gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//clang/lib/CIR/CodeGen/CIRGenItaniumCXXABI.cpp",
    "//clang/lib/CIR/CodeGen/CIRGenModule.cpp",
    "//clang/test/CIR/CodeGen/multi-vtable.cpp",
    "//clang/test/CIR/CodeGen/pointer-width-32bit.cpp",
    "//clang/test/CIR/CodeGen/rtti-member-pointer.cpp",
    "//clang/test/CIR/CodeGen/rtti-qualfn.cpp",
    "//clang/test/CIR/CodeGen/thunks.cpp",
    "//clang/test/CIR/CodeGen/vbase.cpp",
    "//clang/test/CIR/CodeGen/virtual-function-calls.cpp",
    "//clang/test/CIR/CodeGen/vtable-emission.cpp",
    "//clang/test/CIR/CodeGen/vtable-linkage-explicit-instantiation.cpp",
    "//clang/test/CIR/CodeGen/vtt.cpp",
    "//clang/test/CIR/CodeGenCXX/vtable-linkage.cpp",
    "//clang/test/CIR/CodeGenCXX/vtable-pure-deleted-funcs.cpp"
  ],
  "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": []
}