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专利名称：Overflow predictive arithmetic instruction
optimization using chaining
发明人：Judith Schwabe,Zhiqun Chen申请号：US10712919申请日：20031112公开号：US07107581B2公开日：20060912
专利附图：
摘要：A method for arithmetic expression optimization includes receiving an operatorand at least one operand of a first instruction defined for a first processor having a firstbase. The method also includes converting the first instruction to a second instruction
optimized for a second processor having a second base smaller than the first base whenoverflow is impossible based at least in part on the operator and the relationshipbetween the operand type and the second base. The method also includes convertinginstructions in an instruction chain to a wider base larger than the second base andsmaller or equal to the first base when the at least one operand carries potentialoverflow beyond the second base and when the operator is sensitive to overflow. Thechain is bounded by the second instruction and a third instruction that has beenpreviously optimized and is the source of the potential overflow.
申请人：Judith Schwabe,Zhiqun Chen
地址：Cleveland Heights OH US,Fremont CA US
国籍：US,US
代理机构：Gunnison, McKay & Hodgson, L.L.P.
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