src/gallium/auxiliary/util/u_sse.h

   1 /**************************************************************************
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   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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  27
  28 /**
  29  * @file
  30  * SSE intrinsics portability header.
  31  *
  32  * Although the SSE intrinsics are support by all modern x86 and x86-64
  33  * compilers, there are some intrisincs missing in some implementations
  34  * (especially older MSVC versions). This header abstracts that away.
  35  */
  36
  37 #ifndef U_SSE_H_
  38 #define U_SSE_H_
  39
  40 #include "pipe/p_config.h"
  41
  42 #if defined(PIPE_ARCH_SSE)
  43
  44 #include <emmintrin.h>
  45
  46
  47 /* MSVC before VC8 does not support the _mm_castxxx_yyy */
  48 #if defined(_MSC_VER) && _MSC_VER < 1500
  49
  50 union __declspec(align(16)) m128_types {
  51    __m128 m128;
  52    __m128i m128i;
  53    __m128d m128d;
  54 };
  55
  56 static __inline __m128
  57 _mm_castsi128_ps(__m128i a)
  58 {
  59    union m128_types u;
  60    u.m128i = a;
  61    return u.m128;
  62 }
  63
  64 static __inline __m128i
  65 _mm_castps_si128(__m128 a)
  66 {
  67    union m128_types u;
  68    u.m128 = a;
  69    return u.m128i;
  70 }
  71
  72 #endif /* defined(_MSC_VER) && _MSC_VER < 1500 */
  73
  74 #endif /* PIPE_ARCH_X86 || PIPE_ARCH_X86_64 */
  75
  76 #endif /* U_SSE_H_ */