[Bug tree-optimization/83391] [8 Regression] error: definition in block 9 does not dominate use in block 8

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83391

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r255566, likely related to the allowing of debug stmts before
labels.