From: Terje Slettebø (tslettebo_at_[hidden])
Date: 2002-11-10 11:57:16
>From: "Gennaro Prota" <gennaro_prota_at_[hidden]>
> On Sat, 09 Nov 2002 21:00:00 -0500, David Abrahams
> <dave_at_[hidden]> wrote:
> >The RVO doesn't fall into the category of back-end or
> >intermediate-language optimizations that compilers usually let you
> >turn on and off. It has to happen in the front-end, since it often
> >implies observable differences in the code's behavior.
> Well, I'm not a compiler expert, but several compilers have switches
> that actually control the front-end. So there could be one for
> NRVO/URVO too. Or is there any other reason which prevents that?
Since, as Dave said, it may change the observable behaviour, it's perhaps
not such a good idea to have an optimisation switch that changes the
observable behaviour. That could be confusing.
Boost list run by bdawes at acm.org, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk