gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//mlir/include/mlir/Dialect/IRDL/IR/IRDLAttributes.td",
    "//mlir/include/mlir/Dialect/IRDL/IR/IRDLOps.td",
    "//mlir/include/mlir/Dialect/IRDL/IR/IRDLTypes.td",
    "//mlir/lib/Bindings/Python/DialectIRDL.cpp",
    "//mlir/lib/Bindings/Python/IRAttributes.cpp",
    "//mlir/python/CMakeLists.txt",
    "//mlir/python/mlir/dialects/IRDLOps.td",
    "//mlir/python/mlir/dialects/irdl.py",
    "//mlir/test/mlir-tblgen/op-python-bindings.td",
    "//mlir/test/python/dialects/irdl.py",
    "//mlir/test/python/dialects/python_test.py",
    "//mlir/test/python/python_test_ops.td",
    "//mlir/tools/mlir-tblgen/OpPythonBindingGen.cpp",
    "//utils/bazel/llvm-project-overlay/mlir/BUILD.bazel"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}