Anmolpreet Singh
Aayush Sharma
Meetesh Kalpesh Mehta
Manas Thakur
ABSTRACT
Multi-tiered virtual-machine (VM) environments with Just-In-Time (JIT) compilers are essential for optimizing dynamic language program performance, but comprehending and debugging them is challenging. In this paper, we introduce Derir; a novel tool for tackling this issue in the context of Ř, a JIT compiler for R. Derir demystifies Ř, catering to both beginners and experts. It allows users to inspect the system's runtime state, make modifications, and visualize contextual specializations. With a user-friendly interface and visualization features, Derir empowers developers to explore, experiment, and gain insights into the inner workings of a specializing JIT system. We evaluate the effectiveness and usability of our tool through real-world use cases, demonstrating its benefits in learning as well as debugging scenarios. We believe that our tool holds promise for enhancing the understanding and debugging of complex VMs.
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Index Terms
- Debugging Dynamic Language Features in a Multi-tier Virtual Machine
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