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": [
    "//clang/lib/Driver/ToolChains/FreeBSD.cpp",
    "//clang/lib/Driver/ToolChains/Fuchsia.cpp",
    "//clang/lib/Driver/ToolChains/Haiku.cpp",
    "//clang/lib/Driver/ToolChains/NetBSD.cpp",
    "//clang/lib/Driver/ToolChains/OpenBSD.cpp",
    "//clang/test/Driver/freebsd.c",
    "//clang/test/Driver/fuchsia.c",
    "//clang/test/Driver/haiku.c",
    "//clang/test/Driver/netbsd.c",
    "//clang/test/Driver/openbsd.c",
    "//llvm/lib/Target/X86/X86ISelLoweringCall.cpp",
    "//llvm/lib/Target/X86/X86InstrInfo.cpp",
    "//llvm/test/CodeGen/X86/pr59305.ll",
    "//llvm/utils/gn/secondary/clang-tools-extra/clang-tidy/bugprone/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": []
}