add assign ops in composite_topi

mindspore/_extends/graph_kernel/model/model.py

@@ -152,6 +152,7 @@ class PrimLib:
         'ReduceMin': Prim(REDUCE),
         'make_tuple': Prim(CONTROL),
         'ControlDepend': Prim(CONTROL),
+        'Assign': Prim(ELEMWISE),
         '@ReduceInit': Prim(ELEMWISE),
     }
 

mindspore/ccsrc/backend/optimizer/graph_kernel/basic_ops_fusion.cc

@@ -48,7 +48,7 @@ bool IsBasicOp(const AnfNodePtr &node, bool is_before_kernel_select) {
     prim::kPrimRealDiv, prim::kPrimMul,   prim::kPrimMinimum,    prim::kPrimMaximum,   prim::kPrimLog,
     prim::kPrimPow,     prim::kPrimSub,   prim::kPrimRsqrt,      prim::kPrimSqrt,      prim::kPrimCast,
     prim::kPrimAddN,    prim::kPrimEqual, prim::kPrimReciprocal, prim::KPrimTransData, prim::kPrimSelect,
-    prim::kPrimGreater};
+    prim::kPrimGreater, prim::kPrimAssign};
 #else
   std::vector<PrimitivePtr> fusable_basic_ops;
 #endif

mindspore/ccsrc/backend/optimizer/graph_kernel/composite_ops_fusion.cc

@@ -54,7 +54,7 @@ bool IsBasicFuseOp(const AnfNodePtr &node, bool is_before_kernel_select) {
     prim::kPrimRealDiv, prim::kPrimMul,   prim::kPrimMinimum,    prim::kPrimMaximum,   prim::kPrimLog,
     prim::kPrimPow,     prim::kPrimSub,   prim::kPrimRsqrt,      prim::kPrimSqrt,      prim::kPrimCast,
     prim::kPrimAddN,    prim::kPrimEqual, prim::kPrimReciprocal, prim::KPrimTransData, prim::kPrimSelect,
-    prim::kPrimGreater};
+    prim::kPrimGreater, prim::kPrimAssign};
 #else
   std::vector<PrimitivePtr> basic_ops;
 #endif

mindspore/ops/_op_impl/akg/gpu/__init__.py

@@ -54,5 +54,6 @@ from .sub import _sub_akg
 from .tile import _tile_akg
 from .select import _select_akg
 from .greater import _greater_akg
+from .assign import _assign_akg
 
 # Please insert op register in lexicographical order of the filename.

mindspore/ops/_op_impl/akg/gpu/assign.py

@@ -0,0 +1,33 @@
+# 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.
+# ============================================================================
+
+"""Assign op"""
+from mindspore.ops.op_info_register import op_info_register, AkgGpuRegOp, DataType as DT
+
+op_info = AkgGpuRegOp("Assign") \
+    .fusion_type("ELEMWISE") \
+    .input(0, "x") \
+    .input(1, "y") \
+    .output(0, "output") \
+    .dtype_format(DT.F16_Default, DT.F16_Default, DT.F16_Default) \
+    .dtype_format(DT.F32_Default, DT.F32_Default, DT.F32_Default) \
+    .dtype_format(DT.I32_Default, DT.I32_Default, DT.I32_Default) \
+    .get_op_info()
+
+
+@op_info_register(op_info)
+def _assign_akg():
+    """Assign Akg register"""
+    return