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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(__AVX512ER__) || !defined(__AVX512PF__)
#error "HOST/ARCH doesn't support Knights Landing AVX512 features"
#endif
#endif
#include <immintrin.h>
int main(int argc, char **argv)
{
int base[128];
__m512d ad = _mm512_loadu_pd((const __m512d*)argv[argc-1]);
/* ER */
__m512i a = _mm512_castpd_si512(_mm512_exp2a23_pd(ad));
/* PF */
_mm512_mask_prefetch_i64scatter_pd(base, _mm512_cmpeq_epi64_mask(a, a), a, 1, _MM_HINT_T1);
return base[0];
}