A few numbers on allocation in dmd

[Stefan Koch]

On Tuesday, 30 June 2020 at 01:54:54 UTC, rikki cattermole wrote:
> On 30/06/2020 1:18 PM, Andrei Alexandrescu wrote:
>> * Any work that reduces the number of TypeIdentifier, 
>> TemplateInstance, etc. objects in the first place would help 
>> quite a bit.
>
> One strategy that is used with identifiers in dmd is to use a 
> table lookup of strings to them. By making them unique, it 
> makes them faster overall.
>
> If we could strip out the SLOC out of the TypeIdentifier class, 
> this strategy could be used for it.

I would guess TypeIdentifiers being excessively is one of the 
side effects of massive template instantiation.

Templates are a crutch when used for meta programming.
It's time we start walking on two strong legs.