gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "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"
  ]
}
gn analyze input:
{
  "files": [
    "//llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp",
    "//llvm/lib/MC/MCWin64EH.cpp",
    "//llvm/lib/Target/X86/X86WinEHUnwindV2.cpp",
    "//llvm/test/CodeGen/X86/win64-eh-unwindv2-errors.mir",
    "//llvm/test/CodeGen/X86/win64-eh-unwindv2.ll",
    "//llvm/unittests/Frontend/OpenMPIRBuilderTest.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": []
}