公开(公告)号：US20090198906A1

公开(公告)日：2009-08-06

申请号：US12024260

申请日：2008-02-01

申请人： Ravi K. Armilli ,  Balaram Sinharoy ,  William E. Speight ,  Lixin Zhang

发明人： Ravi K. Armilli ,  Balaram Sinharoy ,  William E. Speight ,  Lixin Zhang

IPC分类号： G06F12/00

CPC分类号： G06F12/1027 ,  G06F12/0862 ,  G06F12/0897 ,  G06F2212/6026 ,  G06F2212/681

摘要： A technique for performing data prefetching using multi-level indirect data prefetching includes determining a first memory address of a pointer associated with a data prefetch instruction. Content that is included in a first data block (e.g., a first cache line of a memory) at the first memory address is then fetched. A second memory address is then determined based on the content at the first memory address. Content that is included in a second data block (e.g., a second cache line) at the second memory address is then fetched (e.g., from the memory or another memory). A third memory address is then determined based on the content at the second memory address. Finally, a third data block (e.g., a third cache line) that includes another pointer or data at the third memory address is fetched (e.g., from the memory or the another memory).

摘要翻译： 使用多级间接数据预取来执行数据预取的技术包括确定与数据预取指令相关联的指针的第一存储器地址。 然后取出包含在第一存储器地址的第一数据块（例如，存储器的第一高速缓存行）中的内容。 然后基于第一存储器地址处的内容来确定第二存储器地址。 包含在第二存储器地址的第二数据块（例如，第二高速缓存行）中的内容然后被取出（例如，从存储器或另一个存储器）。 然后基于第二存储器地址处的内容来确定第三存储器地址。 最后，取出（例如，从存储器或另一个存储器）中包含第三存储器地址处的另一指针或数据的第三数据块（例如，第三高速缓存行）。