rewriter.replaceOpWithNewOp<arith::ConstantOp>(
        gl_op, rewriter.getIndexAttr(num_tensors));
    return success();
  }
};

class BuildConstantListAsAttr : public OpRewritePattern<BuildListOp> {
  using OpRewritePattern<BuildListOp>::OpRewritePattern;

 public:
  LogicalResult matchAndRewrite(BuildListOp bl_op,