gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/lib/Lower/OpenACC.cpp",
    "//flang/test/Lower/OpenACC/acc-unstructured.f90",
    "//lldb/unittests/DAP/TestBase.cpp",
    "//llvm/test/Analysis/ScalarEvolution/backedge-taken-count-guard-info.ll",
    "//llvm/test/Analysis/ScalarEvolution/trip-multiple-guard-info.ll",
    "//mlir/include/mlir/Dialect/OpenACC/OpenACCOps.td",
    "//mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp",
    "//mlir/test/Dialect/OpenACC/ops.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": []
}