11 Aug
2007
11 Aug
'07
12:14 a.m.
Mathias Gaunard wrote:
Martin Bonner wrote:
loufoque wrote:
Libraries that produce needless copies are simply ill-designed, The obvious case is return by value. I know that there are some compiler optimizations that can help here, but we have to work with the compilers we have.
No exisiting decent C++ compiler doesn't perform NRVO. The only compiler I know that performs RVO and not NRVO is MSVC6, and it certainly isn't decent.
What about MSVC 7.1? IIRC it does unnamed RVO but not NRVO (which was added in MSVC8). Overall its still a decent compiler... it does a better job than VC8 in some cases. - Michael Marcin