**Cong's Publications** Under Review =================================================================== 2025 ------------------------------------------------------------------- + *Retrieving Snippets to Aid Repository-Level RAG*
*Cong Li*, and other collaborators
 [Under Review](#) ·  [CCF-A](https://www.ccf.org.cn/Academic_Evaluation/By_category) ·  [Core-A*](http://portal.core.edu.au/conf-ranks) + *Understanding and Detecting Accessibility Issues for Ageing Users*
Anonymous, *Cong Li*, and other collaborators
 [Under Review](#) ·  [CCF-A](https://www.ccf.org.cn/Academic_Evaluation/By_category) ·  [Core-A*](http://portal.core.edu.au/conf-ranks) Conferences & Symposiums =================================================================== 2024 ------------------------------------------------------------------- + *Understanding Code Changes Practically with Small-Scale Language Models*
*Cong Li*, Zhaogui Xu, Peng Di, Dongxia Wang, Zheng Li, and Qian Zheng
In: Proceedings of the 2024 IEEE/ACM International Conference on Automated Software Engineering (ASE '24)
 [ASE '24](https://conf.researchr.org/home/ase-2024) ·  [CCF-A](https://www.ccf.org.cn/Academic_Evaluation/By_category) ·  [Core-A*](http://portal.core.edu.au/conf-ranks) ·  [PDF](pdfs/hqcm_ase24.pdf) ·  [Tool: HQCM](https://github.com/codefuse-ai/codefuse-hqcm)

Contributed around ~17B tokens to training Ant Ling-Coder-Lite + *The Mutators Reloaded: Fuzzing Compilers with Large Language Model Generated Mutation Operators*
Xianfei Ou, *Cong Li*, Yanyan Jiang, and Chang Xu
In: Proceedings of the 2024 ACM International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS '24; to appear)
 [ASPLOS '24](https://www.asplos-conference.org/asplos2024/) ·  [CCF-A](https://www.ccf.org.cn/Academic_Evaluation/By_category) ·  [Core-A*](http://portal.core.edu.au/conf-ranks) ·  [Preprint](pdfs/metamut_asplos24.pdf) ·  [Tool: MetaMut](https://github.com/icsnju/MetaMut)

Found 130+ Bugs in GCC and LLVM 2023 ------------------------------------------------------------------- + *Validating JIT Compilers via Compilation Space Exploration*
*Cong Li*, Yanyan Jiang, Chang Xu, and Zhendong Su
In: Proceedings of the 2023 ACM Symposium on Operating Systems Principles (SOSP '23)
 [SOSP '23](https://sosp2023.mpi-sws.org) ·  [CCF-A](https://www.ccf.org.cn/Academic_Evaluation/By_category) ·  [Core-A*](http://portal.core.edu.au/conf-ranks) ·  [PDF](pdfs/artemis_sosp23.pdf) ·  [Supplementary Material](pdfs/artemis_sosp23_supplementary_meterial.pdf) ·  [Slides](pdfs/artemis_sosp23_slides.pdf) ·  [Tool: Artemis](https://github.com/test-jitcomp/Artemis) ·  [Video](https://www.youtube.com/watch?v=eCuDIGktWBU)

