Xilinx/onnx-mlir
Mar 2025 – Sep 2025
4 Months active
Languages Used
C++MLIRTableGenYAMLCMakeShell
Technical Skills
Build SystemsC++CI/CDCode RefactoringCompiler DevelopmentMLIR
Matthias Gehre
PROFILE
Matthias Gehre
Matthias Gehre contributed to the Xilinx/onnx-mlir repository by architecting modular build systems and enhancing compiler reliability over a four-month period. He refactored ONNX-to-MLIR passes into a dedicated library, encapsulating dependencies and improving maintainability using CMake and C++. Matthias introduced structured configuration for ConvTranspose decomposition, enabling forward-compatible options and eliminating global state. He stabilized CI builds by switching to ccache and addressed critical build issues, such as resolving template specialization conflicts with explicit forward declarations. His work reduced build times, improved artifact management, and ensured alignment with the LLVM AIE toolchain, demonstrating depth in build system configuration and compiler development.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
10Total
Bugs
2
Commits
10
Features
4
Lines of code
1,096
Activity Months4
Your Network
114 people
Work History
September 2025
1 Commits
Sep 1, 2025Month: 2025-09. Repository: Xilinx/onnx-mlir. Focused on stabilizing builds and addressing a critical symbol conflict. Key change implemented to fix a duplicate symbol error for getGenOpMix<ONNXRoundOp> by forward-declaring an explicit template specialization in ONNXToKrnlCommon.hpp, preventing improper instantiation of the generic template for ONNXRoundOp. This resolved linker conflicts and ensures correct specialization is used. Impact: improved build reliability for downstream ONNX models and reduced maintenance risk. No new features delivered this month; primary effort centered on bug fixes and codebase stabilization. Technologies/skills demonstrated include C++ templates, explicit template specialization, forward declarations, and build-system debugging.
1 Commits
Sep 1, 2025Month: 2025-09. Repository: Xilinx/onnx-mlir. Focused on stabilizing builds and addressing a critical symbol conflict. Key change implemented to fix a duplicate symbol error for getGenOpMix<ONNXRoundOp> by forward-declaring an explicit template specialization in ONNXToKrnlCommon.hpp, preventing improper instantiation of the generic template for ONNXRoundOp. This resolved linker conflicts and ensures correct specialization is used. Impact: improved build reliability for downstream ONNX models and reduced maintenance risk. No new features delivered this month; primary effort centered on bug fixes and codebase stabilization. Technologies/skills demonstrated include C++ templates, explicit template specialization, forward declarations, and build-system debugging.
September 2025
August 2025
3 Commits • 2 Features
Aug 1, 2025Monthly summary for 2025-08: Focused on architectural modularization and toolchain alignment for Xilinx/onnx-mlir, delivering a dedicated OMOnnxToMlirPasses library, consolidating dependencies, and updating the build to use the LLVM AIE fork. These changes improve maintainability, reduce coupling, and ensure a reproducible, Xilinx-aligned toolchain for ONNX-MLIR. Overall, the work accelerates development cycles and enhances build reliability while strengthening alignment with vendor toolchains.
August 2025
3 Commits • 2 Features
Aug 1, 2025Monthly summary for 2025-08: Focused on architectural modularization and toolchain alignment for Xilinx/onnx-mlir, delivering a dedicated OMOnnxToMlirPasses library, consolidating dependencies, and updating the build to use the LLVM AIE fork. These changes improve maintainability, reduce coupling, and ensure a reproducible, Xilinx-aligned toolchain for ONNX-MLIR. Overall, the work accelerates development cycles and enhances build reliability while strengthening alignment with vendor toolchains.
April 2025
1 Commits
Apr 1, 2025April 2025: Delivered a build-system hygiene improvement for Xilinx/onnx-mlir. Implemented the default-off behavior for test binaries when ONNX_MLIR_BUILD_TESTS=OFF, ensuring test binaries are not included in the ALL build, resulting in faster builds and lower disk usage. The change reduces unnecessary artifacts while preserving test coverage when tests are enabled. Commit 3d8d00a39a5079632f4514f08f26fa4f10edcc37.
1 Commits
Apr 1, 2025April 2025: Delivered a build-system hygiene improvement for Xilinx/onnx-mlir. Implemented the default-off behavior for test binaries when ONNX_MLIR_BUILD_TESTS=OFF, ensuring test binaries are not included in the ALL build, resulting in faster builds and lower disk usage. The change reduces unnecessary artifacts while preserving test coverage when tests are enabled. Commit 3d8d00a39a5079632f4514f08f26fa4f10edcc37.
April 2025
March 2025
5 Commits • 2 Features
Mar 1, 2025Month 2025-03 monthly summary for Xilinx/onnx-mlir focusing on key features delivered, major bug fixes, and overall impact. This period delivered two high-impact changes that improve configurability, reliability, and efficiency in CI, aligning with business goals of faster time-to-market and more robust MLIR-based optimization.
March 2025
5 Commits • 2 Features
Mar 1, 2025Month 2025-03 monthly summary for Xilinx/onnx-mlir focusing on key features delivered, major bug fixes, and overall impact. This period delivered two high-impact changes that improve configurability, reliability, and efficiency in CI, aligning with business goals of faster time-to-market and more robust MLIR-based optimization.
Activity
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Quality Metrics
Correctness89.0%
Maintainability89.0%
Architecture86.0%
Performance74.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++CMakeMLIRShellTableGenYAML
Technical Skills
Build System (CMake)Build System ConfigurationBuild SystemsC++CI/CDCMakeCode RefactoringCompiler DevelopmentDependency ManagementDevOpsMLIRONNX RuntimePass ManagementRefactoringTemplate Metaprogramming
Repositories Contributed To
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