[Bug tree-optimization/117574] [12/13/14/15 Regression] Miscompile with -O2/3 and -O0/1

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117574

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
On trunk -fno-tree-ch fixes/avoids the issue.  -fno-tree-vrp also works around.