On Tue, Jul 27, 2010 at 21:09, Jack Howarth <howa...@bromo.med.uc.edu> wrote: > When do you think we may start to see the vectorizations in > Gr1 exceed those from Gr0?
I know at least of one case http://gcc.gnu.org/PR43423 that is still not vectorized and that would benefit of the -fgraphite-identity (that does iteration domain splitting). I am also working on a techniques for aggressive if-conversion of nested loops using Graphite. On all these cases, I have to make sure that the code produced by Graphite can be vectorized. > Will that required upgrading to the newer cloog? Not necessarily. At one point in time I would like to stop maintaining the CLooG-PPL branch and switch completely to CLooG.org. That will probably happen in the 4.7 timeline, if we can show that CLooG.org is stable and produces better code by then. > Jack > ps If the vectorizations using -fgraphite-identity eventually reaches > parity with those without that option, would -fgraphite-identity > become defaulted on for gcc builds with graphite support > (assuming minimal compile time increases)? We'll have to show the benefits of turning that flag on. Sebastian
