1/* Machine mode definitions for GCC; included by rtl.h and tree.h. 2 Copyright (C) 1991, 1993, 1994, 1996, 1998, 1999, 2000, 2001, 2003, 3 2007, 2008, 2009 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 3, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING3. If not see 19<http://www.gnu.org/licenses/>. */ 20 21#ifndef HAVE_MACHINE_MODES 22#define HAVE_MACHINE_MODES 23 24/* Make an enum class that gives all the machine modes. */ 25#include "insn-modes.h" 26 27/* Get the name of mode MODE as a string. */ 28 29extern const char * const mode_name[NUM_MACHINE_MODES]; 30#define GET_MODE_NAME(MODE) mode_name[MODE] 31 32/* Mode classes. */ 33 34#include "mode-classes.def" 35#define DEF_MODE_CLASS(M) M 36enum mode_class { MODE_CLASSES, MAX_MODE_CLASS }; 37#undef DEF_MODE_CLASS 38#undef MODE_CLASSES 39 40/* Get the general kind of object that mode MODE represents 41 (integer, floating, complex, etc.) */ 42 43extern const unsigned char mode_class[NUM_MACHINE_MODES]; 44#define GET_MODE_CLASS(MODE) ((enum mode_class) mode_class[MODE]) 45 46/* Nonzero if MODE is an integral mode. */ 47#define INTEGRAL_MODE_P(MODE) \ 48 (GET_MODE_CLASS (MODE) == MODE_INT \ 49 || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \ 50 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ 51 || GET_MODE_CLASS (MODE) == MODE_VECTOR_INT) 52 53/* Nonzero if MODE is a floating-point mode. */ 54#define FLOAT_MODE_P(MODE) \ 55 (GET_MODE_CLASS (MODE) == MODE_FLOAT \ 56 || GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT \ 57 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \ 58 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT) 59 60/* Nonzero if MODE is a complex mode. */ 61#define COMPLEX_MODE_P(MODE) \ 62 (GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ 63 || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) 64 65/* Nonzero if MODE is a vector mode. */ 66#define VECTOR_MODE_P(MODE) \ 67 (GET_MODE_CLASS (MODE) == MODE_VECTOR_INT \ 68 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT \ 69 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT \ 70 || GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT \ 71 || GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM \ 72 || GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM) 73 74/* Nonzero if MODE is a scalar integral mode. */ 75#define SCALAR_INT_MODE_P(MODE) \ 76 (GET_MODE_CLASS (MODE) == MODE_INT \ 77 || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT) 78 79/* Nonzero if MODE is a scalar floating point mode. */ 80#define SCALAR_FLOAT_MODE_P(MODE) \ 81 (GET_MODE_CLASS (MODE) == MODE_FLOAT \ 82 || GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT) 83 84/* Nonzero if MODE is a decimal floating point mode. */ 85#define DECIMAL_FLOAT_MODE_P(MODE) \ 86 (GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT) 87 88/* Nonzero if MODE is a scalar fract mode. */ 89#define SCALAR_FRACT_MODE_P(MODE) \ 90 (GET_MODE_CLASS (MODE) == MODE_FRACT) 91 92/* Nonzero if MODE is a scalar ufract mode. */ 93#define SCALAR_UFRACT_MODE_P(MODE) \ 94 (GET_MODE_CLASS (MODE) == MODE_UFRACT) 95 96/* Nonzero if MODE is a scalar fract or ufract mode. */ 97#define ALL_SCALAR_FRACT_MODE_P(MODE) \ 98 (SCALAR_FRACT_MODE_P (MODE) || SCALAR_UFRACT_MODE_P (MODE)) 99 100/* Nonzero if MODE is a scalar accum mode. */ 101#define SCALAR_ACCUM_MODE_P(MODE) \ 102 (GET_MODE_CLASS (MODE) == MODE_ACCUM) 103 104/* Nonzero if MODE is a scalar uaccum mode. */ 105#define SCALAR_UACCUM_MODE_P(MODE) \ 106 (GET_MODE_CLASS (MODE) == MODE_UACCUM) 107 108/* Nonzero if MODE is a scalar accum or uaccum mode. */ 109#define ALL_SCALAR_ACCUM_MODE_P(MODE) \ 110 (SCALAR_ACCUM_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE)) 111 112/* Nonzero if MODE is a scalar fract or accum mode. */ 113#define SIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \ 114 (SCALAR_FRACT_MODE_P (MODE) || SCALAR_ACCUM_MODE_P (MODE)) 115 116/* Nonzero if MODE is a scalar ufract or uaccum mode. */ 117#define UNSIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \ 118 (SCALAR_UFRACT_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE)) 119 120/* Nonzero if MODE is a scalar fract, ufract, accum or uaccum mode. */ 121#define ALL_SCALAR_FIXED_POINT_MODE_P(MODE) \ 122 (SIGNED_SCALAR_FIXED_POINT_MODE_P (MODE) \ 123 || UNSIGNED_SCALAR_FIXED_POINT_MODE_P (MODE)) 124 125/* Nonzero if MODE is a scalar/vector fract mode. */ 126#define FRACT_MODE_P(MODE) \ 127 (GET_MODE_CLASS (MODE) == MODE_FRACT \ 128 || GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT) 129 130/* Nonzero if MODE is a scalar/vector ufract mode. */ 131#define UFRACT_MODE_P(MODE) \ 132 (GET_MODE_CLASS (MODE) == MODE_UFRACT \ 133 || GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT) 134 135/* Nonzero if MODE is a scalar/vector fract or ufract mode. */ 136#define ALL_FRACT_MODE_P(MODE) \ 137 (FRACT_MODE_P (MODE) || UFRACT_MODE_P (MODE)) 138 139/* Nonzero if MODE is a scalar/vector accum mode. */ 140#define ACCUM_MODE_P(MODE) \ 141 (GET_MODE_CLASS (MODE) == MODE_ACCUM \ 142 || GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM) 143 144/* Nonzero if MODE is a scalar/vector uaccum mode. */ 145#define UACCUM_MODE_P(MODE) \ 146 (GET_MODE_CLASS (MODE) == MODE_UACCUM \ 147 || GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM) 148 149/* Nonzero if MODE is a scalar/vector accum or uaccum mode. */ 150#define ALL_ACCUM_MODE_P(MODE) \ 151 (ACCUM_MODE_P (MODE) || UACCUM_MODE_P (MODE)) 152 153/* Nonzero if MODE is a scalar/vector fract or accum mode. */ 154#define SIGNED_FIXED_POINT_MODE_P(MODE) \ 155 (FRACT_MODE_P (MODE) || ACCUM_MODE_P (MODE)) 156 157/* Nonzero if MODE is a scalar/vector ufract or uaccum mode. */ 158#define UNSIGNED_FIXED_POINT_MODE_P(MODE) \ 159 (UFRACT_MODE_P (MODE) || UACCUM_MODE_P (MODE)) 160 161/* Nonzero if MODE is a scalar/vector fract, ufract, accum or uaccum mode. */ 162#define ALL_FIXED_POINT_MODE_P(MODE) \ 163 (SIGNED_FIXED_POINT_MODE_P (MODE) \ 164 || UNSIGNED_FIXED_POINT_MODE_P (MODE)) 165 166/* Nonzero if CLASS modes can be widened. */ 167#define CLASS_HAS_WIDER_MODES_P(CLASS) \ 168 (CLASS == MODE_INT \ 169 || CLASS == MODE_FLOAT \ 170 || CLASS == MODE_DECIMAL_FLOAT \ 171 || CLASS == MODE_COMPLEX_FLOAT \ 172 || CLASS == MODE_FRACT \ 173 || CLASS == MODE_UFRACT \ 174 || CLASS == MODE_ACCUM \ 175 || CLASS == MODE_UACCUM) 176 177/* Get the size in bytes and bits of an object of mode MODE. */ 178 179extern CONST_MODE_SIZE unsigned char mode_size[NUM_MACHINE_MODES]; 180#define GET_MODE_SIZE(MODE) ((unsigned short) mode_size[MODE]) 181#define GET_MODE_BITSIZE(MODE) ((unsigned short) (GET_MODE_SIZE (MODE) * BITS_PER_UNIT)) 182 183/* Get the number of value bits of an object of mode MODE. */ 184extern const unsigned short mode_precision[NUM_MACHINE_MODES]; 