rust-lang/gcc
Mar 2025 – Sep 2025
5 Months active
Languages Used
CC++
Technical Skills
ARM ArchitectureCompiler DevelopmentFeature Flag ManagementTestingCode AnalysisOptimization
Andre Vieira
PROFILE
Andre Vieira
Andre Simoes Dias Vieira contributed to compiler and toolchain development across espressif/binutils-gdb, zephyrproject-rtos/gcc, and rust-lang/gcc, focusing on ARM architecture support and reliability. He enhanced ARM disassembly accuracy, introduced pointer authentication operand support, and aligned test suites to reflect supported environments. In rust-lang/gcc, Andre decoupled SME and SVE2 features, improved modulo scheduler correctness, and refactored vectorization reduction logic for maintainability. He addressed ARM intrinsic operand bounds, improved BitInt reliability, and enabled ARM HF cross-target builds. His work, primarily in C, C++, and Assembly, demonstrated deep understanding of low-level programming, code analysis, and robust testing practices across embedded systems.
Overall Statistics
Feature vs Bugs
56%Features
Repository Contributions
11Total
Bugs
4
Commits
11
Features
5
Lines of code
1,514
Activity Months7
Your Network
837 people
Work History
September 2025
2 Commits • 1 Features
Sep 1, 20252025-09 monthly summary: Focused on BitInt reliability and ARM HF build support in rust-lang/gcc. Delivered core correctness improvements and cross-target build option, enabling more robust ARM deployments and broader platform coverage. These changes reduce cross-arch build risk, improve performance consistency, and support smoother shipping of ARM HF configurations.
2 Commits • 1 Features
Sep 1, 20252025-09 monthly summary: Focused on BitInt reliability and ARM HF build support in rust-lang/gcc. Delivered core correctness improvements and cross-target build option, enabling more robust ARM deployments and broader platform coverage. These changes reduce cross-arch build risk, improve performance consistency, and support smoother shipping of ARM HF configurations.
September 2025
August 2025
1 Commits
Aug 1, 2025Monthly summary for 2025-08: Delivered a precise fix to ARM intrinsic operand bound checking and added regression tests in rust-lang/gcc. This work improves correctness for ARM intrinsics (__arm_mcrr, __arm_mcrr2, __arm_mrrc, __arm_mrrc2) by raising the operand bound from 8 to 16 and adding tests to prevent regressions. The change was implemented via commit b29abdc333cce9acbc9537a1df8a4ec09444658f, addressing PR 121464.
August 2025
1 Commits
Aug 1, 2025Monthly summary for 2025-08: Delivered a precise fix to ARM intrinsic operand bound checking and added regression tests in rust-lang/gcc. This work improves correctness for ARM intrinsics (__arm_mcrr, __arm_mcrr2, __arm_mrrc, __arm_mrrc2) by raising the operand bound from 8 to 16 and adding tests to prevent regressions. The change was implemented via commit b29abdc333cce9acbc9537a1df8a4ec09444658f, addressing PR 121464.
May 2025
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for rust-lang/gcc focused on vectorization of reductions. Delivered a refactor and optimization of the Vectorization Reduction Path, removing the non-SLP path, consolidating logic, and clarifying function boundaries to improve maintainability. Improvements target loop-closed (LC) PHI nodes and streamline the vectorization process for reduction operations, enabling better performance and easier future enhancements.
1 Commits • 1 Features
May 1, 2025May 2025 monthly summary for rust-lang/gcc focused on vectorization of reductions. Delivered a refactor and optimization of the Vectorization Reduction Path, removing the non-SLP path, consolidating logic, and clarifying function boundaries to improve maintainability. Improvements target loop-closed (LC) PHI nodes and streamline the vectorization process for reduction operations, enabling better performance and easier future enhancements.
May 2025
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for rust-lang/gcc focusing on correctness and reliability in the modulo scheduler. Delivered a targeted bug fix to enforce single-step decrement in loop conditions, preventing scheduling with non-unit decrements and improving codegen stability for loop-heavy code paths. Implemented regression tests to validate modulo-scheduler behavior across loop structures, and linked the work to PR 116479.
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for rust-lang/gcc focusing on correctness and reliability in the modulo scheduler. Delivered a targeted bug fix to enforce single-step decrement in loop conditions, preventing scheduling with non-unit decrements and improving codegen stability for loop-heavy code paths. Implemented regression tests to validate modulo-scheduler behavior across loop structures, and linked the work to PR 116479.
March 2025
1 Commits • 1 Features
Mar 1, 2025Concise monthly summary for 2025-03 focusing on key accomplishments, business value, and technical achievements in the rust-lang/gcc repository. Highlights include decoupling SME feature from SVE2 on AArch64, test alignment, and enhanced diagnostic clarity.
1 Commits • 1 Features
Mar 1, 2025Concise monthly summary for 2025-03 focusing on key accomplishments, business value, and technical achievements in the rust-lang/gcc repository. Highlights include decoupling SME feature from SVE2 on AArch64, test alignment, and enhanced diagnostic clarity.
March 2025
December 2024
1 Commits
Dec 1, 2024December 2024 monthly summary for the Zephyr GCC integration.
December 2024
1 Commits
Dec 1, 2024December 2024 monthly summary for the Zephyr GCC integration.
November 2024
4 Commits • 2 Features
Nov 1, 2024January through November 2024 (month 2024-11) monthly results focused on expanding ARM support in espressif/binutils-gdb, with targeted disassembly improvements, PAC-related operand support, and test suite alignment to reflect supported environments. Key outcomes drive reliability, faster debugging, and broader architecture coverage for ARM toolchain users.
4 Commits • 2 Features
Nov 1, 2024January through November 2024 (month 2024-11) monthly results focused on expanding ARM support in espressif/binutils-gdb, with targeted disassembly improvements, PAC-related operand support, and test suite alignment to reflect supported environments. Key outcomes drive reliability, faster debugging, and broader architecture coverage for ARM toolchain users.
November 2024
Activity
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Quality Metrics
Correctness91.0%
Maintainability91.0%
Architecture90.0%
Performance81.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyCC++
Technical Skills
ARM ArchitectureARM AssemblyAssembly LanguageCode AnalysisCode RefactoringCompiler DevelopmentCompiler ToolchainDisassemblerEmbedded SystemsFeature Flag ManagementLoop OptimizationLow-Level ProgrammingOptimizationTestingVectorization
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
espressif/binutils-gdb
Nov 2024 – Nov 2024
1 Month active
Languages Used
AssemblyC
Technical Skills
ARM ArchitectureARM AssemblyAssembly LanguageCompiler DevelopmentCompiler ToolchainDisassembler
zephyrproject-rtos/gcc
Dec 2024 – Dec 2024
1 Month active
Languages Used
C
Technical Skills
Compiler DevelopmentEmbedded Systems