gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "test_targets": [
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang"
  ]
}
gn analyze input:
{
  "files": [
    "//libcxx/docs/ReleaseNotes/21.rst",
    "//libcxx/docs/Status/Cxx23Papers.csv",
    "//libcxx/include/CMakeLists.txt",
    "//libcxx/include/__type_traits/reference_constructs_from_temporary.h",
    "//libcxx/include/__type_traits/reference_converts_from_temporary.h",
    "//libcxx/include/module.modulemap",
    "//libcxx/include/type_traits",
    "//libcxx/modules/std/type_traits.inc",
    "//libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/common.h",
    "//libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_implicit_lifetime.pass.cpp",
    "//libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_implicit_lifetime.verify.cpp",
    "//libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/reference_constructs_from_temporary.pass.cpp",
    "//libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/reference_converts_from_temporary.pass.cpp",
    "//llvm/utils/gn/secondary/libcxx/include/BUILD.gn"
  ],
  "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": []
}
running all tests due to change to blacklisted file