From: r...@redhat.com Date: Thu, 13 Oct 2011 20:43:19 -0700 > These patches allow __builtin_shuffle to handle any vector permutation > via optabs. It allows for a not-uncommon fallback to byte permutation > at rtl expansion time, while leaving the tree/gimple-level permutation > as element-based. > > All three targets which heretofore supported vector permutation in any > way have been updated to support the new optabs. > > The next step is to convert the vectorizer to use the VEC_PERM_EXPR code > rather than using the hook that returns builtins. Once that is done, > it would be possible for the targets to delete the builtins. Supposing > that they're not exposed for user-level consumption (which is the case > for i386; the user-level interface is via inlines in a header file, which > can be updated to use __builtin_shuffle).
Looks good Richard, I'll work on vec_init and vec_perm* patterns on Sparc when I get a chance.
