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Open Source Computer Vision Library https://opencv.org/
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opencv/cmake/checks/cpu_avx512common.cpp

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Merge pull request #14007 from seiko2plus:core_avx512_infa * core: improve AVX512 infrastructure by adding more CPU features groups * cmake: use groups for AVX512 optimization flags * core: remove gap in CPU flags enumeration * cmake: restore default CPU_DISPATCH
6 years ago
#if defined __AVX512__ || defined __AVX512F__
#include <immintrin.h>
void test()
{
__m512i zmm = _mm512_setzero_si512();
zmm = _mm512_lzcnt_epi32(zmm);
#if defined __GNUC__ && defined __x86_64__
asm volatile ("" : : : "zmm16", "zmm17", "zmm18", "zmm19");
#endif
}
#else
#error "AVX512-COMMON is not supported"
#endif
int main() { return 0; }