6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
/*===---- prfchwintrin.h - PREFETCHW intrinsic -----------------------------===
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*
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* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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* See https://llvm.org/LICENSE.txt for license information.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*
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*===-----------------------------------------------------------------------===
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*/
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#if !defined(__X86INTRIN_H) && !defined(_MM3DNOW_H_INCLUDED)
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#error "Never use <prfchwintrin.h> directly; include <x86intrin.h> instead."
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#endif
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#ifndef __PRFCHWINTRIN_H
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#define __PRFCHWINTRIN_H
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/// Loads a memory sequence containing the specified memory address into
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/// all data cache levels.
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///
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/// The cache-coherency state is set to exclusive. Data can be read from
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/// and written to the cache line without additional delay.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the \c PREFETCHT0 instruction.
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///
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/// \param __P
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/// A pointer specifying the memory address to be prefetched.
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static __inline__ void __attribute__((__always_inline__, __nodebug__))
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_m_prefetch(void *__P)
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{
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__builtin_prefetch (__P, 0, 3 /* _MM_HINT_T0 */);
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}
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/// Loads a memory sequence containing the specified memory address into
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/// the L1 data cache and sets the cache-coherency state to modified.
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///
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/// This provides a hint to the processor that the cache line will be
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/// modified. It is intended for use when the cache line will be written to
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/// shortly after the prefetch is performed.
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///
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/// Note that the effect of this intrinsic is dependent on the processor
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/// implementation.
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///
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/// \headerfile <x86intrin.h>
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///
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/// This intrinsic corresponds to the \c PREFETCHW instruction.
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///
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/// \param __P
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/// A pointer specifying the memory address to be prefetched.
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static __inline__ void __attribute__((__always_inline__, __nodebug__))
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_m_prefetchw(volatile const void *__P)
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{
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wcast-qual"
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__builtin_prefetch ((const void*)__P, 1, 3 /* _MM_HINT_T0 */);
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#pragma clang diagnostic pop
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}
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#endif /* __PRFCHWINTRIN_H */
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