#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];
|
}
|
