From 2a6fc53272f9f8df11936634d04095b3f9f9e5ca Mon Sep 17 00:00:00 2001
From: Shahzad Lone <shahzadlone@gmail.com>
Date: Wed, 16 Jan 2019 11:32:48 -0500
Subject: [PATCH] [Minor Performance Improvement] - Reserve vector, to save
 reallocation costs.

File: [xdl/core/backend/mxnet/convert_utils.cc]
Function: [164:MX2XDL::ConvertShape]

Reserving vector where we already know the size to save on reallocation costs.
---
 xdl/xdl/core/backend/mxnet/convert_utils.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xdl/xdl/core/backend/mxnet/convert_utils.cc b/xdl/xdl/core/backend/mxnet/convert_utils.cc
index 8aabe708..ed079117 100644
--- a/xdl/xdl/core/backend/mxnet/convert_utils.cc
+++ b/xdl/xdl/core/backend/mxnet/convert_utils.cc
@@ -163,6 +163,7 @@ Status MX2XDL::ConvertType(const int s, xdl::DataType* d) {
 
 Status MX2XDL::ConvertShape(const std::vector<mx_uint>& s, xdl::TensorShape* d) {
   std::vector<size_t> dims;
+  dims.reserve(s.size());
   for (auto dim: s) {
     dims.push_back(static_cast<size_t>(dim));
   }