[GCU] Support gcu platform (#2702)

baseline: e7fa57ebae

Co-authored-by: yongqiangma <xing.wo@163.com>

fastdeploy/model_executor/pre_and_post_process.py

@@ -24,6 +24,11 @@ if current_platform.is_iluvatar():
     from fastdeploy.model_executor.ops.iluvatar import (
         get_padding_offset, save_output, set_stop_value_multi_ends,
         step_paddle, update_inputs)
+elif current_platform.is_gcu():
+    from fastdeploy.model_executor.ops.gcu import (get_padding_offset,
+                                                   save_output,
+                                                   set_stop_value_multi_ends,
+                                                   update_inputs)
 else:
     from fastdeploy.model_executor.ops.gpu import (
         get_padding_offset, save_output, set_stop_value_multi_ends,
@@ -391,6 +396,17 @@ def rebuild_padding(tmp_out: paddle.Tensor,
             output_padding_offset,
             max_input_length,
         )
+    elif current_platform.is_gcu():
+        from fastdeploy.model_executor.ops.gcu import rebuild_padding
+        hidden_states = rebuild_padding(
+            tmp_out,
+            cum_offsets,
+            seq_len_this_time,
+            seq_lens_decoder,
+            seq_lens_encoder,
+            output_padding_offset,
+            max_input_length,
+        )
     elif current_platform.is_cpu():
         from fastdeploy.model_executor.ops.cpu import rebuild_padding_cpu
         hidden_states = rebuild_padding_cpu(