this.rhs = getOperand(rhsIndex); refs = new Operand[] { rhs };
refs = new Operand[] { getOperand(rhsIndex) };
	public VariableRefAssignQuad(int address, IRBasicBlock block, int lhsIndex, int rhsIndex) {		super(address, block, lhsIndex);		this.rhs = getOperand(rhsIndex);		refs = new Operand[] { rhs };		setDeadCode(true);	}