gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libcxx/test/libcxx/input.output/iostreams.base/ios.base/ios.base.cons/dtor.uninitialized.pass.cpp",
    "//libcxx/test/std/input.output/file.streams/fstreams/filebuf.virtuals/setbuf.pass.cpp",
    "//libcxx/test/std/input.output/iostream.format/input.streams/istream.unformatted/sync.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/compare.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_fr_FR.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_ru_RU.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_zh_CN.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_fr_FR.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_ru_RU.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_zh_CN.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/curr_symbol.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/grouping.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.monetary/locale.moneypunct.byname/neg_format.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_double.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_float.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/category.numeric/locale.num.get/facet.num.get.members/get_long_double.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/grouping.pass.cpp",
    "//libcxx/test/std/localization/locale.categories/facet.numpunct/locale.numpunct.byname/thousands_sep.pass.cpp",
    "//libcxx/test/std/time/time.duration/time.duration.nonmember/ostream.pass.cpp",
    "//libcxx/test/std/time/time.syn/formatter.duration.pass.cpp",
    "//libcxx/test/std/time/time.syn/formatter.file_time.pass.cpp",
    "//libcxx/test/std/time/time.syn/formatter.hh_mm_ss.pass.cpp",
    "//libcxx/test/std/time/time.syn/formatter.local_time.pass.cpp",
    "//libcxx/test/std/time/time.syn/formatter.sys_time.pass.cpp",
    "//libcxx/utils/generate_feature_test_macro_components.py"
  ],
  "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": []
}