https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19987 Bug 19987 depends on bug 94884, which changed state.
Bug 94884 Summary: Failure to recognize that result of or is always superior to operands https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94884 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED