gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "test_targets": [
    "//clang/test:check-clang",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ]
}
gn analyze input:
{
  "files": [
    "//libc/cmake/modules/LLVMLibCTestRules.cmake",
    "//libc/test/include/complex_test.cpp",
    "//libc/test/integration/src/pthread/pthread_barrier_test.cpp",
    "//libc/test/src/math/exhaustive/bfloat16_add_test.cpp",
    "//libc/test/src/math/exhaustive/bfloat16_div_test.cpp",
    "//libc/test/src/math/exhaustive/bfloat16_mul_test.cpp",
    "//libc/test/src/math/exhaustive/bfloat16_sub_test.cpp",
    "//libc/test/src/signal/sigaltstack_test.cpp",
    "//libc/test/src/stdio/fileop_test.cpp",
    "//libc/test/src/stdio/fopen_test.cpp",
    "//libc/test/src/sys/socket/linux/send_recv_test.cpp",
    "//libc/test/src/sys/socket/linux/sendmsg_recvmsg_test.cpp",
    "//libc/test/src/sys/socket/linux/sendto_recvfrom_test.cpp",
    "//libc/test/src/time/ctime_r_test.cpp",
    "//libc/test/src/time/mktime_test.cpp",
    "//llvm/test/tools/llvm-objdump/MachO/disassemble-source-dsym.test",
    "//llvm/tools/llvm-objdump/MachODump.cpp",
    "//llvm/utils/gn/secondary/llvm/lib/AsmParser/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/lib/Target/AMDGPU/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/lib/Target/Hexagon/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/unittests/ExecutionEngine/Orc/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": []
}