message: Hotfix for unused variable in opt mode
diff: @@ -26,6 +26,7 @@ ValueHandle mlir::edsc::intrinsics::BR(BlockHandle bh,
  ArrayRef<ValueHandle> operands) {
  assert(bh && "Expected already captured BlockHandle");
  for (auto &o : operands) {
  + (void)o;
  assert(o && "Expected already captured ValueHandle");
  }
  SmallVector<Value *, 4> ops(operands.begin(), operands.end());
  