Yijia Gu worked on the espressif/llvm-project repository, focusing on improving the reliability of MLIR test builds. By identifying and addressing missing dependencies in the Bazel build configuration, Yijia updated the mlir/test/BUILD.bazel file to include new library targets within the cc_library rule. This change ensured that the MLIR test suite compiled and executed with all required components, restoring end-to-end test coverage in continuous integration workflows. Leveraging expertise in Bazel and build systems, Yijia’s targeted fix reduced flaky failures and unnecessary rebuilds, enhancing the maintainability and clarity of the test infrastructure for ongoing MLIR development.