gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/lib/Lower/OpenMP/OpenMP.cpp",
    "//flang/test/Lower/OpenMP/Todo/loop-directive.f90",
    "//flang/test/Lower/OpenMP/loop-directive.f90",
    "//mlir/include/mlir/Dialect/OpenMP/OpenMPOps.td",
    "//mlir/lib/Conversion/OpenMPToLLVM/OpenMPToLLVM.cpp",
    "//mlir/lib/Dialect/OpenMP/IR/OpenMPDialect.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": []
}