1/*===---- prfchwintrin.h - PREFETCHW 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#if !defined(__X86INTRIN_H) && !defined(_MM3DNOW_H_INCLUDED)
11#error "Never use <prfchwintrin.h> directly; include <x86intrin.h> or <mm3dnow.h> instead."
12#endif
13
14#ifndef __PRFCHWINTRIN_H
15#define __PRFCHWINTRIN_H
16
17/// Loads a memory sequence containing the specified memory address into
18///    all data cache levels. The cache-coherency state is set to exclusive.
19///    Data can be read from and written to the cache line without additional
20///    delay.
21///
22/// \headerfile <x86intrin.h>
23///
24/// This intrinsic corresponds to the \c PREFETCHT0 instruction.
25///
26/// \param __P
27///    A pointer specifying the memory address to be prefetched.
28static __inline__ void __attribute__((__always_inline__, __nodebug__))
29_m_prefetch(void *__P)
30{
31  __builtin_prefetch (__P, 0, 3 /* _MM_HINT_T0 */);
32}
33
34/// Loads a memory sequence containing the specified memory address into
35///    the L1 data cache and sets the cache-coherency to modified. This
36///    provides a hint to the processor that the cache line will be modified.
37///    It is intended for use when the cache line will be written to shortly
38///    after the prefetch is performed.
39///
40///    Note that the effect of this intrinsic is dependent on the processor
41///    implementation.
42///
43/// \headerfile <x86intrin.h>
44///
45/// This intrinsic corresponds to the \c PREFETCHW instruction.
46///
47/// \param __P
48///    A pointer specifying the memory address to be prefetched.
49static __inline__ void __attribute__((__always_inline__, __nodebug__))
50_m_prefetchw(void *__P)
51{
52  __builtin_prefetch (__P, 1, 3 /* _MM_HINT_T0 */);
53}
54
55#endif /* __PRFCHWINTRIN_H */
56