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",
    "//compiler-rt/test/hwasan:check-hwasan",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ]
}
gn analyze input:
{
  "files": [
    "//clang/lib/CodeGen/Targets/Sparc.cpp",
    "//clang/test/CodeGen/Sparc/sparcv8-abi.c",
    "//lldb/test/Shell/Settings/Inputs/EchoCommandsAll.out",
    "//lldb/test/Shell/Settings/Inputs/EchoCommandsNoComments.out",
    "//lldb/test/Shell/Settings/Inputs/EchoCommandsNone.out",
    "//llvm/lib/Support/Regex.cpp",
    "//llvm/lib/Support/regcomp.c",
    "//llvm/lib/Transforms/IPO/GlobalOpt.cpp",
    "//llvm/test/FileCheck/escape.txt",
    "//llvm/test/Transforms/GlobalOpt/storepointer.ll",
    "//llvm/unittests/Support/RegexTest.cpp"
  ],
  "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": []
}