https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85316 Bug 85316 depends on bug 114009, which changed state.
Bug 114009 Summary: [11/12/13/14 Regression] Missed optimization: (!a) * a => 0 when a=(a/2)*2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114009 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED