gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/lib/Optimizer/Transforms/AbstractResult.cpp",
    "//flang/lib/Optimizer/Transforms/AffineDemotion.cpp",
    "//flang/lib/Optimizer/Transforms/AffinePromotion.cpp",
    "//flang/lib/Optimizer/Transforms/ArrayValueCopy.cpp",
    "//flang/lib/Optimizer/Transforms/AssumedRankOpConversion.cpp",
    "//flang/lib/Optimizer/Transforms/CUFAddConstructor.cpp",
    "//flang/lib/Optimizer/Transforms/CUFComputeSharedMemoryOffsetsAndSize.cpp",
    "//flang/lib/Optimizer/Transforms/CUFGPUToLLVMConversion.cpp",
    "//flang/lib/Optimizer/Transforms/CUFOpConversion.cpp",
    "//flang/lib/Optimizer/Transforms/CharacterConversion.cpp",
    "//flang/lib/Optimizer/Transforms/ConstantArgumentGlobalisation.cpp",
    "//flang/lib/Optimizer/Transforms/ControlFlowConverter.cpp",
    "//flang/lib/Optimizer/Transforms/DebugTypeGenerator.cpp",
    "//flang/lib/Optimizer/Transforms/FIRToSCF.cpp",
    "//flang/lib/Optimizer/Transforms/GenRuntimeCallsForTest.cpp",
    "//flang/lib/Optimizer/Transforms/LoopVersioning.cpp",
    "//flang/lib/Optimizer/Transforms/MemoryAllocation.cpp",
    "//flang/lib/Optimizer/Transforms/MemoryUtils.cpp",
    "//flang/lib/Optimizer/Transforms/PolymorphicOpConversion.cpp",
    "//flang/lib/Optimizer/Transforms/SimplifyFIROperations.cpp",
    "//flang/lib/Optimizer/Transforms/SimplifyIntrinsics.cpp",
    "//flang/lib/Optimizer/Transforms/StackArrays.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": []
}