On Jan 27, 2015, at 10:08 PM, Jeff Law <l...@redhat.com> wrote: > We're still going to need the changes to the heuristic to enable 4 insn > combinations
Yeah, I’ve love for a masters student to come up with a sane way to do 16 or less and enhance gcc to do that. Things like, oh, this pattern is a dead end here, so, no point in trying any combinations with it, or, oh, look, a set or extend, these are really popular in the patterns in this port and I can see 100 ways these can form a basis for combination. As I recall llvm doesn’t limit itself to 3.
