gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/docs/FortranLLVMTestSuite.md",
    "//mlir/lib/Dialect/Transform/IR/TransformDialect.cpp",
    "//mlir/lib/Dialect/Transform/IR/TransformOps.cpp",
    "//mlir/test/Dialect/Transform/ops-invalid.mlir",
    "//mlir/tools/mlir-tblgen/AttrOrTypeDefGen.cpp",
    "//mlir/tools/mlir-tblgen/CppGenUtilities.cpp",
    "//mlir/tools/mlir-tblgen/CppGenUtilities.h",
    "//mlir/tools/mlir-tblgen/DialectGen.cpp",
    "//mlir/tools/mlir-tblgen/EnumsGen.cpp",
    "//mlir/tools/mlir-tblgen/OpDefinitionsGen.cpp",
    "//mlir/tools/mlir-tblgen/OpInterfacesGen.cpp",
    "//mlir/tools/mlir-tblgen/TosaUtilsGen.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": []
}