Invention Grant
- Patent Title: Partial load/store forward prediction
- Patent Title (中): 部分负载/存储正向预测
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Application No.: US11200744Application Date: 2005-08-10
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Publication No.: US07376817B2Publication Date: 2008-05-20
- Inventor: Sudarshan Kadambi , Po-Yung Chang , Eric Hao
- Applicant: Sudarshan Kadambi , Po-Yung Chang , Eric Hao
- Applicant Address: US CA Santa Clara
- Assignee: P.A. Semi, Inc.
- Current Assignee: P.A. Semi, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Agent Lawrence J. Merkel
- Main IPC: G06F7/38
- IPC: G06F7/38 ; G06F9/00 ; G06F9/44

Abstract:
In one embodiment, a processor comprises a prediction circuit and another circuit coupled to the prediction circuit. The prediction circuit is configured to predict whether or not a first load instruction will experience a partial store to load forward (PSTLF) event during execution. A PSTLF event occurs if a plurality of bytes, accessed responsive to the first load instruction during execution, include at least a first byte updated responsive to a previous uncommitted store operation and also include at least a second byte not updated responsive to the previous uncommitted store operation. Coupled to receive the first load instruction, the circuit is configured to generate one or more load operations responsive to the first load instruction. The load operations are to be executed in the processor to execute the first load instruction, and a number of the load operations is dependent on the prediction by the prediction circuit.
Public/Granted literature
- US20070038846A1 Partial load/store forward prediction Public/Granted day:2007-02-15
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