intel/llvm
Aug 2025 – Sep 2025
2 Months active
Languages Used
C++LLVM IRC
Technical Skills
Compiler DevelopmentInstruction Set Architecture (ISA)Low-Level OptimizationPowerPC ArchitectureArchitecture SupportEmbedded Systems
Maryam Moghadas
PROFILE
Maryam Moghadas
Mary Ammo developed and optimized PowerPC backend features across several LLVM repositories, focusing on low-level code generation and architecture support. She introduced custom lowering for signed 64-bit arithmetic in Xilinx/llvm-project, improving instruction efficiency and test coverage using C++ and LLVM IR. In llvm/clangir and intel/llvm, she added Dense Math Facility types and built-ins, enabling advanced integer and cryptographic operations for PowerPC, and implemented efficient register copy support for specialized hardware. Her work also extended patchable-function-entry support for PPC64LE Linux in intel/llvm, demonstrating depth in compiler development, instruction set architecture, and embedded systems programming for performance-critical workloads.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
5Total
Bugs
0
Commits
5
Features
5
Lines of code
1,564
Activity Months4
Your Network
1456 people
Work History
September 2025
2 Commits • 2 Features
Sep 1, 20252025-09 monthly summary focusing on targeted LLVM/Clang enhancements for PowerPC on Linux, delivering patchable-function-entry support for PPC64LE and DMF crypto builtins for PowerPC. These improvements expand platform coverage, improve cryptographic instruction support, and position the project for security-sensitive workloads.
2 Commits • 2 Features
Sep 1, 20252025-09 monthly summary focusing on targeted LLVM/Clang enhancements for PowerPC on Linux, delivering patchable-function-entry support for PPC64LE and DMF crypto builtins for PowerPC. These improvements expand platform coverage, improve cryptographic instruction support, and position the project for security-sensitive workloads.
September 2025
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025 monthly summary for intel/llvm. Focused on extending the PowerPC backend: delivered DMR and WACC copy operations support, updated instruction metadata for new register classes, and refined the VSX copy pass to handle WACC patterns, enabling more efficient code generation for specialized registers. No major bugs fixed this month. Impact: improved performance on PowerPC targets and alignment with architecture-specific optimizations. Technologies demonstrated: C++, LLVM backend development, PowerPC ISA, VSX, register class handling.
August 2025
1 Commits • 1 Features
Aug 1, 2025August 2025 monthly summary for intel/llvm. Focused on extending the PowerPC backend: delivered DMR and WACC copy operations support, updated instruction metadata for new register classes, and refined the VSX copy pass to handle WACC patterns, enabling more efficient code generation for specialized registers. No major bugs fixed this month. Impact: improved performance on PowerPC targets and alignment with architecture-specific optimizations. Technologies demonstrated: C++, LLVM backend development, PowerPC ISA, VSX, register class handling.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for llvm/clangir: Delivered Dense Math Facility (DMF) support for PowerPC by introducing the __dmr1024 type and DMF built-ins for integer outer-product accumulate. Implemented tests and validated Clang integration on PowerPC. No major bugs fixed this month. This work provides a foundation for DMF-enabled PPC math workloads and sets the stage for future performance optimizations.
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary for llvm/clangir: Delivered Dense Math Facility (DMF) support for PowerPC by introducing the __dmr1024 type and DMF built-ins for integer outer-product accumulate. Implemented tests and validated Clang integration on PowerPC. No major bugs fixed this month. This work provides a foundation for DMF-enabled PPC math workloads and sets the stage for future performance optimizations.
June 2025
December 2024
1 Commits • 1 Features
Dec 1, 2024Monthly summary for 2024-12: Delivered a targeted LLVM backend optimization for PowerPC 64-bit codegen by introducing a custom lowering for ssubo (signed subtract with overflow) on i64. Refactored the lowering to use a more efficient instruction sequence and updated tests to cover the new path (PPCISelLowering.cpp and saddo-ssubo.ll). The change reduces instruction count and improves codegen quality for PowerPC i64 arithmetic, enabling more predictable performance and reliability in PPC-compiled binaries. This work is recorded under commit 68e75eebec4cf5fc7eef7d9525b276c4ff5e1b17. Major bug fixes: none reported this month. Overall impact: stronger backend efficiency, maintainability, and confidence in i64 codegen on PowerPC. Technologies/skills demonstrated: LLVM backend development, PPC architecture, compiler optimization, C++ code changes, and test-driven validation.
December 2024
1 Commits • 1 Features
Dec 1, 2024Monthly summary for 2024-12: Delivered a targeted LLVM backend optimization for PowerPC 64-bit codegen by introducing a custom lowering for ssubo (signed subtract with overflow) on i64. Refactored the lowering to use a more efficient instruction sequence and updated tests to cover the new path (PPCISelLowering.cpp and saddo-ssubo.ll). The change reduces instruction count and improves codegen quality for PowerPC i64 arithmetic, enabling more predictable performance and reliability in PPC-compiled binaries. This work is recorded under commit 68e75eebec4cf5fc7eef7d9525b276c4ff5e1b17. Major bug fixes: none reported this month. Overall impact: stronger backend efficiency, maintainability, and confidence in i64 codegen on PowerPC. Technologies/skills demonstrated: LLVM backend development, PPC architecture, compiler optimization, C++ code changes, and test-driven validation.
Activity
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Quality Metrics
Correctness100.0%
Maintainability92.0%
Architecture92.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
CC++LLVM IR
Technical Skills
Architecture SupportCode GenerationCompiler DevelopmentCryptographyEmbedded SystemsInstruction SelectionInstruction Set Architecture (ISA)Low-Level OptimizationLow-Level ProgrammingLow-Level Systems ProgrammingPowerPC Architecture
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
Xilinx/llvm-project
Dec 2024 – Dec 2024
1 Month active
Languages Used
C++LLVM IR
Technical Skills
Code GenerationCompiler DevelopmentInstruction SelectionLow-Level Optimization
llvm/clangir
Jun 2025 – Jun 2025
1 Month active
Languages Used
CC++
Technical Skills
Compiler DevelopmentEmbedded SystemsLow-Level ProgrammingPowerPC Architecture
swiftlang/llvm-project
Sep 2025 – Sep 2025
1 Month active
Languages Used
CC++
Technical Skills
Compiler DevelopmentCryptographyEmbedded SystemsPowerPC Architecture