On 05/16/2018 08:47 AM, Ethan Watson wrote:
On Wednesday, 16 May 2018 at 11:18:54 UTC, Andrei Alexandrescu wrote:
https://www.reddit.com/r/programming/comments/8js69n/validating_utf8_strings_using_as_little_as_07/
I re-implemented some common string functionality at Remedy using SSE
4.2 instructions. Pretty handy. Except we had to turn that code off for
released products since nowhere near enough people are running SSE 4.2
capable hardware.
Is it workable to have a runtime-initialized flag that controls using
SSE vs. conservative?
The code linked doesn't seem to use any instructions newer than SSE2, so
it's perfectly safe to run on any x64 processor. Could probably be sped
up with newer SSE instructions if you're only ever running internally on
hardware you control.
Even better!
Contributions would be very welcome.
Andrei
