https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79185
--- Comment #5 from Jeffrey A. Law <law at redhat dot com> --- Is the CLOBBER even necessary anymore? Wasn't its only purpose to tell dataflow that r88 was dead because our old flow analysis couldn't? Doesn't the DF infrastructure get this right? If it does, then we might be able to drop the CLOBBER entirely which might simplify the problem.
