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计算机系统应用英文版:2016,25(12):92-99

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BWDSP10x上地址和数据谓词执行的编译优化

樊永朝^1,2, 郑启龙^1,2, 耿锐³, 王向前³, 王昊³

(1.中国科学技术大学安徽省高性能计算重点实验室, 合肥 230027;2.中国科学技术大学计算机科学与技术学院, 合肥 230027;3.中国电子科技集团公司第三十八研究所, 合肥 230088)

Compilation Optimization of Address and Data Predicated Execution on BWDSP10x

FAN Yong-Chao^1,2, ZHENG Qi-Long^1,2, GENG Rui³, WANG Xiang-Qian³, WANG Hao³

(1.Anhui High Performance Computing Key Laboratory, University of Science and Technology of China, Hefei 230027, China;2.School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China;3.No.38 th Research Institute, China Electronics Technology Group Corporation, Hefei 230088, China)

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本文已被：浏览 1262次下载 1762次
Received:March 22, 2016 Revised:June 12, 2016

中文摘要: 传统的谓词优化技术是在冯·诺伊曼体系结构计算机上实施的，仅对数据流进行优化，并没有考虑哈佛体系结构下指令和数据分开的情况.BWDSP10x是指令和数据分开的哈佛体系结构，它支持超长指令字，不仅提供了对数据谓词执行的支持也提供了对地址谓词执行的支持.特此提出了一种在区域上对两种谓词模式优化支持的方法，在进行两种比较之前，通过判断比较操作的两个操作数类型来分别实施两种模式的谓词优化，使得对地址的比较不用传输到通用寄存器中.实验结果表明该优化方法能显著地节省CPU的时间和带宽，大大减少了分支指令，使程序性能提高了28.4%.

中文关键词: 地址谓词执行数据谓词执行区域编译优化

Abstract:The traditional predicate optimization technique is based on the Von Neumann architecture,which considers the data flow optimization only.However,BWDSP10x is based on the Harvard architecture,which data and instructions are physically separated.It provides VLIW and supports not only data predicated execution but also address predicated execution.Hence,we present an optimization method for the two predicated execution technology based on the region.In this method,types of the two operands of comparison operation will be identified before the two kinds of operations are executed,and when addresses are compared,the two operands don't need to transfer to general registers.Experimental result shows that the optimization method can highly reduce the time and bandwidth of CPU,and reduce large numbers of branch instructions.The performance of programs tested is increased by 28.4 percent after the optimization.

keywords: address predicated execution data predicated execution region compilation optimization

文章编号： 中图分类号： 文献标志码：

基金项目:“核高基”重大专项（2012ZX01034-00-001）

Author Name	Affiliation
FAN Yong-Chao	Anhui High Performance Computing Key Laboratory, University of Science and Technology of China, Hefei 230027, China School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China
ZHENG Qi-Long	Anhui High Performance Computing Key Laboratory, University of Science and Technology of China, Hefei 230027, China School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China
GENG Rui	No.38 th Research Institute, China Electronics Technology Group Corporation, Hefei 230088, China
WANG Xiang-Qian	No.38 th Research Institute, China Electronics Technology Group Corporation, Hefei 230088, China
WANG Hao	No.38 th Research Institute, China Electronics Technology Group Corporation, Hefei 230088, China

Author Name	Affiliation
FAN Yong-Chao	Anhui High Performance Computing Key Laboratory, University of Science and Technology of China, Hefei 230027, China School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China
ZHENG Qi-Long	Anhui High Performance Computing Key Laboratory, University of Science and Technology of China, Hefei 230027, China School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China
GENG Rui	No.38 th Research Institute, China Electronics Technology Group Corporation, Hefei 230088, China
WANG Xiang-Qian	No.38 th Research Institute, China Electronics Technology Group Corporation, Hefei 230088, China
WANG Hao	No.38 th Research Institute, China Electronics Technology Group Corporation, Hefei 230088, China

引用文本：
樊永朝,郑启龙,耿锐,王向前,王昊.BWDSP10x上地址和数据谓词执行的编译优化.计算机系统应用,2016,25(12):92-99
FAN Yong-Chao,ZHENG Qi-Long,GENG Rui,WANG Xiang-Qian,WANG Hao.Compilation Optimization of Address and Data Predicated Execution on BWDSP10x.COMPUTER SYSTEMS APPLICATIONS,2016,25(12):92-99