bool float_type_observed = false;
  bool int8_type_observed = false;
  bool uint8_type_observed = false;
  for (auto& input : op->getOpOperands()) {
    auto input_type = input.get().getType();
    if (IsF32ShapedType(input_type)) {
      float_type_observed = true;
    } else if (IsQI8Type(input_type)) {
      int8_type_observed = true;
    } else if (IsQUI8Type(input_type)) {
      uint8_type_observed = true;
    }
  }

// Returns true if 'op' is not TFL Quant / Dequant op. Returns False otherwise
// or if 'op' is null.
bool NotTFLQuantDequantizeOp(Operation* op);

// Returns true if it is a shaped type of f32 elements.
inline bool IsF32ShapedType(Type t) {
  if (auto shaped_type = mlir::dyn_cast_or_null<ShapedType>(t)) {
    return shaped_type.getElementType().isF32();
  }
  return false;
}

// Return true when the given element_type is QI8.

  if (a.size() > b.size()) return false;

  return std::equal(a.rbegin(), a.rend(), b.rbegin());
}

// Returns true if it is a shaped type of f32 elements.
inline bool IsF32ShapedType(Type t) {
  if (auto shaped_type = t.dyn_cast_or_null<ShapedType>()) {
    return shaped_type.getElementType().isF32();
  }
  return false;
}

// Returns true if it is a shaped type of bf16 elements.