1 | /*===---- bmiintrin.h - BMI intrinsics -------------------------------------=== |
---|---|
2 | * |
3 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
4 | * of this software and associated documentation files (the "Software"), to deal |
5 | * in the Software without restriction, including without limitation the rights |
6 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
7 | * copies of the Software, and to permit persons to whom the Software is |
8 | * furnished to do so, subject to the following conditions: |
9 | * |
10 | * The above copyright notice and this permission notice shall be included in |
11 | * all copies or substantial portions of the Software. |
12 | * |
13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
15 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
16 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
17 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
18 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
19 | * THE SOFTWARE. |
20 | * |
21 | *===-----------------------------------------------------------------------=== |
22 | */ |
23 | |
24 | #if !defined __X86INTRIN_H && !defined __IMMINTRIN_H |
25 | #error "Never use <bmiintrin.h> directly; include <x86intrin.h> instead." |
26 | #endif |
27 | |
28 | #ifndef __BMIINTRIN_H |
29 | #define __BMIINTRIN_H |
30 | |
31 | #define _tzcnt_u16(a) (__tzcnt_u16((a))) |
32 | |
33 | #define _andn_u32(a, b) (__andn_u32((a), (b))) |
34 | |
35 | /* _bextr_u32 != __bextr_u32 */ |
36 | #define _blsi_u32(a) (__blsi_u32((a))) |
37 | |
38 | #define _blsmsk_u32(a) (__blsmsk_u32((a))) |
39 | |
40 | #define _blsr_u32(a) (__blsr_u32((a))) |
41 | |
42 | #define _tzcnt_u32(a) (__tzcnt_u32((a))) |
43 | |
44 | /* Define the default attributes for the functions in this file. */ |
45 | #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("bmi"))) |
46 | |
47 | /* Allow using the tzcnt intrinsics even for non-BMI targets. Since the TZCNT |
48 | instruction behaves as BSF on non-BMI targets, there is code that expects |
49 | to use it as a potentially faster version of BSF. */ |
50 | #define __RELAXED_FN_ATTRS __attribute__((__always_inline__, __nodebug__)) |
51 | |
52 | /// Counts the number of trailing zero bits in the operand. |
53 | /// |
54 | /// \headerfile <x86intrin.h> |
55 | /// |
56 | /// This intrinsic corresponds to the <c> TZCNT </c> instruction. |
57 | /// |
58 | /// \param __X |
59 | /// An unsigned 16-bit integer whose trailing zeros are to be counted. |
60 | /// \returns An unsigned 16-bit integer containing the number of trailing zero |
61 | /// bits in the operand. |
62 | static __inline__ unsigned short __RELAXED_FN_ATTRS |
63 | __tzcnt_u16(unsigned short __X) |
64 | { |
65 | return __builtin_ia32_tzcnt_u16(__X); |
66 | } |
67 | |
68 | /// Performs a bitwise AND of the second operand with the one's |
69 | /// complement of the first operand. |
70 | /// |
71 | /// \headerfile <x86intrin.h> |
72 | /// |
73 | /// This intrinsic corresponds to the <c> ANDN </c> instruction. |
74 | /// |
75 | /// \param __X |
76 | /// An unsigned integer containing one of the operands. |
77 | /// \param __Y |
78 | /// An unsigned integer containing one of the operands. |
79 | /// \returns An unsigned integer containing the bitwise AND of the second |
80 | /// operand with the one's complement of the first operand. |
81 | static __inline__ unsigned int __DEFAULT_FN_ATTRS |
82 | __andn_u32(unsigned int __X, unsigned int __Y) |
83 | { |
84 | return ~__X & __Y; |
85 | } |
86 | |
87 | /* AMD-specified, double-leading-underscore version of BEXTR */ |
88 | /// Extracts the specified bits from the first operand and returns them |
89 | /// in the least significant bits of the result. |
90 | /// |
91 | /// \headerfile <x86intrin.h> |
92 | /// |
93 | /// This intrinsic corresponds to the <c> BEXTR </c> instruction. |
94 | /// |
95 | /// \param __X |
