Worked on the google/XNNPACK repository to address a critical build compatibility issue affecting ARM SME2 configurations. Focused on the GEMMBenchmark component, the developer resolved a blocking build failure by updating the constructor signature from size_t to ConstantOrFunction in both the implementation and header files. This change preserved API compatibility, ensuring that SME2-enabled builds remained stable without requiring modifications from downstream consumers. The work demonstrated a strong command of C++ and build systems, with careful attention to type-system improvements that enhance code robustness. By proactively fixing this issue, the developer reduced release risk and maintained accessibility of SME-enabled performance paths.