limitations under the License.
==============================================================================*/
#include "tensorflow/compiler/mlir/quantization/tensorflow/ops/tf_quantize_op.h"

#include <functional>
#include <optional>

#include "absl/strings/str_cat.h"
#include "absl/strings/str_join.h"
#include "absl/types/optional.h"

#include "mlir/Transforms/GreedyPatternRewriteDriver.h"  // from @llvm-project
#include "tensorflow/compiler/mlir/quantization/tensorflow/ops/tf_op_quant_spec.h"
#include "tensorflow/compiler/mlir/quantization/tensorflow/ops/tf_quantize_op.h"
#include "tensorflow/compiler/mlir/quantization/tensorflow/quantization_options.pb.h"
#include "tensorflow/compiler/mlir/tensorflow/ir/tf_dialect.h"
#include "tensorflow/compiler/mlir/tensorflow/ir/tf_ops.h"

// "qtype" attribute, we should update the type shape in this attribute.
def ReorderTransposeDequantQuant :
      Pat<(TF_TransposeOp:$old_value
              (TFL_DequantizeOp (TFL_QuantizeOp $input, $qtype)), $perm),
          (TFL_DequantizeOp (TFL_QuantizeOp
                                (TF_TransposeOp $input, $perm),
                                (UpdateShapeWithAxis<-1> $qtype, $old_value))),

                             (TFL_ExpandDimsOp $input, $dim)>;

def LegalizeFakeQuantToDequantizeQuantize : Pat<
  (TF_FakeQuantWithMinMaxArgsOp $inputs, $min, $max, $num_bits, $narrow_range),
  (TFL_DequantizeOp
   (TFL_QuantizeOp $inputs,
                   (ConvertToQuantTypeFromAttrs $inputs, $min, $max,
                    $num_bits, $narrow_range)))>;

def LegalizeFill : Pat<(TF_FillOp $arg, $value), (TFL_FillOp $arg, $value)>;