2013/10/2 Georg-Johann Lay <a...@gjlay.de> > David Brown schrieb: > >> In general, it would be a good thing to delay the zeroing of r1, and it >> is worth searching the issue database for previous issues and filing a >> new "missed optimisation" issue if it is not there already: >> > > IMHO everyone working on the avr back-end is aware of this problem. >
May be, reassigning __zero_reg__ to R2 and using R1:R0 as __temp_reg_hi__:__temp_reg__ will be better but I can't estimate both complexity of changes and code size/perfomance gain effect. -- wbr, ReAl
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