gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//mlir/lib/Conversion/ArithToAMDGPU/ArithToAMDGPU.cpp",
    "//mlir/lib/Conversion/VectorToGPU/VectorToGPU.cpp",
    "//mlir/lib/Conversion/VectorToLLVM/ConvertVectorToLLVM.cpp",
    "//mlir/lib/Conversion/VectorToSCF/VectorToSCF.cpp",
    "//mlir/lib/Conversion/VectorToSPIRV/VectorToSPIRV.cpp",
    "//mlir/test/Conversion/ArithToAMDGPU/scaling-extf.mlir",
    "//mlir/test/Conversion/ArithToAMDGPU/scaling-truncf.mlir",
    "//mlir/test/Conversion/ConvertToSPIRV/vector.mlir",
    "//mlir/test/Conversion/VectorToLLVM/vector-to-llvm-interface.mlir",
    "//mlir/test/Conversion/VectorToSPIRV/vector-to-spirv.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": []
}