On Aug 4, 2015, at 8:44 AM, H.J. Lu <hjl.to...@gmail.com> wrote: > On Tue, Aug 4, 2015 at 8:40 AM, Mike Stump <mikest...@comcast.net> wrote: >> On Aug 4, 2015, at 5:30 AM, H.J. Lu <hjl.to...@gmail.com> wrote: >>> Where does this feature belong? >> >> I prefer the middle end. > > Any comments on my middle-end patch?
So, if the answer is the same as frame_address (0), why not have the fallback just expand to that? Then, one can use this builtin everywhere that frame address is used today. People that want a faster, tighter port can then implement the hook and achieve higher performance.
