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

Julien Fischer jfischer at opturion.com
Thu Sep 26 10:12:57 AEST 2013


Hi Michael,

On Wed, 25 Sep 2013, Michael Day wrote:

>> (1) Is LCMC causing performance degredation in some cases?  (Based on
>> comments in this thread, the answer seems to be yes.)
>
> Prince runs slightly faster with the optimisation enabled, although there are 
> some stress tests we can't try if it is disabled, due to the stack overflow.

What are you comparing here?  Which grade(s)? What optimization level? Is
--intermodule-optimization enabled?

> However, in the past we have rewritten some code with this optimisation in 
> mind during performance profiling, so it might be a biased test.
>
> What about the Mercury compiler itself?

I'll set up some benchmark runs ands have a look.

Cheers,
Julien.



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