Jeff Law wrote: > On 07/08/11 11:07, 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). > It's certainly caused problems (some of which I believe have been fixed > within the last year or so)... I think there's a port (AVR?) that may > have similar characteristics. > > jeff
Yes, and fixing the second part appears not to be the right approach. I just committed a patch to fix PR46779, PR45291. Johann
