CMPBNE R3, $16, 2(PC)
	VLEIB  $12, $1, M_4

	// Finally, set up the coefficients for the final multiplication.
	// We have previously saved r and 5r in the 32-bit even indexes
	// of the R_[0-4] and R5_[1-4] coefficient registers.
	//
	// We want lane 0 to be multiplied by r² so that can be kept the
	// same. We want lane 1 to be multiplied by r so we need to move
	// the saved r value into the 32-bit odd index in lane 1 by