185#define GET_MODE_PRECISION(MODE) mode_precision[MODE] 186 187/* Get the number of integral bits of an object of mode MODE. */ 188extern CONST_MODE_IBIT unsigned char mode_ibit[NUM_MACHINE_MODES]; 189#define GET_MODE_IBIT(MODE) mode_ibit[MODE] 190 191/* Get the number of fractional bits of an object of mode MODE. */ 192extern CONST_MODE_FBIT unsigned char mode_fbit[NUM_MACHINE_MODES]; 193#define GET_MODE_FBIT(MODE) mode_fbit[MODE] 194 195/* Get a bitmask containing 1 for all bits in a word 196 that fit within mode MODE. */ 197 198extern const unsigned HOST_WIDE_INT mode_mask_array[NUM_MACHINE_MODES]; 199 200#define GET_MODE_MASK(MODE) mode_mask_array[MODE] 201 202/* Return the mode of the inner elements in a vector. */ 203 204extern const unsigned char mode_inner[NUM_MACHINE_MODES]; 205#define GET_MODE_INNER(MODE) ((enum machine_mode) mode_inner[MODE]) 206 207/* Get the size in bytes of the basic parts of an object of mode MODE. */ 208 209#define GET_MODE_UNIT_SIZE(MODE) \ 210 (GET_MODE_INNER (MODE) == VOIDmode \ 211 ? GET_MODE_SIZE (MODE) \ 212 : GET_MODE_SIZE (GET_MODE_INNER (MODE))) 213 214/* Get the number of units in the object. */ 215 216extern const unsigned char mode_nunits[NUM_MACHINE_MODES]; 217#define GET_MODE_NUNITS(MODE) mode_nunits[MODE] 218 219/* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */ 220 221extern const unsigned char mode_wider[NUM_MACHINE_MODES]; 222#define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode) mode_wider[MODE]) 223 224extern const unsigned char mode_2xwider[NUM_MACHINE_MODES]; 225#define GET_MODE_2XWIDER_MODE(MODE) ((enum machine_mode) mode_2xwider[MODE]) 226 227/* Return the mode for data of a given size SIZE and mode class CLASS. 228 If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. 229 The value is BLKmode if no other mode is found. */ 230 231extern enum machine_mode mode_for_size (unsigned int, enum mode_class, int); 232 233/* Similar, but find the smallest mode for a given width. */ 234 235extern enum machine_mode smallest_mode_for_size (unsigned int, 236 enum mode_class); 237 238 239/* Return an integer mode of the exact same size as the input mode, 240 or BLKmode on failure. */ 241 242extern enum machine_mode int_mode_for_mode (enum machine_mode); 243 244/* Find the best mode to use to access a bit field. */ 245 246extern enum machine_mode get_best_mode (int, int, unsigned int, 247 enum machine_mode, int); 248 249/* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */ 250 251extern CONST_MODE_BASE_ALIGN unsigned char mode_base_align[NUM_MACHINE_MODES]; 252 253extern unsigned get_mode_alignment (enum machine_mode); 254 255#define GET_MODE_ALIGNMENT(MODE) get_mode_alignment (MODE) 256 257/* For each class, get the narrowest mode in that class. */ 258 259extern const unsigned char class_narrowest_mode[MAX_MODE_CLASS]; 260#define GET_CLASS_NARROWEST_MODE(CLASS) \ 261 ((enum machine_mode) class_narrowest_mode[CLASS]) 262 263/* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD 264 and the mode whose class is Pmode and whose size is POINTER_SIZE. */ 265 266extern enum machine_mode byte_mode; 267extern enum machine_mode word_mode; 268extern enum machine_mode ptr_mode; 269 270/* Target-dependent machine mode initialization - in insn-modes.c. */ 271extern void init_adjust_machine_modes (void); 272 273#endif /* not HAVE_MACHINE_MODES */ 274