[Bug tree-optimization/67121] [6 Regression] wrong code at -O3 on x86_64-linux-gnu

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67121

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Disabling if-conversion fixes it so does disabling VRP2.