[m-users.] Stackoverflow from --intermodule-optimisation

[Paul Bone]

On Tue, Sep 24, 2013 at 02:08:41PM +1000, Michael Day wrote:
> Hi Paul,
>
>> So in this case, by performing intermodule optimisation, we've prevented the
>> standard library's compilation options form affecting the compilation of a
>> predicate whose definition comes from the standard library.
>
> Unfortunate. But apart from during compiler development, is there any  
> time when a user would *not* want to enable the constructor last call  
> optimisation?
>
> It seems that it can only ever improve the generated code, and the extra  
> time / memory usage would only be linear in the code size, so is there  
> any reason not to enable it by default?
>

It is reported to (comments in the manual) that it can slow programs down.
My guess is that this means the chance of slowing a program down is almost
as good as the chance that it'll speed up.


-- 
Paul Bone
http://www.bone.id.au