Worked on the LuisaCompute repository, focusing on maintaining and improving the reliability of the intermediate representation (IR) subsystem. Addressed a critical bug in the IR’s doubly linked list insertion logic by ensuring correct updates to both predecessor and successor pointers, which restored list integrity and prevented data corruption during IR processing. This fix reduced the risk of downstream failures in compilation passes and contributed to a more stable development pipeline. The work demonstrated strong skills in C++ and low-level programming, with a particular emphasis on data structures and debugging, prioritizing long-term maintainability and correctness over the addition of new features.