union { Bitboard bb; uint16_t u[4]; } v = { b };
return PopCnt16[v.u[0]] + PopCnt16[v.u[1]] + PopCnt16[v.u[2]] + PopCnt16[v.u[3]];
-#elif defined(_MSC_VER) && defined(__INTEL_COMPILER)
+#elif defined(_MSC_VER) || defined(__INTEL_COMPILER)
return _mm_popcnt_u64(b);