[LLVMdev] Using C++'11 language features in LLVM itself

[Matthieu Monrocq]

On Sun, Jan 13, 2013 at 9:59 PM, Sean Silva <silvas at purdue.edu> wrote:

> On Sun, Jan 13, 2013 at 2:10 PM, Matthieu Monrocq
> <matthieu.monrocq at gmail.com> wrote:
> > gcc 4.5, MSVC 10, clang 3.1
> > - decltype v1.0 [1] + late specified return type
> > - lambda v1.0 [2]
> > - local types as template arguments
> > - r-value 2.0 [3]
> > - static_assert
> > - built-in type traits
>
> This isn't very encouraging. Anecdotally from what I've seen in LLD
> (whose C++11 feature use is bounded only by MSVC 2012), the features
> that get the most mileage by a large margin are `auto`, range-for, and
> `nullptr`, along with library offerings like unique_ptr<>. Just based
> on that, the churn and overhead of imposing new build requirements
> doesn't seem worth it at the moment.
>
> -- Sean Silva
>

Actually, MSVC 10 supports auto as proposed in n1984, which did not yet
removed "auto" as a storage specifier. This is not too surprising since
auto and decltype go hand in hand functionality wise and I am sorry I
missed it.

Therefore, given the list above, the gcc 4.5, MSVC 10 combination provides
both "auto/decltype" and sufficient r-value support for unique_ptr<> (which
is part of the built-in type traits part I believe). range-for and nullptr
are unfortunately not supported with those.

-- Matthieu
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