http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38785
--- Comment #36 from Jorn Wolfgang Rennecke <amylaar at gcc dot gnu.org> 2012-11-21 17:59:10 UTC --- (In reply to comment #35) > Too bad, we really need to make some model on how many PHI copies we > introduce... I agree with Richard's comment that Joern's patch is rather bad > in > respect to optimization oppurtunities. This is more or less register > pressure > problem. I will try think about it a bit more ;) This is not just register pressure, these constant loads and register-register copies do not come free, either.
