During November 2024, Daniel Sampaio enhanced the JuliaGPU/pocl repository by delivering forward-compatibility with LLVM 20, focusing on both build system and compiler development. He updated the build configuration using CMake and C++ to detect LLVM 20, renamed macros to resolve naming conflicts, and adapted the diagnostics API to align with new LLVM requirements. To address stability, Daniel fixed a diagnostics crash by initializing a real filesystem context, ensuring reliable operation under LLVM 20+. His work reduced upgrade risk and improved developer experience, demonstrating a strong grasp of system programming and the intricacies of maintaining cross-version compatibility in complex codebases.