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simd: optional shuffle configuration to save move instructions

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Recep Aslantas
2018-04-04 22:42:21 +03:00
parent 967fb1afad
commit cfd3600107
1 changed files with 13 additions and 7 deletions
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20
include/cglm/simd/intrin.h
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@@ -20,15 +20,21 @@
# include <xmmintrin.h>
# include <emmintrin.h>
/* float */
# define _mm_shuffle1_ps(a, z, y, x, w) \
_mm_shuffle_ps(a, a, _MM_SHUFFLE(z, y, x, w))
/* OPTIONAL: You may save some instructions but latency (not sure) */
#ifdef CGLM_USE_INT_DOM_FOR_SHUFF
# define _mm_shuffle1_ps(xmm, z, y, x, w) \
_mm_castsi128_ps(_mm_shuffle_epi32(_mm_castps_si128(xmm), \
_MM_SHUFFLE(z, y, x, w)))
#else
# define _mm_shuffle1_ps(xmm, z, y, x, w) \
_mm_shuffle_ps(xmm, xmm, _MM_SHUFFLE(z, y, x, w))
#endif
# define _mm_shuffle1_ps1(a, x) \
_mm_shuffle_ps(a, a, _MM_SHUFFLE(x, x, x, x))
# define _mm_shuffle1_ps1(xmm, x) \
_mm_shuffle1_ps(xmm, x, x, x, x)
# define _mm_shuffle2_ps(a, b, z0, y0, x0, w0, z1, y1, x1, w1) \
_mm_shuffle1_ps(_mm_shuffle_ps(a, b, _MM_SHUFFLE(z0, y0, x0, w0)), \
# define _mm_shuffle2_ps(a, b, z0, y0, x0, w0, z1, y1, x1, w1) \
_mm_shuffle1_ps(_mm_shuffle_ps(a, b, _MM_SHUFFLE(z0, y0, x0, w0)), \
z1, y1, x1, w1)
#endif