https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86024
--- Comment #3 from bin cheng <amker at gcc dot gnu.org> --- (In reply to Marc Glisse from comment #2) > (In reply to Richard Biener from comment #1) > > Or we may want to un-"SRA" such patterns, generating aggregate copies. > > I notice that store-merging does not merge these stores, I didn't check why. > SLP can do it for long but not for int (no vector of 2 ints) with > -fdisable-tree-vect. > > (anyway that's too late for ldist, the DR / vectorizer approach sounds > better, just mentioning this as another possible missed optimization) Yes, merging and SRA are conflicting with each other here, and it's difficult to get a model deciding when to do what. With DR improvement, we can identify and connect two or more builtin partitions in ldist.
