发明授权
US06934941B2 COMPILER FOR GENERATING RISC OBJECT CODE WHEREBY OPERATIONS ON BIT VARIABLES WRITTEN IN SOURCE CODE ARE EXECUTED BY PROCESSING BASED ON BIT JUDGEMENT OPERATIONS TO THEREBY REDUCE THE AMOUNT OF OBJECT CODE
失效
用于生成源代码上的字节变量上编写的RISC对象代码的编译器通过基于BIT判断操作的处理执行，以减少对象代码的数量
- 专利标题： COMPILER FOR GENERATING RISC OBJECT CODE WHEREBY OPERATIONS ON BIT VARIABLES WRITTEN IN SOURCE CODE ARE EXECUTED BY PROCESSING BASED ON BIT JUDGEMENT OPERATIONS TO THEREBY REDUCE THE AMOUNT OF OBJECT CODE
- 专利标题（中）： 用于生成源代码上的字节变量上编写的RISC对象代码的编译器通过基于BIT判断操作的处理执行，以减少对象代码的数量
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申请号： US09935686申请日： 2001-08-24
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公开(公告)号： US06934941B2公开(公告)日： 2005-08-23
- 发明人: Masahiro Kamiya , Kunitaka Egawa , Hiroshi Matsuda , Hideaki Ishihara
- 申请人： Masahiro Kamiya , Kunitaka Egawa , Hiroshi Matsuda , Hideaki Ishihara
- 申请人地址： JP Kariya
- 专利权人： Denso Corporation
- 当前专利权人： Denso Corporation
- 当前专利权人地址： JP Kariya
- 代理机构： Posz Law Group, PLC
- 优先权： JP2000-257184 20000828
- 主分类号： G06F9/308
- IPC分类号： G06F9/308 ; G06F9/32 ; G06F9/45
摘要：
A computer program compiler generates object code to be executed by a RISC type of CPU, whereby in effect each bit operational expression appearing in the source code, such as an AND operation on two bit variables, is converted to an operation whereby the respective values of the bit variables which are operands of that expression are judged, and a specific binary value is assigned as the result of the bit operational expression based upon the judgement results, to thereby substantially reduce the number of RISC object code instructions corresponding to such an operation.
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