[Bug rtl-optimization/90688] [7/8/9/10 Regression] ICE in calc_dfs_tree, at dominance.c:458 since r235297

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90688

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2
          Component|tree-optimization           |rtl-optimization

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think I've seen a duplicate, fwprop not handling unreachable BBs (or whoever
introduced those not cleaning up the CFG properly).