gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//llvm/test/CodeGen/AArch64/arm64-abi_align.ll",
    "//llvm/test/CodeGen/AMDGPU/loop-address.ll",
    "//llvm/test/CodeGen/Hexagon/insert4.ll",
    "//llvm/test/CodeGen/Hexagon/vect/vect-v4i16.ll",
    "//llvm/test/CodeGen/Hexagon/vect/vect-xor.ll",
    "//llvm/test/Transforms/LoopVectorize/dbg.value.ll",
    "//llvm/test/Transforms/LoopVectorize/vectorize-once.ll",
    "//llvm/test/Transforms/SimplifyCFG/volatile-phioper.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": []
}