gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//llvm/test/CodeGen/AMDGPU/flat_atomics_i64.ll",
    "//llvm/test/CodeGen/AMDGPU/memory-legalizer-private-agent.ll",
    "//llvm/test/CodeGen/AMDGPU/memory-legalizer-private-cluster.ll",
    "//llvm/test/CodeGen/AMDGPU/memory-legalizer-private-singlethread.ll",
    "//llvm/test/CodeGen/AMDGPU/memory-legalizer-private-system.ll",
    "//llvm/test/CodeGen/AMDGPU/memory-legalizer-private-wavefront.ll",
    "//llvm/test/CodeGen/AMDGPU/memory-legalizer-private-workgroup.ll",
    "//mlir/include/mlir/Dialect/LLVMIR/LLVMIntrinsicOps.td",
    "//mlir/lib/Dialect/LLVMIR/IR/LLVMDialect.cpp",
    "//mlir/test/Dialect/LLVMIR/invalid.mlir",
    "//mlir/test/Dialect/LLVMIR/roundtrip.mlir",
    "//mlir/test/Target/LLVMIR/Import/fastmath.ll",
    "//mlir/test/Target/LLVMIR/Import/intrinsic.ll",
    "//mlir/test/Target/LLVMIR/llvmir-intrinsics.mlir"
  ],
  "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": []
}