gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//compiler-rt/lib/asan/asan_fake_stack.cpp",
    "//compiler-rt/test/asan/TestCases/fakeframe-right-redzone.cpp",
    "//compiler-rt/test/ubsan/TestCases/Integer/bit-int.c",
    "//flang/lib/Optimizer/Builder/IntrinsicCall.cpp",
    "//flang/test/Lower/Intrinsics/ieee_flag.f90",
    "//llvm/utils/gn/secondary/llvm/tools/dsymutil/BUILD.gn"
  ],
  "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": []
}