};

// Fold Extra Requantize ops if the preceding ops has free scale requirement.
template <typename RequantizeOpT>
struct FoldTrivalRequantizeOp : public OpRewritePattern<RequantizeOpT> {
  explicit FoldTrivalRequantizeOp(MLIRContext* context)
      : OpRewritePattern<RequantizeOpT>(context, 1) {}

  LogicalResult matchAndRewrite(RequantizeOpT op,
                                PatternRewriter& rewriter) const override {