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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 #ifndef __X86INTRIN_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 /// \brief 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 */
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
#define __DEFAULT_FN_ATTRS
Definition: clzerointrin.h:31