x = uint64(a) & 0xFF
	// ppc64x: -"MOVH\t", -"ANDCC", "MOVHZ"
	y = uint64(b) & 0xFFFF
	return
}

// Verify rotate and mask instructions, and further simplified instructions for small types
func bitRotateAndMask(io64 [8]uint64, io32 [4]uint32, io16 [4]uint16, io8 [4]uint8) {
	// ppc64x: "RLDICR\t[$]0, R[0-9]*, [$]47, R"
	io64[0] = io64[0] & 0xFFFFFFFFFFFF0000
	// ppc64x: "RLDICL\t[$]0, R[0-9]*, [$]16, R"