On 21/05/18 17:42, Florian Klämpfl wrote:
Am 18.05.2018 um 17:32 schrieb Ondrej Pokorny:
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.
The new typed constant generator is also much slower than the old "just
emit sequences of bytes" approach. On the other hand, it's much less
error prone (no more alignment issues), much more portable and higher
level. It's been in trunk for four years already though.
Jonas
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