https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19987 Bug 19987 depends on bug 94785, which changed state.
Bug 94785 Summary: Failure to detect abs pattern using multiplication https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94785 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED