don't insert assign from condition to true branch of while

mindspore/ccsrc/backend/optimizer/common/common_backend_optimization.cc

@@ -22,6 +22,7 @@
 #include "backend/optimizer/pass/convert_const_input_to_tensor_input.h"
 #include "backend/optimizer/pass/convert_tuple_input_to_dynamic_input.h"
 #include "backend/optimizer/pass/const_to_attr_strided_slice_grad.h"
+#include "backend/optimizer/pass/convert_const_scalar_to_tensor.h"
 #include "utils/context/ms_context.h"
 #include "debug/anf_ir_dump.h"
 
@@ -46,8 +47,9 @@ void BackendCommonOptimization(const std::shared_ptr<session::KernelGraph> &kern
   auto common_pm = std::make_shared<PassManager>("common_pm");
   common_pm->AddPass(std::make_shared<ConvertConstInputToAttr>());
   common_pm->AddPass(std::make_shared<ConstToAttrStridedSliceGradPass>());
-  common_pm->AddPass(std::make_shared<ConvertTupleOutputToMaketuple>());
   common_pm->AddPass(std::make_shared<ConvertConstInputToTensorInput>());
+  common_pm->AddPass(std::make_shared<ConvertTupleOutputToMaketuple>());
+  common_pm->AddPass(std::make_shared<ConvertConstScalarToTensor>());
   common_pm->AddPass(std::make_shared<ConvertTupleInputToDynamicInput>());
   optimizer->AddPassManager(common_pm);
   (void)optimizer->Optimize(kernel_graph);

mindspore/ccsrc/backend/optimizer/common/helper.cc

@@ -781,5 +781,27 @@ bool CheckSupportDataType(const AnfNodePtr &node, const std::set<TypeId> &suppor
   MS_LOG(DEBUG) << "Not supported data type. Node:" << node->DebugString();
   return false;
 }
+
+ValueNodePtr MakeValueNode(const ValueNodePtr &value_node) {
+  MS_EXCEPTION_IF_NULL(value_node);
+  ValueNodePtr new_value_node = std::make_shared<ValueNode>(value_node->value());
+  new_value_node->set_abstract(value_node->abstract());
+  // create kernel_info fo new value node
+  auto kernel_info = std::make_shared<device::KernelInfo>();
+  new_value_node->set_kernel_info(kernel_info);
+  // create kernel_build_info for new value node
+  auto kernel_build_info_builder = std::make_shared<kernel::KernelBuildInfo::KernelBuildInfoBuilder>();
+  // set the format of value_node to DEFAULT_FORMAT
+  kernel_build_info_builder->SetOutputsFormat(std::vector<std::string>{kOpFormat_DEFAULT});
+  // set value node initial device data type = infer data type
+  std::vector<TypeId> types;
+  for (size_t index = 0; index < AnfAlgo::GetOutputTensorNum(value_node); ++index) {
+    types.push_back(kTypeUnknown);
+  }
+  kernel_build_info_builder->SetOutputsDeviceType(types);
+  AnfAlgo::SetSelectKernelBuildInfo(kernel_build_info_builder->Build(), new_value_node.get());
+  return new_value_node;
+}
+
 }  // namespace opt
 }  // namespace mindspore

mindspore/ccsrc/backend/optimizer/common/helper.h

@@ -194,6 +194,9 @@ bool GetBoolAttr(const AnfNodePtr &node, const std::string &attr_name);
 
 // Check node's data type is in supported data type set
 bool CheckSupportDataType(const AnfNodePtr &node, const std::set<TypeId> &supported_data_type_set);
+
+// Create a new value node of func graph,not kernel graph
+ValueNodePtr MakeValueNode(const ValueNodePtr &value_node);
 }  // namespace opt
 }  // namespace mindspore
 #endif  // MINDSPORE_CCSRC_BACKEND_OPTIMIZER_COMMON_HELPER_H_

mindspore/ccsrc/backend/optimizer/pass/convert_const_input_to_tensor_input.cc

@@ -29,28 +29,8 @@
 namespace mindspore {
 namespace opt {
 namespace {
-ValueNodePtr MakeValueNode(const ValueNodePtr &value_node) {
-  MS_EXCEPTION_IF_NULL(value_node);
-  ValueNodePtr new_value_node = std::make_shared<ValueNode>(value_node->value());
-  new_value_node->set_abstract(value_node->abstract());
-  // create kernel_info fo new value node
-  auto kernel_info = std::make_shared<device::KernelInfo>();
-  new_value_node->set_kernel_info(kernel_info);
-  // create kernel_build_info for new value node
-  auto kernel_build_info_builder = std::make_shared<kernel::KernelBuildInfo::KernelBuildInfoBuilder>();
-  // set the format of value_node to DEFAULT_FORMAT
-  kernel_build_info_builder->SetOutputsFormat(std::vector<std::string>{kOpFormat_DEFAULT});
-  // set value node initial device data type = infer data type
-  std::vector<TypeId> types;
-  for (size_t index = 0; index < AnfAlgo::GetOutputTensorNum(value_node); ++index) {
-    types.push_back(kTypeUnknown);
-  }
-  kernel_build_info_builder->SetOutputsDeviceType(types);
-  AnfAlgo::SetSelectKernelBuildInfo(kernel_build_info_builder->Build(), new_value_node.get());
-  return new_value_node;
-}
 
-AnfNodePtr CreateTensorInput(const KernelGraphPtr &kernel_graph, const AnfNodePtr &input_node) {
+AnfNodePtr CreateTensorInput(const AnfNodePtr &node, const KernelGraphPtr &kernel_graph, const AnfNodePtr &input_node) {
   MS_EXCEPTION_IF_NULL(input_node);
   auto value_node = input_node->cast<ValueNodePtr>();
   MS_EXCEPTION_IF_NULL(value_node);
@@ -60,6 +40,9 @@ AnfNodePtr CreateTensorInput(const KernelGraphPtr &kernel_graph, const AnfNodePt
   if (value->isa<Scalar>()) {
     tensor_ptr = ScalarToTensor(value->cast<ScalarPtr>());
   } else if (value->isa<ValueTuple>()) {
+    if (!AnfAlgo::IsRealCNodeKernel(node)) {
+      return nullptr;
+    }
     tensor_ptr = CreateTupleTensor(value->cast<ValueTuplePtr>());
   } else {
     MS_LOG(EXCEPTION) << "The value should be a scalar or value tuple";
@@ -93,7 +76,7 @@ AnfNodePtr ConstInputToTensorInput(const FuncGraphPtr &func_graph, const CNodePt
   for (size_t i = 0; i < inputs.size() - 1; ++i) {
     auto input_node = inputs[i + 1];
     if (IsValueNode<Scalar>(input_node) || IsValueNode<ValueTuple>(input_node)) {
-      auto tensor_input = CreateTensorInput(kernel_graph, input_node);
+      auto tensor_input = CreateTensorInput(cnode, kernel_graph, input_node);
       if (tensor_input == nullptr) {
         new_inputs.push_back(input_node);
         continue;
@@ -139,7 +122,7 @@ AnfNodePtr ProcessGraphKernelOp(const AnfNodePtr &node) {
 
 const AnfNodePtr ConvertConstInputToTensorInput::Process(const FuncGraphPtr &func_graph, const AnfNodePtr &node,
                                                          const EquivPtr &) const {
-  if (node == nullptr || func_graph == nullptr || AnfAlgo::CheckPrimitiveType(node, prim::kPrimTupleGetItem)) {
+  if (node == nullptr || func_graph == nullptr || !AnfAlgo::IsRealCNodeKernel(node)) {
     return nullptr;
   }
   if (!node->isa<CNode>()) {

