On Sun, Mar 27, 2005 at 08:08:43PM -0500, Kazu Hirata wrote: > Also, if we are inserting ASSERT_EXPRs, it seems to be a good idea to > run copy-prop before VRP. Otherwise, we would end up with lots of > There is a copy-propagation pass before VRP. Or do you mean right before? Sure, the ordering of these passes is in eternal flux anyway.
> Currently, we still have these even after copy prop because we don't > allow copy propagation between const and non-const pointers, which I > think is a bit too restrictive. > I assume these are blocked by may_propagate_copy. What's blocking these? Do they have different alias set numbers or do we need a conversion from the const to the non-const version? > > ISTR either stevenb or dberlin implementing a dom-order > > propagation. I think they got a minor speedup that could be > > worth having. > > Huh, whey I talked to them on IRC they didn't seem to have implemented > this. I'll try to get this issue one of these days. > Maybe I'm thinking of someone else. I do remember somebody playing with this. Oh, well, it doesn't matter. It's easy enough to change at anytime. Diego.
