27 lines
1004 B
C
27 lines
1004 B
C
#if defined(DETECT_FEATURES) && defined(__INTEL_COMPILER)
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/*
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* Unlike GCC and CLANG, Intel Compiler exposes all supported intrinsics,
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* whether or not the build options for those features are specified.
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* Therefore, we must test #definitions of CPU features when option native/host
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* is enabled via `--cpu-baseline` or through env var `CFLAGS` otherwise
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* the test will be broken and leads to enable all possible features.
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*/
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#if !defined(__AVX512VPOPCNTDQ__) || !defined(__AVX512BITALG__) || !defined(__AVX512VPOPCNTDQ__)
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#error "HOST/ARCH doesn't support IceLake AVX512 features"
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#endif
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#endif
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#include <immintrin.h>
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int main(int argc, char **argv)
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{
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__m512i a = _mm512_loadu_si512((const __m512i*)argv[argc-1]);
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/* VBMI2 */
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a = _mm512_shrdv_epi64(a, a, _mm512_setzero_si512());
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/* BITLAG */
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a = _mm512_popcnt_epi8(a);
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/* VPOPCNTDQ */
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a = _mm512_popcnt_epi64(a);
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return _mm_cvtsi128_si32(_mm512_castsi512_si128(a));
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}
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