clean unused code and small optimize

test=develop

paddle/fluid/framework/operator.cc

@@ -544,11 +544,13 @@ class RuntimeInferShapeContext : public InferShapeContext {
 
   void ShareLoD(const std::string& in, const std::string& out, size_t i = 0,
                 size_t j = 0) const override {
-    PADDLE_ENFORCE_LT(i, Inputs(in).size());
-    PADDLE_ENFORCE_LT(j, Outputs(out).size());
-    Variable* in_var = scope_.FindVar(Inputs(in)[i]);
-    Variable* out_var = scope_.FindVar(Outputs(out)[j]);
+    const std::vector<std::string>& inputs = Inputs(in);
+    const std::vector<std::string>& outputs = Outputs(out);
+    PADDLE_ENFORCE_LT(i, inputs.size());
+    PADDLE_ENFORCE_LT(j, outputs.size());
+    Variable* in_var = scope_.FindVar(inputs.at(i));
     if (!in_var->IsType<LoDTensor>()) return;
+    Variable* out_var = scope_.FindVar(outputs.at(j));
     PADDLE_ENFORCE(out_var->IsType<LoDTensor>(),
                    "The %d-th output of Output(%s) must be LoDTensor.", j, out);
     auto in_tensor = in_var->Get<LoDTensor>();
@@ -576,20 +578,6 @@ class RuntimeInferShapeContext : public InferShapeContext {
       out_tensor->set_layout(in_tensor.layout());
   }
 
-  void ShareLayout(const std::string& in, const std::string& out, size_t i = 0,
-                   size_t j = 0) const {
-    PADDLE_ENFORCE_LT(i, Inputs(in).size());
-    PADDLE_ENFORCE_LT(j, Outputs(out).size());
-    Variable* in_var = scope_.FindVar(Inputs(in)[i]);
-    Variable* out_var = scope_.FindVar(Outputs(out)[j]);
-    if (!in_var->IsType<LoDTensor>()) return;
-    PADDLE_ENFORCE(out_var->IsType<LoDTensor>(),
-                   "The %d-th output of Output(%s) must be LoDTensor.", j, out);
-    auto in_tensor = in_var->Get<LoDTensor>();
-    auto* out_tensor = out_var->GetMutable<LoDTensor>();
-    out_tensor->set_layout(in_tensor.layout());
-  }
-
   bool IsRuntime() const override { return true; }
 
  protected:

paddle/fluid/framework/shape_inference.cc

@@ -46,16 +46,6 @@ std::vector<DDim> InferShapeContext::GetReaderDims(
   return this->GetRepeatedDims(arg_names[0]);
 }
 
-void InferShapeContext::ShareLoDs(const std::string &in,
-                                  const std::string &out) const {
-  PADDLE_ENFORCE_EQ(Inputs(in).size(), Outputs(out).size(),
-                    "The number of arguments in %s and %s is not equal.", in,
-                    out);
-  for (size_t i = 0; i < in.size(); ++i) {
-    ShareLoD(in, out, i, i);
-  }
-}
-
 DDim InferShapeContext::GetInputsElementDim(const std::string &name,
                                             int idx) const {
   const std::vector<std::string> &names = Inputs(name);

paddle/fluid/framework/shape_inference.h

@@ -56,8 +56,6 @@ class InferShapeContext {
   virtual const std::vector<std::string> &Outputs(
       const std::string &name) const = 0;
 
-  void ShareLoDs(const std::string &in, const std::string &out) const;
-
   virtual void ShareLoD(const std::string &in, const std::string &out,
                         size_t i = 0, size_t j = 0) const = 0;