clang/lib/Headers/clwbintrin.h

   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