gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//clang/cmake/caches/Fuchsia-stage2.cmake",
    "//flang/lib/Semantics/resolve-names.cpp",
    "//flang/test/Semantics/resolve09.f90",
    "//mlir/include/mlir/IR/ValueRange.h",
    "//mlir/lib/Dialect/Bufferization/Transforms/OwnershipBasedBufferDeallocation.cpp",
    "//mlir/lib/Dialect/ControlFlow/Transforms/BufferDeallocationOpInterfaceImpl.cpp",
    "//mlir/lib/Dialect/Linalg/Transforms/Fusion.cpp",
    "//mlir/lib/IR/OperationSupport.cpp",
    "//mlir/lib/Transforms/Utils/CFGToSCF.cpp",
    "//third-party/benchmark/WORKSPACE",
    "//third-party/update_benchmark.sh"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}