Hi Lukas: On 09 Dec 2011, at 16:54, Lukas Renggli wrote:
> Hi Stefan, > > I think there is a lint rule that does that: TempNotRead ... I don't > have an image at hand, but I can check tonight if you haven't found it > until then. Thanks, I checked the lint rules, but well, while there are some rules which provide related analysis, what I was looking for is slightly more complex. I basically want to be able to automatically reduce the number of temps for the following example to one: | t1 t2 | t1 := o1 foo. o2 bar: t1. o3 bar: t1. t2 := o1 foo. o2 bar: t2. o3 bar: t2. Of course it is slightly more complex than that, because the usage of the temps is not just in a sequence, but can be also in blocks, or nested expressions. But in this simple example, I could remove t2 and use t1 instead. Well, for the moment, I just removed the offending test from the system, but since my benchmarks do not run yet, I fear that I might run into the problem with real code, too. Best regards Stefan > > Lukas > > On 9 December 2011 16:29, Stefan Marr <ph...@stefan-marr.de> wrote: >> Hi all, >> Hi Lukas: >> >> Do you know if anyone ever implemented a rewriter for the RB AST that >> reduces the amount of temporary variables if possible? >> >> I have a naive rewriting step that creates too many temps, but some of them >> are not strictly necessary. >> >> However, currently, I run into 'Cannot compile -- stack including temps is >> too deep' which is, well, ehm, not so nice. >> >> In case anyone has something in that direction, I would be interested. >> >> Thanks >> Stefan >> >> -- >> Stefan Marr >> Software Languages Lab >> Vrije Universiteit Brussel >> Pleinlaan 2 / B-1050 Brussels / Belgium >> http://soft.vub.ac.be/~smarr >> Phone: +32 2 629 2974 >> Fax: +32 2 629 3525 >> > > > > -- > Lukas Renggli > www.lukas-renggli.ch -- Stefan Marr Software Languages Lab Vrije Universiteit Brussel Pleinlaan 2 / B-1050 Brussels / Belgium http://soft.vub.ac.be/~smarr Phone: +32 2 629 2974 Fax: +32 2 629 3525
