nicolas cellier <ncellier at ifrance.com> wrote:
...
> | t1 t2 t3 |
> t1 := Time millisecondsToRun: [10000000 timesRepeat: [#(1 2 3 4) isEmpty]].
> t2 := Time millisecondsToRun: [10000000 timesRepeat: [#(1 2 3 4) size = 0]].
> t3 := Time millisecondsToRun: [10000000 timesRepeat: [#(1 2 3 4) size == 0]].
> ^Array with: t1 with: t2 with: t3
> 
> VW:
>  #(627 311 291)
>  #(693 302 292)
> 
> Squeak:
>  #(6619 3959 4146)
> #(6558 3976 4126)
> 
> If such optimization matter, should be at the VM level...
> need a guru for JIT, method cache or something we have not yet...
> but don't bother too much at upper level.

In Squeak 3.8, #== seems to be even slower than #=. The same here: 
#(4941 3081 3101). But in Squeak 1.18, I've got #(8977 5313 4923), both
with 3.7.7 Unix-VM resp. 1.18 Unix-VM.

Greetings and thank you, tim, for your convincing answer.

Wolfgang Helbig