Speeding up importing Phobos files

[Walter Bright]

On 1/20/2019 10:21 PM, Vladimir Panteleev wrote:
> This might get you some speed for the first compilation (fewer directory entry 
> lookups), but I would expect that follow-up compilations to have a negligible 
> overhead, compared to the CPU time needed to actually process the source code.


In my benchmarks with Warp, the slowdown persisted with multiple sequential runs.