X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Frecog.h;h=e6222a50cd3cb146c217378a994793a5dd086fa8;hb=3081c7523eb89675f971474ce3eeb7db4accd263;hp=8fc2efb4772724f8baba3a9643a54288aa54112e;hpb=0799286bb5af2ddcd040b83c2fc547f24c91cf6c;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/recog.h b/gcc/recog.h index 8fc2efb4772..e6222a50cd3 100644 --- a/gcc/recog.h +++ b/gcc/recog.h @@ -1,120 +1,266 @@ /* Declarations for interface to insn recognizer and insn-output.c. - Copyright (C) 1987 Free Software Foundation, Inc. + Copyright (C) 1987, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005 + 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 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. +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, 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 +along with GCC; see the file COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. */ + +/* 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 'm' 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 *); +extern int validate_change (rtx, rtx *, rtx, int); +extern int insn_invalid_p (rtx); +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_p (enum machine_mode, rtx); +extern int strict_memory_address_p (enum machine_mode, rtx); +extern int validate_replace_rtx_subexp (rtx, rtx, rtx, rtx *); +extern int validate_replace_rtx (rtx, rtx, rtx); +extern void validate_replace_rtx_group (rtx, rtx, rtx); +extern void validate_replace_src_group (rtx, rtx, rtx); +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 rtx *find_single_use (rtx, rtx, rtx *); -/* 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 offsettable_memref_p (rtx); +extern int offsettable_nonstrict_memref_p (rtx); +extern int offsettable_address_p (int, enum machine_mode, rtx); +extern int mode_dependent_address_p (rtx); -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)); +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 void peephole2_optimize (FILE *); +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. (The only exception is in combine.c.) */ + +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 -/* Apply a group of changes if valid. */ +/* Nonzero means volatile operands are recognized. */ +extern int volatile_ok; -extern int apply_change_group PROTO((void)); +/* Set by constrain_operands to the number of the alternative that + matched. */ +extern int which_alternative; -/* Return the number of changes so far in the current group. */ +/* The following vectors hold the results from insn_extract. */ -extern int num_validated_changes PROTO((void)); +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. */ -/* Retract some changes. */ + /* Gives value of operand N. */ + rtx operand[MAX_RECOG_OPERANDS]; -extern void cancel_changes PROTO((int)); + /* Gives location where operand N was found. */ + rtx *operand_loc[MAX_RECOG_OPERANDS]; -/* Nonzero means volatile operands are recognized. */ + /* Gives the constraint string for operand N. */ + const char *constraints[MAX_RECOG_OPERANDS]; -extern int volatile_ok; + /* Gives the mode of operand N. */ + enum machine_mode operand_mode[MAX_RECOG_OPERANDS]; -/* Extract the operands from an insn that has been recognized. */ + /* Gives the type (in, out, inout) for operand N. */ + enum op_type operand_type[MAX_RECOG_OPERANDS]; -extern void insn_extract PROTO((rtx)); + /* 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]; -/* The following vectors hold the results from insn_extract. */ + /* Gives the operand number that was duplicated in the Nth + duplicate-appearance of an operand. */ + char dup_num[MAX_DUP_OPERANDS]; -/* Indexed by N, gives value of operand N. */ -extern rtx recog_operand[]; + /* ??? 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. */ -/* Indexed by N, gives location where operand N was found. */ -extern rtx *recog_operand_loc[]; + /* The number of operands of the insn. */ + char n_operands; -/* 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[]; + /* The number of MATCH_DUPs in the insn. */ + char n_dups; -/* Indexed by N, gives the operand number that was duplicated in the - Nth duplicate-appearance of an operand. */ -extern char recog_dup_num[]; + /* The number of alternatives in the constraints for the insn. */ + char n_alternatives; -#ifndef __STDC__ -#ifndef const -#define const -#endif -#endif + /* In case we are caching, hold insn data was generated for. */ + rtx insn; +}; -/* Access the output function for CODE. */ +extern struct recog_data recog_data; -#define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)]) +/* 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]; -/* Tables defined in insn-output.c that give information about +/* A table 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[]; +typedef int (*insn_operand_predicate_fn) (rtx, enum machine_mode); +typedef const char * (*insn_output_fn) (rtx *, rtx); +typedef rtx (*insn_gen_fn) (rtx, ...); -extern char *(*const insn_outfun[]) (); +struct insn_operand_data +{ + const insn_operand_predicate_fn predicate; -extern const int insn_n_operands[]; + const char *const constraint; -extern const int insn_n_dups[]; + ENUM_BITFIELD(machine_mode) const mode : 16; -/* Indexed by insn code number, gives # of constraint alternatives. */ + const char strict_low; -extern const int insn_n_alternatives[]; + const char eliminable; +}; -/* These are two-dimensional arrays indexed first by the insn-code - and second by the operand number. Details in genoutput.c. */ +/* 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 * (*)(...) */ -#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]; +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 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]) (); + 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[];