gn analyze output:
{
  "compile_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"
  ],
  "status": "Found dependency (all)",
  "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"
  ]
}
gn analyze input:
{
  "files": [
    "//llvm/utils/gn/build/BUILD.gn",
    "//llvm/utils/gn/build/BUILDCONFIG.gn",
    "//llvm/utils/gn/secondary/clang/tools/clang-repl/BUILD.gn",
    "//llvm/utils/gn/secondary/clang/unittests/Interpreter/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/tools/llc/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/tools/lli/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/tools/llvm-jitlink/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/tools/opt/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/unittests/Analysis/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/unittests/CodeGen/CGPluginTest/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/unittests/ExecutionEngine/Orc/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/unittests/Passes/Plugins/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/unittests/Support/DynamicLibrary/BUILD.gn",
    "//llvm/utils/gn/secondary/third-party/unittest/unittest.gni"
  ],
  "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": []
}