96 | /// An unsigned integer whose bits are to be extracted. |
97 | /// \param __Y |
98 | /// An unsigned integer used to specify which bits are extracted. Bits [7:0] |
99 | /// specify the index of the least significant bit. Bits [15:8] specify the |
100 | /// number of bits to be extracted. |
101 | /// \returns An unsigned integer whose least significant bits contain the |
102 | /// extracted bits. |
103 | /// \see _bextr_u32 |
104 | static __inline__ unsigned int __DEFAULT_FN_ATTRS |
105 | __bextr_u32(unsigned int __X, unsigned int __Y) |
106 | { |
107 | return __builtin_ia32_bextr_u32(__X, __Y); |
108 | } |
109 | |
110 | /* Intel-specified, single-leading-underscore version of BEXTR */ |
111 | /// Extracts the specified bits from the first operand and returns them |
112 | /// in the least significant bits of the result. |
113 | /// |
114 | /// \headerfile <x86intrin.h> |
115 | /// |
116 | /// This intrinsic corresponds to the <c> BEXTR </c> instruction. |
117 | /// |
118 | /// \param __X |
119 | /// An unsigned integer whose bits are to be extracted. |
120 | /// \param __Y |
121 | /// An unsigned integer used to specify the index of the least significant |
122 | /// bit for the bits to be extracted. Bits [7:0] specify the index. |
123 | /// \param __Z |
124 | /// An unsigned integer used to specify the number of bits to be extracted. |
125 | /// Bits [7:0] specify the number of bits. |
126 | /// \returns An unsigned integer whose least significant bits contain the |
127 | /// extracted bits. |
128 | /// \see __bextr_u32 |
129 | static __inline__ unsigned int __DEFAULT_FN_ATTRS |
130 | _bextr_u32(unsigned int __X, unsigned int __Y, unsigned int __Z) |
131 | { |
132 | return __builtin_ia32_bextr_u32 (__X, ((__Y & 0xff) | ((__Z & 0xff) << 8))); |
133 | } |
134 | |
135 | /// Clears all bits in the source except for the least significant bit |
136 | /// containing a value of 1 and returns the result. |
137 | /// |
138 | /// \headerfile <x86intrin.h> |
139 | /// |
140 | /// This intrinsic corresponds to the <c> BLSI </c> instruction. |
141 | /// |
142 | /// \param __X |
143 | /// An unsigned integer whose bits are to be cleared. |
144 | /// \returns An unsigned integer containing the result of clearing the bits from |
145 | /// the source operand. |
146 | static __inline__ unsigned int __DEFAULT_FN_ATTRS |
147 | __blsi_u32(unsigned int __X) |
148 | { |
149 | return __X & -__X; |
150 | } |
151 | |
152 | /// Creates a mask whose bits are set to 1, using bit 0 up to and |
153 | /// including the least significant bit that is set to 1 in the source |
154 | /// operand and returns the result. |
155 | /// |
156 | /// \headerfile <x86intrin.h> |
157 | /// |
158 | /// This intrinsic corresponds to the <c> BLSMSK </c> instruction. |
159 | /// |
160 | /// \param __X |
161 | /// An unsigned integer used to create the mask. |
162 | /// \returns An unsigned integer containing the newly created mask. |
163 | static __inline__ unsigned int __DEFAULT_FN_ATTRS |
164 | __blsmsk_u32(unsigned int __X) |
165 | { |
166 | return __X ^ (__X - 1); |
167 | } |
168 | |
169 | /// Clears the least significant bit that is set to 1 in the source |
170 | /// operand and returns the result. |
171 | /// |
172 | /// \headerfile <x86intrin.h> |
173 | /// |
174 | /// This intrinsic corresponds to the <c> BLSR </c> instruction. |
175 | /// |
176 | /// \param __X |
177 | /// An unsigned integer containing the operand to be cleared. |
178 | /// \returns An unsigned integer containing the result of clearing the source |
179 | /// operand. |
180 | static __inline__ unsigned int __DEFAULT_FN_ATTRS |
181 | __blsr_u32(unsigned int __X) |
182 | { |
183 | return __X & (__X - 1); |
184 | } |
185 | |
186 | /// Counts the number of trailing zero bits in the operand. |
187 | /// |
188 | /// \headerfile <x86intrin.h> |
189 | /// |
190 | /// This intrinsic corresponds to the <c> TZCNT </c> instruction. |
