New unit test, with Martin's integrated. If I play with godbolt, Ryzen
zen3 (ryzen 5x00X) is nearly twice as fast in cycles as my Ivy Bridge,
so I would like to see some benchmarks from various processors. Also
from very old ones (P4 and Clawhammers) to test instruction sets.
Project utf8len
On 30-12-2021 01:29, Marco van de Voort via lazarus wrote:
(P4 and Clawhammers) to test instruction sets.
64-bit supporting Pentium 4's of course, since this is a 64-bit only test.
Claw/Sledgehammer is the first iteration of Athlon64 and of the x86_64
architecture as a whole and misses so
On 29-12-2021 00:00, Bart via lazarus wrote:
On Tue, Dec 28, 2021 at 11:35 PM Martin Frb via lazarus
wrote:
I have a core I7-8600
The diff between the old code and popcnt is less significant.
old: 715
pop: 695
But there is a 3rd way, that is faster.
add: 610
Not surprising that you should
On 29-12-2021 16:30, Martin Frb via lazarus wrote:
Could you post full source if you haven't already? For a bit of
benchmarking. I just wrote it from the top of my head, and I assumed
5 instructions for 16-byte would win any time, but haven't verified
anything yet.
I had it attached on m
On 29/12/2021 13:42, Marco van de Voort via lazarus wrote:
On 29-12-2021 10:16, Martin Frb via lazarus wrote:
// Martin's routine that should be replaced by some punpkl magic,
but it is too late now.
Why too late?
See datetime stamp. 02:10 AM. I don't know how it is with you Lazarus
dev
Am 29.12.2021 um 13:42 schrieb Marco van de Voort via lazarus:
p.s. is there a workaround for git worktree to work on the same branch? E.g.
trunk for 32-bit and trunk for 64-bit ? :-)
No. You cannot checkout the same branch in two worktrees. But you can do the following: create a new branch
On 29-12-2021 10:16, Martin Frb via lazarus wrote:
// Martin's routine that should be replaced by some punpkl magic, but
it is too late now.
Why too late?
See datetime stamp. 02:10 AM. I don't know how it is with you Lazarus
devels, but we FPC devels need our beauty sleep from time to ti
On 29/12/2021 02:10, Marco van de Voort via lazarus wrote:
On 28-12-2021 23:35, Martin Frb via lazarus wrote:
"nx" has a single "1" in each of the 8 bytes in a Qword (based on
64bit).
If we regard each of this bytes as an entity of its own, then we can
keep adding those "1".
I also was th
