public PhiAssignQuad(IRBasicBlock dfb, int lhsIndex) { this(dfb.getStartPC(), dfb, lhsIndex);
public PhiAssignQuad(int address, IRBasicBlock block, int lhsIndex) { super(address, block, lhsIndex); phi = new PhiOperand();
	public PhiAssignQuad(IRBasicBlock dfb, int lhsIndex) {		this(dfb.getStartPC(), dfb, lhsIndex);	}