gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "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"
  ]
}
gn analyze input:
{
  "files": [
    "//clang-tools-extra/clang-tidy/utils/HeaderGuard.cpp",
    "//clang/lib/Frontend/CompilerInstance.cpp",
    "//clang/lib/Frontend/Rewrite/FrontendActions.cpp",
    "//clang/tools/driver/driver.cpp",
    "//llvm/lib/CodeGen/RDFGraph.cpp",
    "//llvm/lib/Support/StringRef.cpp",
    "//llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp"
  ],
  "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": []
}