google/xls
Nov 2024 – Aug 2025
8 Months active
Languages Used
C++StarlarkDSLProtocol BuffersPROTOMake
Technical Skills
Build SystemsCode GenerationCompiler DesignCompiler DevelopmentIR TransformationPass Management
Ted Hong
PROFILE
Ted Hong
Ted Hong developed modular code generation infrastructure for the google/xls repository, focusing on pipeline architecture and hardware description workflows. Over eight months, Ted refactored the codegen pipeline into composable passes, enabling both combinational and pipelined generation, and introduced stage-to-block conversion for reusable hardware blocks. Using C++, SystemVerilog, and Protocol Buffers, Ted modernized stage conversion logic, improved metadata handling, and enhanced test automation with reusable fixtures. The work included integrating next-generation passes, streamlining flow control, and supporting robust testing, which improved maintainability and flexibility. Ted’s contributions established a foundation for scalable, testable pipelines and accelerated future feature delivery in XLS.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
24Total
Bugs
0
Commits
24
Features
12
Lines of code
12,562
Activity Months8
Your Network
4225 people
Work History
August 2025
8 Commits • 2 Features
Aug 1, 2025August 2025: Delivered two major feature areas in google/xls, focusing on modernizing the code generation pipeline and improving testability. The work enhances modularity, robustness, and maintainability, setting a solid foundation for future pipeline enhancements and faster delivery of features. Key outcomes include a redesigned stage conversion pipeline with block-level insertion, NG passes integrated into the unified generator pipeline with flow-control simplification, and strengthened testing utilities and compatibility (ABSEIL alignment).
8 Commits • 2 Features
Aug 1, 2025August 2025: Delivered two major feature areas in google/xls, focusing on modernizing the code generation pipeline and improving testability. The work enhances modularity, robustness, and maintainability, setting a solid foundation for future pipeline enhancements and faster delivery of features. Key outcomes include a redesigned stage conversion pipeline with block-level insertion, NG passes integrated into the unified generator pipeline with flow-control simplification, and strengthened testing utilities and compatibility (ABSEIL alignment).
August 2025
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for google/xls: Delivered Block-based Pipeline Stage to Block Representation enabling conversion of pipelined stages into reusable block components and stitching top-level blocks from stage-to-block conversions; achieved complete block representations from proc hierarchies including sub-block instantiation and channel connections. This work lays the groundwork for modular, testable pipelines and smoother integration with downstream systems.
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for google/xls: Delivered Block-based Pipeline Stage to Block Representation enabling conversion of pipelined stages into reusable block components and stitching top-level blocks from stage-to-block conversions; achieved complete block representations from proc hierarchies including sub-block instantiation and channel connections. This work lays the groundwork for modular, testable pipelines and smoother integration with downstream systems.
May 2025
3 Commits • 2 Features
May 1, 2025Monthly summary for 2025-05 focusing on key accomplishments and impact across google/xls. Highlighted work on streaming channel adapter, Verilog backend enhancements, and scaffolding for future stage passes; tests expanded to improve regression coverage.
3 Commits • 2 Features
May 1, 2025Monthly summary for 2025-05 focusing on key accomplishments and impact across google/xls. Highlighted work on streaming channel adapter, Verilog backend enhancements, and scaffolding for future stage passes; tests expanded to improve regression coverage.
May 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for google/xls: Delivered a new streaming channel slots concept and RDV utilities in the XLS codegen module, refactored test fixtures for reusable codegen NG tests, and introduced buffer-based attachment points around channel ports to enable adapters without changing core logic. This work enhances customization, testability, and integration readiness of the XLS codegen workflow.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for google/xls: Delivered a new streaming channel slots concept and RDV utilities in the XLS codegen module, refactored test fixtures for reusable codegen NG tests, and introduced buffer-based attachment points around channel ports to enable adapters without changing core logic. This work enhances customization, testability, and integration readiness of the XLS codegen workflow.
March 2025
2 Commits • 1 Features
Mar 1, 2025In March 2025, delivered a foundational refactor of the Codegen infrastructure for google/xls, focusing on encapsulation, stage conversion pipeline, and maintainability to support upcoming IR-to-IR codegen passes. The work realigns the codegen workflow into a more modular structure, improves metadata handling, and reduces risk for future changes while accelerating iteration on codegen passes.
