gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//clang/lib/CIR/Dialect/IR/CIRDialect.cpp",
    "//mlir/lib/Dialect/EmitC/IR/EmitC.cpp",
    "//mlir/lib/Dialect/GPU/IR/GPUDialect.cpp",
    "//mlir/lib/Dialect/MemRef/IR/MemRefOps.cpp",
    "//mlir/lib/Dialect/OpenACC/IR/OpenACC.cpp",
    "//mlir/lib/Dialect/SCF/IR/SCF.cpp",
    "//mlir/lib/Dialect/Shape/IR/Shape.cpp",
    "//mlir/lib/Dialect/Transform/TuneExtension/TuneExtensionOps.cpp",
    "//mlir/test/lib/Dialect/Test/TestOpDefs.cpp",
    "//mlir/unittests/Interfaces/ControlFlowInterfacesTest.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": []
}