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 #ifndef __X86INTRIN_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 /// Zeroes out the cache line for the address \a __line. This uses a 21 /// non-temporal store. Calling \c _mm_sfence() afterward might be needed 22 /// to enforce ordering. 23 /// 24 /// \headerfile <x86intrin.h> 25 /// 26 /// This intrinsic corresponds to the \c CLZERO instruction. 27 /// 28 /// \param __line 29 /// An address within the cache line to zero out. 30 static __inline__ void __DEFAULT_FN_ATTRS 31 _mm_clzero (void * __line) 32 { 33 __builtin_ia32_clzero ((void *)__line); 34 } 35 36 #undef __DEFAULT_FN_ATTRS 37 38 #endif /* __CLZEROINTRIN_H */ 39