} else if (function_name.contains("conv2d")) {
      // For Conv2D, the channel dimension must be static to calculate the
      // feature group count.
      if (!HasStaticShapeAtDims(call_op->getOperand(0), /*dims=*/3)) {
        return absl::InternalError(
            "The channel dimension of Conv2D is required to be static.");
      }
    } else if (function_name.contains("conv3d")) {

    key: "narrow_range"
    value {
      b: true
    }
  }
  attr {
    key: "num_bits"
    value {
      i: 4
    }
  }
}
node {
  name: "BoxPredictor_4/ClassPredictor/Conv2D"
  op: "Conv2D"
  input: "input"
  input: "BoxPredictor_4/ClassPredictor/weights_quant/FakeQuantWithMinMaxVarsPerChannel"
  attr {
    key: "T"
    value {
      type: DT_FLOAT
    }
  }
  attr {

  %0 = "tf.Conv3D"(%arg0, %arg1) {padding = "SAME", strides = [1, 1, 1, 1, 1]} : (tensor<?x?x?x?x?xf32>, tensor<?x?x?x?x?xf32>) -> tensor<?x?x?x?x?xf32>
  func.return %0: tensor<?x?x?x?x?xf32>

  // CHECK-LABEL: conv3d_valid
  // CHECK:  %[[CST:.*]] = "tfl.no_value"() <{value}> : () -> none

         tensor<64x3x3x3xf32>
    %conv = "tfl.conv_2d"(%input_act, %w, %bias)

    but if it is supported, it will be rewritten as:

    %q_w = "tfl.pseudo_qconst"() {
         qtype = tensor<64x3x3x3x!quant.uniform<i8<-127:127>:f32, 1.000000e+00>>
    %conv = "tfl.conv_2d"(%input_act, %q_w, %bias)

    Note that this is part of reaching feature parity with the old quantizer for

    key: "narrow_range"
    value {
      b: true
    }
  }
  attr {
    key: "num_bits"
    value {
      i: 8
    }
  }
}
node {
  name: "BoxPredictor_4/ClassPredictor/Conv2D"
  op: "Conv2D"
  input: "input"
  input: "BoxPredictor_4/ClassPredictor/weights_quant/FakeQuantWithMinMaxVarsPerChannel"
  attr {
    key: "T"
    value {
      type: DT_FLOAT
    }
  }
  attr {

    key: "narrow_range"
    value {
      b: true
    }
  }
  attr {
    key: "num_bits"
    value {
      i: 4
    }
  }
}
node {
  name: "BoxPredictor_4/ClassPredictor/Conv2D"
  op: "Conv2D"
  input: "input"
  input: "BoxPredictor_4/ClassPredictor/weights_quant/FakeQuantWithMinMaxVarsPerChannel"
  attr {
    key: "T"
    value {
      type: DT_FLOAT
    }
  }
  attr {

}
// Confirm that the `stablehlo.convolution` is not converted to `tfl.conv_2d`.
// CHECK-LABEL: convolution_upstream_srq_non_const_filter
// CHECK-SAME: %[[ARG:.+]]: tensor<1x3x3x4x!quant.uniform<i8:f32, 1.000000e+00:-100>>
// CHECK: stablehlo.convolution
// CHECK-NOT: tfl.conv_2d

// -----

// Tests that if the window padding contains values of 0, tfl.pad op is not

  // CHECK: "tfl.conv_2d"(%arg0, %arg1, %arg2) <{dilation_h_factor = 2 : i32, dilation_w_factor = 2 : i32, fused_activation_function = "NONE", padding = "VALID", stride_h = 1 : i32, stride_w = 1 : i32}> : (tensor<1x112x80x128xf32>, tensor<128x3x3x128xf32>, tensor<128xf32>) -> tensor<1x108x76x128xf32>

      auto conv_result = rewriter.create<mhlo::ConvolutionOp>(
          conv_op.getLoc(), new_output_type, sliced_input, sliced_kernel,
          conv_op.getWindowStridesAttr(), conv_op.getPaddingAttr(),
          conv_op.getLhsDilationAttr(), conv_op.getRhsDilationAttr(),
          conv_op.getWindowReversalAttr(), conv_op.getDimensionNumbers(), 1, 1,
          conv_op.getPrecisionConfigAttr());

      conv_results.push_back(conv_result);

// This test is to test that if the flatbuffer omits the last optional input `bias` of tfl.conv_2d op, the flatbuffer_importer will automatically adds `none` value to tfl.conv_2d.

// CHECK: %[[CST:.*]] = "tfl.no_value"() <{value}> : () -> none