mindspore/ccsrc/backend/optimizer/pass/convert_const_scalar_to_tensor.cc

@@ -0,0 +1,87 @@
+/**
+ * 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.
+ */
+#include "backend/optimizer/pass/convert_const_scalar_to_tensor.h"
+
+#include <vector>
+#include <memory>
+#include <utility>
+
+#include "utils/graph_utils.h"
+#include "backend/optimizer/common/helper.h"
+#include "backend/session/anf_runtime_algorithm.h"
+#include "backend/session/kernel_graph.h"
+#include "backend/kernel_compiler/common_utils.h"
+#include "runtime/device/kernel_info.h"
+
+namespace mindspore {
+namespace opt {
+namespace {
+AnfNodePtr CreateTensorInput(const KernelGraphPtr &kernel_graph, const AnfNodePtr &input_node) {
+  MS_EXCEPTION_IF_NULL(input_node);
+  if (!input_node->isa<ValueNode>()) {
+    return nullptr;
+  }
+  auto value_node = input_node->cast<ValueNodePtr>();
+  MS_EXCEPTION_IF_NULL(value_node);
+  auto value = value_node->value();
+  MS_EXCEPTION_IF_NULL(value);
+  if (!value->isa<Scalar>()) {
+    return nullptr;
+  }
+  tensor::TensorPtr tensor_ptr = ScalarToTensor(value->cast<ScalarPtr>());
+  if (tensor_ptr == nullptr) {
+    MS_LOG(WARNING) << "Create tensor of" << input_node->DebugString() << "failed";
+    return nullptr;
+  }
+  auto tensor_input = std::make_shared<ValueNode>(tensor_ptr);
+  MS_EXCEPTION_IF_NULL(tensor_input);
+  tensor_input->set_abstract(tensor_ptr->ToAbstract());
+  if (kernel_graph != nullptr) {
+    tensor_input = kernel_graph->NewValueNode(tensor_input);
+    kernel_graph->AddValueNodeToGraph(tensor_input);
+  } else {
+    tensor_input = MakeValueNode(tensor_input);
+  }
+  tensor_input->set_scope(input_node->scope());
+  return tensor_input;
+}
+}  // namespace
+
+const AnfNodePtr ConvertConstScalarToTensor::Process(const FuncGraphPtr &func_graph, const AnfNodePtr &node,
+                                                     const EquivPtr &) const {
+  if (node == nullptr || func_graph == nullptr || AnfAlgo::CheckPrimitiveType(node, prim::kPrimTupleGetItem)) {
+    return nullptr;
+  }
+  if (!node->isa<CNode>()) {
+    return nullptr;
+  }
+  auto cnode = node->cast<CNodePtr>();
+  bool input_changed = false;
+  for (size_t i = 0; i < cnode->inputs().size(); ++i) {
+    auto new_input = CreateTensorInput(func_graph->cast<KernelGraphPtr>(), cnode->inputs()[i]);
+    if (new_input != nullptr) {
+      cnode->set_input(i, new_input);
+      input_changed = true;
+    }
+  }
+  auto kernel_graph = func_graph->cast<KernelGraphPtr>();
+  if (kernel_graph == nullptr || !input_changed) {
+    return nullptr;
+  }
+  return kernel_graph->NewCNode(cnode);
+}
+}  // namespace opt
+}  // namespace mindspore

mindspore/ccsrc/backend/optimizer/pass/convert_const_scalar_to_tensor.h

@@ -0,0 +1,35 @@
+/**
+ * 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.
+ */
+#ifndef MINDSPORE_CCSRC_BACKEND_OPTIMIZER_PASS_CONVERT_CONST_SCALAR_TO_TENSOR_H_
+#define MINDSPORE_CCSRC_BACKEND_OPTIMIZER_PASS_CONVERT_CONST_SCALAR_TO_TENSOR_H_
+#include <string>
+
+#include "ir/anf.h"
+#include "backend/optimizer/common/optimizer.h"
+
+namespace mindspore {
+namespace opt {
+class ConvertConstScalarToTensor : public PatternProcessPass {
+ public:
+  explicit ConvertConstScalarToTensor(bool multigraph = true)
+      : PatternProcessPass("convert_const_scalar_to_tensor", multigraph) {}
+  ~ConvertConstScalarToTensor() override = default;
+  const AnfNodePtr Process(const FuncGraphPtr &, const AnfNodePtr &, const EquivPtr &) const override;
+};
+}  // namespace opt
+}  // namespace mindspore
+
+#endif  // MINDSPORE_CCSRC_BACKEND_OPTIMIZER_PASS_CONVERT_CONST_SCALAR_TO_TENSOR_H_

