[Bug tree-optimization/70986] [7 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in combine_blocks, at tree-if-conv.c:2219

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70986

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Other loop opts don't necessarily like this (I get regressions).