Yi Chen
Staff Software Engineer at SiFive
Taiwan
Summary
🤩
Rockstar🎓
Top SchoolYi Chen is a Staff Software Engineer based in Taiwan with six years of focused experience in compiler and toolchain development, particularly for RISC-V and EVL vectorization in LLVM. At SiFive he led support for interleaved accesses, fixed-order recurrence, and reduction idioms, and previously built compiler analysis tooling and CI/CD systems from scratch. His contributions to the upstream llvm-project include targeted improvements for scalable vectors and in-loop reductions, reflecting both deep algorithmic understanding and practical engineering for production toolchains. A master's-trained compiler specialist, he combines low-level code generation expertise with hands-on performance analysis to make compilers more efficient and compact—often surfacing optimizations that benefit real hardware backends.
7 years of coding experience
9 years of employment as a software developer
Master's degree, Computer Science, Master's degree, Computer Science at National Chiao Tung UniversityBachelor's degree, Computer Science and Information Engineering, Bachelor's degree, Computer Science and Information Engineering at Chang Gung University
Chinese, English, Japanese, 泰語
Github Skills (12)
risc-v10
compiler-design10
c-language10
cprogramming-language10
vectorization10
llvm10
optimization9
optimisation9
numerical-optimization9
algorithm9
code-optimization9
algorithms9
Programming languages (6)
Github contributions (5)
llvm/llvm-project
Jul 2022 - Jul 2026
The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:470 reviews, 132 PRs, 79 pushes in 4 years
Contributions summary:Yi contributed to the LLVM project, focusing on compiler and toolchain technologies. Their work involved removing unnecessary function declarations and supporting interleaved accesses for scalable vectors, specifically for the RISC-V architecture. They also fixed the cost of min/max reductions and implemented support for in-loop reduction using tail folding with EVL.
compilerllvmtoolchain
Mel-Chen/llvm-project
Sep 2023 - Jul 2026
The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.
Contributions:405 pushes, 150 branches in 2 years 10 months
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