Op 12/28/2021 om 3:01 PM schreef Bart via lazarus:
-Cpcoreavx for core 3000 series and higher
Thanks for that.
Up to PENTIUMM: PopCnt slower
COREI : approximately equally fast
COREAVX PopCnt slightly faster
COREAVX2 PopCnt slightly faster
On what machine did you test? The settings if for the generated code,
but the actual processor determines the effective speed.
Most likely not worth bothering.
In code can we check (at compile time) for which instructionset the
code was compiled?
Not that I know. Moreover with AMD etc there would be no simple "x or
greater" kind of criterium other than having popcnt
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