gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//mlir/include/mlir/Dialect/OpenACC/Analysis/OpenACCSupport.h",
    "//mlir/include/mlir/Dialect/OpenACC/OpenACCOps.td",
    "//mlir/include/mlir/Dialect/OpenACC/OpenACCUtils.h",
    "//mlir/lib/Dialect/OpenACC/Analysis/OpenACCSupport.cpp",
    "//mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp",
    "//mlir/lib/Dialect/OpenACC/Utils/OpenACCUtils.cpp",
    "//mlir/test/Dialect/OpenACC/support-analysis-recipename.mlir",
    "//mlir/test/Dialect/OpenACC/support-analysis-unsupported.mlir",
    "//mlir/test/lib/Dialect/OpenACC/TestOpenACCSupport.cpp",
    "//mlir/unittests/Dialect/OpenACC/OpenACCUtilsTest.cpp"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}