On Jul 8, 2011, at 1:07 PM, DJ Delorie wrote: > > Is there an unwritten rule that the frame pointer must be a single > hard register? I'm working on a port where $fp is a register pair, > and I've seen gcc allocate the second register to other things > (causing all sorts of problems).
Would it suffice simply to mark the second register as a reserved register?
That should take it away from the allocator, right?
paul
