Author

Chunwei Xia

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Review Jul 2026

Decode-Time Grammars: Constrained LLM Generation over a Refinement Order of Grammar Fragments

Large language models now write a growing share of the world's code, increasingly inside agents and serving systems that compile, execute, or dispatch generated code without line-by-line review. This works well for mainstream languages but remains brittle for low-resource programming surfaces such as domain-specific la...

Shuoming Zhang, Ruiyuan Xu, Haofeng Li et al. · arXiv.org · 0 citations

Book Open access Jul 2026

Agent-Agnostic End-to-End C/C++ Application Performance Optimization

A code agent-agnostic agentic scaffold for automated code performance optimization that enables the system to autonomously execute the entire pipeline: project-level runtime analysis, hotspot identification and benchmark extraction, Abstract Syntax Tree (AST)-precise code localization, candidate patch generation, funct...

Hanning Lu, Chunwei Xia · ICS Workshops · 0 citations

Preprint Aug 2026

Can Large Language Models Recover Semantic Optimization Opportunities That Compilers Miss?

Results show that LLMs can complement compiler analysis as speculative semantic proposers, provided that their artifacts are validated and evaluated.

Hailong Jiang, Feng Yu, Emran Hossain et al. · 0 citations