首页>
外国专利>
Branch prediction device with two levels of branch prediction cache
Branch prediction device with two levels of branch prediction cache
展开▼
机译:具有两级分支预测高速缓存的分支预测设备
展开▼
页面导航
摘要
著录项
相似文献
摘要
An improved branch prediction cache (BPC) scheme that utilizes a hybrid cache structure. The BPC provides two levels of branch information caching. The fully associative first level BPC is a shallow but wide structure (36 32-byte entries), which caches full prediction information for a limited number of branch instructions. The second direct mapped level BPC is a deep but narrow structure (256 2-byte entries), which caches only partial prediction information, but does so for a much larger number of branch instructions. As each branch instruction is fetched and decoded, its address is used to perform parallel look-ups in the two branch prediction caches.
展开▼