gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//lldb/include/lldb/Core/Mangled.h",
    "//lldb/include/lldb/Core/RichManglingContext.h",
    "//lldb/include/lldb/Target/Language.h",
    "//lldb/source/Core/CMakeLists.txt",
    "//lldb/source/Core/Mangled.cpp",
    "//lldb/source/Core/Module.cpp",
    "//lldb/source/Core/RichManglingContext.cpp",
    "//lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp",
    "//lldb/source/Plugins/Language/CMakeLists.txt",
    "//lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp",
    "//lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.h",
    "//lldb/source/Plugins/Language/ObjC/ObjCLanguage.cpp",
    "//lldb/source/Plugins/Language/ObjC/ObjCLanguage.h",
    "//lldb/source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp",
    "//lldb/unittests/Core/CMakeLists.txt",
    "//lldb/unittests/Core/RichManglingContextTest.cpp",
    "//lldb/unittests/Language/CPlusPlus/CPlusPlusLanguageTest.cpp",
    "//llvm/utils/gn/secondary/llvm/tools/dsymutil/BUILD.gn"
  ],
  "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": []
}