During May 2025, Ben Norris focused on upgrading the onnx/onnx-mlir repository to ensure compatibility with LLVM 43.x, addressing the evolving requirements of ONNX operations and MLIR dialects. He updated TOSA dialect operations and NNPA accelerator conversions, refining general MLIR dialect handling to align with the new LLVM release. Using C++ and Shell, Ben validated these changes through comprehensive CI and test coverage, minimizing upgrade risks and stabilizing builds. His work in compiler development and runtime integration enabled downstream teams to confidently adopt newer LLVM versions, reflecting a deep understanding of both the ONNX Runtime ecosystem and modern compiler toolchains.