gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/lib/Lower/Bridge.cpp",
    "//flang/test/Driver/emit-mlir.f90",
    "//flang/test/Lower/HLFIR/calls-f77.f90",
    "//flang/test/Lower/HLFIR/dummy-scope.f90",
    "//flang/test/Lower/OpenMP/real10.f90",
    "//flang/test/Lower/main_location.f90",
    "//flang/test/Transforms/tbaa-with-dummy-scope2.fir"
  ],
  "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": []
}