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util: Header for SSE2 intrinsics portability.

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José Fonseca 2008-09-30 01:07:09 +09:00
parent 6607f2cf19
commit 906336cd7c
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src/gallium/auxiliary/util/u_sse.h Normal file
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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
/**
* @file
* SSE intrinsics portability header.
*
* Although the SSE intrinsics are support by all modern x86 and x86-64
* compilers, there are some intrisincs missing in some implementations
* (especially older MSVC versions). This header abstracts that away.
*/
#ifndef U_SSE_H_
#define U_SSE_H_
#include <xmmintrin.h>
#include <emmintrin.h>
/* MSVC before VC8 does not support the _mm_castxxx_yyy */
#if defined(_MSC_VER) && _MSC_VER < 1500
union __declspec(align(16)) m128_types {
__m128 m128;
__m128i m128i;
__m128d m128d;
};
static __inline __m128
_mm_castsi128_ps(__m128i a)
{
union m128_types u;
u.m128i = a;
return u.m128;
}
static __inline __m128i
_mm_castps_si128(__m128 a)
{
union m128_types u;
u.m128 = a;
return u.m128i;
}
#endif
#endif /* U_SSE_H_ */