| IA-64中软件流水的寄存器需求研究 |
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| 引用本文： | 林海波,李文龙,汤志忠.IA-64中软件流水的寄存器需求研究[J].计算机研究与发展,2004,41(1):22-27. |
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| 作者姓名： | 林海波 李文龙 汤志忠 |
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| 作者单位： | 清华大学计算机科学与技术系,北京,100084 |
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| 基金项目： | 国家自然科学基金项目 ( 60 173 0 10 )，国家“八六三”高技术研究发展计划基金项目 ( 2 0 0 1AA1110 60) |
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| 摘 要： | 软件流水是开发循环程序指令级并行性的重要方法之一，IA-64是支持软件流水的EPIC体系结构，通过对NAS Benchmarks中可软件流水循环所需的寄存器进行量化分析，提出了一种限制循环展开因子的启发式算法，有效地解决了因可用寄存器不足而导致软件流水失败的问题，并提高了应用程序的执行速度。
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| 关 键 词： | 软件流水 IA-64 寄存器需求 |
Research on Register Requirements of Software Pipelined Loops in the IA-64 Architecture |
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| LIN Hai-Bo,LI Wen-Long,and TANG Zhi-Zhong.Research on Register Requirements of Software Pipelined Loops in the IA-64 Architecture[J].Journal of Computer Research and Development,2004,41(1):22-27. |
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| Authors: | LIN Hai-Bo LI Wen-Long and TANG Zhi-Zhong |
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| Abstract: | Software pipelining is a loop scheduling technique that extracts instruction level parallelism by overlapping the execution of several consecutive iterations. IA-64 is a new EPIC architecture that provides hardware support on software pipelining. The register requirements of software pipelined loops are evaluated, and a new heuristic algorithm is proposed to restrict unrolling factor. Experimental results show that the new algorithm increases the number of software pipelined loops and improves the performance of compiler. |
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| Keywords: | software pipelining IA-64 register requirements |
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