Abstract
Browser is the entry point to cloud computing services, and the performance of JavaScript, with which the web applications are built, has become critically important in the user experience. The key to achieving JavaScript execution efficiency is Just-in-time (JIT) compilation. At present, Firefox is one of the most popular cross platform browsers. However, there is no MIPS code generator in IonMonkey, Firefox’s next-generation optimizing JavaScript JIT compiler, leaving the un-performed interpreter the only option to execute JavaScript on MIPS platform in Firefox. In this paper, we managed to implement an efficient and reliable MIPS code generator for IonMonkey. We took an insight into the inner mechanism of IonMonkey, and solved a series of platform-related problems such as double-layer cross platform architecture, patch, jump source chain, and ABI. Additionally, we optimized IonMonkey based on MIPS architecture by using a series of methods such as short-distance jump optimization, range analysis for arithmetic operation, peephole optimization, etc. With the JIT porting and these optimizations, V8 benchmark scores ascended from 38.8 to 957, and the running time of Sunspider benchmark descended from 20428.7 ms to 2689.5 ms. The efficiency of JS engine was significantly improved on MIPS.
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Ren, T., Xue, S., Peng, F., Wang, Q., Gao, X. (2015). Efficient Implementation of MIPS Code Generator for the IonMonkey JavaScript Compiler. In: Chen, Y., Ienne, P., Ji, Q. (eds) Advanced Parallel Processing Technologies. APPT 2015. Lecture Notes in Computer Science(), vol 9231. Springer, Cham. https://doi.org/10.1007/978-3-319-23216-4_6
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DOI: https://doi.org/10.1007/978-3-319-23216-4_6
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