'int' is enough for 'length' to migrate code from x86 to x64

[via Digitalmars-d]

On Monday, 24 November 2014 at 17:55:06 UTC, Ola Fosheim Grøstad 
wrote:
> I think the point with having compiler support is to retain 
> most optimizations. The compiler select the most efficient 
> representation based on the needed headroom and makes sure that 
> overflow is recorded so that you can eventually respond to it.

It is also worth noting that Intel CPUs have 3 new instructions 
for working with large integers:

MULX and ADCX/ADOX.

http://www.intel.com/content/www/us/en/intelligent-systems/intel-technology/ia-large-integer-arithmetic-paper.html

So there is no reason to not go for it IMO.