https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65177
--- Comment #11 from Jeffrey A. Law <law at redhat dot com> --- >From a sequencing standpoint, you do your block copying & wire up the new blocks. Then you have to remove unreachable blocks, rebuild dominators then update hte SSA graph. That is unless the SEME copier tries to update SSA internally, but that's painful.
