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/AST/ByteCode/Compiler.cpp",
    "//clang/test/AST/ByteCode/builtin-constant-p.cpp",
    "//llvm/lib/Target/X86/X86ISelLowering.cpp",
    "//llvm/test/CodeGen/X86/masked_store_trunc_ssat.ll",
    "//llvm/test/CodeGen/X86/masked_store_trunc_usat.ll",
    "//llvm/test/CodeGen/X86/vector-fshl-256.ll",
    "//llvm/test/CodeGen/X86/vector-fshl-rot-256.ll",
    "//llvm/test/CodeGen/X86/vector-fshr-256.ll",
    "//llvm/test/CodeGen/X86/vector-fshr-rot-256.ll",
    "//llvm/test/CodeGen/X86/vector-rotate-256.ll",
    "//llvm/test/CodeGen/X86/vector-trunc-packus.ll",
    "//llvm/test/CodeGen/X86/vector-trunc-ssat.ll",
    "//llvm/test/CodeGen/X86/vector-trunc-usat.ll"
  ],
  "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": []
}