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comparison gcc/machmode.h @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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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 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 3, 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 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
29 extern 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
36 enum 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
43 extern const unsigned char mode_class[NUM_MACHINE_MODES];
44 #define GET_MODE_CLASS(MODE) 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
179 extern 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. */
184 extern 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. */
188 extern 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. */
192 extern 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
198 extern 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
204 extern 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
216 extern 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
221 extern const unsigned char mode_wider[NUM_MACHINE_MODES];
222 #define GET_MODE_WIDER_MODE(MODE) mode_wider[MODE]
223
224 extern const unsigned char mode_2xwider[NUM_MACHINE_MODES];
225 #define GET_MODE_2XWIDER_MODE(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
231 extern 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
235 extern 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
242 extern enum machine_mode int_mode_for_mode (enum machine_mode);
243
244 /* Find the best mode to use to access a bit field. */
245
246 extern enum machine_mode get_best_mode (int, int, unsigned int,
247 enum machine_mode, int);
248
249 /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */
250
251 extern CONST_MODE_BASE_ALIGN unsigned char mode_base_align[NUM_MACHINE_MODES];
252
253 extern 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
259 extern const unsigned char class_narrowest_mode[MAX_MODE_CLASS];
260 #define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[CLASS]
261
262 /* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD
263 and the mode whose class is Pmode and whose size is POINTER_SIZE. */
264
265 extern enum machine_mode byte_mode;
266 extern enum machine_mode word_mode;
267 extern enum machine_mode ptr_mode;
268
269 /* Target-dependent machine mode initialization - in insn-modes.c. */
270 extern void init_adjust_machine_modes (void);
271
272 #endif /* not HAVE_MACHINE_MODES */