espressif/llvm-project
Dec 2024 – Jan 2025
2 Months active
Languages Used
C++LLVM IR
Technical Skills
Build SystemsC++Compiler ToolingCompiler DevelopmentFloating-Point ArithmeticLLVM
YunQiang Su
PROFILE
Yunqiang Su
Yunqiang contributed to the espressif/llvm-project and rust-lang/gcc repositories, focusing on compiler development and test suite reliability. He enhanced the LLVM X86 backend by implementing floating-point canonicalization support for f64 and f80 types, improving correctness for floating-point operations using C++ and X86 assembly. Yunqiang also stabilized build systems by reverting unintended MIPS support in llvm-lib, maintaining project scope and CI compatibility. In rust-lang/gcc, he added targeted MIPS test coverage to validate patchable-function-entry handling, using MIPS assembly and test suite development skills. His work demonstrated careful attention to platform-specific correctness and robust integration with existing toolchains.
Overall Statistics
Feature vs Bugs
67%Features
Repository Contributions
3Total
Bugs
1
Commits
3
Features
2
Lines of code
395
Activity Months3
Your Network
408 peopleSame Organization
@isrc.iscas.ac.cn7
Work History
September 2025
1 Commits • 1 Features
Sep 1, 2025Month: 2025-09. Focused on validating MIPS patchable-function-entry support in the rust-lang/gcc repository by adding dedicated test coverage. This work ensures correct placement of the .LPFE0 label and insertion of a 'nop' at the function entry when using -fpatchable-function-entry=2,1, verifying compiler handling of this optimization flag for MIPS architecture. Commit linked to the change: 0a32656dc3efd67aa1ec8b6543867fc8262c2da6.
1 Commits • 1 Features
Sep 1, 2025Month: 2025-09. Focused on validating MIPS patchable-function-entry support in the rust-lang/gcc repository by adding dedicated test coverage. This work ensures correct placement of the .LPFE0 label and insertion of a 'nop' at the function entry when using -fpatchable-function-entry=2,1, verifying compiler handling of this optimization flag for MIPS architecture. Commit linked to the change: 0a32656dc3efd67aa1ec8b6543867fc8262c2da6.
September 2025
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025: Delivered X86 floating-point canonicalization support (FCANONICALIZE) for f64 on SSE2 and f80 on 32-bit (i686) in the LLVM X86 backend. Updated X86TargetLowering to correctly lower FCANONICALIZE operations, improving the correctness and compatibility of floating-point computations across platforms. This work reduces FP semantics gaps for FP-heavy workloads and enables more reliable optimizations in downstream toolchains.
January 2025
1 Commits • 1 Features
Jan 1, 2025January 2025: Delivered X86 floating-point canonicalization support (FCANONICALIZE) for f64 on SSE2 and f80 on 32-bit (i686) in the LLVM X86 backend. Updated X86TargetLowering to correctly lower FCANONICALIZE operations, improving the correctness and compatibility of floating-point computations across platforms. This work reduces FP semantics gaps for FP-heavy workloads and enables more reliable optimizations in downstream toolchains.
December 2024
1 Commits
Dec 1, 2024Month: 2024-12 — Focused on stabilizing tool behavior by reverting unintended MIPS architecture support in the llvm-lib tool within espressif/llvm-project. The rollback removes the MIPS machine type from WindowsMachineFlag.cpp and related tests, consolidating the codebase around supported architectures and reducing Windows build complexity. This work preserves project timelines and maintains compatibility with existing CI pipelines.
1 Commits
Dec 1, 2024Month: 2024-12 — Focused on stabilizing tool behavior by reverting unintended MIPS architecture support in the llvm-lib tool within espressif/llvm-project. The rollback removes the MIPS machine type from WindowsMachineFlag.cpp and related tests, consolidating the codebase around supported architectures and reducing Windows build complexity. This work preserves project timelines and maintains compatibility with existing CI pipelines.
December 2024
Activity
Loading activity data...
Quality Metrics
Correctness93.4%
Maintainability93.4%
Architecture93.4%
Performance93.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
CC++LLVM IR
Technical Skills
Build SystemsC++Compiler DevelopmentCompiler ToolingFloating-Point ArithmeticLLVMMIPS AssemblyTest Suite DevelopmentX86 Assembly
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
rust-lang/gcc
Sep 2025 – Sep 2025
1 Month active
Languages Used
C
Technical Skills
Compiler DevelopmentMIPS AssemblyTest Suite Development