On 02/05/2012 07:27 AM, Uros Bizjak wrote: > Hello! > > Attached patch enables post-reload compare optimization pass for x86 targets.
Hmm. Well, the only thing that's going to work for x86 is the double-compare elimination portion. If we want to use this pass for x86, then for 4.8 we should also fix the discrepancy between the compare-elim canonical [(operate) (set-cc)] and the combine canonical [(set-cc) (operate)] (Because of the simplicity of the substitution in compare-elim, I prefer the former as the canonical canonical.) And, really, we ought to come up with some trick to eliminate some of the redundancy in patterns in the md file too. r~
