if (rhs instanceof Variable) { Variable v = (Variable) rhs;
if (refs[0] instanceof Variable) { Variable v = (Variable) refs[0];
	public void doPass2(BootableHashMap liveVariables) {		setDeadCode(true);		if (rhs instanceof Variable) {			Variable v = (Variable) rhs;			v.setLastUseAddress(this.getAddress());			liveVariables.put(v, v);		}	}