gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/test/CMakeLists.txt",
    "//flang/tools/f18/CMakeLists.txt",
    "//llvm/runtimes/CMakeLists.txt",
    "//mlir/include/mlir/Dialect/LLVMIR/LLVMAttrDefs.td",
    "//mlir/include/mlir/Dialect/LLVMIR/LLVMInterfaces.h",
    "//mlir/include/mlir/Dialect/LLVMIR/LLVMInterfaces.td",
    "//mlir/include/mlir/Dialect/LLVMIR/LLVMOps.td",
    "//mlir/include/mlir/Target/LLVMIR/ModuleImport.h",
    "//mlir/include/mlir/Target/LLVMIR/ModuleTranslation.h",
    "//mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp",
    "//mlir/lib/Dialect/LLVMIR/IR/LLVMInterfaces.cpp",
    "//mlir/lib/Target/LLVMIR/Dialect/LLVMIR/LLVMIRToLLVMTranslation.cpp",
    "//mlir/lib/Target/LLVMIR/ModuleImport.cpp",
    "//mlir/lib/Target/LLVMIR/ModuleTranslation.cpp",
    "//mlir/test/Dialect/LLVMIR/dereferenceable-invalid.mlir",
    "//mlir/test/Target/LLVMIR/Import/import-failure.ll",
    "//mlir/test/Target/LLVMIR/Import/metadata-dereferenceable.ll",
    "//mlir/test/Target/LLVMIR/attribute-dereferenceable.mlir"
  ],
  "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": []
}