Viewing file:  cpu_popcnt.c (1.02 KB) -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 vr `CFLAGS` otherwise
* the test will be broken and leads to enable all possible features.
*/
#if !defined(__SSE4_2__) && !defined(__POPCNT__)
#error "HOST/ARCH doesn't support POPCNT"
#endif
#endif
#ifdef _MSC_VER
#include <nmmintrin.h>
#else
#include <popcntintrin.h>
#endif
int main(int argc, char **argv)
{
// To make sure popcnt instructions are generated
// and been tested against the assembler
unsigned long long a = *((unsigned long long*)argv[argc-1]);
unsigned int b = *((unsigned int*)argv[argc-2]);
#if defined(_M_X64) || defined(__x86_64__)
a = _mm_popcnt_u64(a);
#endif
b = _mm_popcnt_u32(b);
return (int)a + b;
}
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