https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99117
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P2 Component|c++ |middle-end Last reconfirmed| |2021-02-16 Target Milestone|--- |9.4 Ever confirmed|0 |1 Known to fail| |10.2.1, 11.0 Status|UNCONFIRMED |NEW Known to work| |7.5.0, 8.4.0 Keywords| |needs-reduction, wrong-code Summary|cannot accumulate |[9/10/11 Regression] cannot |std::valarray |accumulate std::valarray --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. If I disable SRA it works but I haven't looked closer yet.