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