gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//llvm/utils/gn/secondary/llvm/lib/ExecutionEngine/Orc/TargetProcess/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/unittests/ExecutionEngine/Orc/BUILD.gn",
    "//mlir/include/mlir/Dialect/SCF/Utils/Utils.h",
    "//mlir/lib/Dialect/OpenMP/Transforms/OpenMPOffloadPrivatizationPrepare.cpp",
    "//mlir/lib/Dialect/SCF/IR/SCF.cpp",
    "//mlir/lib/Dialect/SCF/Utils/Utils.cpp",
    "//mlir/test/Dialect/SCF/parallel-loop-unroll.mlir",
    "//mlir/test/lib/Dialect/SCF/CMakeLists.txt",
    "//mlir/test/lib/Dialect/SCF/TestParallelLoopUnrolling.cpp",
    "//mlir/tools/mlir-opt/mlir-opt.cpp"
  ],
  "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": []
}