推测多线程相关概念补遗

1.非规则程序：是指一类含有树、图、链表等数据结构比较复杂没有规律的程序。

2.live-ins:values consumed,but not produced by,the thread.

?? live-ins :those register and memory values that are consumed by the speculative thread and may be
computed by prior threads still in execution.

3.工作负载：