https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86024
--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> --- (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) The testcase is a simplified version of boost::container::flat_map<int,int>. The most important missing transformation is memmove, but it was easier to report memcpy and I kind of expect that they may all be fixed together.
