gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//compiler-rt/docs/ASanABI.md",
    "//compiler-rt/docs/BuildingCompilerRT.md",
    "//compiler-rt/docs/TestingGuide.md",
    "//flang/docs/CMakeLists.txt",
    "//flang/docs/CommandGuide/index.md",
    "//libsycl/docs/CodingGuidelines.md",
    "//libsycl/docs/index.md",
    "//libsycl/test/README.md",
    "//libunwind/docs/BuildingLibunwind.md",
    "//libunwind/docs/conf.py",
    "//libunwind/docs/index.md",
    "//lldb/source/Plugins/TraceExporter/common/TraceHTR.h",
    "//lldb/source/Plugins/TraceExporter/docs/htr.md",
    "//llvm-libgcc/docs/LLVMLibgcc.md",
    "//llvm-libgcc/generate_version_script.py",
    "//offload/docs/conf.py",
    "//offload/docs/index.md"
  ],
  "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": []
}