gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libcxx/include/CMakeLists.txt",
    "//libcxx/include/__configuration/compiler.h",
    "//libcxx/include/__memory/allocator.h",
    "//libcxx/include/__memory/shared_ptr.h",
    "//libcxx/include/__memory/unique_temporary_buffer.h",
    "//libcxx/include/__new/allocate.h",
    "//libcxx/include/__utility/small_buffer.h",
    "//libcxx/include/module.modulemap.in",
    "//libcxx/include/new",
    "//libcxx/src/include/aligned_alloc.h",
    "//libcxx/test/libcxx/language.support/support.dynamic/libcpp_deallocate.sh.cpp",
    "//libcxx/test/std/containers/container.adaptors/flat.map/flat.map.capacity/max_size.pass.cpp",
    "//libcxx/test/std/containers/container.adaptors/flat.multimap/flat.multimap.capacity/max_size.pass.cpp",
    "//libcxx/test/std/containers/container.adaptors/flat.multiset/flat.multiset.capacity/max_size.pass.cpp",
    "//libcxx/test/std/containers/container.adaptors/flat.set/flat.set.capacity/max_size.pass.cpp",
    "//libcxx/test/std/language.support/support.dynamic/hardware_inference_size.compile.pass.cpp",
    "//libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/size.pass.cpp",
    "//libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/pointer_destruction.pass.cpp",
    "//llvm/utils/gn/secondary/libcxx/include/BUILD.gn",
    "//utils/bazel/llvm-project-overlay/clang/BUILD.bazel",
    "//utils/bazel/llvm-project-overlay/clang/unittests/BUILD.bazel"
  ],
  "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