On 19.04.2016 17:21, Nick Hill wrote: > On 19 April 2016 at 08:15, Philipp Klaus Krause <p...@spth.de> wrote: > >> While SDCC has different optimizations from Cosmic, and in some cases >> will optimize better or worse than Cosmic, in this case it probably >> won't matter much. SDCC does not currently optimize calls to float >> functions with constant arguments either. > > Hmmm. Very very interesting. > > I guess float math functions are the ones you would really want to > optimise away since the compiled functions are, from the perspective > of a small micro, large and have a very high processing penalty. > Whilst I can't think of one, perhaps there is some technical or > historical precedent for this?
On the other hand, there are few people using float on small systems, so these optimizations would benefit only very few SDCC users. In general, the whole floating-point stuff in SDCC could be improved, but there are other things to do, too. And some of these other things seem more urgent. Philipp
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