发明授权
- 专利标题: Early exit transformations for software pipelining
- 专利标题(中): 软件流水线的早期退出转换
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申请号: US09273947申请日: 1999-03-22
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公开(公告)号: US06571385B1公开(公告)日: 2003-05-27
- 发明人: Kalyan Muthukumar , Dong-Yuan Chen , Youfeng Wu , Daniel M. Lavery
- 申请人: Kalyan Muthukumar , Dong-Yuan Chen , Youfeng Wu , Daniel M. Lavery
- 主分类号: G06F944
- IPC分类号: G06F944
摘要:
The invention is directed to the transformation of software loops having early exit conditions, thereby allowing the loops to be more effectively converted to a single basic block for software pipelining. The invention assigns a predicate register for each early exit condition of the software loop. The predicate registers are set when the corresponding early exit condition is satisfied. In this manner, when the loop terminates the predicate registers can be examined to indicate which early exit conditions were satisfied. The invention produces loops having a lower recurrence II and resource II than conventional techniques.
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