[fpc-pascal] FPC Graphics options?

[Martin Schreiber]

On Saturday 20 May 2017 21:34:34 Jonas Maebe wrote:
>
> Also in summary, very little was learned from this. We have known for a
> long time that FPC needs SSA for better code generation for loops (and
> Florian has been working on it for a long time too).
>
Here for comparison the results of FPC / MSElang - LLVM 3.8.0:

Linux 32 bit
Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz

With round() operations
https://gitlab.com/mseide-msegui/mselang/blob/master/mselang/benchmark/mctest/mctest.pas

FPC 3.0.2
-O- -> 8 FPS
-O4 -CfSSE3 -CpCOREI -> access violation
-O3 -CfSSE3 -CpCOREI -> access violation
-O2 -CfSSE3 -CpCOREI -> access violation
-O1 -CpCOREI -CfSSE3 -> 12.5 FPS
-O4 -CpCOREI -> 8.2 FPS

MSElang, LLVM 3.8.0
No options -> 4.2 FPS
-O3 -> 5.9 FPS
-O3 -mcpu=corei7 -mattr=+sse3,+ssse3 -> 33.5 FPS

With trunci32() operations
https://gitlab.com/mseide-msegui/mselang/blob/master/mselang/benchmark/mctest/mctest_trunc.pas
-O3 -> 8.1
-O3 -mcpu=corei7 -mattr=+sse3,+ssse3 -> 41.5 FPS

Martin