gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libcxx/include/CMakeLists.txt",
    "//libcxx/include/__pstl/backends/libdispatch.h",
    "//libcxx/include/__pstl/backends/serial.h",
    "//libcxx/include/__pstl/backends/std_thread.h",
    "//libcxx/include/__pstl/cpu_algos/any_of.h",
    "//libcxx/include/__pstl/cpu_algos/fill.h",
    "//libcxx/include/__pstl/cpu_algos/find_if.h",
    "//libcxx/include/__pstl/cpu_algos/for_each.h",
    "//libcxx/include/__pstl/cpu_algos/merge.h",
    "//libcxx/include/__pstl/cpu_algos/stable_sort.h",
    "//libcxx/include/__pstl/cpu_algos/transform.h",
    "//libcxx/include/__pstl/cpu_algos/transform_reduce.h",
    "//libcxx/include/libcxx.imp",
    "//libcxx/include/module.modulemap",
    "//llvm/utils/gn/secondary/libcxx/include/BUILD.gn",
    "//mlir/lib/Dialect/LLVMIR/IR/LLVMTypes.cpp"
  ],
  "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