发明名称 |
TARGET BRANCH PREDICTION USING CORRELATION OF LOCAL TARGET HISTORIES |
摘要 |
A system for predicting multiple targets for a single branch includes: a branch target buffer that includes a previous next address for an instruction and that receives an indirect instruction address to provide a first branch target prediction; a first branch table for capturing local past target information of an indirect branch in an encoded form; a second branch table which is a correlation table for storing potential branch targets based on a local branch history and which provides a second branch target prediction when the first branch target prediction is not successful; an exclusion predictor for inhibiting updates of inefficient entries; and a multiplexer to select the predicted target as output. |
申请公布号 |
US2009037708(A1) |
申请公布日期 |
2009.02.05 |
申请号 |
US20080246282 |
申请日期 |
2008.10.06 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
PARK IL;SERRANO MAURICIO J.;CHOI JONG-DEOK |
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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