Why 16Mib static array size limit?

[Walter Bright via Digitalmars-d]

On 8/17/2016 9:16 PM, Chris Wright wrote:
> So it's not surprising that the compiler doesn't handle global variables
> as well as it does local ones.

Global variables are pretty much spawn of the devil. You're right that dmd does 
not make a special effort optimizing them.

The way to deal with it:

1. minimize use of globals

2. if using them in a hot loop, copy a reference to the global into a local 
variable, and use the local variable in the loop instead.

This also gets around the problem that thread local storage address calculation 
is slow and inefficient on all platforms.