gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//clang/docs/AddressSanitizer.md",
    "//clang/docs/ClangStaticAnalyzer.md",
    "//clang/docs/CrossCompilation.md",
    "//clang/docs/DataFlowSanitizer.md",
    "//clang/docs/FunctionEffectAnalysis.md",
    "//clang/docs/LanguageExtensions.md",
    "//clang/docs/LeakSanitizer.md",
    "//clang/docs/LifetimeSafety.md",
    "//clang/docs/MemorySanitizer.md",
    "//clang/docs/RealtimeSanitizer.md",
    "//clang/docs/ReleaseNotes.md",
    "//clang/docs/ReleaseNotesTemplate.txt",
    "//clang/docs/SafeBuffers.md",
    "//clang/docs/SanitizerCoverage.md",
    "//clang/docs/ScalableStaticAnalysis/index.md",
    "//clang/docs/ThreadSafetyAnalysis.md",
    "//clang/docs/ThreadSanitizer.md",
    "//clang/docs/Toolchain.md",
    "//clang/docs/TypeSanitizer.md",
    "//clang/docs/UndefinedBehaviorSanitizer.md",
    "//clang/docs/WarningSuppressionMappings.md",
    "//clang/docs/conf.py"
  ],
  "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": []
}