2 Commits • 1 Features
Mar 1, 2025In March 2025, delivered a foundational refactor of the Codegen infrastructure for google/xls, focusing on encapsulation, stage conversion pipeline, and maintainability to support upcoming IR-to-IR codegen passes. The work realigns the codegen workflow into a more modular structure, improves metadata handling, and reduces risk for future changes while accelerating iteration on codegen passes.
March 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary: Focused on advancing architectural capabilities in google/xls by enabling function-to-pipelined-proc conversion. Delivered stage conversion refactor to support both functions and procs, with new C++ source/header files, tests, and build system updates. This lays groundwork for more composable pipelines, easier optimization, and improved testability.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025 monthly summary: Focused on advancing architectural capabilities in google/xls by enabling function-to-pipelined-proc conversion. Delivered stage conversion refactor to support both functions and procs, with new C++ source/header files, tests, and build system updates. This lays groundwork for more composable pipelines, easier optimization, and improved testability.
December 2024
5 Commits • 3 Features
Dec 1, 2024December 2024 focused on delivering a robust, observable codegen workflow and showcasing the next evolution of the XLS code generation pipeline. Key work included integrating the Next-Generation codegen pipeline (codegen_ng) across sample generation and fuzzer workflows, enabling improved performance visibility and more reliable metadata handling. We also expanded the fuzzer with combinational block generation from stateless procedures and introduced a DSLX-based XLS pipeline demo to illustrate a multi-stage, stateful pipeline. These efforts collectively improve reliability, test coverage, and pave the way for a planned refactor into a network of single-stage procs/blocks.
5 Commits • 3 Features
Dec 1, 2024December 2024 focused on delivering a robust, observable codegen workflow and showcasing the next evolution of the XLS code generation pipeline. Key work included integrating the Next-Generation codegen pipeline (codegen_ng) across sample generation and fuzzer workflows, enabling improved performance visibility and more reliable metadata handling. We also expanded the fuzzer with combinational block generation from stateless procedures and introduced a DSLX-based XLS pipeline demo to illustrate a multi-stage, stateful pipeline. These efforts collectively improve reliability, test coverage, and pave the way for a planned refactor into a network of single-stage procs/blocks.
December 2024
November 2024
2 Commits • 1 Features
Nov 1, 2024November 2024: Delivered a unified and modular codegen pipeline for google/xls, enabling both combinational and pipelined code generation via a version flag. The codegen was refactored into modular passes, separating function and procs conversions, and added passes for dead token removal and channel metadata updates, improving maintainability, reliability, and future flexibility. This work reduces engineering risk, speeds up iteration, and enables smoother experimentation with pipeline variants. Commits included: a87b3a1aa21852fd070fbdfa9ff438fea54e270c; ca797d1e4396997c6c9f6fcad2b783d6c7bbdfcb.
November 2024
2 Commits • 1 Features
Nov 1, 2024November 2024: Delivered a unified and modular codegen pipeline for google/xls, enabling both combinational and pipelined code generation via a version flag. The codegen was refactored into modular passes, separating function and procs conversions, and added passes for dead token removal and channel metadata updates, improving maintainability, reliability, and future flexibility. This work reduces engineering risk, speeds up iteration, and enables smoother experimentation with pipeline variants. Commits included: a87b3a1aa21852fd070fbdfa9ff438fea54e270c; ca797d1e4396997c6c9f6fcad2b783d6c7bbdfcb.
Activity
Loading activity data...
Quality Metrics
Correctness88.0%
Maintainability87.0%
Architecture89.2%
Performance70.8%
AI Usage20.8%
Skills & Technologies
Programming Languages
C++DSLMakePROTOProtocol BuffersStarlark
Technical Skills
API DesignBackend DevelopmentBuild SystemBuild System ConfigurationBuild SystemsC++C++ DevelopmentCADCode GenerationCode OrganizationCode RefactoringCompiler DesignCompiler DevelopmentDSL DevelopmentDigital Design
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline