27 lines
1004 B
C
27 lines
1004 B
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(__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));
|
||
|
|
}
|