[Bug rtl-optimization/69887] [4.9/5/6 Regression] gcc ICE at -O1 and above on x86_64-linux-gnu in mark_jump_label_1

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69887

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
But we shouldn't ICE on this.  It is fine to reject it with error.