On Sun, 22 Nov 2020, Florian Klämpfl via fpc-pascal wrote:
Am 21.11.2020 um 12:54 schrieb Tobias Giesen via fpc-pascal:
Hello,
first and foremost, many thanks to the creators and contributors of FPC
and Lazarus, who enabled me to release my product natively for Apple
Silicon only one day after receiving an M1 Mac. Fantastic work! FPC and
Lazarus both run natively and work very well.
According to Geekbench, the single core performance on the new Mac is
around 1.8x as fast as my Intel Mac. Multicore is also much faster. I
wonder why I don't see the speed increase in compiling though. Yes I am
using different FPC and XCode versions, but I wonder what else could
have an influence? My project is very large and not divided into
packages, so I frequently need to recompile the whole project.
I would be most grateful for any performance tips.
In r47526, I implemented support of the prefetch intrinsic on aarch64. On my
Raspi4 it reduced make cycle time by 25 %
(!). I would be very interested to get numbers for the M1.
25% ?!
Well...
If the compiler can make such a difference, should we still bother with micro-optimizations in code then ?
Michael.
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