add cast(int64) for embedding

x2paddle/op_mapper/onnx2paddle/opset9/opset.py

@@ -627,6 +627,12 @@ class OpSet9():
         elif axis == 0 and len(indices_shape) > 1:
             if val_x.out_shapes[0] is not None and isinstance(
                     val_x, ONNXGraphDataNode):
+                if indices.dtype != 'int64':
+                    node.fluid_code.add_layer(
+                        'cast',
+                        inputs=indices,
+                        output=indices,
+                        param_attr={'dtype': string('int64')})
                 node.fluid_code.add_layer(
                     'embedding',
                     inputs=indices,