关键词: 控制相关 多媒体程序优化 多媒体扩展指令集 分支预测

Abstract:

With the rapid development of multimedia applications, many researches have focused on how to accelerate such workload. During the optimization of Ber keley Multimedia Workload, we find that heavy utilization of branch instructions in programs often increases the misprediction of processors with deep p  ipelines Therefore, it is very important to eliminate the branch instructions as many as possible. This paper proposes some methods to eliminate conditi onal branches on the hasis of conditional move instructions Furthermore, it ＂also makes a survey on the methods to rid the oontrol dependence with the   support of MiME （Multimedia Extensions）. These methods are applied to BMW （Berkeley Multimedia Workload） and a satisfactory speedup is obtained

Key words: （control-dependence, multimedia applications optimization, multimedia extensions, branch predication）