From e893368fae364d50777abcfe47ee35a17b0f147a Mon Sep 17 00:00:00 2001
From: wuxuejian <wuxuejian1@huawei.com>
Date: Wed, 16 Sep 2020 15:09:43 +0800
Subject: [PATCH] add padding grad op

---
 mindspore/ops/_grad/grad_array_ops.py    | 13 ++++++++++
 mindspore/ops/_op_impl/aicpu/__init__.py |  1 -
 mindspore/ops/_op_impl/aicpu/unique.py   | 31 ------------------------
 3 files changed, 13 insertions(+), 32 deletions(-)
 delete mode 100644 mindspore/ops/_op_impl/aicpu/unique.py

diff --git a/mindspore/ops/_grad/grad_array_ops.py b/mindspore/ops/_grad/grad_array_ops.py
index 0caf25f316..a04a18cdbe 100644
--- a/mindspore/ops/_grad/grad_array_ops.py
+++ b/mindspore/ops/_grad/grad_array_ops.py
@@ -244,6 +244,19 @@ def get_bprop_embedding_lookup(self):
     return bprop_sparse
 
 
+@bprop_getters.register(P.Padding)
+def get_bprop_padding(self):
+    """Grad definition for `Padding` operation."""
+
+    def bprop(x, out, dout):
+        shp = shape_op(x)
+        begin = tuple([0 for _ in shp])
+        dx = P.Slice()(dout, begin, shp)
+        return (dx,)
+
+    return bprop
+
+
 @bprop_getters.register(P.Transpose)
 def get_bprop_transpose(self):
     """Generate bprop for Transpose"""
diff --git a/mindspore/ops/_op_impl/aicpu/__init__.py b/mindspore/ops/_op_impl/aicpu/__init__.py
index bb63d4bf32..b321db47e0 100644
--- a/mindspore/ops/_op_impl/aicpu/__init__.py
+++ b/mindspore/ops/_op_impl/aicpu/__init__.py
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 """aicpu ops"""
-from .unique import _unique_aicpu
 from .init_data_set_queue import _init_data_set_queue_aicpu
 from .embedding_lookup import _embedding_lookup_aicpu
 from .padding import _padding_aicpu
diff --git a/mindspore/ops/_op_impl/aicpu/unique.py b/mindspore/ops/_op_impl/aicpu/unique.py
deleted file mode 100644
index 849e969609..0000000000
--- a/mindspore/ops/_op_impl/aicpu/unique.py
+++ /dev/null
@@ -1,31 +0,0 @@
-# Copyright 2020 Huawei Technologies Co., Ltd
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-# ============================================================================
-
-"""Unique op"""
-from mindspore.ops.op_info_register import op_info_register, AiCPURegOp, DataType
-
-unique_op_info = AiCPURegOp("Unique") \
-    .fusion_type("OPAQUE") \
-    .input(0, "x", "required") \
-    .output(0, "y", "required") \
-    .output(1, "idx", "required") \
-    .dtype_format(DataType.I32_Default, DataType.I32_Default, DataType.I32_Default) \
-    .dtype_format(DataType.I64_Default, DataType.I64_Default, DataType.I64_Default) \
-    .get_op_info()
-
-@op_info_register(unique_op_info)
-def _unique_aicpu():
-    """Unique AiCPU register"""
-    return