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": [
    "//compiler-rt/test/asan/TestCases/zero_alloc.cpp",
    "//compiler-rt/test/msan/zero_alloc.cpp",
    "//flang-rt/lib/runtime/pointer.cpp",
    "//libcxx/docs/DesignDocs/HeaderRemovalPolicy.rst",
    "//llvm/lib/Analysis/IR2Vec.cpp",
    "//mlir/lib/Dialect/OpenACC/IR/OpenACC.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": []
}