include/gmx_x86_sse2.h

   1 /*
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  35 #ifndef _gmx_x86_sse2_h_
  36 #define _gmx_x86_sse2_h_
  37
  38 #include <emmintrin.h>
  39
  40 #include <stdio.h>
  41
  42 #include "types/simple.h"
  43
  44
  45
  46 /* Create some basic definitions that are not 100% SSE2 standard and thus not
  47  * available on all compilers. These should be fairly self-evident by comparing
  48  * with an arbitrary emmintrin.h.
  49  */
  50
  51 #define gmx_mm_extract_epi32(x, imm) _mm_cvtsi128_si32(_mm_srli_si128((x), 4 * (imm)))
  52
  53 #define GMX_MM_TRANSPOSE2_PD(row0, row1) {           \
  54         __m128d __gmx_t1 = row0;                         \
  55         row0           = _mm_unpacklo_pd(row0, row1);     \
  56         row1           = _mm_unpackhi_pd(__gmx_t1, row1); \
  57 }
  58
  59
  60 #if (defined (_MSC_VER) || defined(__INTEL_COMPILER))
  61 #  define gmx_mm_castsi128_ps(a) _mm_castsi128_ps(a)
  62 #  define gmx_mm_castps_si128(a) _mm_castps_si128(a)
  63 #  define gmx_mm_castps_ps128(a) (a)
  64 #  define gmx_mm_castsi128_pd(a) _mm_castsi128_pd(a)
  65 #  define gmx_mm_castpd_si128(a) _mm_castpd_si128(a)
  66 #elif defined(__GNUC__)
  67 #  define gmx_mm_castsi128_ps(a) ((__m128)(a))
  68 #  define gmx_mm_castps_si128(a) ((__m128i)(a))
  69 #  define gmx_mm_castps_ps128(a) ((__m128)(a))
  70 #  define gmx_mm_castsi128_pd(a) ((__m128d)(a))
  71 #  define gmx_mm_castpd_si128(a) ((__m128i)(a))
  72 #else
  73 static __m128  gmx_mm_castsi128_ps(__m128i a)
  74 {
  75     return *(__m128 *) &a;
  76 }
  77 static __m128i gmx_mm_castps_si128(__m128 a)
  78 {
  79     return *(__m128i *) &a;
  80 }
  81 static __m128  gmx_mm_castps_ps128(__m128 a)
  82 {
  83     return *(__m128 *) &a;
  84 }
  85 static __m128d gmx_mm_castsi128_pd(__m128i a)
  86 {
  87     return *(__m128d *) &a;
  88 }
  89 static __m128i gmx_mm_castpd_si128(__m128d a)
  90 {
  91     return *(__m128i *) &a;
  92 }
  93 #endif
  94
  95
  96 static void
  97 gmx_mm_printxmm_ps(const char *s, __m128 xmm)
  98 {
  99     float f[4];
 100
 101     _mm_storeu_ps(f, xmm);
 102     printf("%s: %15.10e %15.10e %15.10e %15.10e\n", s, f[0], f[1], f[2], f[3]);
 103 }
 104
 105
 106 static void
 107 gmx_mm_printxmmsum_ps(const char *s, __m128 xmm)
 108 {
 109     float f[4];
 110
 111     _mm_storeu_ps(f, xmm);
 112     printf("%s (sum): %15.10g\n", s, f[0]+f[1]+f[2]+f[3]);
 113 }
 114
 115
 116 static void
 117 gmx_mm_printxmm_pd(const char *s, __m128d xmm)
 118 {
 119     double f[2];
 120
 121     _mm_storeu_pd(f, xmm);
 122     printf("%s: %30.20e %30.20e\n", s, f[0], f[1]);
 123 }
 124
 125 static void
 126 gmx_mm_printxmmsum_pd(const char *s, __m128d xmm)
 127 {
 128     double f[2];
 129
 130     _mm_storeu_pd(f, xmm);
 131     printf("%s (sum): %15.10g\n", s, f[0]+f[1]);
 132 }
 133
 134
 135 static void
 136 gmx_mm_printxmm_epi32(const char *s, __m128i xmmi)
 137 {
 138     int i[4];
 139
 140     _mm_storeu_si128((__m128i *)i, xmmi);
 141     printf("%10s: %2d %2d %2d %2d\n", s, i[0], i[1], i[2], i[3]);
 142 }
 143
 144
 145
 146 static int gmx_mm_check_and_reset_overflow(void)
 147 {
 148     int MXCSR;
 149     int sse_overflow;
 150
 151     MXCSR = _mm_getcsr();
 152     /* The overflow flag is bit 3 in the register */
 153     if (MXCSR & 0x0008)
 154     {
 155         sse_overflow = 1;
 156         /* Set the overflow flag to zero */
 157         MXCSR = MXCSR & 0xFFF7;
 158         _mm_setcsr(MXCSR);
 159     }
 160     else
 161     {
 162         sse_overflow = 0;
 163     }
 164
 165     return sse_overflow;
 166 }
 167
 168
 169 #endif /* _gmx_x86_sse2_h_ */