gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//llvm/docs/Extensions.rst",
    "//llvm/test/Analysis/DependenceAnalysis/same-sd-for-diff-becount-type-loops.ll",
    "//llvm/test/Analysis/DependenceAnalysis/symbolic-rdiv-overflow.ll",
    "//mlir/lib/Dialect/Async/IR/Async.cpp",
    "//mlir/lib/Dialect/DLTI/DLTI.cpp",
    "//mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp",
    "//mlir/lib/Dialect/Transform/Interfaces/TransformInterfaces.cpp",
    "//mlir/lib/IR/BuiltinTypeInterfaces.cpp",
    "//mlir/lib/IR/Operation.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": []
}