espressif/llvm-project
Dec 2024 – Jan 2025
2 Months active
Languages Used
C++Assembly
Technical Skills
Binary OptimizationCommand-Line Interface DesignCompiler DevelopmentBinary RewritingLow-Level OptimizationTesting
Peter Waller
PROFILE
Peter Waller
Peter Waller developed and refined function-padding controls for the BOLT binary optimizer within the espressif/llvm-project repository, focusing on embedded build reliability. He introduced a new command-line option in C++ to allow precise byte padding before function bodies, ensuring correct behavior in relocation mode and robust error handling for misaligned requests. Peter also addressed a bug affecting the independence of before-and-after function padding, reworking the implementation to enforce clear separation and prevent regressions. His work involved low-level optimization, binary rewriting, and comprehensive testing in both Assembly and C++, resulting in more predictable code layout and improved binary reliability for embedded systems.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
213
Activity Months2
Your Network
601 people
Work History
January 2025
1 Commits
Jan 1, 2025January 2025 monthly summary for espressif/llvm-project focusing on BOLT padding options independence bug fix. Key actions included reintroducing --pad-funcs-before to ensure independent padding for before and after function padding, plus tests to verify correct behavior; resulting in more reliable code layout optimizations and reduced regression risk.
1 Commits
Jan 1, 2025January 2025 monthly summary for espressif/llvm-project focusing on BOLT padding options independence bug fix. Key actions included reintroducing --pad-funcs-before to ensure independent padding for before and after function padding, plus tests to verify correct behavior; resulting in more reliable code layout optimizations and reduced regression risk.
January 2025
December 2024
1 Commits • 1 Features
Dec 1, 2024Month 2024-12 — Delivered a new function-padding control for BOLT within espressif/llvm-project to enhance layout predictability and reliability in embedded builds. Implemented a dedicated CLI option to pad bytes before function bodies, with correct application in relocation mode and robust error handling for invalid padding requests that violate alignment. Added comprehensive tests to validate padding behavior and error scenarios.
December 2024
1 Commits • 1 Features
Dec 1, 2024Month 2024-12 — Delivered a new function-padding control for BOLT within espressif/llvm-project to enhance layout predictability and reliability in embedded builds. Implemented a dedicated CLI option to pad bytes before function bodies, with correct application in relocation mode and robust error handling for invalid padding requests that violate alignment. Added comprehensive tests to validate padding behavior and error scenarios.
Activity
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Quality Metrics
Correctness95.0%
Maintainability80.0%
Architecture80.0%
Performance65.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyC++
Technical Skills
Binary OptimizationBinary RewritingCommand-Line Interface DesignCompiler DevelopmentLow-Level OptimizationTesting
Repositories Contributed To
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