Hi,
It's common knowledge that accessing tls global is slow
http://david-grs.github.io/tls_performance_overhead_cost_linux/
What i do not understand is the reasoning behind choosing tls
global by default in D
What i find even more weird is writing fast code is ugly in D
Look at this ugly code
```D
__gshared int fast_code_ugly;
```
It should be the opposite
Slow code ugly
Fast code beautiful
What can be done about it?
Renaming ``__gshared``
``shared`` is even more ugly since everything must be shared
afterwards
I would have prefered if i had to manually set things to tls
```D
@tls int slow_code_ugly;
```
Even C does it better:
https://gcc.gnu.org/onlinedocs/gcc/Thread-Local.html
