https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19987 Bug 19987 depends on bug 15350, which changed state.
Bug 15350 Summary: [tree-ssa] Convert if ((1 << a) & 1) into if (a == 0). https://gcc.gnu.org/bugzilla/show_bug.cgi?id=15350 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED