Am Tue, Apr 09, 2024 at 05:01:18PM +0200 schrieb Andreas Krebbel: > On 4/9/24 16:31, Juergen Christ wrote: > > Loop vectorizer can generate vector permutes with constant indexes > > where all indexes are equal. Optimize this case to use vector > > replicate instead of vector permute. > > > > gcc/ChangeLog: > > > > * config/s390/s390.cc (expand_perm_as_replicate): Implement. > > (vectorize_vec_perm_const_1): Call new function. > > * config/s390/vx-builtins.md (vec_splat<mode>): Change to... > > (@vec_splat<mode>): ...this. > > > > gcc/testsuite/ChangeLog: > > > > * gcc.target/s390/vector/vec-expand-replicate.c: New test. > > > > Bootstrapped and regtested on s390x. Ok for trunk? > > Does this also work when using the vec_perm intrinsic or would we need to > define a matching RTX for > that?
Unfortunately, it does not work with vec_perm. > Ok. Thanks! Pushed. Juergen
