remove useless move (#55430)

Author: chenwhql

paddle/fluid/eager/tensor_wrapper.h

@@ -63,10 +63,9 @@ class TensorWrapper {
             static_cast<phi::DenseTensor*>(tensor.impl().get());
         // TODO(jiabin): It's not a good idea to set memory size to zero, find
         // another way and change this.
-        intermidiate_tensor_.set_impl(
-            std::move(std::make_shared<phi::DenseTensor>(
-                std::make_shared<phi::Allocation>(nullptr, 0, tensor.place()),
-                std::move(dense_tensor->meta()))));
+        intermidiate_tensor_.set_impl(std::make_shared<phi::DenseTensor>(
+            std::make_shared<phi::Allocation>(nullptr, 0, tensor.place()),
+            dense_tensor->meta()));
       } else {
         PADDLE_THROW(paddle::platform::errors::Fatal(
             "Unrecognized tensor type for no_need_buffer feature"));
@@ -77,10 +76,9 @@ class TensorWrapper {
           tensor.is_dense_tensor() && tensor.initialized()) {
         phi::DenseTensor* dense_tensor =
             static_cast<phi::DenseTensor*>(tensor.impl().get());
-        intermidiate_tensor_.set_impl(
-            std::move(std::make_shared<phi::DenseTensor>(
-                std::make_shared<phi::Allocation>(nullptr, 0, tensor.place()),
-                dense_tensor->meta())));
+        intermidiate_tensor_.set_impl(std::make_shared<phi::DenseTensor>(
+            std::make_shared<phi::Allocation>(nullptr, 0, tensor.place()),
+            dense_tensor->meta()));
         auto pack_hook = egr::SavedTensorsHooks::GetInstance().GetPackHook();
         unpack_hook_ = egr::SavedTensorsHooks::GetInstance().GetUnPackHook();
         packed_value_ = (*pack_hook)(tensor);

paddle/phi/api/lib/tensor.cc

@@ -64,10 +64,10 @@ Tensor::Tensor(const Place &place) {
          "the `place`, and datatype, shape, layout, etc. is also "
          "required.";
   DefaultAllocator alloc(place);
-  impl_ = std::move(std::make_shared<phi::DenseTensor>(
+  impl_ = std::make_shared<phi::DenseTensor>(
       &alloc,
-      std::move(phi::DenseTensorMeta(
-          phi::DataType::FLOAT32, phi::make_ddim({}), phi::DataLayout::NCHW))));
+      phi::DenseTensorMeta(
+          phi::DataType::FLOAT32, phi::make_ddim({}), phi::DataLayout::NCHW));
 }
 
 Tensor::Tensor(const Place &place, const std::vector<int64_t> &shape) {
@@ -80,11 +80,11 @@ Tensor::Tensor(const Place &place, const std::vector<int64_t> &shape) {
          "the `place` and `shape`, and datatype, layout, etc. is also "
          "required.";
   DefaultAllocator alloc(place);
-  impl_ = std::move(std::make_shared<phi::DenseTensor>(
+  impl_ = std::make_shared<phi::DenseTensor>(
       &alloc,
-      std::move(phi::DenseTensorMeta(phi::DataType::FLOAT32,
-                                     phi::make_ddim({shape}),
-                                     phi::DataLayout::NCHW))));
+      phi::DenseTensorMeta(phi::DataType::FLOAT32,
+                           phi::make_ddim({shape}),
+                           phi::DataLayout::NCHW));
 }
 
 Tensor::Tensor(std::shared_ptr<phi::TensorBase> tensor_impl,
@@ -338,11 +338,11 @@ void *Tensor::data() {
 // TODO(chenweihang): replace slice impl by API
 Tensor Tensor::slice(int64_t begin_idx, int64_t end_idx) const {
   if (is_dense_tensor()) {
-    return Tensor(std::make_shared<phi::DenseTensor>(
-        std::move(phi::DenseTensorUtils::Slice(
+    return Tensor(
+        std::make_shared<phi::DenseTensor>(phi::DenseTensorUtils::Slice(
             *(static_cast<phi::DenseTensor *>(impl_.get())),
             begin_idx,
-            end_idx))));
+            end_idx)));
   } else {
     PADDLE_THROW(phi::errors::Unimplemented(
         "Only support slice operation on DenseTensor now."));