[fpc-devel]Bunch'o questions for the new year

Jonas Maebe jonas at zeus.ugent.be
Wed Jan 7 10:13:41 CET 2004

On 7 jan 2004, at 08:11, Eric Grange wrote:

> New question: is -O2 supposed to perform uncertain optimizations as 
> well?


> I've got a bit of code (OpenGL teapot) that behaves correctly when 
> compiled with -O1,
> and is somewhat visually garbled with -O2. I tried to simplify the 
> case a bit, but that would
> make the issue go away.

That's usually the case with optimizer bugs, as they highly depend on 
the context.

> The code in question is made of several imbricated loops massaging
> values in 3 dimensionnal arrays.
> Is it a known issue of the beta or would it be worth it trying harder 
> to simplify for a test case?

It would be very nice to have a test case, yes.



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