Skip to content
This repository

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
tree: 9fa499dbdf
Fetching contributors…

Cannot retrieve contributors at this time

file 297 lines (218 sloc) 10.886 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297
/* Machine mode definitions for GCC; included by rtl.h and tree.h.
Copyright (C) 1991, 1993, 1994, 1996, 1998, 1999, 2000, 2001, 2003,
2007, 2008, 2009, 2010, 2012 Free Software Foundation, Inc.

This file is part of GCC.

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 3, or (at your option) any later
version.

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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */

#ifndef HAVE_MACHINE_MODES
#define HAVE_MACHINE_MODES

/* Make an enum class that gives all the machine modes. */
#include "insn-modes.h"

/* Get the name of mode MODE as a string. */

extern const char * const mode_name[NUM_MACHINE_MODES];
#define GET_MODE_NAME(MODE) mode_name[MODE]

/* Mode classes. */

#include "mode-classes.def"
#define DEF_MODE_CLASS(M) M
enum mode_class { MODE_CLASSES, MAX_MODE_CLASS };
#undef DEF_MODE_CLASS
#undef MODE_CLASSES

/* Get the general kind of object that mode MODE represents
(integer, floating, complex, etc.) */

extern const unsigned char mode_class[NUM_MACHINE_MODES];
#define GET_MODE_CLASS(MODE) ((enum mode_class) mode_class[MODE])

/* Nonzero if MODE is an integral mode. */
#define INTEGRAL_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_INT \
|| GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_INT)

/* Nonzero if MODE is a floating-point mode. */
#define FLOAT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT)

/* Nonzero if MODE is a complex mode. */
#define COMPLEX_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)

/* Nonzero if MODE is a vector mode. */
#define VECTOR_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_VECTOR_INT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM)

/* Nonzero if MODE is a scalar integral mode. */
#define SCALAR_INT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_INT \
|| GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT)

/* Nonzero if MODE is a scalar floating point mode. */
#define SCALAR_FLOAT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT)

/* Nonzero if MODE is a decimal floating point mode. */
#define DECIMAL_FLOAT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT)

/* Nonzero if MODE is a scalar fract mode. */
#define SCALAR_FRACT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_FRACT)

/* Nonzero if MODE is a scalar ufract mode. */
#define SCALAR_UFRACT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_UFRACT)

/* Nonzero if MODE is a scalar fract or ufract mode. */
#define ALL_SCALAR_FRACT_MODE_P(MODE) \
(SCALAR_FRACT_MODE_P (MODE) || SCALAR_UFRACT_MODE_P (MODE))

/* Nonzero if MODE is a scalar accum mode. */
#define SCALAR_ACCUM_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_ACCUM)

/* Nonzero if MODE is a scalar uaccum mode. */
#define SCALAR_UACCUM_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_UACCUM)

/* Nonzero if MODE is a scalar accum or uaccum mode. */
#define ALL_SCALAR_ACCUM_MODE_P(MODE) \
(SCALAR_ACCUM_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE))

/* Nonzero if MODE is a scalar fract or accum mode. */
#define SIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \
(SCALAR_FRACT_MODE_P (MODE) || SCALAR_ACCUM_MODE_P (MODE))

/* Nonzero if MODE is a scalar ufract or uaccum mode. */
#define UNSIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \
(SCALAR_UFRACT_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE))

/* Nonzero if MODE is a scalar fract, ufract, accum or uaccum mode. */
#define ALL_SCALAR_FIXED_POINT_MODE_P(MODE) \
(SIGNED_SCALAR_FIXED_POINT_MODE_P (MODE) \
|| UNSIGNED_SCALAR_FIXED_POINT_MODE_P (MODE))

/* Nonzero if MODE is a scalar/vector fract mode. */
#define FRACT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_FRACT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT)

/* Nonzero if MODE is a scalar/vector ufract mode. */
#define UFRACT_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_UFRACT \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT)

/* Nonzero if MODE is a scalar/vector fract or ufract mode. */
#define ALL_FRACT_MODE_P(MODE) \
(FRACT_MODE_P (MODE) || UFRACT_MODE_P (MODE))

/* Nonzero if MODE is a scalar/vector accum mode. */
#define ACCUM_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_ACCUM \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM)

/* Nonzero if MODE is a scalar/vector uaccum mode. */
#define UACCUM_MODE_P(MODE) \
(GET_MODE_CLASS (MODE) == MODE_UACCUM \
|| GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM)

/* Nonzero if MODE is a scalar/vector accum or uaccum mode. */
#define ALL_ACCUM_MODE_P(MODE) \
(ACCUM_MODE_P (MODE) || UACCUM_MODE_P (MODE))

/* Nonzero if MODE is a scalar/vector fract or accum mode. */
#define SIGNED_FIXED_POINT_MODE_P(MODE) \
(FRACT_MODE_P (MODE) || ACCUM_MODE_P (MODE))

/* Nonzero if MODE is a scalar/vector ufract or uaccum mode. */
#define UNSIGNED_FIXED_POINT_MODE_P(MODE) \
(UFRACT_MODE_P (MODE) || UACCUM_MODE_P (MODE))

/* Nonzero if MODE is a scalar/vector fract, ufract, accum or uaccum mode. */
#define ALL_FIXED_POINT_MODE_P(MODE) \
(SIGNED_FIXED_POINT_MODE_P (MODE) \
|| UNSIGNED_FIXED_POINT_MODE_P (MODE))