Best Paper Award
Invited to ACM Transactions on Computer Systems
Found 80+ JIT Compiler Bugs in HotSpot, OpenJ9, Android Runtime, and Graal 2022 ------------------------------------------------------------------- + *Cross-Device Record and Replay for Android Apps*
*Cong Li*, Yanyan Jiang, and Chang Xu
In: Proceedings of the 2022 ACM Joint European Software Engineering Conference and Symposium on the Foundations of Software Engineering (ESEC/FSE '22)
 [ESEC/FSE '22](https://2022.esec-fse.org) ·  [CCF-A](https://www.ccf.org.cn/Academic_Evaluation/By_category) ·  [Core-A*](http://portal.core.edu.au/conf-ranks) ·  [PDF](pdfs/rx_esecfse22.pdf) ·  [Tool: Rx](https://github.com/connglli/directorx) ·  [Video](https://youtu.be/xmR-0mwxeKE) + *Push-Button Synthesis of Watch Companions for Android Apps*
*Cong Li*, Yanyan Jiang, and Chang Xu
In: Proceedings of the 2022 Internaltional Conference on Software Engineering (ICSE '22)
 [ICSE '22](https://conf.researchr.org/home/icse-2022) ·  [CCF-A](https://www.ccf.org.cn/Academic_Evaluation/By_category) ·  [Core-A*](http://portal.core.edu.au/conf-ranks) ·  [PDF](pdfs/jigsaw_icse22.pdf) ·  [Artifact: Jigsaw](https://zenodo.org/record/5850491) ·  [Video](https://youtu.be/-7YZ3nfk3XY) 2018 ------------------------------------------------------------------- + *ELEGANT: Towards Effective Location of Fragmentation-Induced Compatibility Issues for Android Apps*
*Cong Li*, Chang Xu, Lili Wei, Jue Wang, Jun Ma, and Jian Lv
In: Proceedings of the 2018 Asia-Pacific Software Engineering Conference (APSEC '18)
 [APSEC '18](https://www.sigse.jp/apsec) ·  [CCF-C](https://www.ccf.org.cn/Academic_Evaluation/By_category) ·  [Core-B](http://portal.core.edu.au/conf-ranks) ·  [PDF](pdfs/elegant_apsec18.pdf) ·  [Tool: ELEGANT](https://github.com/connglli/ELEGANT) Transactions & Journals =================================================================== 2025 ------------------------------------------------------------------- + *Validating JIT Compilers via Compilation Space Exploration* (Extension)
*Cong Li*, Yanyan Jiang, Chang Xu, and Zhendong Su
In: ACM Transactions on Computer Systems (TOCS '25; to appear)
 [TOCS '25](https://dl.acm.org/journal/tocs) ·  [CCF-A](https://www.ccf.org.cn/Academic_Evaluation/By_category) ·  [Preprint](pdfs/csx_tocs25.pdf) ·  [Tool: Artemis](https://github.com/test-jitcomp/Artemis) ·  [Tool: Apollo](https://github.com/test-jitcomp/Apollo)

In this paper, we abbreviated "Compilation Space Exploration" to "CSX", unlike to "CSE" in our SOSP version. 2022 ------------------------------------------------------------------- + *GUI Event-Based Record and Replay Technologies for Android Apps: A Survey*
*Cong Li*, Yanyan Jiang, and Chang Xu
In: Journal of Software (JOS '22), in Chinese
 [JOS '22](http://jos.org.cn) ·  [Chinese CCF-A](https://www.ccf.org.cn/ccftjgjxskwml) ·  [PDF](pdfs/rnrsurvey_jos22.pdf) Technical Reports =================================================================== 2025 ------------------------------------------------------------------- + *Every Sample Matters: Leveraging Mixture-of-Experts and High-Quality Data for Efficient and Accurate Code LLM*
CodeFuse & Ling Team, Ant Group (Alphabetical Order: Wenting Cai, Yuchen Cao, Chaoyu Chen, Chen Chen, Siba Chen, Qing Cui, Peng Di, Junpeng Fang, Zi Gong, Ting Guo, Zhengyu He, Yang Huang, *Cong Li*, Jianguo Li, Zheng Li, Shijie Lian, BingChang Liu, Songshan Luo, Shuo Mao, Min Shen, Jian Wu, Jiaolong Yang, Wenjie Yang, Tong Ye, Hang Yu, Wei Zhang, Zhenduo Zhang, Hailin Zhao, Xunjin Zheng, Jun Zhou)
In: arXiv > Computer Science > Machine Learning (arXiv '25 [cs.LG])
 [arXiv '25](https://arxiv.org) ·  [PDF](https://arxiv.org/abs/2503.17793) ·  [Model: Ling-Coder-Lite](https://huggingface.co/inclusionAI/Ling-Coder-lite) ·  [Code: Ling](https://github.com/inclusionAI/Ling)