gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libcxx/include/__random/discard_block_engine.h",
    "//libcxx/include/__random/linear_congruential_engine.h",
    "//libcxx/include/__random/mersenne_twister_engine.h",
    "//libcxx/include/__random/shuffle_order_engine.h",
    "//libcxx/include/__random/subtract_with_carry_engine.h",
    "//libcxx/include/__type_traits/integral_constant.h",
    "//libcxx/include/any",
    "//libcxx/include/limits",
    "//libcxx/include/ratio",
    "//libcxx/src/chrono.cpp",
    "//libcxx/src/filesystem/filesystem_clock.cpp",
    "//libcxx/src/filesystem/path.cpp",
    "//libcxxabi/src/cxa_demangle.cpp",
    "//runtimes/cmake/Modules/WarningFlags.cmake"
  ],
  "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": []
}
running all tests due to change to blacklisted file