std.allocator ready for some abuse

[safety0ff]

On Monday, 28 October 2013 at 02:30:53 UTC, Manu wrote:
> GPU's also tend to deal with strict alignments of various 
> buffers.
>
> SIMD requires >= 16byte alignment, which is higher than the 
> default 4-8
> byte alignment of many allocators.

AFAIK the alignments for those cases are known a priori, the 
question was regarding alignments that are only known at runtime.