Xilinx/llvm-aie
Dec 2024 – Jan 2025
2 Months active
Languages Used
C++LLVM IR
Technical Skills
Code RefactoringCompiler DevelopmentDebuggingLLVMLLVM Pass DevelopmentRISC-V
LiqinWeng
PROFILE
Liqinweng
Worked on LLVM-based performance optimizations and vectorization enhancements across Xilinx/llvm-project and Xilinx/llvm-aie, focusing on RISC-V architecture. Delivered features such as shift folding in DAGCombine, cast intrinsic support in the LLVM loop vectorizer, and expanded cost modeling for bf16/f16 operations. Improved test reliability by refining VPlan debug logging and removing redundant prints, contributing to more stable CI workflows. Refactored vectorization infrastructure to propagate fast-math flags and streamline step-vector creation using C++ and LLVM IR. Additionally, enhanced code readability in llvm/clangir by standardizing debug output formatting, supporting maintainability and developer experience without introducing functional changes.
Overall Statistics
Feature vs Bugs
78%Features
Repository Contributions
13Total
Bugs
2
Commits
13
Features
7
Lines of code
4,046
Activity Months3
Your Network
1150 peopleSame Organization
@spacemit.com7
Work History
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary focused on code readability improvements and maintainability in the llvm/clangir project. The work centers on non-functional refactoring of debug logging to align with project style and improve developer experience.
1 Commits • 1 Features
Jun 1, 2025June 2025 monthly summary focused on code readability improvements and maintainability in the llvm/clangir project. The work centers on non-functional refactoring of debug logging to align with project style and improve developer experience.
June 2025
January 2025
4 Commits • 3 Features
Jan 1, 2025Monthly performance summary for 2025-01 focused on delivering significant vectorization and cost-model enhancements in Xilinx/llvm-aie, with measurable impact on cost estimation accuracy and vector optimization capabilities. Highlights include RISC-V bf16/f16 cost model improvements, VP vectorization infra improvements for fast-math flag propagation and step-vector creation, and expanded VP intrinsics lowering to more integer operations.
January 2025
4 Commits • 3 Features
Jan 1, 2025Monthly performance summary for 2025-01 focused on delivering significant vectorization and cost-model enhancements in Xilinx/llvm-aie, with measurable impact on cost estimation accuracy and vector optimization capabilities. Highlights include RISC-V bf16/f16 cost model improvements, VP vectorization infra improvements for fast-math flag propagation and step-vector creation, and expanded VP intrinsics lowering to more integer operations.
December 2024
8 Commits • 3 Features
Dec 1, 2024Month: 2024-12 – Delivery focused on LLVM-based performance optimizations, EVL-vectorization enhancements, and test reliability improvements across Xilinx/llvm-project and Xilinx/llvm-aie. These changes deliver tangible business value by unlocking more folding opportunities on RISC-V, enabling cast-based vectorization with EVL, and strengthening testing stability for VPlan/EVL workflows.
8 Commits • 3 Features
Dec 1, 2024Month: 2024-12 – Delivery focused on LLVM-based performance optimizations, EVL-vectorization enhancements, and test reliability improvements across Xilinx/llvm-project and Xilinx/llvm-aie. These changes deliver tangible business value by unlocking more folding opportunities on RISC-V, enabling cast-based vectorization with EVL, and strengthening testing stability for VPlan/EVL workflows.
December 2024
Activity
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Quality Metrics
Correctness97.0%
Maintainability93.8%
Architecture93.8%
Performance94.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++LLVM IR
Technical Skills
C++ DevelopmentCode GenerationCode RefactoringCompiler DevelopmentCompiler OptimizationCost ModelingDebuggingFloating-Point ArithmeticIntrinsic FunctionsLLVMLLVM IRLLVM Pass DevelopmentLow-Level OptimizationRISC-VRISC-V 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 DevelopmentCompiler OptimizationLLVMRISC-VRISC-V Architecture
llvm/clangir
Jun 2025 – Jun 2025
1 Month active
Languages Used
C++
Technical Skills
Code RefactoringCompiler DevelopmentDebugging