gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//llvm/test/Transforms/ADCE/2016-09-06.ll",
    "//llvm/test/Transforms/ADCE/blocks-with-dead-term-nondeterministic.ll",
    "//llvm/test/Transforms/AddDiscriminators/basic.ll",
    "//llvm/test/Transforms/AddDiscriminators/call-nested.ll",
    "//llvm/test/Transforms/AddDiscriminators/call.ll",
    "//llvm/test/Transforms/AddDiscriminators/diamond.ll",
    "//llvm/test/Transforms/AddDiscriminators/first-only.ll",
    "//llvm/test/Transforms/AddDiscriminators/invoke.ll",
    "//llvm/test/Transforms/AddDiscriminators/multiple.ll",
    "//llvm/test/Transforms/AddDiscriminators/no-discriminators.ll",
    "//llvm/test/Transforms/AddDiscriminators/oneline.ll",
    "//llvm/test/Transforms/Attributor/reduced/register_benchmark_test.ll",
    "//llvm/test/Transforms/CodeGenPrepare/ARM/bitreverse-recognize.ll",
    "//llvm/test/Transforms/CodeGenPrepare/X86/bitreverse-hang.ll",
    "//llvm/test/Transforms/CodeGenPrepare/dom-tree.ll",
    "//llvm/test/Transforms/ConstantHoisting/X86/ehpad.ll",
    "//llvm/test/Transforms/Coroutines/coro-debug.ll",
    "//llvm/test/Transforms/Coroutines/coro-split-dbg.ll",
    "//llvm/test/Transforms/Util/dbg-user-of-aext.ll",
    "//llvm/test/Transforms/Util/libcalls-fast-math-inf-loop.ll"
  ],
  "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": []
}