jasmin-lang/jasmin
Nov 2024 – Jul 2025
8 Months active
Languages Used
OCamlMLShellDuneJazz
Technical Skills
Compiler DevelopmentFormal VerificationStatic AnalysisCode GenerationConfiguration ManagementDebugging Tools
Alexandre BOURBEILLON
PROFILE
Alexandre Bourbeillon
Alexandre Bourbeillon contributed to the jasmin-lang/jasmin repository by developing and refining core compiler features, focusing on assembly generation, static analysis, and linter improvements. He enhanced cross-architecture assembly printing for x86, ARM, and RISC-V, standardized directive handling, and introduced metadata for improved debugging. Using OCaml and Shell, Alexandre implemented configurable linter warnings and precise dead-variable detection, reducing false positives and improving developer feedback. His work included targeted code refactoring, build system upgrades with Dune, and configuration hygiene, all aimed at increasing maintainability and reliability. The depth of his contributions addressed both immediate bugs and long-term code quality.
Overall Statistics
Feature vs Bugs
86%Features
Repository Contributions
20Total
Bugs
2
Commits
20
Features
12
Lines of code
2,905
Activity Months8
Work History
July 2025
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for jasmin-lang/jasmin: Implemented precise all-unused-variable warning in the linter, refactoring dead-variable checks to distinguish all-dead-variable scenarios from general dead-variable assignments. Added tests and changelog update; prepared documentation. This enhances static analysis accuracy, reduces false positives, and accelerates developer feedback.
1 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary for jasmin-lang/jasmin: Implemented precise all-unused-variable warning in the linter, refactoring dead-variable checks to distinguish all-dead-variable scenarios from general dead-variable assignments. Added tests and changelog update; prepared documentation. This enhances static analysis accuracy, reduces false positives, and accelerates developer feedback.
July 2025
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for jasmin-lang/jasmin. Focused on linter improvements to increase accuracy and configurability. Implemented edge-case fixes, added tests, and introduced optional warnings to reduce noise in CI feedback.
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for jasmin-lang/jasmin. Focused on linter improvements to increase accuracy and configurability. Implemented edge-case fixes, added tests, and introduced optional warnings to reduce noise in CI feedback.
May 2025
1 Commits • 1 Features
May 1, 2025Month: 2025-05 — Focused on configuration hygiene in jasmin-lang/jasmin. The main deliverable was a targeted cleanup in the SafetyConfig module that simplifies configuration and reduces future maintenance overhead by removing an unused field. This work improves maintainability, reduces risk of configuration drift, and sets a cleaner baseline for future SafetyConfig enhancements. No major bugs fixed this month; all changes are small, well-tracked refactors with auditable commits.
1 Commits • 1 Features
May 1, 2025Month: 2025-05 — Focused on configuration hygiene in jasmin-lang/jasmin. The main deliverable was a targeted cleanup in the SafetyConfig module that simplifies configuration and reduces future maintenance overhead by removing an unused field. This work improves maintainability, reduces risk of configuration drift, and sets a cleaner baseline for future SafetyConfig enhancements. No major bugs fixed this month; all changes are small, well-tracked refactors with auditable commits.
May 2025
April 2025
9 Commits • 3 Features
Apr 1, 2025During 2025-04, delivered cross-architecture improvements to the Jasmin assembly generation path, introduced a targeted live-variable analysis helper, and modernized the build environment. The changes increase correctness, portability, and maintainability, reduce debugging time, and lay groundwork for multi-arch support across x86, ARM, and RISCV. Key highlights: - Assembly Printing and Directive Standardization in jasmin: improved assembly printing quality, standardized directives across architectures, and implemented an abstract assembly target to unify traversal for printing. This included fixing trailing whitespace printing for no-argument instructions, coherent line endings, and reordering/normalizing .globl/.global directives and export directives across arm and riscv. Commits touched: fbcb688d692ae28a401eab4a9144943ffd4a6ed6; 6c49a3a82c16b68e2a77d25546cc68dc9d766db7; 88c61b9bf2df08401573c38579564e1599f51fd9; 42a6df9b3894c87a302accea1949506394b86009; 59052ad87fbae2bd1dec6b6e18d9fcdbb58fca94; 17b5e36e4eefb5726ed75a354ddc3a48abc8d98d. - Return variable extraction helper (vars_ret) for live variable analysis: introduced vars_ret to extract return variables from a function definition, simplifying live_fd analysis and updating prog modules. Commit: 9155eddd13ecb7f2a2c86d344cc906a51959dd0a. - Build system upgrade and environment simplification: upgraded Dune to 3.7 and pruned unused global tracking in Env (remove glob field), reducing configuration drift and improving build times and reliability. Commits: f2fb550264b30c3feedb789b2d5cfc3753f7775c; 671ff53e709c49a254371030a04a20fd39b20df8. Overall impact and accomplishments: - Business value: More reliable and portable assembly output, faster debugging cycles, and streamlined builds that support ongoing multi-arch workstreams. - Technical achievements: Cross-arch directive standardization, robust assembly printing path, enhanced static analysis support, and a cleaner build configuration that reduces maintenance overhead. Technologies/skills demonstrated: - OCaml-based tooling, assembly generation and formatting logic, static analysis integration, and OCaml build tooling (Dune).
