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1 /*===---- clwbintrin.h - CLWB intrinsic ------------------------------------===
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2 *
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3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 * See https://llvm.org/LICENSE.txt for license information.
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5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 *
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7 *===-----------------------------------------------------------------------===
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8 */
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9
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10 #ifndef __IMMINTRIN_H
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11 #error "Never use <clwbintrin.h> directly; include <immintrin.h> instead."
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12 #endif
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13
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14 #ifndef __CLWBINTRIN_H
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15 #define __CLWBINTRIN_H
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16
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17 /* Define the default attributes for the functions in this file. */
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18 #define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("clwb")))
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19
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20 /// Writes back to memory the cache line (if modified) that contains the
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21 /// linear address specified in \a __p from any level of the cache hierarchy in
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22 /// the cache coherence domain
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23 ///
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24 /// \headerfile <immintrin.h>
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25 ///
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26 /// This intrinsic corresponds to the <c> CLWB </c> instruction.
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27 ///
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28 /// \param __p
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29 /// A pointer to the memory location used to identify the cache line to be
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30 /// written back.
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31 static __inline__ void __DEFAULT_FN_ATTRS
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32 _mm_clwb(void const *__p) {
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33 __builtin_ia32_clwb(__p);
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34 }
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35
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36 #undef __DEFAULT_FN_ATTRS
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37
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38 #endif
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