gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "test_targets": [
    "//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/cmake/modules/ClangConfig.cmake.in",
    "//cmake/Modules/GetTripleCMakeSystemName.cmake",
    "//cmake/Modules/NormalizeTriple.cmake",
    "//llvm/cmake/modules/LLVMConfig.cmake.in",
    "//llvm/cmake/modules/LLVMExternalProjectUtils.cmake",
    "//llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp",
    "//llvm/lib/Target/AMDGPU/SIISelLowering.cpp",
    "//llvm/runtimes/CMakeLists.txt",
    "//llvm/test/CodeGen/AMDGPU/packed-fp64.ll",
    "//llvm/test/CodeGen/AMDGPU/packed-u64.ll",
    "//llvm/test/CodeGen/AMDGPU/pk-lshl-add-u64.ll",
    "//llvm/test/CodeGen/AMDGPU/shl.v2i64.ll",
    "//runtimes/CMakeLists.txt"
  ],
  "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": []
}