/* Nonzero if CLASS modes can be widened. */
#define CLASS_HAS_WIDER_MODES_P(CLASS) \
(CLASS == MODE_INT \
|| CLASS == MODE_PARTIAL_INT \
|| CLASS == MODE_FLOAT \
|| CLASS == MODE_DECIMAL_FLOAT \
|| CLASS == MODE_COMPLEX_FLOAT \
|| CLASS == MODE_FRACT \
|| CLASS == MODE_UFRACT \
|| CLASS == MODE_ACCUM \
|| CLASS == MODE_UACCUM)

/* Get the size in bytes and bits of an object of mode MODE. */

extern CONST_MODE_SIZE unsigned char mode_size[NUM_MACHINE_MODES];
#define GET_MODE_SIZE(MODE) ((unsigned short) mode_size[MODE])
#define GET_MODE_BITSIZE(MODE) \
((unsigned short) (GET_MODE_SIZE (MODE) * BITS_PER_UNIT))

/* Get the number of value bits of an object of mode MODE. */
extern const unsigned short mode_precision[NUM_MACHINE_MODES];
#define GET_MODE_PRECISION(MODE) mode_precision[MODE]

/* Get the number of integral bits of an object of mode MODE. */
extern CONST_MODE_IBIT unsigned char mode_ibit[NUM_MACHINE_MODES];
#define GET_MODE_IBIT(MODE) mode_ibit[MODE]

/* Get the number of fractional bits of an object of mode MODE. */
extern CONST_MODE_FBIT unsigned char mode_fbit[NUM_MACHINE_MODES];
#define GET_MODE_FBIT(MODE) mode_fbit[MODE]

/* Get a bitmask containing 1 for all bits in a word
that fit within mode MODE. */

extern const unsigned HOST_WIDE_INT mode_mask_array[NUM_MACHINE_MODES];

#define GET_MODE_MASK(MODE) mode_mask_array[MODE]

/* Return the mode of the inner elements in a vector. */

extern const unsigned char mode_inner[NUM_MACHINE_MODES];
#define GET_MODE_INNER(MODE) ((enum machine_mode) mode_inner[MODE])

/* Get the size in bytes or bites of the basic parts of an
object of mode MODE. */

#define GET_MODE_UNIT_SIZE(MODE) \
(GET_MODE_INNER (MODE) == VOIDmode \
? GET_MODE_SIZE (MODE) \
: GET_MODE_SIZE (GET_MODE_INNER (MODE)))

#define GET_MODE_UNIT_BITSIZE(MODE) \
((unsigned short) (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT))

/* Get the number of units in the object. */

extern const unsigned char mode_nunits[NUM_MACHINE_MODES];
#define GET_MODE_NUNITS(MODE) mode_nunits[MODE]

/* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */

extern const unsigned char mode_wider[NUM_MACHINE_MODES];
#define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode) mode_wider[MODE])

/* For scalars, this is a mode with twice the precision. For vectors,
this is a mode with the same inner mode but with twice the elements. */
extern const unsigned char mode_2xwider[NUM_MACHINE_MODES];
#define GET_MODE_2XWIDER_MODE(MODE) ((enum machine_mode) mode_2xwider[MODE])

/* Return the mode for data of a given size SIZE and mode class CLASS.
If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
The value is BLKmode if no other mode is found. */

extern enum machine_mode mode_for_size (unsigned int, enum mode_class, int);

/* Similar, but find the smallest mode for a given width. */

extern enum machine_mode smallest_mode_for_size (unsigned int,
enum mode_class);


/* Return an integer mode of the exact same size as the input mode,
or BLKmode on failure. */

extern enum machine_mode int_mode_for_mode (enum machine_mode);

/* Return a mode that is suitable for representing a vector,
or BLKmode on failure. */

extern enum machine_mode mode_for_vector (enum machine_mode, unsigned);

/* Find the best mode to use to access a bit field. */

extern enum machine_mode get_best_mode (int, int,
unsigned HOST_WIDE_INT,
unsigned HOST_WIDE_INT,
unsigned int,
enum machine_mode, int);

/* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */

extern CONST_MODE_BASE_ALIGN unsigned char mode_base_align[NUM_MACHINE_MODES];

extern unsigned get_mode_alignment (enum machine_mode);

#define GET_MODE_ALIGNMENT(MODE) get_mode_alignment (MODE)

/* For each class, get the narrowest mode in that class. */

extern const unsigned char class_narrowest_mode[MAX_MODE_CLASS];
#define GET_CLASS_NARROWEST_MODE(CLASS) \
((enum machine_mode) class_narrowest_mode[CLASS])

/* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD
and the mode whose class is Pmode and whose size is POINTER_SIZE. */

extern enum machine_mode byte_mode;
extern enum machine_mode word_mode;
extern enum machine_mode ptr_mode;

/* Target-dependent machine mode initialization - in insn-modes.c. */
extern void init_adjust_machine_modes (void);

#define TRULY_NOOP_TRUNCATION_MODES_P(MODE1, MODE2) \
TRULY_NOOP_TRUNCATION (GET_MODE_PRECISION (MODE1), \
GET_MODE_PRECISION (MODE2))

#define HWI_COMPUTABLE_MODE_P(MODE) \
(SCALAR_INT_MODE_P (MODE) \
&& GET_MODE_PRECISION (MODE) <= HOST_BITS_PER_WIDE_INT)

#endif /* not HAVE_MACHINE_MODES */
Something went wrong with that request. Please try again.