LC-GRFA: Global register file assignment with local consciousness for VLIW DSP processors with non-uniform register files

Chia Han Lu, Yung Chia Lin, Yi-Ping You, Jenq Kuen Lee*

*Corresponding author for this work

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

Embedded processors developed within the past few years have employed novel hardware designs to reduce the ever-growing complexity, power dissipation, and die area. Although using a distributed register file architecture is considered to have less read/write ports than using traditional unified register file structures, it presents challenges in compilation techniques to generate efficient codes for such architectures. This paper presents a novel scheme for register allocation that includes global and local components on a VLIW DSP processor with distributed register files whose port access is highly restricted. In the scheme, an optimization phase performed prior to conventional global/local register allocation, named global/local register file assignment (RFA), is used to minimize various register file communication costs. A heuristic algorithm is proposed for global RFA to make suitable decisions based on local RFA. Experiments were performed by incorporating our schemes on a novel VLIW DSP processor with non-uniform register files. The results indicate that the compilation based on our proposed approach delivers significant performance improvements, compared with the solution without using our proposed global register allocation scheme.

原文English
頁(從 - 到)101-114
頁數14
期刊Concurrency Computation Practice and Experience
21
發行號1
DOIs
出版狀態Published - 1 一月 2009

指紋 深入研究「LC-GRFA: Global register file assignment with local consciousness for VLIW DSP processors with non-uniform register files」主題。共同形成了獨特的指紋。

引用此