Lin Yay contributed to the Xilinx/llvm-project repository by enhancing the MLIR Affine Dialect Utilities, focusing on memory allocation normalization flows. They extended the affine::normalizeMemRef API to return a FailureOr containing the resulting AllocLikeOp, such as memref.alloca or memref.alloc, rather than a simple LogicalResult. This change, implemented in C++ and leveraging skills in compiler development and IR manipulation, improved the downstream usability of the API by providing direct access to the normalized allocation operation. The work demonstrated a deep understanding of low-level optimization and addressed the need for more informative and streamlined memory allocation workflows in transformation passes.