標題: Instruction folding in Java processor
作者: Ton, LR
Chang, LC
Rao, MF
Tseng, HM
Shang, SS
Ma, RL
Wang, DC
Chung, CP
資訊工程學系
Department of Computer Science
關鍵字: Java processor;stack machine;stack operations folding
公開日期: 1997
摘要: Traditionally, the performance of a stack machine was limited by the true data dependency. A performance enhancement mechanism - Stack Operations Folding - was used in Srm Microelectronics' picoJava design [1][2] and it can reduce up to 60% of all stack operations. in this paper, we use the Java bytecode language as the targe; machine language, and study its instruction folding on a proposed machine model. Three folding strategies: 2-foldable, 3-foldable and 4-foldable, were simulated and evaluated. Statistical data show that our third folding strategy eliminates 73% of all stack operations, and each strategy fins an overall program speedup of 1.19, 1.25 and 1.26, respectively, as compared to a traditional stack machine. Moreover, a Java machine model suitable for instruction folding, together with its pipeline stages, are presented. lt seems to have the best cost/performance effectiveness of a Java stack machine if six bytes decoder width and the second folding strategy - the three-foldable strategy - are adopted.
URI: http://hdl.handle.net/11536/19674
ISBN: 0-8186-8227-2
期刊: 1997 INTERNATIONAL CONFERENCE ON PARALLEL AND DISTRIBUTED SYSTEMS, PROCEEDINGS
起始頁: 138
結束頁: 143
Appears in Collections:Conferences Paper