title: GCC code statistics/analysis
body: <p>Does GCC/G++ have an option available to output analysis?</p>
  
  <p>It would be useful to be able to compare differences between the previous code with the new one (size, sizes of classes/structures). Those can then be diff'd with the previous output for comparison, which could be useful for many purposes.</p>
  
  <p>If no such output analysis is available, what is the best way to obtain such information?</p>