Worked on the google/xls repository to deliver a targeted compatibility fix in the LLVM JIT compilation path. Addressed a build and compatibility issue by updating the AbsoluteSymbols import in orc_jit.cc, reflecting recent internal relocations within LLVM. This change resolved MSan-related build failures and improved the stability of sanitizer-enabled builds without introducing any API modifications. The work required a strong understanding of C++ and the LLVM infrastructure, ensuring that downstream build processes remained stable as LLVM evolved. By maintaining backward compatibility, the update reduced build risks and supported smoother continuous integration cycles for projects depending on google/xls.