[fpc-devel] FPC trunk compiler slower than 3.0.4

Florian Klämpfl florian at freepascal.org
Mon May 21 17:42:59 CEST 2018

Am 18.05.2018 um 17:32 schrieb Ondrej Pokorny:
> Hello,
> I observe that FPC trunk compiler is about 65-70% (factor 1.65-1.7) slower than FPC 3.0.4 compiler.
> E.g. building Lazarus IDE takes on my machine:
> 1:00 with FPC 3.0.4
> 1:40 with FPC trunk
> Do you observe the same? Any hints why? 

New features? E.g. helpers made fpc a lot slower (or are they already in 3.0.x?) Optimizer improved
and made the compiler slower etc.

> Is anybody worried about the speed? Is anybody working on
> the speed issues?

Not really, we could only remove features ;)

> The compile time increase is huge.

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