Re: Stack vs stackless operation

On 25/02/2025 11:10 pm, LIT wrote:

In case of slower ITC non-optimizing Forths - like
fig-Forth, as the most obvious example - the "boost"
may be noticeable.
I'll check that.

>
code +> ( x y z -- )
  dx pop  cx pop  bx pop  0 [bx] ax mov  cx bx xchg
  0 [bx] ax add  dx bx xchg  ax 0 [bx] mov  next
end-code
>
Timing (adjusted for loop time):
>
 var1 @ var2 @ + var3 !   8019 mS
 var1 var2 var3 +>        5657 mS

 
So even in case of fast DTC Forth, like DX Forth,
it's already something worth of closer attention,
I believe.
...

I remain skeptical of such optimizations.  Not even twice the performance
and the hope it represents a bottle-neck in order to realize that gain.