clwbintrin.h (1229B) - Raw
1 /*===---- clwbintrin.h - CLWB intrinsic ------------------------------------=== 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 10 #ifndef __IMMINTRIN_H 11 #error "Never use <clwbintrin.h> directly; include <immintrin.h> instead." 12 #endif 13 14 #ifndef __CLWBINTRIN_H 15 #define __CLWBINTRIN_H 16 17 /* Define the default attributes for the functions in this file. */ 18 #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("clwb"))) 19 20 /// Writes back to memory the cache line (if modified) that contains the 21 /// linear address specified in \a __p from any level of the cache hierarchy in 22 /// the cache coherence domain 23 /// 24 /// \headerfile <immintrin.h> 25 /// 26 /// This intrinsic corresponds to the <c> CLWB </c> instruction. 27 /// 28 /// \param __p 29 /// A pointer to the memory location used to identify the cache line to be 30 /// written back. 31 static __inline__ void __DEFAULT_FN_ATTRS 32 _mm_clwb(void const *__p) { 33 __builtin_ia32_clwb(__p); 34 } 35 36 #undef __DEFAULT_FN_ATTRS 37 38 #endif