public AssignQuad(int address, IRBasicBlock block, int lhsIndex) {
public AssignQuad(int address, IRBasicBlock block, Variable lhs) {
	public AssignQuad(int address, IRBasicBlock block, int lhsIndex) {		super(address, block);		this.variables = block.getVariables();		this.lhsIndex = lhsIndex;		this.lhs = (Variable) variables[lhsIndex].clone();		lhs.setAssignQuad(this);	}