[Bug tree-optimization/71881] [4.9/6/7 Regression] ICE on valid code at -O3 with -g enabled on x86_64-linux-gnu: cannot update SSA form

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71881

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #5)
> Thanks.  I see some reset_debug_uses calls in the ldist pass, perhaps it is
> needed somewhere else too (where we decide the loops should be destroyed).

I think those are premature as well, we simply need to make sure to walk
stmts/BBs backwards in the stmt removal that is done in
generate_loops_for_partition as well.  Not sure if worth the trouble though.