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kaityo256/test.cpp

Created May 16, 2017 10:30
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AVX-512 sample
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test.cpp
#include <immintrin.h>
extern __attribute__((aligned(64))) double z[1000000];
typedef double v8df __attribute__((vector_size(64)));
typedef double v4df __attribute__((vector_size(32)));
void
func(int i, v4df &zl, v4df &zh){
v8df zi = _mm512_load_pd((double*)(z + i));
zl = _mm512_extractf64x4_pd(zi,0);
zh = _mm512_extractf64x4_pd(zi,1);
}
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kaityo256 commented May 16, 2017

Try following options.

$ icpc -O3 -xHOST -S test.cpp 
$ icpc -O3 -xMIC-AVX512 -S test.cpp

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