| /*===---- prfchwintrin.h - PREFETCHW intrinsic -----------------------------=== |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| * |
| *===-----------------------------------------------------------------------=== |
| */ |
| |
| #if !defined(__X86INTRIN_H) && !defined(_MM3DNOW_H_INCLUDED) |
| #error "Never use <prfchwintrin.h> directly; include <x86intrin.h> or <mm3dnow.h> instead." |
| #endif |
| |
| #ifndef __PRFCHWINTRIN_H |
| #define __PRFCHWINTRIN_H |
| |
| /// Loads a memory sequence containing the specified memory address into |
| /// all data cache levels. The cache-coherency state is set to exclusive. |
| /// Data can be read from and written to the cache line without additional |
| /// delay. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the \c PREFETCHT0 instruction. |
| /// |
| /// \param __P |
| /// A pointer specifying the memory address to be prefetched. |
| static __inline__ void __attribute__((__always_inline__, __nodebug__)) |
| _m_prefetch(void *__P) |
| { |
| __builtin_prefetch (__P, 0, 3 /* _MM_HINT_T0 */); |
| } |
| |
| /// Loads a memory sequence containing the specified memory address into |
| /// the L1 data cache and sets the cache-coherency to modified. This |
| /// provides a hint to the processor that the cache line will be modified. |
| /// It is intended for use when the cache line will be written to shortly |
| /// after the prefetch is performed. |
| /// |
| /// Note that the effect of this intrinsic is dependent on the processor |
| /// implementation. |
| /// |
| /// \headerfile <x86intrin.h> |
| /// |
| /// This intrinsic corresponds to the \c PREFETCHW instruction. |
| /// |
| /// \param __P |
| /// A pointer specifying the memory address to be prefetched. |
| static __inline__ void __attribute__((__always_inline__, __nodebug__)) |
| _m_prefetchw(void *__P) |
| { |
| __builtin_prefetch (__P, 1, 3 /* _MM_HINT_T0 */); |
| } |
| |
| #endif /* __PRFCHWINTRIN_H */ |
