https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96336
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Known to fail| |11.0 Keywords| |missed-optimization Last reconfirmed| |2020-07-28 Status|UNCONFIRMED |NEW --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- This only gets optimized on RTL, confirmed. It doesn't get optimized on GIMPLE because reassoc doesn't like signed integers.