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209 lines
7.6 KiB
C
209 lines
7.6 KiB
C
/* Declarations for interface to insn recognizer and insn-output.c.
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Copyright (C) 1987, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Random number that should be large enough for all purposes. */
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#define MAX_RECOG_ALTERNATIVES 30
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/* Types of operands. */
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enum op_type {
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OP_IN,
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OP_OUT,
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OP_INOUT
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};
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struct operand_alternative
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{
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/* Pointer to the beginning of the constraint string for this alternative,
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for easier access by alternative number. */
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const char *constraint;
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/* The register class valid for this alternative (possibly NO_REGS). */
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enum reg_class class;
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/* "Badness" of this alternative, computed from number of '?' and '!'
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characters in the constraint string. */
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unsigned int reject;
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/* -1 if no matching constraint was found, or an operand number. */
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int matches;
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/* The same information, but reversed: -1 if this operand is not
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matched by any other, or the operand number of the operand that
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matches this one. */
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int matched;
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/* Nonzero if '&' was found in the constraint string. */
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unsigned int earlyclobber:1;
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/* Nonzero if 'm' was found in the constraint string. */
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unsigned int memory_ok:1;
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/* Nonzero if 'o' was found in the constraint string. */
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unsigned int offmem_ok:1;
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/* Nonzero if 'V' was found in the constraint string. */
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unsigned int nonoffmem_ok:1;
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/* Nonzero if '<' was found in the constraint string. */
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unsigned int decmem_ok:1;
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/* Nonzero if '>' was found in the constraint string. */
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unsigned int incmem_ok:1;
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/* Nonzero if 'X' was found in the constraint string, or if the constraint
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string for this alternative was empty. */
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unsigned int anything_ok:1;
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};
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extern void init_recog PROTO((void));
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extern void init_recog_no_volatile PROTO((void));
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extern int recog_memoized PROTO((rtx));
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extern int check_asm_operands PROTO((rtx));
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extern int asm_operand_ok PROTO((rtx, const char *));
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extern int validate_change PROTO((rtx, rtx *, rtx, int));
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extern int apply_change_group PROTO((void));
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extern int num_validated_changes PROTO((void));
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extern void cancel_changes PROTO((int));
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extern int constrain_operands PROTO((int));
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extern int memory_address_p PROTO((enum machine_mode, rtx));
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extern int strict_memory_address_p PROTO((enum machine_mode, rtx));
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extern int validate_replace_rtx PROTO((rtx, rtx, rtx));
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extern void validate_replace_rtx_group PROTO((rtx, rtx, rtx));
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extern int validate_replace_src PROTO((rtx, rtx, rtx));
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#ifdef HAVE_cc0
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extern int next_insn_tests_no_inequality PROTO ((rtx));
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#endif
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extern int reg_fits_class_p PROTO((rtx, enum reg_class, int,
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enum machine_mode));
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extern rtx *find_single_use PROTO((rtx, rtx, rtx *));
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extern int general_operand PROTO((rtx, enum machine_mode));
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extern int address_operand PROTO((rtx, enum machine_mode));
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extern int register_operand PROTO((rtx, enum machine_mode));
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extern int scratch_operand PROTO((rtx, enum machine_mode));
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extern int immediate_operand PROTO((rtx, enum machine_mode));
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extern int const_int_operand PROTO((rtx, enum machine_mode));
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extern int const_double_operand PROTO((rtx, enum machine_mode));
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extern int nonimmediate_operand PROTO((rtx, enum machine_mode));
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extern int nonmemory_operand PROTO((rtx, enum machine_mode));
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extern int push_operand PROTO((rtx, enum machine_mode));
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extern int pop_operand PROTO((rtx, enum machine_mode));
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extern int memory_operand PROTO((rtx, enum machine_mode));
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extern int indirect_operand PROTO((rtx, enum machine_mode));
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extern int mode_independent_operand PROTO((rtx, enum machine_mode));
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extern int comparison_operator PROTO((rtx, enum machine_mode));
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extern int offsettable_memref_p PROTO((rtx));
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extern int offsettable_nonstrict_memref_p PROTO((rtx));
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extern int offsettable_address_p PROTO((int, enum machine_mode, rtx));
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extern int mode_dependent_address_p PROTO((rtx));
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extern int recog PROTO((rtx, rtx, int *));
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extern void add_clobbers PROTO((rtx, int));
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extern void insn_extract PROTO((rtx));
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extern void extract_insn PROTO((rtx));
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extern void preprocess_constraints PROTO((void));
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/* Nonzero means volatile operands are recognized. */
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extern int volatile_ok;
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/* Set by constrain_operands to the number of the alternative that
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matched. */
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extern int which_alternative;
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/* The following vectors hold the results from insn_extract. */
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/* Indexed by N, gives value of operand N. */
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extern rtx recog_operand[];
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/* Indexed by N, gives location where operand N was found. */
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extern rtx *recog_operand_loc[];
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/* Indexed by N, gives location where the Nth duplicate-appearance of
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an operand was found. This is something that matched MATCH_DUP. */
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extern rtx *recog_dup_loc[];
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/* Indexed by N, gives the operand number that was duplicated in the
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Nth duplicate-appearance of an operand. */
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extern char recog_dup_num[];
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/* The next variables are set up by extract_insn. */
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/* The number of operands of the insn. */
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extern int recog_n_operands;
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/* The number of MATCH_DUPs in the insn. */
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extern int recog_n_dups;
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/* The number of alternatives in the constraints for the insn. */
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extern int recog_n_alternatives;
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/* Indexed by N, gives the mode of operand N. */
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extern enum machine_mode recog_operand_mode[];
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/* Indexed by N, gives the constraint string for operand N. */
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extern const char *recog_constraints[];
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/* Indexed by N, gives the type (in, out, inout) for operand N. */
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extern enum op_type recog_op_type[];
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#ifndef REGISTER_CONSTRAINTS
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/* Indexed by N, nonzero if operand N should be an address. */
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extern char recog_operand_address_p[];
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#endif
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/* Contains a vector of operand_alternative structures for every operand.
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Set up by preprocess_constraints. */
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extern struct operand_alternative recog_op_alt[MAX_RECOG_OPERANDS][MAX_RECOG_ALTERNATIVES];
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/* Access the output function for CODE. */
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#define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)])
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/* Tables defined in insn-output.c that give information about
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each insn-code value. */
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/* These are vectors indexed by insn-code. Details in genoutput.c. */
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extern const char *const insn_template[];
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extern const char *(*const insn_outfun[]) PROTO ((rtx *, rtx));
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extern const int insn_n_operands[];
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extern const int insn_n_dups[];
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/* Indexed by insn code number, gives # of constraint alternatives. */
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extern const int insn_n_alternatives[];
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/* These are two-dimensional arrays indexed first by the insn-code
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and second by the operand number. Details in genoutput.c. */
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#ifdef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
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extern const char *const insn_operand_constraint[][MAX_RECOG_OPERANDS];
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#endif
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#ifndef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */
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extern const char insn_operand_address_p[][MAX_RECOG_OPERANDS];
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#endif
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extern const enum machine_mode insn_operand_mode[][MAX_RECOG_OPERANDS];
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extern const char insn_operand_strict_low[][MAX_RECOG_OPERANDS];
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extern int (*const insn_operand_predicate[][MAX_RECOG_OPERANDS]) PROTO ((rtx, enum machine_mode));
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extern const char * insn_name[];
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