OpenBLAS/kernel/x86/cpuid_win.c

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#if defined(_MSC_VER) && !defined(__clang__)

#include<intrin.h>

void cpuid(int op, int *eax, int *ebx, int *ecx, int *edx)
{
  int cpuInfo[4] = {-1};
  __cpuid(cpuInfo, op);
  *eax = cpuInfo[0];
  *ebx = cpuInfo[1];
  *ecx = cpuInfo[2];
  *edx = cpuInfo[3];
}
#endif