On Mon, 13 Jun 2011, Jason Merrill wrote: > On 06/13/2011 06:51 AM, Richard Guenther wrote: > > But I suppose you want the array-ref be folded to a constant eventually? > > Right. > > I'm not going to keep arguing about VIEW_CONVERT_EXPR, but that brings me back > to my original question: is it OK to add a permissive mode to the function, or > should I copy the whole thing into the front end?
I think you should copy the whole thing into the front end for now. Note that we want to arrive at a point where our constant folding can handle the MEM_REF case for arbitrary constant constructors. See fold_const_aggregate_ref in gimple-fold.c - probably not usable from the frontend directly though. And it doesn't yet handle non-array constructors without having a component-ref tree. But if we eventually have all the code in that routine you might switch to it instead. Richard.