mindspore/ccsrc/backend/optimizer/pass/convert_tuple_output_to_maketuple.cc

@@ -75,8 +75,10 @@ const AnfNodePtr ConvertTupleOutputToMaketuple::Process(const FuncGraphPtr &func
     }
   }
   auto kernel_graph = func_graph->cast<KernelGraphPtr>();
-  MS_EXCEPTION_IF_NULL(kernel_graph);
-  return cnode_input_changed ? kernel_graph->NewCNode(cnode) : nullptr;
+  if (kernel_graph == nullptr || !cnode_input_changed) {
+    return nullptr;
+  }
+  return kernel_graph->NewCNode(cnode);
 }
 }  // namespace opt
 }  // namespace mindspore

mindspore/ccsrc/backend/session/ascend_session.cc

@@ -881,22 +881,22 @@ void AscendSession::CreateMultiBranchOutput(NotNull<KernelGraphPtr> graph, NotNu
     return;
   }
   memo->insert(graph.get());
-
   graph->UpdateChildGraphOrder();
   for (auto &child_graph : graph->child_graph_order()) {
     CreateMultiBranchOutput(NOT_NULL(child_graph), memo);
   }
-
+  // If graph has no output, the graph is the true graph of while and will call condition graph, no need insert assign
+  // from condition to true graph
+  if (graph->get_output_null()) {
+    return;
+  }
   std::map<AnfNodePtr, AnfNodePtr> need_replace_list;
   auto node_list = GetCNodes(TopoSort(graph->get_return()));
   for (auto &node : node_list) {
     if (AnfAlgo::CheckPrimitiveType(node, prim::kPrimCall)) {
       // create a parameter to store the output of multiple branch and set the parameter as the condition graph's output
-      // auto multi_output_param = graph->NewParameter();
-      auto origin_inputs = graph->inputs();
       auto output_param = graph->TransTupleToMakeTuple(graph->NewParameter(node->abstract()));
       MS_EXCEPTION_IF_NULL(graph->MutableInputs());
-      graph->MutableInputs()->operator=(origin_inputs);
       graph->AddChildGraphResult(output_param);
 
       std::vector<AnfNodePtr> depend_inputs = {

mindspore/ccsrc/backend/session/kernel_graph.cc

@@ -133,7 +133,6 @@ AnfNodePtr KernelGraph::MakeValueNode(const AnfNodePtr &node) {
   if (value_node == nullptr) {
     return nullptr;
   }
-
   ValueNodePtr new_value_node = std::make_shared<ValueNode>(value_node->value());
   new_value_node->set_abstract(value_node->abstract());
   this->SetKernelInfoForNode(new_value_node);

tests/ut/cpp/pre_activate/pass/convert_const_input_to_tensor_input_test.cc

@@ -99,18 +99,13 @@ TEST_F(TestHWConstInputToTensorInput, test_value_tuple_tensor_input) {
   EXPECT_NE(ret->input(1)->cast<CNodePtr>(), nullptr);
   auto cnode = ret->input(1)->cast<CNodePtr>()->input(1)->cast<CNodePtr>();
   EXPECT_EQ(AnfAlgo::GetCNodeName(cnode), prim::kPrimDropoutGenMask->name());
-  std::vector<int> out;
-  for (size_t i = 1; i <= 4; i++) {
-    auto input = cnode->input(i);
-    ASSERT_TRUE(input != nullptr);
-    EXPECT_TRUE(IsValueNode<tensor::Tensor>(input));
-    auto tensor = input->cast<ValueNodePtr>()->value()->cast<tensor::TensorPtr>();
-    ASSERT_TRUE(tensor != nullptr);
-    int *data = (int *)(tensor->data_c());
-    ASSERT_TRUE(data != nullptr);
-    out.push_back(*data);
-  }
-  EXPECT_EQ(out, std::vector<int>({2, 4, 2, 2}));
+  auto input1 = cnode->input(1);
+  ASSERT_TRUE(input1 != nullptr);
+  EXPECT_TRUE(IsValueNode<tensor::Tensor>(input1));
+  auto tensor = input1->cast<ValueNodePtr>()->value()->cast<tensor::TensorPtr>();
+  ASSERT_TRUE(tensor != nullptr);
+  auto data = tensor->data_c();
+  EXPECT_EQ(std::vector<int>((int *)data, (int *)data + 4), std::vector<int>({2, 4, 2, 2}));
 }
 }  // namespace opt
 }  // namespace mindspore