clash-lang/clash-compiler
Nov 2025 – Nov 2025
1 Month active
Languages Used
HaskellYAML
Technical Skills
Digital DesignFunctional ProgrammingHaskellTestingVerilog
Jon Fowler
PROFILE
Jon Fowler
Worked on the clash-lang/clash-compiler repository to enhance the Verilog backend, focusing on correctness and maintainability for hardware description generation. Addressed sign-extension handling for signed integer conversions such as fromEnum, toEnum, and fromIntegral, ensuring accurate signed representations in generated Verilog and introducing a dedicated test suite to prevent regressions. Also resolved inconsistencies in vector operation indexing for functions like map, imap, and zipWith, aligning them with Vec semantics to simplify design constraints and reduce potential errors. Utilized Haskell, Verilog, and testing frameworks to deliver these improvements, resulting in more reliable hardware mappings and streamlined downstream debugging.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
87
Activity Months1
Your Network
16 peopleWork History
November 2025
2 Commits • 1 Features
Nov 1, 2025Month: 2025-11 — This month, I advanced the Verilog backend in clash-lang/clash-compiler with two focused improvements that strengthen HDL correctness and reduce maintenance risk. Delivered a corrected sign-extension path for signed integer conversions (fromEnum, toEnum, fromIntegral) in the Verilog backend, supported by a dedicated test suite to prevent regressions. Also fixed inconsistency in indexing for vector operations (map, imap, zipWith) so inputs/outputs align with Vec semantics, simplifying constraints and reducing error-prone edge cases. These changes improve the reliability of generated Verilog, reduce downstream debugging time, and contribute to safer hardware mappings for signed data paths. Committed changes include 4f994a6cb7a623227851847de4bd2281b17336ae and fa72b441d48be6adf54dbabc116ba9950fe3e78c.
2 Commits • 1 Features
Nov 1, 2025Month: 2025-11 — This month, I advanced the Verilog backend in clash-lang/clash-compiler with two focused improvements that strengthen HDL correctness and reduce maintenance risk. Delivered a corrected sign-extension path for signed integer conversions (fromEnum, toEnum, fromIntegral) in the Verilog backend, supported by a dedicated test suite to prevent regressions. Also fixed inconsistency in indexing for vector operations (map, imap, zipWith) so inputs/outputs align with Vec semantics, simplifying constraints and reducing error-prone edge cases. These changes improve the reliability of generated Verilog, reduce downstream debugging time, and contribute to safer hardware mappings for signed data paths. Committed changes include 4f994a6cb7a623227851847de4bd2281b17336ae and fa72b441d48be6adf54dbabc116ba9950fe3e78c.
November 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
HaskellYAML
Technical Skills
Digital DesignFunctional ProgrammingHaskellTestingVerilog
Repositories Contributed To
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