gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//.ci/compute_projects.py",
    "//.ci/compute_projects_test.py",
    "//.ci/monolithic-linux.sh",
    "//.github/workflows/premerge.yaml",
    "//llvm/test/CodeGen/PowerPC/peephole-elim-extsw-subreg-input.mir",
    "//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",
    "//compiler-rt/test/hwasan:check-hwasan",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}