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EDIT :: cpu_avx2.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. */ #ifndef __AVX2__ #error "HOST/ARCH doesn't support AVX2" #endif #endif #include <immintrin.h> int main(int argc, char **argv) { __m256i a = _mm256_abs_epi16(_mm256_loadu_si256((const __m256i*)argv[argc-1])); return _mm_cvtsi128_si32(_mm256_castsi256_si128(a)); }

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