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Re: VTA guality assessment: better than -O0 ;-)
On Sat, Jun 13, 2009 at 8:00 PM, Eric Botcazou<ebotcazou@adacore.com> wrote:
>> Yes, I don't like -O0 producing worse debug info - what does
>> the -O0 -fvar-tracking-assignments results look like?
>
> I'd do the opposite: totally disable VTA at -O0 like we do for -fvar-tracking.
> We once tried to enable -fvar-tracking with -O0 at AdaCore and ended up with
> bloated and inferior debug info. ?I think we shouldn't need to do anything
> at -O0 apart from sufficiently curbing the code generator to get correct
> naive debug info; the sophisticated stuff should be reserved to -O and above.
Well, I see FAILs for -O0 compared to -O1 with VTA - that doesn't look "right".
How we fix this is not relevant - but we should try to do so.
Richard.