gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//clang/docs/ReleaseNotes.rst",
    "//llvm/docs/ReleaseNotes.md",
    "//llvm/test/CodeGen/AArch64/complex-int-to-fp.ll",
    "//mlir/include/mlir/Dialect/Tosa/IR/TosaOps.td",
    "//mlir/include/mlir/Dialect/Tosa/IR/TosaShapeOps.td",
    "//mlir/test/Dialect/Tosa/availability.mlir"
  ],
  "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": []
}