@kbeyls

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459 Following
227 Posts
Arm Fellow. LLVM Foundation board member. Compilers, security, efficiency, performance. Recently started https://github.com/llsoftsec/llsoftsecbook/. Views are my own.

I'm fundamentally a tool builder, and LLM coding agents work one million times better if you give them good tools, and I wrote a thing about this

https://john.regehr.org/writing/zero_dof_programming.html

zero_dof_programming

Since I got asked lately about running the #LLVM #Meetup I did a quick and brief blog post about it.

Check it out and don’t expect too deep insights. But if you do, even better!

https://jplehr.de/2026/03/16/running-llvm-meetup/

Running LLVM Meetup – jplehr.de

We surpassed 200 members in the #LLVM #Meetup #Darmstadt group on meetup. Incredible honestly.

I met quite a few new and cool people through this meetup and think it’s been an amazing ride.

Thank you! 😊

If you are in the area, Wednesday is the next one with Tim Heldman talking about the various points to hook into the #compiler for tooling.

🇮🇪 Join us at EuroLLVM 2026 in Dublin, April 13–15

Early bird registration ends this Friday, March 13. If you’re working on compilers, toolchains, security, or AI infrastructure, this is an amazing event to connect with the global LLVM community!

https://llvm.swoogo.com/2026eurollvm/

2026 European LLVM Developers' Meeting

It's the luck of the Irish! We have extended early bird registration for the 2026 EuroLLVM in Dublin, Ireland through Friday! https://llvm.swoogo.com/2026eurollvm
2026 European LLVM Developers' Meeting

Great language support means nothing without great tooling. Watch @jdevlieghere show how LLDB brings first-class debugging to Swift on WebAssembly. https://fosdem.org/2026/schedule/event/87ZLQV-wasm-debugging-lldb/ #Wasm #fosdem

won't say I'm totally proud of myself here, but once I saw that the Claude C compiler was super buggy according to YARPGen and Csmith, I had a hard time preventing myself from doing something about it

https://john.regehr.org/writing/claude_c_compiler.html

claude_c_compiler

This has been brewing for awhile at work but finally the announcement is public. Previously to join in the collaborative engineering at #linaro you started with a discussion about membership costs and engineering commitment. The new #corecollective removes the financial barrier to entry so more people can be involved in working out what is needed before working out how to fund that work: https://www.linaro.org/news/linaro-addresses-the-demands-of-the-next-era-of-ai-and-compute-with-new-model-and-brings-open-collaboration-to-all/
Linaro Addresses the Demands of the Next Era of AI and Compute with New Model and Brings Open Collaboration to All | Newsroom | Linaro

Linaro introduces the CoreCollective - a neutral, open consortium backed by Arm that brings the ecosystem together to solve shared software challenges

FOSDEM 2026 - Zero-sysroot hermetic LLVM cross-compilation using Bazel

I just published the first version of my illustrated SVE (ARMv9 SIMD) instruction list, with a truly absurd number of instruction diagrams and descriptions.

Check it out at https://dougallj.github.io/asil/

A64 SIMD Instruction List: SVE Instructions