1 /* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h. 2 Copyright (C) 1991, 1993, 1994, 1996, 1998, 1999, 2000, 2001 3 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it under 8 the terms of the GNU General Public License as published by the Free 9 Software Foundation; either version 2, or (at your option) any later 10 version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13 WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING. If not, write to the Free 19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 20 02111-1307, USA. */ 21 22 #ifndef HAVE_MACHINE_MODES 23 #define HAVE_MACHINE_MODES 24 25 /* Make an enum class that gives all the machine modes. */ 26 27 #define DEF_MACHMODE(SYM, NAME, TYPE, BITSIZE, SIZE, UNIT, WIDER, INNER) SYM, 28 29 enum machine_mode { 30 #include "machmode.def" 31 MAX_MACHINE_MODE }; 32 33 #undef DEF_MACHMODE 34 35 #ifndef NUM_MACHINE_MODES 36 #define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE 37 #endif 38 39 /* Get the name of mode MODE as a string. */ 40 41 extern const char * const mode_name[NUM_MACHINE_MODES]; 42 #define GET_MODE_NAME(MODE) (mode_name[(int) (MODE)]) 43 44 enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC, 45 MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, 46 MODE_VECTOR_INT, MODE_VECTOR_FLOAT, 47 MAX_MODE_CLASS}; 48 49 /* Get the general kind of object that mode MODE represents 50 (integer, floating, complex, etc.) */ 51 52 extern const enum mode_class mode_class[NUM_MACHINE_MODES]; 53 #define GET_MODE_CLASS(MODE) (mode_class[(int) (MODE)]) 54 55 /* Nonzero if MODE is an integral mode. */ 56 #define INTEGRAL_MODE_P(MODE) \ 57 (GET_MODE_CLASS (MODE) == MODE_INT \ 58 || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \ 59 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ 60 || GET_MODE_CLASS (MODE) == MODE_VECTOR_INT) 61 62 /* Nonzero if MODE is a floating-point mode. */ 63 #define FLOAT_MODE_P(MODE) \ 64 (GET_MODE_CLASS (MODE) == MODE_FLOAT \ 65 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \ 66 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT) 67 68 /* Nonzero if MODE is a complex mode. */ 69 #define COMPLEX_MODE_P(MODE) \ 70 (GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ 71 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) 72 73 /* Nonzero if MODE is a vector mode. */ 74 #define VECTOR_MODE_P(MODE) \ 75 (GET_MODE_CLASS (MODE) == MODE_VECTOR_INT \ 76 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT) 77 78 /* Nonzero if MODE is a scalar integral mode. */ 79 #define SCALAR_INT_MODE_P(MODE) \ 80 (GET_MODE_CLASS (MODE) == MODE_INT \ 81 || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT) 82 83 /* Nonzero if MODE is a scalar floating point mode. */ 84 #define SCALAR_FLOAT_MODE_P(MODE) \ 85 (GET_MODE_CLASS (MODE) == MODE_FLOAT) 86 87 /* Get the size in bytes of an object of mode MODE. */ 88 89 extern const unsigned char mode_size[NUM_MACHINE_MODES]; 90 #define GET_MODE_SIZE(MODE) (mode_size[(int) (MODE)]) 91 92 /* Get the size in bytes of the basic parts of an object of mode MODE. */ 93 94 extern const unsigned char mode_unit_size[NUM_MACHINE_MODES]; 95 #define GET_MODE_UNIT_SIZE(MODE) (mode_unit_size[(int) (MODE)]) 96 97 /* Get the number of units in the object. */ 98 99 #define GET_MODE_NUNITS(MODE) \ 100 ((GET_MODE_UNIT_SIZE ((MODE)) == 0) ? 0 \ 101 : (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE)))) 102 103 /* Get the size in bits of an object of mode MODE. */ 104 105 extern const unsigned short mode_bitsize[NUM_MACHINE_MODES]; 106 #define GET_MODE_BITSIZE(MODE) (mode_bitsize[(int) (MODE)]) 107 108 #endif /* not HAVE_MACHINE_MODES */ 109 110 #if defined HOST_WIDE_INT && ! defined GET_MODE_MASK 111 112 /* Get a bitmask containing 1 for all bits in a word 113 that fit within mode MODE. */ 114 115 extern const unsigned HOST_WIDE_INT mode_mask_array[NUM_MACHINE_MODES]; 116 117 #define GET_MODE_MASK(MODE) mode_mask_array[(int) (MODE)] 118 119 extern const enum machine_mode inner_mode_array[NUM_MACHINE_MODES]; 120 121 /* Return the mode of the inner elements in a vector. */ 122 123 #define GET_MODE_INNER(MODE) inner_mode_array[(int) (MODE)] 124 125 #endif /* defined (HOST_WIDE_INT) && ! defined GET_MODE_MASK */ 126 127 #if ! defined GET_MODE_WIDER_MODE || ! defined GET_MODE_ALIGNMENT \ 128 || ! defined GET_CLASS_NARROWEST_MODE 129 130 /* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */ 131 132 extern const unsigned char mode_wider_mode[NUM_MACHINE_MODES]; 133 #define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode)mode_wider_mode[(int) (MODE)]) 134 135 /* Return the mode for data of a given size SIZE and mode class CLASS. 136 If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. 137 The value is BLKmode if no other mode is found. */ 138 139 extern enum machine_mode mode_for_size PARAMS ((unsigned int, 140 enum mode_class, int)); 141 142 /* Similar, but find the smallest mode for a given width. */ 143 144 extern enum machine_mode smallest_mode_for_size 145 PARAMS ((unsigned int, enum mode_class)); 146 147 148 /* Return an integer mode of the exact same size as the input mode, 149 or BLKmode on failure. */ 150 151 extern enum machine_mode int_mode_for_mode PARAMS ((enum machine_mode)); 152 153 /* Find the best mode to use to access a bit field. */ 154 155 extern enum machine_mode get_best_mode PARAMS ((int, int, unsigned int, 156 enum machine_mode, int)); 157 158 /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */ 159 160 extern unsigned get_mode_alignment PARAMS ((enum machine_mode)); 161 162 #define GET_MODE_ALIGNMENT(MODE) get_mode_alignment (MODE) 163 164 /* For each class, get the narrowest mode in that class. */ 165 166 extern const enum machine_mode class_narrowest_mode[(int) MAX_MODE_CLASS]; 167 #define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int) (CLASS)] 168 169 /* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD 170 and the mode whose class is Pmode and whose size is POINTER_SIZE. */ 171 172 extern enum machine_mode byte_mode; 173 extern enum machine_mode word_mode; 174 extern enum machine_mode ptr_mode; 175 176 #endif /* ! defined GET_MODE_WIDER_MODE || ! defined GET_MODE_ALIGNMENT 177 || ! defined GET_CLASS_NARROWEST_MODE */ 178