37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
|
/*===----------------------- clzerointrin.h - CLZERO ----------------------===
|
||
|
|
*
|
||
|
|
* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
||
|
|
* See https://llvm.org/LICENSE.txt for license information.
|
||
|
|
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
||
|
|
*
|
||
|
|
*===-----------------------------------------------------------------------===
|
||
|
|
*/
|
||
|
|
#if !defined __X86INTRIN_H && !defined __IMMINTRIN_H
|
||
|
|
#error "Never use <clzerointrin.h> directly; include <x86intrin.h> instead."
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef __CLZEROINTRIN_H
|
||
|
|
#define __CLZEROINTRIN_H
|
||
|
|
|
||
|
|
/* Define the default attributes for the functions in this file. */
|
||
|
|
#define __DEFAULT_FN_ATTRS \
|
||
|
|
__attribute__((__always_inline__, __nodebug__, __target__("clzero")))
|
||
|
|
|
||
|
|
/// Loads the cache line address and zero's out the cacheline
|
||
|
|
///
|
||
|
|
/// \headerfile <clzerointrin.h>
|
||
|
|
///
|
||
|
|
/// This intrinsic corresponds to the <c> CLZERO </c> instruction.
|
||
|
|
///
|
||
|
|
/// \param __line
|
||
|
|
/// A pointer to a cacheline which needs to be zeroed out.
|
||
|
|
static __inline__ void __DEFAULT_FN_ATTRS
|
||
|
|
_mm_clzero (void * __line)
|
||
|
|
{
|
||
|
|
__builtin_ia32_clzero ((void *)__line);
|
||
|
|
}
|
||
|
|
|
||
|
|
#undef __DEFAULT_FN_ATTRS
|
||
|
|
|
||
|
|
#endif /* __CLZEROINTRIN_H */
|