if (operand2 instanceof Variable) { Variable v = (Variable) operand2;
if (refs[1] instanceof Variable) { Variable v = (Variable) refs[1];
	public void doPass2(BootableHashMap liveVariables) {		operand1 = operand1.simplify();		operand2 = operand2.simplify();		if (operand1 instanceof Variable) {			Variable v = (Variable) operand1;			v.setLastUseAddress(this.getAddress());			liveVariables.put(v, v);		}		if (operand2 instanceof Variable) {			Variable v = (Variable) operand2;			v.setLastUseAddress(this.getAddress());			liveVariables.put(v, v);		}	}