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José Bacelar Almeida

PROFILE

José Bacelar Almeida

During a two-month period, Bacelar contributed to the jasmin-lang/jasmin repository by addressing correctness and precision in low-level programming and formal verification. In January, Bacelar fixed a critical edge case in AVX2 bitwise shift semantics, ensuring Jasmin’s vectorized operations conformed to the AVX2 specification and reducing subtle cross-platform bugs. The work involved careful use of ECMAScript and bitwise operations to deliver a maintainable, auditable code change. In February, Bacelar enhanced the theorem prover’s precision by introducing a [rigid] attribute for modulus hints in JWord.ec, strengthening the core hints mechanism and laying groundwork for future improvements in modulus reasoning.

Overall Statistics

Feature vs Bugs

50%Features

Repository Contributions

2Total
Bugs
1
Commits
2
Features
1
Lines of code
12
Activity Months2

Work History

February 2025

1 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary for jasmin-lang/jasmin focusing on business value and technical achievements. Delivered targeted enhancement to modulus hinting to improve precision in the theorem prover, and set the stage for broader modulus reasoning improvements.

January 2025

1 Commits

Jan 1, 2025

January 2025 monthly summary for jasmin-lang/jasmin. Focused on improving correctness in low-level vector operations by fixing AVX2 shift semantics, ensuring Jasmin's bitwise shifts adhere to the AVX2 specification. This reduces subtle vectorization bugs and increases reliability across platforms.

Activity

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Quality Metrics

Correctness85.0%
Maintainability90.0%
Architecture80.0%
Performance70.0%
AI Usage20.0%

Skills & Technologies

Programming Languages

ECMAScriptEc

Technical Skills

Bitwise operationsCompiler developmentFormal VerificationLow-level programmingTheorem Proving

Repositories Contributed To

1 repo

Overview of all repositories you've contributed to across your timeline

jasmin-lang/jasmin

Jan 2025 Feb 2025
2 Months active

Languages Used

ECMAScriptEc

Technical Skills

Bitwise operationsCompiler developmentLow-level programmingFormal VerificationTheorem Proving