clang 8.0.0

clzerointrin.h
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1 /*===----------------------- clzerointrin.h - CLZERO ----------------------===
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 #if !defined __X86INTRIN_H && !defined __IMMINTRIN_H
24 #error "Never use <clzerointrin.h> directly; include <x86intrin.h> instead."
25 #endif
26
27 #ifndef __CLZEROINTRIN_H
28 #define __CLZEROINTRIN_H
29
30 /* Define the default attributes for the functions in this file. */
31 #define __DEFAULT_FN_ATTRS \
32 __attribute__((__always_inline__, __nodebug__, __target__("clzero")))
33
34 /// Loads the cache line address and zero's out the cacheline
35 ///
36 /// \headerfile <clzerointrin.h>
37 ///
38 /// This intrinsic corresponds to the <c> CLZERO </c> instruction.
39 ///
40 /// \param __line
41 /// A pointer to a cacheline which needs to be zeroed out.
42 static __inline__ void __DEFAULT_FN_ATTRS
43 _mm_clzero (void * __line)
44 {
45 __builtin_ia32_clzero ((void *)__line);
46 }
47
48 #undef __DEFAULT_FN_ATTRS
49
50 #endif /* __CLZEROINTRIN_H */
_mm_clzero
static __inline__ void __DEFAULT_FN_ATTRS _mm_clzero(void *__line)
Loads the cache line address and zero&#39;s out the cacheline.
Definition: clzerointrin.h:43
__DEFAULT_FN_ATTRS
#define __DEFAULT_FN_ATTRS
Definition: clzerointrin.h:31