[andrepd]

>Rvalue references provide move semantics, and they solve the perfect forwarding problem. Neither the performance issue that move semantics address nor the perfect forwarding problem exist in classic OO languages that use reference semantics and garbage collection for user-defined types.

I don't get this. The performance issue move semantics solve doesn't exist if you just use automatic garbage collection? Is this what the article is saying?

[gpderetta]

Those specific issues do not obviously exist if the language lacks value semantics. Other issues of course do exist, namely allocation overhead and pointer chasing and the difficulty of doing escape analysis.