191 | /// |
192 | /// \param __X |
193 | /// An unsigned 32-bit integer whose trailing zeros are to be counted. |
194 | /// \returns An unsigned 32-bit integer containing the number of trailing zero |
195 | /// bits in the operand. |
196 | static __inline__ unsigned int __RELAXED_FN_ATTRS |
197 | __tzcnt_u32(unsigned int __X) |
198 | { |
199 | return __builtin_ia32_tzcnt_u32(__X); |
200 | } |
201 | |
202 | /// Counts the number of trailing zero bits in the operand. |
203 | /// |
204 | /// \headerfile <x86intrin.h> |
205 | /// |
206 | /// This intrinsic corresponds to the <c> TZCNT </c> instruction. |
207 | /// |
208 | /// \param __X |
209 | /// An unsigned 32-bit integer whose trailing zeros are to be counted. |
210 | /// \returns An 32-bit integer containing the number of trailing zero bits in |
211 | /// the operand. |
212 | static __inline__ int __RELAXED_FN_ATTRS |
213 | _mm_tzcnt_32(unsigned int __X) |
214 | { |
215 | return __builtin_ia32_tzcnt_u32(__X); |
216 | } |
217 | |
218 | #ifdef __x86_64__ |
219 | |
220 | #define _andn_u64(a, b) (__andn_u64((a), (b))) |
221 | |
222 | /* _bextr_u64 != __bextr_u64 */ |
223 | #define _blsi_u64(a) (__blsi_u64((a))) |
224 | |
225 | #define _blsmsk_u64(a) (__blsmsk_u64((a))) |
226 | |
227 | #define _blsr_u64(a) (__blsr_u64((a))) |
228 | |
229 | #define _tzcnt_u64(a) (__tzcnt_u64((a))) |
230 | |
231 | /// Performs a bitwise AND of the second operand with the one's |
232 | /// complement of the first operand. |
233 | /// |
234 | /// \headerfile <x86intrin.h> |
235 | /// |
236 | /// This intrinsic corresponds to the <c> ANDN </c> instruction. |
237 | /// |
238 | /// \param __X |
239 | /// An unsigned 64-bit integer containing one of the operands. |
240 | /// \param __Y |
241 | /// An unsigned 64-bit integer containing one of the operands. |
242 | /// \returns An unsigned 64-bit integer containing the bitwise AND of the second |
243 | /// operand with the one's complement of the first operand. |
244 | static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
245 | __andn_u64 (unsigned long long __X, unsigned long long __Y) |
246 | { |
247 | return ~__X & __Y; |
248 | } |
249 | |
250 | /* AMD-specified, double-leading-underscore version of BEXTR */ |
251 | /// Extracts the specified bits from the first operand and returns them |
252 | /// in the least significant bits of the result. |
253 | /// |
254 | /// \headerfile <x86intrin.h> |
255 | /// |
256 | /// This intrinsic corresponds to the <c> BEXTR </c> instruction. |
257 | /// |
258 | /// \param __X |
259 | /// An unsigned 64-bit integer whose bits are to be extracted. |
260 | /// \param __Y |
261 | /// An unsigned 64-bit integer used to specify which bits are extracted. Bits |
262 | /// [7:0] specify the index of the least significant bit. Bits [15:8] specify |
263 | /// the number of bits to be extracted. |
264 | /// \returns An unsigned 64-bit integer whose least significant bits contain the |
265 | /// extracted bits. |
266 | /// \see _bextr_u64 |
267 | static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
268 | __bextr_u64(unsigned long long __X, unsigned long long __Y) |
269 | { |
270 | return __builtin_ia32_bextr_u64(__X, __Y); |
271 | } |
272 | |
273 | /* Intel-specified, single-leading-underscore version of BEXTR */ |
274 | /// Extracts the specified bits from the first operand and returns them |
275 | /// in the least significant bits of the result. |
276 | /// |
277 | /// \headerfile <x86intrin.h> |
278 | /// |
279 | /// This intrinsic corresponds to the <c> BEXTR </c> instruction. |
280 | /// |
281 | /// \param __X |
282 | /// An unsigned 64-bit integer whose bits are to be extracted. |
283 | /// \param __Y |
284 | /// An unsigned integer used to specify the index of the least significant |
285 | /// bit for the bits to be extracted. Bits [7:0] specify the index. |
286 | /// \param __Z |
