internal static v128 ByteToShort(v128 x) { if (Sse4_1.IsSse41Supported) { return(Sse4_1.cvtepu8_epi16(x)); } else if (Sse2.IsSse2Supported) { return(Sse2.unpacklo_epi8(x, default(v128))); } else { throw new CPUFeatureCheckException(); } }