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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, 2009 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) ((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 | ||
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) ((enum machine_mode) mode_wider[MODE]) | |
223 | ||
224 | extern 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 | ||
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) \ | |
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 | ||
266 | extern enum machine_mode byte_mode; | |
267 | extern enum machine_mode word_mode; | |
268 | extern enum machine_mode ptr_mode; | |
269 | ||
270 | /* Target-dependent machine mode initialization - in insn-modes.c. */ | |
271 | extern void init_adjust_machine_modes (void); | |
272 | ||
273 | #endif /* not HAVE_MACHINE_MODES */ |