gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//llvm/test/CodeGen/X86/avx-vperm2x128.ll",
    "//llvm/test/CodeGen/X86/insertps-combine.ll",
    "//llvm/test/CodeGen/X86/var-permute-128.ll",
    "//llvm/test/CodeGen/X86/var-permute-256.ll",
    "//llvm/test/CodeGen/X86/var-permute-512.ll",
    "//llvm/test/CodeGen/X86/vector-shuffle-combining-avx2.ll",
    "//llvm/test/CodeGen/X86/vector-shuffle-combining-xop.ll",
    "//llvm/test/CodeGen/X86/vector-shuffle-combining.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": []
}