DIP20: Volatile read/write intrinsics

[Chad J]

On 10/10/2012 02:31 PM, Alex Rønne Petersen wrote:
> http://prowiki.org/wiki4d/wiki.cgi?LanguageDevel/DIPs/DIP20
>
> This supersedes DIP17.
>
> The primary reason to use intrinsics instead of something built into the
> language is that the latter is too complex for current (and likely also
> future) compiler implementations.
>
> Destroy!
>

Since this can affect semantics but might not always be available, is 
there any chance you could add a feature detection intrinsic for this? 
Maybe a compile-time "haveVolatileOps" identifier would work.

Volatility might be absent if:
- The backend target can't forward the volatility guarantees, ex: a D 
compiler that emits JavaScript code.
- The compiler has not implemented volatile operations yet.