gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/lib/Optimizer/Transforms/AddDebugInfo.cpp",
    "//flang/test/Integration/debug-use-stmt-order.f90",
    "//lldb/include/lldb/Target/RegisterTypeBuilder.h",
    "//lldb/include/lldb/Utility/RegisterType.h",
    "//lldb/source/Plugins/RegisterTypeBuilder/RegisterTypeBuilderClang.cpp",
    "//lldb/source/Plugins/RegisterTypeBuilder/RegisterTypeBuilderClang.h",
    "//lldb/source/Utility/RegisterType.cpp",
    "//lldb/unittests/Target/CMakeLists.txt",
    "//lldb/unittests/Target/RegisterTypeBuilderClangTest.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": []
}