[Bug rtl-optimization/83962] [6/7/8 Regression] ICE: verify_flow_info failed (too many outgoing branch edges from bb 8)

["abel at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83962

--- Comment #3 from Andrey Belevantsev <abel at gcc dot gnu.org> ---
Here we're trying remove a jump to the next block but fail to adjust the
barrier.  This is something that tidy_fallthru_edge would do for us, but we
don't get to the point we can call it, before that the empty block gets merged
to the previous block, so the edge to tidy disappears.  I've made a patch to do
these actions in a more correct order, i.e. fixup the edge from the empty block
first and then dispatch to the code that will do more cleanups.