
Andrew contributed to OpenXiangShan/circt and riscv/sail-riscv, focusing on build system modernization, documentation, and simulator accuracy. He enhanced documentation in OpenXiangShan/circt to clarify clock gating recognition for RTL power estimation, providing practical workarounds and improving onboarding for power analysis workflows using Markdown. In the same repository, Andrew centralized RTG attribute definitions and refactored CMake build scripts to follow MLIR-style conventions, streamlining configuration management and future development. For riscv/sail-riscv, he implemented configurable mtval handling in the simulator, updating Sail and configuration logic to align with the RISC-V Privileged Spec, thereby improving simulation fidelity and exception handling accuracy.

Month: 2025-09 — riscv/sail-riscv: Feature-focused month delivering configurable mtval handling for RISC-V exceptions to improve simulator accuracy and conformance with the RISC-V Privileged Spec. The change enables per-exception mtval behavior (zero or retain bits) and updates to configuration and core exception handling logic to support this. This work lays groundwork for broader testing across exception scenarios and improves debugging fidelity in simulation.
Month: 2025-09 — riscv/sail-riscv: Feature-focused month delivering configurable mtval handling for RISC-V exceptions to improve simulator accuracy and conformance with the RISC-V Privileged Spec. The change enables per-exception mtval behavior (zero or retain bits) and updates to configuration and core exception handling logic to support this. This work lays groundwork for broader testing across exception scenarios and improves debugging fidelity in simulation.
February 2025 monthly summary for OpenXiangShan/circt. Key features delivered include centralizing RTG attribute definitions and modernizing the build configuration. No major bugs fixed this month. Overall impact: improved RTG accessibility and maintainability, streamlined build system with MLIR-style CMake conventions, and consolidated project settings, enabling easier future attribute expansions and cross-repo collaboration. Technologies/skills demonstrated: CMake/MLIR-style builds, code refactoring, attribute consolidation, and cross-repo coordination between RTG and RTGTest.
February 2025 monthly summary for OpenXiangShan/circt. Key features delivered include centralizing RTG attribute definitions and modernizing the build configuration. No major bugs fixed this month. Overall impact: improved RTG accessibility and maintainability, streamlined build system with MLIR-style CMake conventions, and consolidated project settings, enabling easier future attribute expansions and cross-repo collaboration. Technologies/skills demonstrated: CMake/MLIR-style builds, code refactoring, attribute consolidation, and cross-repo coordination between RTG and RTGTest.
December 2024 monthly summary for OpenXiangShan/circt. Delivered documentation enhancement addressing clock gating recognition gaps in RTL-based power estimation tools. Added a dedicated documentation section explaining the issue and a practical workaround, including an example to generate if statements in always blocks to model clock gate behavior. The update is non-functional (NFC) and improves power-estimation accuracy and onboarding for RTL power analysis workflows. Commit tracked: 1edb784b04541f882a38669199d68783888c6d78.
December 2024 monthly summary for OpenXiangShan/circt. Delivered documentation enhancement addressing clock gating recognition gaps in RTL-based power estimation tools. Added a dedicated documentation section explaining the issue and a practical workaround, including an example to generate if statements in always blocks to model clock gate behavior. The update is non-functional (NFC) and improves power-estimation accuracy and onboarding for RTL power analysis workflows. Commit tracked: 1edb784b04541f882a38669199d68783888c6d78.
Overview of all repositories you've contributed to across your timeline