This is the mail archive of the
libstdc++@gcc.gnu.org
mailing list for the libstdc++ project.
Re: Hunting for performance regressions in libstdc++
Howard Hinnant wrote:
> Simply doing a before and after check still allows you to conform to
> the C++03 standard, while not causing a significant performance
> regression against your customers. Why I care: I'm currently
> counseling a customer in exactly this position.
Agreed: as long as we have *both* the checks we are fine. Now that we
are close to the final wording this makes sense: before Lillehammer I
had no idea what shape would take the final resolution and having both
checks it's a rather more invasive change. Also, we had complexity
concerns, which you reported in the paper.
Thanks,
Paolo.