System.out.println("\npopVariables block: " + block);
	private void popVariables(IRBasicBlock block) {		System.out.println("\npopVariables block: " + block);		Iterator it = block.getQuads().iterator();		while (it.hasNext()) {			Quad q = (Quad) it.next();			if (q instanceof AssignQuad) {				AssignQuad aq = (AssignQuad) q;				SSAStack st = getStack(aq.getLHS());				st.pop();			}		}	}