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Diffstat (limited to 'Source/3rdParty/SDL2/src/cpuinfo/SDL_simd.h')
-rw-r--r-- | Source/3rdParty/SDL2/src/cpuinfo/SDL_simd.h | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/Source/3rdParty/SDL2/src/cpuinfo/SDL_simd.h b/Source/3rdParty/SDL2/src/cpuinfo/SDL_simd.h deleted file mode 100644 index e2b28bc..0000000 --- a/Source/3rdParty/SDL2/src/cpuinfo/SDL_simd.h +++ /dev/null @@ -1,88 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ - -#include "SDL.h" -#include "../SDL_internal.h" - -/** - * \brief Report the alignment this system needs for SIMD allocations. - * - * This will return the minimum number of bytes to which a pointer must be - * aligned to be compatible with SIMD instructions on the current machine. - * For example, if the machine supports SSE only, it will return 16, but if - * it supports AVX-512F, it'll return 64 (etc). This only reports values for - * instruction sets SDL knows about, so if your SDL build doesn't have - * SDL_HasAVX512F(), then it might return 16 for the SSE support it sees and - * not 64 for the AVX-512 instructions that exist but SDL doesn't know about. - * Plan accordingly. - */ -extern size_t SDL_SIMDGetAlignment(void); - -/** - * \brief Allocate memory in a SIMD-friendly way. - * - * This will allocate a block of memory that is suitable for use with SIMD - * instructions. Specifically, it will be properly aligned and padded for - * the system's supported vector instructions. - * - * The memory returned will be padded such that it is safe to read or write - * an incomplete vector at the end of the memory block. This can be useful - * so you don't have to drop back to a scalar fallback at the end of your - * SIMD processing loop to deal with the final elements without overflowing - * the allocated buffer. - * - * You must free this memory with SDL_FreeSIMD(), not free() or SDL_free() - * or delete[], etc. - * - * Note that SDL will only deal with SIMD instruction sets it is aware of; - * for example, SDL 2.0.8 knows that SSE wants 16-byte vectors - * (SDL_HasSSE()), and AVX2 wants 32 bytes (SDL_HasAVX2()), but doesn't - * know that AVX-512 wants 64. To be clear: if you can't decide to use an - * instruction set with an SDL_Has*() function, don't use that instruction - * set with memory allocated through here. - * - * SDL_AllocSIMD(0) will return a non-NULL pointer, assuming the system isn't - * out of memory. - * - * \param len The length, in bytes, of the block to allocated. The actual - * allocated block might be larger due to padding, etc. - * \return Pointer to newly-allocated block, NULL if out of memory. - * - * \sa SDL_SIMDAlignment - * \sa SDL_SIMDFree - */ -extern void * SDL_SIMDAlloc(const size_t len); - -/** - * \brief Deallocate memory obtained from SDL_SIMDAlloc - * - * It is not valid to use this function on a pointer from anything but - * SDL_SIMDAlloc(). It can't be used on pointers from malloc, realloc, - * SDL_malloc, memalign, new[], etc. - * - * However, SDL_SIMDFree(NULL) is a legal no-op. - * - * \sa SDL_SIMDAlloc - */ -extern void SDL_SIMDFree(void *ptr); - -/* vi: set ts=4 sw=4 expandtab: */ - |