gcc/recog.h

   1 /* Declarations for interface to insn recognizer and insn-output.c.
   2    Copyright (C) 1987, 1996, 1997 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU CC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 #include "gansidecl.h"
  22
  23 extern void init_recog                  PROTO((void));
  24 extern void init_recog_no_volatile      PROTO((void));
  25 extern int recog_memoized               PROTO((rtx));
  26 extern int check_asm_operands           PROTO((rtx));
  27 extern int validate_change              PROTO((rtx, rtx *, rtx, int));
  28 extern int apply_change_group           PROTO((void));
  29 extern int num_validated_changes        PROTO((void));
  30 extern void cancel_changes              PROTO((int));
  31 extern int constrain_operands           PROTO((int, int));
  32 extern int memory_address_p             PROTO((enum machine_mode, rtx));
  33 extern int strict_memory_address_p      PROTO((enum machine_mode, rtx));
  34 extern int validate_replace_rtx         PROTO((rtx, rtx, rtx));
  35 extern void validate_replace_rtx_group  PROTO((rtx, rtx, rtx));
  36 extern int validate_replace_src         PROTO((rtx, rtx, rtx));
  37 extern int reg_fits_class_p             PROTO((rtx, enum reg_class, int,
  38                                                enum machine_mode));
  39 extern rtx *find_single_use             PROTO((rtx, rtx, rtx *));
  40
  41 extern int general_operand              PROTO((rtx, enum machine_mode));
  42 extern int address_operand              PROTO((rtx, enum machine_mode));
  43 extern int register_operand             PROTO((rtx, enum machine_mode));
  44 extern int scratch_operand              PROTO((rtx, enum machine_mode));
  45 extern int immediate_operand            PROTO((rtx, enum machine_mode));
  46 extern int const_int_operand            PROTO((rtx, enum machine_mode));
  47 extern int cosnt_double_operand         PROTO((rtx, enum machine_mode));
  48 extern int nonimmediate_operand         PROTO((rtx, enum machine_mode));
  49 extern int nonmemory_operand            PROTO((rtx, enum machine_mode));
  50 extern int push_operand                 PROTO((rtx, enum machine_mode));
  51 extern int memory_operand               PROTO((rtx, enum machine_mode));
  52 extern int indirect_operand             PROTO((rtx, enum machine_mode));
  53 extern int mode_independent_operand     PROTO((rtx, enum machine_mode));
  54 extern int comparison_operator          PROTO((rtx, enum machine_mode));
  55
  56 extern int offsettable_memref_p         PROTO((rtx));
  57 extern int offsettable_nonstrict_memref_p       PROTO((rtx));
  58 extern int offsettable_address_p        PROTO((int, enum machine_mode, rtx));
  59 extern int mode_dependent_address_p     PROTO((rtx));
  60
  61 extern int recog                        PROTO((rtx, rtx, int *));
  62 extern void add_clobbers                PROTO((rtx, int));
  63 extern void insn_extract                PROTO((rtx));
  64
  65 /* Nonzero means volatile operands are recognized.  */
  66 extern int volatile_ok;
  67
  68 /* The following vectors hold the results from insn_extract.  */
  69
  70 /* Indexed by N, gives value of operand N.  */
  71 extern rtx recog_operand[];
  72
  73 /* Indexed by N, gives location where operand N was found.  */
  74 extern rtx *recog_operand_loc[];
  75
  76 /* Indexed by N, gives location where the Nth duplicate-appearance of
  77    an operand was found.  This is something that matched MATCH_DUP.  */
  78 extern rtx *recog_dup_loc[];
  79
  80 /* Indexed by N, gives the operand number that was duplicated in the
  81    Nth duplicate-appearance of an operand.  */
  82 extern char recog_dup_num[];
  83
  84 /* Access the output function for CODE.  */
  85
  86 #define OUT_FCN(CODE) (*insn_outfun[(int) (CODE)])
  87
  88 /* Tables defined in insn-output.c that give information about
  89    each insn-code value.  */
  90
  91 /* These are vectors indexed by insn-code.  Details in genoutput.c.  */
  92
  93 extern char *const insn_template[];
  94
  95 extern char *(*const insn_outfun[]) ();
  96
  97 extern const int insn_n_operands[];
  98
  99 extern const int insn_n_dups[];
 100
 101 /* Indexed by insn code number, gives # of constraint alternatives.  */
 102
 103 extern const int insn_n_alternatives[];
 104
 105 /* These are two-dimensional arrays indexed first by the insn-code
 106    and second by the operand number.  Details in genoutput.c.  */
 107
 108 #ifdef REGISTER_CONSTRAINTS  /* Avoid undef sym in certain broken linkers.  */
 109 extern char *const insn_operand_constraint[][MAX_RECOG_OPERANDS];
 110 #endif
 111
 112 #ifndef REGISTER_CONSTRAINTS  /* Avoid undef sym in certain broken linkers.  */
 113 extern const char insn_operand_address_p[][MAX_RECOG_OPERANDS];
 114 #endif
 115
 116 extern const enum machine_mode insn_operand_mode[][MAX_RECOG_OPERANDS];
 117
 118 extern const char insn_operand_strict_low[][MAX_RECOG_OPERANDS];
 119
 120 extern int (*const insn_operand_predicate[][MAX_RECOG_OPERANDS]) ();
 121
 122 extern char * insn_name[];