Kristof Beyls
Senior Technical Director And Fellow at Arm
Ghent Metropolitan Area Belgium
Summary
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RockstarKristof Beyls is a senior technical leader and Fellow at Arm with 14 years of systems and compiler-focused engineering experience, and a long-standing member of the LLVM Foundation board. He combines deep back-end and performance expertise—evidenced by substantive contributions to the LLVM project and llvm-test-suite, including AArch64 Neon intrinsics tests, BOLT performance fixes, and enhancements to test and performance-data tooling. Known for tackling low-level memory and parallelism regressions and for structuring binary-analysis tooling, he bridges research-grade compiler internals with pragmatic engineering that improves real-world toolchains. Based in the Ghent metropolitan area, he brings both governance experience and hands-on technical impact across high-profile open-source compiler infrastructure.
14 years of coding experience
Github Skills (23)
c-language10
performance-analytics10
performance-monitor10
code-profiling10
llvm10
testing10
bolt10
binarydiff10
performance-analysis10
compile10
profiling10
compiler10
arm10
test-suite10
performance-monitoring10
Programming languages (10)
Github contributions (5)
llvm/llvm-test-suite
Nov 2014 - Nov 2020
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:20 commits, 3 pushes, 1 comment in 6 years 1 month
Contributions summary:Kristof primarily contributes to the test suite for the LLVM project. Their work involves adding new tests, particularly for AArch64 Neon intrinsics and frame layout, demonstrating an understanding of compiler optimization and code generation for different architectures. They have also made changes to the test framework, including modifications to lit scripts and the configuration of performance metrics. Furthermore, the user contributed to improve the collection and analysis of performance data within the test suite.
llvm/llvm-project
Jan 2023 - Jan 2023
The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.
Role in this project:Back-end Developer / Software Architect
Back-end Developer / Software ArchitectContributions:160 reviews, 1 commit, 40 PRs in 1 day
Contributions summary:Kristof primarily contributed to the LLVM project by fixing bugs and implementing performance improvements. Their work involved modifying the BOLT (Binary Optimization and Layout Tool) components, including fixing memory usage issues in parallel utilities and fixing regressions in regression tests. They also worked on documentation updates for the security reporting process and developer policies and introduced the initial structure for a BOLT-based binary analysis tool. In addition, the user made changes to the pac-ret gadget scanner.
compilerstechnologiesclangsubmittoolchain
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