发明授权
- 专利标题: Apparatus and method for floating-point exception prediction and recovery
- 专利标题(中): 浮点异常预测和恢复的装置和方法
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申请号: US10880713申请日: 2004-06-30
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公开(公告)号: US07373489B1公开(公告)日: 2008-05-13
- 发明人: Jeffrey S. Brooks , Paul J. Jordan , Rabin A. Sugumar
- 申请人: Jeffrey S. Brooks , Paul J. Jordan , Rabin A. Sugumar
- 申请人地址: US CA Santa Clara
- 专利权人: Sun Microsystems, Inc.
- 当前专利权人: Sun Microsystems, Inc.
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- 代理商 Robert C. Kowert; Anthony M. Petro
- 主分类号: G06F9/00
- IPC分类号: G06F9/00 ; G06F7/38 ; G06F9/44
摘要:
An apparatus and method for floating point exception prediction and recovery. In one embodiment, a processor may include instruction fetch logic configured to issue a first instruction from one of a plurality of threads and to successively issue a second instruction from another one of the plurality of threads. The processor may also include floating-point arithmetic logic configured to execute a floating-point instruction issued by the instruction fetch logic from a given one of the plurality of threads, and further configured to determine whether the floating-point instruction generates an exception, and may further include exception prediction logic configured to predict whether the floating-point instruction will generate the exception, where the prediction occurs before the floating-point arithmetic logic determines whether the floating-point instruction generates the exception.
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