clang
15.0.0git
lib
Headers
prfchwintrin.h
Go to the documentation of this file.
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.
28
static
__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.
49
static
__inline__
void
__attribute__
((__always_inline__, __nodebug__))
50
_m_prefetchw(
volatile
const
void
*
__P
)
51
{
52
#pragma clang diagnostic push
53
#pragma clang diagnostic ignored "-Wcast-qual"
54
__builtin_prefetch ((
const
void
*)
__P
, 1, 3
/* _MM_HINT_T0 */
);
55
#pragma clang diagnostic pop
56
}
57
58
#endif
/* __PRFCHWINTRIN_H */
__P
__inline unsigned int unsigned int unsigned int * __P
Definition:
bmi2intrin.h:25
__attribute__
static __inline__ void __attribute__((__always_inline__, __nodebug__)) _m_prefetch(void *__P)
Loads a memory sequence containing the specified memory address into all data cache levels.
Definition:
prfchwintrin.h:28
Generated on Wed Jul 20 2022 15:25:37 for clang by
1.8.17