gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//llvm/utils/gn/secondary/bolt/lib/Passes/BUILD.gn",
    "//llvm/utils/gn/secondary/clang/lib/CodeGen/BUILD.gn",
    "//llvm/utils/gn/secondary/libcxx/include/BUILD.gn",
    "//llvm/utils/gn/secondary/lldb/tools/lldb-dap/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/lib/Target/SystemZ/MCTargetDesc/BUILD.gn",
    "//mlir/include/mlir/Dialect/Vector/Transforms/LoweringPatterns.h",
    "//mlir/lib/Conversion/VectorToLLVM/ConvertVectorToLLVM.cpp",
    "//mlir/lib/Conversion/VectorToLLVM/ConvertVectorToLLVMPass.cpp",
    "//mlir/lib/Dialect/Mesh/Transforms/ShardingPropagation.cpp",
    "//mlir/lib/Dialect/Vector/Transforms/LowerVectorGather.cpp",
    "//mlir/test/Conversion/VectorToLLVM/vector-to-llvm-interface.mlir",
    "//mlir/test/Conversion/VectorToLLVM/vector-to-llvm.mlir",
    "//mlir/test/Dialect/Mesh/sharding-propagation-failed.mlir",
    "//mlir/test/lib/Dialect/Vector/TestVectorTransforms.cpp",
    "//utils/bazel/llvm-project-overlay/compiler-rt/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": []
}