[m-rev.] for review: fix mantis bug #559, step 2

[Julien Fischer]

On Fri, 6 May 2022, Zoltan Somogyi wrote:

> 2022-05-06 15:12 GMT+10:00 "Julien Fischer" <jfischer at opturion.com>:
>> The rest looks fine -- thanks for looking into this so promptly.
>
> You are welcome. I followed all your suggestions.
>
> I would like to ask you to benchmark the effect of this change as well,
> maybe with fewer optimination levels (say just 2 and 5), but with more
> repetitions, say 12 or 16 instead of 6. The reason I ask is that the technique
> I used for disjunctions is also applicable to conjunctions and if-then-else
> chains. So if the overall effect of this change is a speedup, then it would
> make sense to try to apply it to them as well, though the average length
> of if-then-else-chains may be too low for the startup&teardown overhead
> to be amortized by faster iterations. (Iterations that move a lot up
> and then a lot down on the stack will have more cache misses than
> versions of those iterations that always use the same few stack frames.)

Shall do.

Julien.