Official compiler

[Iain Buclaw via Digitalmars-d]

On 25 Feb 2016 11:05 pm, "Walter Bright via Digitalmars-d" <
digitalmars-d at puremagic.com> wrote:
>
> On 2/25/2016 1:50 PM, Andrei Alexandrescu wrote:
>>
>> Good to know, thanks! -- Andrei
>
>
> DMD did slow down because it was now being compiled by DMD instead of
g++. Also, dmd was doing multithreaded file I/O, but that was removed
because speed didn't matter <grrrr>.
>

I thought that mulithreaded I/O did not change anything, or slowed
compilation down in some cases?

Or I recall seeing a slight slowdown when I first tested it in gdc all
those years ago.  So left it disabled - probably for the best too.
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