gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//mlir/include/mlir/Dialect/MemRef/IR/MemRef.h",
    "//mlir/include/mlir/Dialect/MemRef/IR/MemRefDialect.h",
    "//mlir/lib/Conversion/MemRefToEmitC/MemRefToEmitCPass.cpp",
    "//mlir/lib/Conversion/SCFToGPU/SCFToGPU.cpp",
    "//mlir/lib/RegisterAllDialects.cpp",
    "//mlir/test/lib/Dialect/Affine/TestAffineDataCopy.cpp",
    "//mlir/test/lib/Dialect/Affine/TestReifyValueBounds.cpp",
    "//mlir/test/lib/Dialect/GPU/TestGpuMemoryPromotion.cpp",
    "//mlir/test/lib/Dialect/GPU/TestGpuRewrite.cpp",
    "//mlir/test/lib/Dialect/OpenACC/TestOpenACCSupport.cpp",
    "//mlir/test/lib/Dialect/OpenACC/TestPointerLikeTypeInterface.cpp",
    "//mlir/test/lib/Dialect/OpenACC/TestRecipePopulate.cpp",
    "//mlir/unittests/Dialect/OpenACC/OpenACCUtilsCGTest.cpp",
    "//mlir/unittests/Dialect/OpenACC/OpenACCUtilsLoopTest.cpp",
    "//mlir/unittests/Dialect/OpenACC/OpenACCUtilsTilingTest.cpp",
    "//utils/bazel/llvm-project-overlay/libc/test/UnitTest/BUILD.bazel"
  ],
  "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": []
}