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1 | /*===----------------------- clzerointrin.h - CLZERO ----------------------=== |
---|---|
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 | #ifndef __X86INTRIN_H |
10 | #error "Never use <clzerointrin.h> directly; include <x86intrin.h> instead." |
11 | #endif |
12 | |
13 | #ifndef __CLZEROINTRIN_H |
14 | #define __CLZEROINTRIN_H |
15 | |
16 | /* Define the default attributes for the functions in this file. */ |
17 | #define __DEFAULT_FN_ATTRS \ |
18 | __attribute__((__always_inline__, __nodebug__, __target__("clzero"))) |
19 | |
20 | /// Zeroes out the cache line for the address \a __line. This uses a |
21 | /// non-temporal store. Calling \c _mm_sfence() afterward might be needed |
22 | /// to enforce ordering. |
23 | /// |
24 | /// \headerfile <x86intrin.h> |
25 | /// |
26 | /// This intrinsic corresponds to the \c CLZERO instruction. |
27 | /// |
28 | /// \param __line |
29 | /// An address within the cache line to zero out. |
30 | static __inline__ void __DEFAULT_FN_ATTRS |
31 | _mm_clzero (void * __line) |
32 | { |
33 | __builtin_ia32_clzero ((void *)__line); |
34 | } |
35 | |
36 | #undef __DEFAULT_FN_ATTRS |
37 | |
38 | #endif /* __CLZEROINTRIN_H */ |
39 |
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