llvm/circt
Dec 2024 – Feb 2025
2 Months active
Languages Used
C++VerilogMLIRSystemVerilog
Technical Skills
Compiler DevelopmentMLIRSystemVerilogVerilog HDLFormal VerificationHardware Description Languages
Hailong Sun
PROFILE
Hailong Sun
Hailong Sun contributed to the llvm/circt repository by enhancing the Verilog import process, focusing on accurate hierarchical naming and real-number support within the MLIR-based CIRCT flow. He developed HierarchicalNames.cpp to enable both upward and downward references, improving the representation of complex module interconnections. In addition, Hailong implemented real-number math and conversions for SystemVerilog real types, aligning with IEEE 1800-2017 standards. He also addressed a stability issue in the MooreToCore conversion path by fixing a crash related to block arguments and adding regression tests. His work leveraged C++, SystemVerilog, and compiler development expertise to improve reliability and design coverage.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
3Total
Bugs
1
Commits
3
Features
2
Lines of code
715
Activity Months2
Your Network
48 people
Work History
February 2025
2 Commits • 1 Features
Feb 1, 2025February 2025 focused on delivering real-number support in ImportVerilog and stabilizing the MooreToCore conversion path. Key outcomes include feature delivery for real-number math and conversions for SystemVerilog real types into CIRCT, aligned with IEEE 1800-2017; and a regression-tested bug fix addressing a crash in MooreToCore when block arguments are used as observed values for llhd.wait. These changes enhance design coverage, reliability, and downstream usability of CIRCT in real-number hardware design flows.
2 Commits • 1 Features
Feb 1, 2025February 2025 focused on delivering real-number support in ImportVerilog and stabilizing the MooreToCore conversion path. Key outcomes include feature delivery for real-number math and conversions for SystemVerilog real types into CIRCT, aligned with IEEE 1800-2017; and a regression-tested bug fix addressing a crash in MooreToCore when block arguments are used as observed values for llhd.wait. These changes enhance design coverage, reliability, and downstream usability of CIRCT in real-number hardware design flows.
February 2025
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for llvm/circt: Focused on improving Verilog import fidelity by adding hierarchical naming support within the MLIR-based CIRCT flow, enabling more accurate representation of complex module interconnections.
December 2024
1 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for llvm/circt: Focused on improving Verilog import fidelity by adding hierarchical naming support within the MLIR-based CIRCT flow, enabling more accurate representation of complex module interconnections.
Activity
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Quality Metrics
Correctness96.6%
Maintainability93.4%
Architecture96.6%
Performance93.4%
AI Usage26.6%
Skills & Technologies
Programming Languages
C++MLIRSystemVerilogVerilog
Technical Skills
Compiler DevelopmentFormal VerificationHardware Description LanguagesLow-Level SynthesisMLIRSystemVerilogTestingVerilog HDL
Repositories Contributed To
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