diff options
Diffstat (limited to 'gcc/recog.h')
| -rw-r--r-- | gcc/recog.h | 102 |
1 files changed, 94 insertions, 8 deletions
diff --git a/gcc/recog.h b/gcc/recog.h index 980b76f70d7..79f22f9135a 100644 --- a/gcc/recog.h +++ b/gcc/recog.h @@ -1,5 +1,5 @@ /* 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 Free Software Foundation, Inc. This file is part of GNU CC. @@ -18,22 +18,72 @@ 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" +/* 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 class; + + /* "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 '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 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 asm_operand_ok PROTO((rtx, const char *)); 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 constrain_operands PROTO((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 void validate_replace_rtx_group PROTO((rtx, rtx, rtx)); extern int validate_replace_src PROTO((rtx, rtx, rtx)); +#ifdef HAVE_cc0 +extern int next_insn_tests_no_inequality PROTO ((rtx)); +#endif extern int reg_fits_class_p PROTO((rtx, enum reg_class, int, enum machine_mode)); extern rtx *find_single_use PROTO((rtx, rtx, rtx *)); @@ -44,10 +94,11 @@ 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 const_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 pop_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)); @@ -61,10 +112,16 @@ 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)); +extern void extract_insn PROTO((rtx)); +extern void preprocess_constraints PROTO((void)); /* Nonzero means volatile operands are recognized. */ extern int volatile_ok; +/* Set by constrain_operands to the number of the alternative that + matched. */ +extern int which_alternative; + /* The following vectors hold the results from insn_extract. */ /* Indexed by N, gives value of operand N. */ @@ -81,6 +138,35 @@ extern rtx *recog_dup_loc[]; Nth duplicate-appearance of an operand. */ extern char recog_dup_num[]; +/* The next variables are set up by extract_insn. */ + +/* The number of operands of the insn. */ +extern int recog_n_operands; + +/* The number of MATCH_DUPs in the insn. */ +extern int recog_n_dups; + +/* The number of alternatives in the constraints for the insn. */ +extern int recog_n_alternatives; + +/* Indexed by N, gives the mode of operand N. */ +extern enum machine_mode recog_operand_mode[]; + +/* Indexed by N, gives the constraint string for operand N. */ +extern const char *recog_constraints[]; + +/* Indexed by N, gives the type (in, out, inout) for operand N. */ +extern enum op_type recog_op_type[]; + +#ifndef REGISTER_CONSTRAINTS +/* Indexed by N, nonzero if operand N should be an address. */ +extern char recog_operand_address_p[]; +#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]; + /* Access the output function for CODE. */ #define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)]) @@ -90,9 +176,9 @@ extern char recog_dup_num[]; /* These are vectors indexed by insn-code. Details in genoutput.c. */ -extern char *const insn_template[]; +extern const char *const insn_template[]; -extern char *(*const insn_outfun[]) (); +extern const char *(*const insn_outfun[]) (); extern const int insn_n_operands[]; @@ -106,7 +192,7 @@ extern const int insn_n_alternatives[]; 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]; +extern const char *const insn_operand_constraint[][MAX_RECOG_OPERANDS]; #endif #ifndef REGISTER_CONSTRAINTS /* Avoid undef sym in certain broken linkers. */ @@ -119,4 +205,4 @@ extern const char insn_operand_strict_low[][MAX_RECOG_OPERANDS]; extern int (*const insn_operand_predicate[][MAX_RECOG_OPERANDS]) (); -extern char * insn_name[]; +extern const char * insn_name[]; |