name : cpu_avx512_skx.c #if defined(DETECT_FEATURES) && defined(__INTEL_COMPILER) /* * Unlike GCC and CLANG, Intel Compiler exposes all supported intrinsics, * whether or not the build options for those features are specified. * Therefore, we must test #definitions of CPU features when option native/host * is enabled via `--cpu-baseline` or through env var `CFLAGS` otherwise * the test will be broken and leads to enable all possible features. */ #if !defined(__AVX512VL__) || !defined(__AVX512BW__) || !defined(__AVX512DQ__) #error "HOST/ARCH doesn't support SkyLake AVX512 features" #endif #endif #include <immintrin.h> int main(int argc, char **argv) { __m512i aa = _mm512_abs_epi32(_mm512_loadu_si512((const __m512i*)argv[argc-1])); /* VL */ __m256i a = _mm256_abs_epi64(_mm512_extracti64x4_epi64(aa, 1)); /* DQ */ __m512i b = _mm512_broadcast_i32x8(a); /* BW */ b = _mm512_abs_epi16(b); return _mm_cvtsi128_si32(_mm512_castsi512_si128(b)); }