[Issue 14431] [REG 2.067.0] huge slowdown of compilation speed

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14431

--- Comment #6 from Martin Nowak <code at dawg.eu> ---
That orange library is a really terrible example. Why would someone use single
file compilation for object and header only to pack everything into a static
library.
If I do build everything at once (including headergen -Hfimport -op) this takes
400ms instead of 8.5s.
There is still a slowdown from 400ms to 450ms comparing 2.066.1 and 2.067.0.
Seems to be mostly cause by more allocations in the compiler.

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