During October 2025, Wudexin developed and delivered the Basic Block Address Map v4 for the llvm/llvm-project repository, focusing on deterministic block identification and enhanced analysis workflows. The work involved implementing a dedicated pass in C++ for computing basic block hashes, integrating hash emission directly into the ELF file format, and updating the assembly printer to support this new functionality. Leveraging skills in code analysis, compiler development, and low-level optimization, Wudexin also improved Propeller tool matching and inference. Documentation was updated to reflect the new workflow, resulting in improved reproducibility, debugging efficiency, and automation for downstream analysis without introducing major bugs.