Hi Segher, on 2019/7/22 下午2:26, Segher Boessenkool wrote: > Hi! > > (Maybe I am missing half of the discussion -- sorry if so). > > I think we should have a new iv for just the doloop (which can have the > same starting value and step and type as another iv). > > Has this been considered? > >
I don't have any patches to introduce it. I guess you mean one pre-bind candidate is dedicated to doloop use only? Version 2 introduced pre-bind, but I dropped it as it's invasive to the current selection algorithm. The current implementation is to zeroing cost for doloop use with any candidates and let selection algorithm pick up whatever for it. I think it's fine since doloop_optimize can transform anythings to expected only if it knows the iteration count. Thanks, Kewen
