gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//compiler-rt/test/builtins/Unit/fixunstfdi_test.c",
    "//compiler-rt/test/builtins/Unit/multc3_test.c",
    "//llvm/test/CodeGen/AMDGPU/gfx1250-scratch-scope-se.ll",
    "//mlir/examples/standalone/python/CMakeLists.txt",
    "//mlir/examples/standalone/python/StandaloneExtensionNanobind.cpp",
    "//mlir/examples/standalone/python/StandaloneExtensionPybind11.cpp",
    "//mlir/examples/standalone/test/CAPI/CMakeLists.txt",
    "//mlir/examples/standalone/test/CAPI/standalone-capi-test.c",
    "//mlir/examples/standalone/test/python/smoketest.py",
    "//mlir/test/CMakeLists.txt"
  ],
  "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": []
}