https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109499
--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> --- (In reply to Richard Biener from comment #1) > Is there not enough info to catch this on the RTL level with a peephole? That works for simple cases like the first loop. But in general, I think we want the full power of gimple to push the information down. The second loop is one example of that, but in general, there could be a chain of operations that naturally do the right thing for inactive lanes.
