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/Target/SystemZ/SystemZLongBranch.cpp",
    "//llvm/lib/Target/X86/X86AsmPrinter.cpp",
    "//llvm/test/CodeGen/SystemZ/fake-use-size.ll",
    "//llvm/test/CodeGen/Thumb2/mve-shuffle.ll",
    "//llvm/test/CodeGen/Thumb2/mve-vld3.ll",
    "//llvm/test/CodeGen/Thumb2/schedm7-hazard.ll",
    "//llvm/test/CodeGen/X86/kcfi-arity.ll",
    "//llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/cppcoreguidelines/BUILD.gn",
    "//runtimes/CMakeLists.txt",
    "//utils/bazel/llvm-project-overlay/mlir/BUILD.bazel"
  ],
  "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": []
}