[Bug target/88861] [9 Regression] ICE in calc_dfs_tree, at dominance.c:458

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88861

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
That means we have unreachable blocks.