Regex matching cause lots of _d_arrayliteralTX calls

[Dmitry Olshansky]

27-Sep-2013 18:52, JR пишет:
>
> (I was of the notion that that enum merely translate to
> compile-time-evaluated constants.)

I've recently investigated similar problem w.r.t. performance of 
std.regex on particular use-case/pattern. In fact it dig up an 
interesting bug with inlining in the compiler along the way.

It took about 5 minutes to test that enum used instead of static 
devastates performance but quite some time to figure out the actual 
"infection chain". And indeed suspicious collections/d_array_literal is 
what I've seen in what supposed to be GC-free loop (callgrind is awesome).

-- 
Dmitry Olshansky