NDLI: Integrated prepass scheduling for a Java just-in-time compiler on the IA-64

Content Provider	IEEE Xplore Digital Library
Author	Inagaki, T. Komatsu, H. Nakatani, T.
Copyright Year	2003
Description	Author affiliation: Tokyo Res. Lab., IBM Japan Ltd., Japan (Inagaki, T.; Komatsu, H.; Nakatani, T.)
Abstract	We present a new integrated prepass scheduling (IPS) algorithm for a Java just-in-time (JIT) compiler which integrates register minimization into list scheduling. We use backtracking in the list scheduling when we have used up all the available registers. To reduce the overhead of backtracking, we incrementally maintain a set of candidate instructions for undoing scheduling. To maximize the ILP after undoing scheduling, we select an instruction chain with the smallest increase in the total execution time. We implemented our new algorithm in a production-level Java JIT compiler for the Intel Itanium processor. The experiment showed that, compared to the best known algorithm by Govindarajan et al., our IPS algorithm improved the performance by up to +1.8% while it reduced the compilation time for IPS by 58% on average.
Sponsorship	IEEE Comput. Soc. TC-uARCH ACM SIGMICRO
Starting Page	159
Ending Page	168
File Size	5377542
Page Count	10
File Format	PDF
ISBN	076951913X
DOI	10.1109/CGO.2003.1191542
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Java Optimizing compilers
Content Type	Text
Resource Type	Article

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