https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78731
--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> --- On Fri, 9 Dec 2016, law at redhat dot com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78731 > > Jeffrey A. Law <law at redhat dot com> changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > CC| |law at redhat dot com > > --- Comment #4 from Jeffrey A. Law <law at redhat dot com> --- > I'm convinced that a table based jump threader that traverses backedges is > fundamentally a bad idea. That's why I ripped it out and we rely on > Sebastian's code to handle those cases -- Sebastian's code doesn't have to > deal > with table invalidation. > > You might consider just disabling threading across the backedges. There'll be > testsuite fallout, but in the end the layers upon layers of complexity to deal > with invalidation just isn't worth it. I don't think that's appropriate on the branch. So I appreciate review of the patch I posted.
