https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109079
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Keywords| |missed-optimization Status|UNCONFIRMED |NEW Target| |x86_64-*-* Last reconfirmed| |2023-03-09 --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- I think it wasn't intended to be used this way, but sure. Currently it's a black-box in the target I think and so nothing sees the redundancy.