On Wed, May 13, 2015 at 01:25:16PM -0400, David Edelsohn wrote: > > PR rtl-optimization/30967 > > * config/rs6000/rs6000.c (rs6000_rtx_costs): Don't consider > > destination mode for the cost of scc patterns. > > Okay. > > Should this be applied to GCC 5 branch?
[ Testing is still in progress. ] It should be prefectly safe to backport; OTOH, it is just one of very many cases where we generate an extra sign-extend, so I don't think it is particularly useful. Your choice :-) Segher
