gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/lib/Optimizer/Builder/CUFCommon.cpp",
    "//flang/lib/Optimizer/Builder/Character.cpp",
    "//flang/lib/Optimizer/Builder/Complex.cpp",
    "//flang/lib/Optimizer/Builder/DoLoopHelper.cpp",
    "//flang/lib/Optimizer/Builder/FIRBuilder.cpp",
    "//flang/lib/Optimizer/Builder/HLFIRTools.cpp",
    "//flang/lib/Optimizer/Builder/IntrinsicCall.cpp",
    "//flang/lib/Optimizer/Builder/MutableBox.cpp",
    "//flang/lib/Optimizer/Builder/PPCIntrinsicCall.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Allocatable.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/ArrayConstructor.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Assign.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/CUDA/Descriptor.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Character.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Command.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Derived.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/EnvironmentDefaults.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Exceptions.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Execute.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Inquiry.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Intrinsics.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Main.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Numeric.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Pointer.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Ragged.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Reduction.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Stop.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Support.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/TemporaryStack.cpp",
    "//flang/lib/Optimizer/Builder/Runtime/Transformational.cpp",
    "//flang/lib/Optimizer/Builder/TemporaryStorage.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": []
}