When can a compiler do Return value optimization

Asked Sep 20 '16 at 07:07

Active Sep 20 '16 at 07:07

Viewed 16 times

I came across rvo(Return value optimizatio) and to be honest, i have three questions about rvo.

In which cases must a compiler do rvo (according to the standard complient)?
In which cases is the compiler not allowed to do rvo (according to the standard complient)?
In which cases can't the compiler perform rvo?

asked Sep 20 '16 at 07:07

user1235183

https://en.wikipedia.org/wiki/Return_value_optimization – juanchopanza Sep 20 '16 at 07:08
http://en.cppreference.com/w/cpp/language/copy_elision – juanchopanza Sep 20 '16 at 07:09

0 Answers0