c. */
+ /* In case we are caching, hold insn data was generated for. */
+ rtx insn;
+};
-#ifdef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
-extern char *const insn_operand_constraint[][MAX_RECOG_OPERANDS];
-#endif
+extern struct recog_data recog_data;
-#ifndef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
-extern const char insn_operand_address_p[][MAX_RECOG_OPERANDS];
-#endif
+/* Contains a vector of operand_alternative structures for every operand.
+ Set up by preprocess_constraints. */
+extern struct operand_alternative recog_op_alt[MAX_RECOG_OPERANDS][MAX_RECOG_ALTERNATIVES];
-extern const enum machine_mode insn_operand_mode[][MAX_RECOG_OPERANDS];
+/* A table defined in insn-output.c that give information about
+ each insn-code value. */
-extern const char insn_operand_strict_low[][MAX_RECOG_OPERANDS];
+typedef int (*insn_operand_predicate_fn) (rtx, enum machine_mode);
+typedef const char * (*insn_output_fn) (rtx *, rtx);
+typedef rtx (*insn_gen_fn) (rtx, ...);
+
+struct insn_operand_data
+{
+ const insn_operand_predicate_fn predicate;
+
+ const char *const constraint;
+
+ ENUM_BITFIELD(machine_mode) const mode : 16;
+
+ const char strict_low;
+
+ const char eliminable;
+};
+
+/* Legal values for insn_data.output_format. Indicate what type of data
+ is stored in insn_data.output. */
+#define INSN_OUTPUT_FORMAT_NONE 0 /* abort */
+#define INSN_OUTPUT_FORMAT_SINGLE 1 /* const char * */
+#define INSN_OUTPUT_FORMAT_MULTI 2 /* const char * const * */
+#define INSN_OUTPUT_FORMAT_FUNCTION 3 /* const char * (*)(...) */
+
+struct insn_data
+{
+ const char *const name;
+#if HAVE_DESIGNATED_INITIALIZERS
+ union {
+ const char *single;
+ const char *const *multi;
+ insn_output_fn function;
+ } output;
+#else
+ struct {
+ const char *single;
+ const char *const *multi;
+ insn_output_fn function;
+ } output;
+#endif
+ const insn_gen_fn genfun;
+ const struct insn_operand_data *const operand;
-extern int (*const insn_operand_predicate[][MAX_RECOG_OPERANDS]) ();
+ const char n_operands;
+ const char n_dups;
+ const char n_alternatives;
+ const char output_format;
+};
-extern char * insn_name[];
+extern const struct insn_data insn_data[];
+extern int peep2_current_count;
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