RISC-V Global Forum 2020

The absence of a JavaScript engine on RISC-V is an important gap in the RISC-V software ecosystem. This talk presents our efforts to develop a RISC-V backend for V8, the most popular JS engine today. I will provide an overview of the V8 architecture and get into some details about the target-specific parts that required the most porting effort. I discuss our porting strategy and the lessons that we have learned along the way. I will then share some demos of our working port, which currently passes 95%+ of V8 test cases and supports both JavaScript and WebAssembly. This V8 RISC-V port is an ongoing open-source effort. We will conclude the talk with the development roadmap and invite participation from community developers as well as early adopters.