openjdk/leyden
Dec 2025 – Jan 2026
2 Months active
Languages Used
MakefileJava
Technical Skills
C/C++ developmentbuild system configurationBuild SystemsJava
Wang Haomin
PROFILE
Wang Haomin
Worked on core runtime and build reliability across JetBrainsRuntime and openjdk/leyden repositories, focusing on stability and maintainability in C++ and Java environments. Addressed a critical C2 JIT compiler issue in JetBrainsRuntime by refining SuperWord truncation logic for IsFiniteF and IsFiniteD nodes, which improved finite-check processing and reduced runtime risk in optimized code paths. In openjdk/leyden, resolved a PNG library undefined reference to ensure reliable splash screen rendering and expanded the CheckFiles allowlist to support JavaFX builds. Leveraged skills in compiler optimization, low-level programming, and build system configuration to deliver targeted fixes and enhance continuous integration workflows.
Overall Statistics
Feature vs Bugs
33%Features
Repository Contributions
3Total
Bugs
2
Commits
3
Features
1
Lines of code
4
Activity Months3
Your Network
720 peopleSame Organization
@openjdk.org335
Anton ArtemovMember
Alexey BakhtinMember
Artur BarashevMember
Anass BayaMember
Abhishek KumarMember
Aggelos BiboudisMember
Axel Boldt-ChristmasMember
Alisen ChungMember
Archie CobbsMember
Shared Repositories
385
Robert ToyonagaMember
Coleen PhillimoreMember
Dusan BalekMember
Matthias BaeskenMember
Justin LuMember
Amit KumarMember
Guanqiang HanMember
Dingli ZhangMember
Evgeny AstigeevichMember
Work History
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026: Focused on strengthening JavaFX build reliability in Leyden by expanding the CheckFiles allowlist to include JavaFX-related files, reducing false negatives and enabling smoother CI for JavaFX applications.
1 Commits • 1 Features
Jan 1, 2026January 2026: Focused on strengthening JavaFX build reliability in Leyden by expanding the CheckFiles allowlist to include JavaFX-related files, reducing false negatives and enabling smoother CI for JavaFX applications.
January 2026
December 2025
1 Commits
Dec 1, 2025December 2025: Fixed a critical undefined reference in the splash screen PNG library, ensuring proper compilation and runtime behavior for Leyden's Java desktop environment. The fix targets the PNG LSX optimization path to prevent build failures and maintain reliable splash rendering.
December 2025
1 Commits
Dec 1, 2025December 2025: Fixed a critical undefined reference in the splash screen PNG library, ensuring proper compilation and runtime behavior for Leyden's Java desktop environment. The fix targets the PNG LSX optimization path to prevent build failures and maintain reliable splash rendering.
July 2025
1 Commits
Jul 1, 2025July 2025 — Focused on reliability, correctness, and maintainability in JetBrainsRuntime. Implemented a critical C2 JIT fix that stabilizes SuperWord truncation for IsFiniteF/IsFiniteD, preventing unexpected nodes and ensuring proper finite-check processing. No new user-facing features this month; the value came from strengthening core JIT paths, improving stability, and reducing risk in optimized code paths across downstream applications.
1 Commits
Jul 1, 2025July 2025 — Focused on reliability, correctness, and maintainability in JetBrainsRuntime. Implemented a critical C2 JIT fix that stabilizes SuperWord truncation for IsFiniteF/IsFiniteD, preventing unexpected nodes and ensuring proper finite-check processing. No new user-facing features this month; the value came from strengthening core JIT paths, improving stability, and reducing risk in optimized code paths across downstream applications.
July 2025
Activity
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Quality Metrics
Correctness93.4%
Maintainability93.4%
Architecture93.4%
Performance86.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++JavaMakefile
Technical Skills
Build SystemsC/C++ developmentCompiler OptimizationJavaLow-Level Programmingbuild system configuration
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline
JetBrains/JetBrainsRuntime
Jul 2025 – Jul 2025
1 Month active
Languages Used
C++
Technical Skills
Compiler OptimizationLow-Level Programming