April 2025
9 Commits • 3 Features
Apr 1, 2025During 2025-04, delivered cross-architecture improvements to the Jasmin assembly generation path, introduced a targeted live-variable analysis helper, and modernized the build environment. The changes increase correctness, portability, and maintainability, reduce debugging time, and lay groundwork for multi-arch support across x86, ARM, and RISCV. Key highlights: - Assembly Printing and Directive Standardization in jasmin: improved assembly printing quality, standardized directives across architectures, and implemented an abstract assembly target to unify traversal for printing. This included fixing trailing whitespace printing for no-argument instructions, coherent line endings, and reordering/normalizing .globl/.global directives and export directives across arm and riscv. Commits touched: fbcb688d692ae28a401eab4a9144943ffd4a6ed6; 6c49a3a82c16b68e2a77d25546cc68dc9d766db7; 88c61b9bf2df08401573c38579564e1599f51fd9; 42a6df9b3894c87a302accea1949506394b86009; 59052ad87fbae2bd1dec6b6e18d9fcdbb58fca94; 17b5e36e4eefb5726ed75a354ddc3a48abc8d98d. - Return variable extraction helper (vars_ret) for live variable analysis: introduced vars_ret to extract return variables from a function definition, simplifying live_fd analysis and updating prog modules. Commit: 9155eddd13ecb7f2a2c86d344cc906a51959dd0a. - Build system upgrade and environment simplification: upgraded Dune to 3.7 and pruned unused global tracking in Env (remove glob field), reducing configuration drift and improving build times and reliability. Commits: f2fb550264b30c3feedb789b2d5cfc3753f7775c; 671ff53e709c49a254371030a04a20fd39b20df8. Overall impact and accomplishments: - Business value: More reliable and portable assembly output, faster debugging cycles, and streamlined builds that support ongoing multi-arch workstreams. - Technical achievements: Cross-arch directive standardization, robust assembly printing path, enhanced static analysis support, and a cleaner build configuration that reduces maintenance overhead. Technologies/skills demonstrated: - OCaml-based tooling, assembly generation and formatting logic, static analysis integration, and OCaml build tooling (Dune).
March 2025
2 Commits • 2 Features
Mar 1, 2025March 2025 focused on cross-architecture tooling improvements and code quality in jasmin. Delivered a unified assembly pretty printer across RISC-V and ARM through refactoring and interface standardization, and added pre-typing level checks for deprecated intrinsic operators, with warnings and replacement suggestions. No major bugs fixed this month; the groundwork enables multi-arch capabilities and reduces future maintenance, delivering business value through improved reliability and developer guidance.
2 Commits • 2 Features
Mar 1, 2025March 2025 focused on cross-architecture tooling improvements and code quality in jasmin. Delivered a unified assembly pretty printer across RISC-V and ARM through refactoring and interface standardization, and added pre-typing level checks for deprecated intrinsic operators, with warnings and replacement suggestions. No major bugs fixed this month; the groundwork enables multi-arch capabilities and reduces future maintenance, delivering business value through improved reliability and developer guidance.
March 2025
February 2025
1 Commits
Feb 1, 2025February 2025 monthly summary for jasmin-lang/jasmin. Delivered a compiler-level safety enhancement to prevent duplicate assembly labels for non-inline functions, with accompanying tests and targeted validation to reduce runtime label conflicts. This work strengthens codegen correctness, improves reliability of generated binaries, and reduces risk in downstream tooling and debugging.
February 2025
1 Commits
Feb 1, 2025February 2025 monthly summary for jasmin-lang/jasmin. Delivered a compiler-level safety enhancement to prevent duplicate assembly labels for non-inline functions, with accompanying tests and targeted validation to reduce runtime label conflicts. This work strengthens codegen correctness, improves reliability of generated binaries, and reduces risk in downstream tooling and debugging.
January 2025
3 Commits • 3 Features
Jan 1, 2025January 2025 performance snapshot for jasmin-lang/jasmin: Delivered key enhancements to debugging and internal data handling, and improved repository hygiene to reduce noise and risk in version control. The work supports faster debugging, more robust compilation behavior, and cleaner project hygiene, enabling smoother onboarding and fewer incidental commits.
3 Commits • 3 Features
Jan 1, 2025January 2025 performance snapshot for jasmin-lang/jasmin: Delivered key enhancements to debugging and internal data handling, and improved repository hygiene to reduce noise and risk in version control. The work supports faster debugging, more robust compilation behavior, and cleaner project hygiene, enabling smoother onboarding and fewer incidental commits.
January 2025
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for jasmin: Delivered enhanced debugging context for the While instruction in the jasmin compiler, enriching the internal representation with location metadata for both the entire while instruction and its guard condition. This improvement enhances debugging visibility, accelerates issue reproduction, and reduces time to fix loop-related bugs. No major bugs were reported in this period.
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for jasmin: Delivered enhanced debugging context for the While instruction in the jasmin compiler, enriching the internal representation with location metadata for both the entire while instruction and its guard condition. This improvement enhances debugging visibility, accelerates issue reproduction, and reduces time to fix loop-related bugs. No major bugs were reported in this period.
Activity
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Quality Metrics
Correctness91.0%
Maintainability89.0%
Architecture87.6%
Performance85.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
DuneJazzMLOCamlShell
Technical Skills
Assembly GenerationAssembly LanguageBug FixingBuild System ConfigurationCode AnalysisCode GenerationCode RefactoringCompiler DesignCompiler DevelopmentConfiguration ManagementDebugging ToolsDeprecation HandlingFormal VerificationFunctional ProgrammingGit
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