发明名称 |
ASYNCHRONOUS LOOKAHEAD SECOND LEVEL BRANCH TARGET BUFFER |
摘要 |
Embodiments relate to asynchronous lookahead hierarchical branch prediction. An aspect includes a system for asynchronous lookahead hierarchical branch prediction. The system includes a first-level branch target buffer and a second-level branch target buffer coupled to a processing circuit. The processing circuit is configured to perform a method. The method includes receiving a search request to locate branch prediction information associated with a search address, and searching for an entry corresponding to the search request in the first-level branch target buffer. Based on failing to locate a matching entry in the first-level branch target buffer corresponding to the search request, a secondary search is initiated to locate entries in the second-level branch target buffer having a memory region corresponding to the search request. Based on locating the entries in the second-level branch target buffer, a bulk transfer of the entries is performed from the second-level branch target buffer. |
申请公布号 |
US2013339695(A1) |
申请公布日期 |
2013.12.19 |
申请号 |
US201213524311 |
申请日期 |
2012.06.15 |
申请人 |
BONANNO JAMES J.;GIRI AKASH V.;MAYER ULRICH;PRASKY BRIAN R.;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BONANNO JAMES J.;GIRI AKASH V.;MAYER ULRICH;PRASKY BRIAN R. |
分类号 |
G06F9/38 |
主分类号 |
G06F9/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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