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": [
    "//libcxx/docs/ReleaseNotes/20.rst",
    "//libcxx/include/__filesystem/directory_entry.h",
    "//libcxx/include/__system_error/system_error.h",
    "//libcxx/src/filesystem/directory_iterator.cpp",
    "//libcxx/src/filesystem/error.h",
    "//libcxx/src/filesystem/file_descriptor.h",
    "//libcxx/src/filesystem/operations.cpp",
    "//libcxx/src/filesystem/posix_compat.h",
    "//libcxx/src/print.cpp",
    "//libcxx/src/system_error.cpp",
    "//libcxx/test/libcxx/diagnostics/system_error_win_codes.pass.cpp",
    "//libcxx/test/std/diagnostics/syserr/syserr.compare/eq_error_code_error_code.pass.cpp",
    "//libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.derived/message.pass.cpp",
    "//libcxx/test/std/diagnostics/syserr/syserr.errcat/syserr.errcat.objects/system_category.pass.cpp",
    "//libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/file_type_obs.pass.cpp",
    "//libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/status.pass.cpp",
    "//libcxx/test/std/input.output/filesystems/class.directory_entry/directory_entry.obs/symlink_status.pass.cpp",
    "//libcxx/test/support/filesystem_test_helper.h",
    "//llvm/lib/Transforms/Vectorize/SLPVectorizer.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": []
}
running all tests due to change to blacklisted file