| 1 | /*===---- prfchwintrin.h - PREFETCHW intrinsic -----------------------------=== |
|---|---|
| 2 | * |
| 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 4 | * of this software and associated documentation files (the "Software"), to deal |
| 5 | * in the Software without restriction, including without limitation the rights |
| 6 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 7 | * copies of the Software, and to permit persons to whom the Software is |
| 8 | * furnished to do so, subject to the following conditions: |
| 9 | * |
| 10 | * The above copyright notice and this permission notice shall be included in |
| 11 | * all copies or substantial portions of the Software. |
| 12 | * |
| 13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 14 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 15 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 16 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 17 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 18 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 19 | * THE SOFTWARE. |
| 20 | * |
| 21 | *===-----------------------------------------------------------------------=== |
| 22 | */ |
| 23 | |
| 24 | #if !defined(__X86INTRIN_H) && !defined(_MM3DNOW_H_INCLUDED) |
| 25 | #error "Never use <prfchwintrin.h> directly; include <x86intrin.h> or <mm3dnow.h> instead." |
| 26 | #endif |
| 27 | |
| 28 | #ifndef __PRFCHWINTRIN_H |
| 29 | #define __PRFCHWINTRIN_H |
| 30 | |
| 31 | /// Loads a memory sequence containing the specified memory address into |
| 32 | /// all data cache levels. The cache-coherency state is set to exclusive. |
| 33 | /// Data can be read from and written to the cache line without additional |
| 34 | /// delay. |
| 35 | /// |
| 36 | /// \headerfile <x86intrin.h> |
| 37 | /// |
| 38 | /// This intrinsic corresponds to the \c PREFETCHT0 instruction. |
| 39 | /// |
| 40 | /// \param __P |
| 41 | /// A pointer specifying the memory address to be prefetched. |
| 42 | static __inline__ void __attribute__((__always_inline__, __nodebug__)) |
| 43 | _m_prefetch(void *__P) |
| 44 | { |
| 45 | __builtin_prefetch (__P, 0, 3 /* _MM_HINT_T0 */); |
| 46 | } |
| 47 | |
| 48 | /// Loads a memory sequence containing the specified memory address into |
| 49 | /// the L1 data cache and sets the cache-coherency to modified. This |
| 50 | /// provides a hint to the processor that the cache line will be modified. |
| 51 | /// It is intended for use when the cache line will be written to shortly |
| 52 | /// after the prefetch is performed. |
| 53 | /// |
| 54 | /// Note that the effect of this intrinsic is dependent on the processor |
| 55 | /// implementation. |
| 56 | /// |
| 57 | /// \headerfile <x86intrin.h> |
| 58 | /// |
| 59 | /// This intrinsic corresponds to the \c PREFETCHW instruction. |
| 60 | /// |
| 61 | /// \param __P |
| 62 | /// A pointer specifying the memory address to be prefetched. |
| 63 | static __inline__ void __attribute__((__always_inline__, __nodebug__)) |
| 64 | _m_prefetchw(void *__P) |
| 65 | { |
| 66 | __builtin_prefetch (__P, 1, 3 /* _MM_HINT_T0 */); |
| 67 | } |
| 68 | |
| 69 | #endif /* __PRFCHWINTRIN_H */ |
| 70 |