gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/lib/Optimizer/OpenMP/DoConcurrentConversion.cpp",
    "//flang/test/Transforms/DoConcurrent/map_live_in_results.mlir",
    "//flang/test/Transforms/DoConcurrent/map_shape_info.f90",
    "//flang/test/Transforms/DoConcurrent/map_shift_info.f90",
    "//flang/test/Transforms/DoConcurrent/not_perfectly_nested.f90",
    "//flang/test/Transforms/DoConcurrent/skip_all_nested_loops.f90",
    "//mlir/lib/Conversion/ArithToSPIRV/ArithToSPIRV.cpp",
    "//mlir/test/Conversion/ArithToSPIRV/arith-to-spirv-unsupported.mlir",
    "//mlir/test/Conversion/ArithToSPIRV/arith-to-spirv.mlir",
    "//mlir/test/Conversion/ConvertToSPIRV/arith.mlir"
  ],
  "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": []
}