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/Transforms/InstCombine/InstCombineAndOrXor.cpp",
    "//llvm/lib/Transforms/InstCombine/InstructionCombining.cpp",
    "//llvm/lib/Transforms/Scalar/DFAJumpThreading.cpp",
    "//llvm/test/Transforms/DFAJumpThreading/dfa-jump-threading-transform.ll",
    "//llvm/test/Transforms/DFAJumpThreading/dfa-unfold-select.ll",
    "//llvm/test/Transforms/InstCombine/freeze.ll",
    "//llvm/test/Transforms/InstCombine/funnel.ll",
    "//llvm/utils/gn/secondary/bolt/lib/Core/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/lib/CAS/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/unittests/CAS/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": []
}