1 /*===----------------------- clzerointrin.h - CLZERO ----------------------=== 2 * 3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 * See https://llvm.org/LICENSE.txt for license information. 5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 * 7 *===-----------------------------------------------------------------------=== 8 */ 9 #if !defined __X86INTRIN_H && !defined __IMMINTRIN_H 10 #error "Never use <clzerointrin.h> directly; include <x86intrin.h> instead." 11 #endif 12 13 #ifndef __CLZEROINTRIN_H 14 #define __CLZEROINTRIN_H 15 16 /* Define the default attributes for the functions in this file. */ 17 #define __DEFAULT_FN_ATTRS \ 18 __attribute__((__always_inline__, __nodebug__, __target__("clzero"))) 19 20 /// Loads the cache line address and zero's out the cacheline 21 /// 22 /// \headerfile <clzerointrin.h> 23 /// 24 /// This intrinsic corresponds to the <c> CLZERO </c> instruction. 25 /// 26 /// \param __line 27 /// A pointer to a cacheline which needs to be zeroed out. 28 static __inline__ void __DEFAULT_FN_ATTRS 29 _mm_clzero (void * __line) 30 { 31 __builtin_ia32_clzero ((void *)__line); 32 } 33 34 #undef __DEFAULT_FN_ATTRS 35 36 #endif /* __CLZEROINTRIN_H */ 37