کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
13431352 1842529 2020 43 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Guided just-in-time specialization
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
پیش نمایش صفحه اول مقاله
Guided just-in-time specialization
چکیده انگلیسی
JavaScript's portability across a vast ecosystem of browsers makes it today a core building block of the web. Yet, building efficient systems in JavaScript is still challenging. Because this language is so dynamic, JavaScript programs provide little information that just-in-time compilers can use to carry out safe optimizations. Motivated by this observation, we propose to guide the JIT compiler in the task of code specialization. To this end, we have augmented the language with an annotation that indicates which function call sites are likely to benefit from specialization. To support the automatic annotation of programs, we have introduced a novel static analysis that identifies profitable specialization points. We have implemented our ideas in JavaScriptCore, the built-in JavaScript engine for WebKit. The addition of guided specialization to this engine required us to change it in several non-trivial ways, which we describe in this paper. Such changes let us observe speedups of up to 1.7x on programs present in synthetic benchmarks.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of Computer Programming - Volume 185, 1 January 2020, 102318
نویسندگان
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