287 | /// An unsigned integer used to specify the number of bits to be extracted. |
288 | /// Bits [7:0] specify the number of bits. |
289 | /// \returns An unsigned 64-bit integer whose least significant bits contain the |
290 | /// extracted bits. |
291 | /// \see __bextr_u64 |
292 | static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
293 | _bextr_u64(unsigned long long __X, unsigned int __Y, unsigned int __Z) |
294 | { |
295 | return __builtin_ia32_bextr_u64 (__X, ((__Y & 0xff) | ((__Z & 0xff) << 8))); |
296 | } |
297 | |
298 | /// Clears all bits in the source except for the least significant bit |
299 | /// containing a value of 1 and returns the result. |
300 | /// |
301 | /// \headerfile <x86intrin.h> |
302 | /// |
303 | /// This intrinsic corresponds to the <c> BLSI </c> instruction. |
304 | /// |
305 | /// \param __X |
306 | /// An unsigned 64-bit integer whose bits are to be cleared. |
307 | /// \returns An unsigned 64-bit integer containing the result of clearing the |
308 | /// bits from the source operand. |
309 | static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
310 | __blsi_u64(unsigned long long __X) |
311 | { |
312 | return __X & -__X; |
313 | } |
314 | |
315 | /// Creates a mask whose bits are set to 1, using bit 0 up to and |
316 | /// including the least significant bit that is set to 1 in the source |
317 | /// operand and returns the result. |
318 | /// |
319 | /// \headerfile <x86intrin.h> |
320 | /// |
321 | /// This intrinsic corresponds to the <c> BLSMSK </c> instruction. |
322 | /// |
323 | /// \param __X |
324 | /// An unsigned 64-bit integer used to create the mask. |
325 | /// \returns An unsigned 64-bit integer containing the newly created mask. |
326 | static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
327 | __blsmsk_u64(unsigned long long __X) |
328 | { |
329 | return __X ^ (__X - 1); |
330 | } |
331 | |
332 | /// Clears the least significant bit that is set to 1 in the source |
333 | /// operand and returns the result. |
334 | /// |
335 | /// \headerfile <x86intrin.h> |
336 | /// |
337 | /// This intrinsic corresponds to the <c> BLSR </c> instruction. |
338 | /// |
339 | /// \param __X |
340 | /// An unsigned 64-bit integer containing the operand to be cleared. |
341 | /// \returns An unsigned 64-bit integer containing the result of clearing the |
342 | /// source operand. |
343 | static __inline__ unsigned long long __DEFAULT_FN_ATTRS |
344 | __blsr_u64(unsigned long long __X) |
345 | { |
346 | return __X & (__X - 1); |
347 | } |
348 | |
349 | /// Counts the number of trailing zero bits in the operand. |
350 | /// |
351 | /// \headerfile <x86intrin.h> |
352 | /// |
353 | /// This intrinsic corresponds to the <c> TZCNT </c> instruction. |
354 | /// |
355 | /// \param __X |
356 | /// An unsigned 64-bit integer whose trailing zeros are to be counted. |
357 | /// \returns An unsigned 64-bit integer containing the number of trailing zero |
358 | /// bits in the operand. |
359 | static __inline__ unsigned long long __RELAXED_FN_ATTRS |
360 | __tzcnt_u64(unsigned long long __X) |
361 | { |
362 | return __builtin_ia32_tzcnt_u64(__X); |
363 | } |
364 | |
365 | /// Counts the number of trailing zero bits in the operand. |
366 | /// |
367 | /// \headerfile <x86intrin.h> |
368 | /// |
369 | /// This intrinsic corresponds to the <c> TZCNT </c> instruction. |
370 | /// |
371 | /// \param __X |
372 | /// An unsigned 64-bit integer whose trailing zeros are to be counted. |
373 | /// \returns An 64-bit integer containing the number of trailing zero bits in |
374 | /// the operand. |
375 | static __inline__ long long __RELAXED_FN_ATTRS |
376 | _mm_tzcnt_64(unsigned long long __X) |
377 | { |
378 | return __builtin_ia32_tzcnt_u64(__X); |
379 | } |
380 | |
381 | #endif /* __x86_64__ */ |
382 | |
383 | #undef __DEFAULT_FN_ATTRS |
384 | #undef __RELAXED_FN_ATTRS |
385 | |
386 | #endif /* __BMIINTRIN_H */ |
387 |