[Bug tree-optimization/69214] [4.9/5/6 Regression] ICE (segfault) at -Os on x86_64-linux-gnu in "fail_abnormal_edge_coalesce"

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69214

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 37302
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37302&action=edit
gcc6-pr69214.patch

Untested fix.