Profile-guided optimization (PGO)

[Johan Engelen via digitalmars-d-ldc]

On Friday, 11 December 2015 at 14:07:56 UTC, Kagamin wrote:
> On Friday, 11 December 2015 at 00:26:22 UTC, Johan Engelen 
> wrote:
>> So PGO brings it from 2.55 to 2.48 sec, ~3% improvement.
>> Disappointing, but well... it works!
>
> PGO can also reduce physical memory consumption due to less 
> code loaded into memory.

Yes, indeed. I'd like to find a good example of code where this 
shows up in practice, so that PGO really does improve performance 
significantly (say, >10%).