[NPU] support list of tensor input (#31801)

* support list of tensor as npu input

* add comment

* fix typo

* fix typo

paddle/fluid/operators/npu_op_runner.cc

@@ -185,6 +185,21 @@ NpuOpRunner &NpuOpRunner::AddInputs(const std::vector<Tensor> &tensors) {
   return *this;
 }
 
+// NOTE(zhiqiu): For operators whose input is a list (such as concat, stack),
+// It is needed to set the name of each input tensor.
+NpuOpRunner &NpuOpRunner::AddInputNames(const std::vector<std::string> &names) {
+  PADDLE_ENFORCE_EQ(names.size(), input_descs_.size(),
+                    platform::errors::InvalidArgument(
+                        "The size of input names should be "
+                        "equal to the size of input descs, but got the size "
+                        "of input names is %d, the size of input descs is %d.",
+                        names.size(), input_descs_.size()));
+  for (size_t i = 0; i < names.size(); ++i) {
+    aclSetTensorDescName(input_descs_[i], names[i].c_str());
+  }
+  return *this;
+}
+
 NpuOpRunner &NpuOpRunner::AddOutputs(const std::vector<Tensor> &tensors) {
   for (auto tensor : tensors) {
     // create aclTensorDesc

paddle/fluid/operators/npu_op_runner.h

@@ -53,6 +53,8 @@ class NpuOpRunner {
 
   NpuOpRunner &AddInputs(const std::vector<Tensor> &tensors);
 
+  NpuOpRunner &AddInputNames(const std::vector<std::string> &names);
+
   NpuOpRunner &AddOutputs(const std::vector<Tensor> &tensors);
 
   aclTensorDesc *GetInputDesc(size_t index);