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",
    "//compiler-rt/test/hwasan:check-hwasan",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ]
}
gn analyze input:
{
  "files": [
    "//clang/lib/InstallAPI/DirectoryScanner.cpp",
    "//clang/lib/Lex/InitHeaderSearch.cpp",
    "//clang/test/Driver/darwin-subframeworks.c",
    "//llvm/lib/TextAPI/Utils.cpp",
    "//llvm/lib/Transforms/Utils/SimplifyCFG.cpp",
    "//llvm/test/Transforms/SimplifyCFG/dbgloc-merge-invoke.ll",
    "//llvm/test/tools/llvm-readtapi/stubify-delete.test",
    "//llvm/tools/llvm-readtapi/llvm-readtapi.cpp"
  ],
  "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": []
}