this.operand = getOperand(varIndex); refs = new Operand[] { operand };
refs = new Operand[] { getOperand(varIndex) };
	public UnaryQuad(int address, IRBasicBlock block, int lhsIndex,		int operation, int varIndex) {		super(address, block, lhsIndex);		this.operation = operation;		this.operand = getOperand(varIndex);		refs = new Operand[] { operand };	}