message: Support assignment contractions
diff: @@ -212,6 +212,8 @@ class StripeGenerator {
  if (!combo_op.empty()) {
  AddIntrinsic(kernel.get(), combo_op, scalar_inputs, {ScalarName(op.output)});
  }
  + } else {
  + AddIntrinsic(kernel.get(), "assign", scalar_inputs, {ScalarName(op.output)});
  }
  // STORE
  