Viewing file:  cpu_avx512_icl.c (1004 B) -rw-r--r--
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#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(__AVX512VPOPCNTDQ__) || !defined(__AVX512BITALG__) || !defined(__AVX512VPOPCNTDQ__)
#error "HOST/ARCH doesn't support IceLake AVX512 features"
#endif
#endif
#include <immintrin.h>
int main(int argc, char **argv)
{
__m512i a = _mm512_loadu_si512((const __m512i*)argv[argc-1]);
/* VBMI2 */
a = _mm512_shrdv_epi64(a, a, _mm512_setzero_si512());
/* BITLAG */
a = _mm512_popcnt_epi8(a);
/* VPOPCNTDQ */
a = _mm512_popcnt_epi64(a);
return _mm_cvtsi128_si32(_mm512_castsi512_si128(a));
}
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