On 2023-10-08 13:45, J. Gareth Moreton via fpc-devel wrote:
Sorry, ignore last attachment - I forgot to change a line of assembly
(it was correct for x86_64-win64!!). Here is the corrected version.
Alright, results for this version for AMD A9 9425 under Linux (the same
trunk compiler as
Did some checking of the test I copied the code from, and I forgot that
Rika's original code only exited once a certain time period had elapsed
(e.g. 0.5 seconds). I had changed it to a standard iteration count
since I was concerned about fairness and accuracy, but I only changed
the loop
In the meantime, here's the merge request for the feature based on user
tests and studying of Agner Fog's instruction tables:
https://gitlab.com/freepascal.org/fpc/source/-/merge_requests/502
Kit
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fpc-devel maillist -
Hi Nataraj
Which processor is that run on? (although too close to call, it implies
LEA has a latency of 2 in that case)
Kit
On 08/10/2023 14:06, Nataraj S Narayan via fpc-devel wrote:
Hi
[nataraj@dflyHP ~]$ fpc ttt.pas
Free Pascal Compiler version 3.2.2 [2023/07/04] for x86_64
Copyright
Hi
[nataraj@dflyHP ~]$ fpc ttt.pas
Free Pascal Compiler version 3.2.2 [2023/07/04] for x86_64
Copyright (c) 1993-2021 by Florian Klaempfl and others
Target OS: DragonFly for x86-64
Compiling ttt.pas
Linking ttt
/usr/local/bin/ld.bfd: warning:
Sorry, ignore last attachment - I forgot to change a line of assembly
(it was correct for x86_64-win64!!). Here is the corrected version.
Kit
On 08/10/2023 12:38, J. Gareth Moreton via fpc-devel wrote:
Sorry, I got careless and was in a rush, as both the Pascal code is
wrong and I didn't
Sorry, I got careless and was in a rush, as both the Pascal code is
wrong and I didn't store the result of the benchmark test, hence the
error check at the end returned a false negative.
The benchmark code was from Rika's SHA-1 test code, which I didn't
properly check, although I assumed the
1. why you leave "time:=..." in benchmark loop? It does add 50% of execution time per call.
2. Pascal version does not match assembler version. Had to fix it.
//Result := X + Counter + $87654321;
Result:=Result + X + $87654321;
Result:=Result xor y;
3. Assembler functions can be
