Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

Rev

Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
14 pmbaty 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 */